TargetInfo.cpp revision 93ae947df36133c7a26a0c7d325c0679916ed2ed
182d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov//===---- TargetInfo.cpp - Encapsulate target details -----------*- C++ -*-===// 2c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov// 3c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov// The LLVM Compiler Infrastructure 4c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov// 5c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov// This file is distributed under the University of Illinois Open Source 6c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov// License. See LICENSE.TXT for details. 7c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov// 8c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov//===----------------------------------------------------------------------===// 9c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov// 10c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov// These classes wrap the information about a call or function 11c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov// definition used to handle ABI compliancy. 12c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov// 13c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov//===----------------------------------------------------------------------===// 14c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1582d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov#include "TargetInfo.h" 16c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov#include "ABIInfo.h" 17c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov#include "CodeGenFunction.h" 1819cc4abea06a9b49e0e16a50d335c064cd723572Anders Carlsson#include "clang/AST/RecordLayout.h" 19c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov#include "llvm/Type.h" 209c254f0415bef9a0bafe5b5026ddb54b727597b1Chris Lattner#include "llvm/Target/TargetData.h" 2182d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov#include "llvm/ADT/StringExtras.h" 222c0843f166a82f251b20370fadab57878969e7aaDaniel Dunbar#include "llvm/ADT/Triple.h" 2328df7a5813d94ff32904c31195d7f6fd74db8c53Daniel Dunbar#include "llvm/Support/raw_ostream.h" 24c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikovusing namespace clang; 25c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikovusing namespace CodeGen; 26c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 27aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCallstatic void AssignToArrayRange(CodeGen::CGBuilderTy &Builder, 28aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall llvm::Value *Array, 29aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall llvm::Value *Value, 30aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall unsigned FirstIndex, 31aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall unsigned LastIndex) { 32aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall // Alternatively, we could emit this as a loop in the source. 33aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall for (unsigned I = FirstIndex; I <= LastIndex; ++I) { 34aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall llvm::Value *Cell = Builder.CreateConstInBoundsGEP1_32(Array, I); 35aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall Builder.CreateStore(Value, Cell); 36aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall } 37aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall} 38aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall 39d608cdb7c044365cf4e8764ade1e11e99c176078John McCallstatic bool isAggregateTypeForABI(QualType T) { 40d608cdb7c044365cf4e8764ade1e11e99c176078John McCall return CodeGenFunction::hasAggregateLLVMType(T) || 41d608cdb7c044365cf4e8764ade1e11e99c176078John McCall T->isMemberFunctionPointerType(); 42d608cdb7c044365cf4e8764ade1e11e99c176078John McCall} 43d608cdb7c044365cf4e8764ade1e11e99c176078John McCall 44c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton KorobeynikovABIInfo::~ABIInfo() {} 45c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 46ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris LattnerASTContext &ABIInfo::getContext() const { 47ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner return CGT.getContext(); 48ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner} 49ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner 50ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattnerllvm::LLVMContext &ABIInfo::getVMContext() const { 51ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner return CGT.getLLVMContext(); 52ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner} 53ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner 54ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattnerconst llvm::TargetData &ABIInfo::getTargetData() const { 55ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner return CGT.getTargetData(); 56ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner} 57ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner 58ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner 59c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikovvoid ABIArgInfo::dump() const { 6028df7a5813d94ff32904c31195d7f6fd74db8c53Daniel Dunbar llvm::raw_ostream &OS = llvm::errs(); 6128df7a5813d94ff32904c31195d7f6fd74db8c53Daniel Dunbar OS << "(ABIArgInfo Kind="; 62c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov switch (TheKind) { 63c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case Direct: 64800588fd230d2c37ddce8fbf4a3881352715d700Chris Lattner OS << "Direct Type="; 65800588fd230d2c37ddce8fbf4a3881352715d700Chris Lattner if (const llvm::Type *Ty = getCoerceToType()) 66800588fd230d2c37ddce8fbf4a3881352715d700Chris Lattner Ty->print(OS); 67800588fd230d2c37ddce8fbf4a3881352715d700Chris Lattner else 68800588fd230d2c37ddce8fbf4a3881352715d700Chris Lattner OS << "null"; 69c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov break; 70cc6fa88666ca2f287df4a600eb31a4087bab9c13Anton Korobeynikov case Extend: 7128df7a5813d94ff32904c31195d7f6fd74db8c53Daniel Dunbar OS << "Extend"; 72cc6fa88666ca2f287df4a600eb31a4087bab9c13Anton Korobeynikov break; 73c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case Ignore: 7428df7a5813d94ff32904c31195d7f6fd74db8c53Daniel Dunbar OS << "Ignore"; 75c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov break; 76c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case Indirect: 77dc6d574155072bfb35a7a29b94ef3afa0d40fb5aDaniel Dunbar OS << "Indirect Align=" << getIndirectAlign() 78dc6d574155072bfb35a7a29b94ef3afa0d40fb5aDaniel Dunbar << " Byal=" << getIndirectByVal(); 79c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov break; 80c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case Expand: 8128df7a5813d94ff32904c31195d7f6fd74db8c53Daniel Dunbar OS << "Expand"; 82c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov break; 83c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 8428df7a5813d94ff32904c31195d7f6fd74db8c53Daniel Dunbar OS << ")\n"; 85c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 86c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 8782d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton KorobeynikovTargetCodeGenInfo::~TargetCodeGenInfo() { delete Info; } 8882d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov 8998303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbarstatic bool isEmptyRecord(ASTContext &Context, QualType T, bool AllowArrays); 90c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 91c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov/// isEmptyField - Return true iff a the field is "empty", that is it 92c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov/// is an unnamed bit-field or an (array of) empty record(s). 9398303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbarstatic bool isEmptyField(ASTContext &Context, const FieldDecl *FD, 9498303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar bool AllowArrays) { 95c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (FD->isUnnamedBitfield()) 96c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return true; 97c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 98c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov QualType FT = FD->getType(); 99c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 10098303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar // Constant arrays of empty records count as empty, strip them off. 10198303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar if (AllowArrays) 10298303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar while (const ConstantArrayType *AT = Context.getAsConstantArrayType(FT)) 10398303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar FT = AT->getElementType(); 10498303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 1055ea68614bfe0e78b5d66339b781529038f86501fDaniel Dunbar const RecordType *RT = FT->getAs<RecordType>(); 1065ea68614bfe0e78b5d66339b781529038f86501fDaniel Dunbar if (!RT) 1075ea68614bfe0e78b5d66339b781529038f86501fDaniel Dunbar return false; 1085ea68614bfe0e78b5d66339b781529038f86501fDaniel Dunbar 1095ea68614bfe0e78b5d66339b781529038f86501fDaniel Dunbar // C++ record fields are never empty, at least in the Itanium ABI. 1105ea68614bfe0e78b5d66339b781529038f86501fDaniel Dunbar // 1115ea68614bfe0e78b5d66339b781529038f86501fDaniel Dunbar // FIXME: We should use a predicate for whether this behavior is true in the 1125ea68614bfe0e78b5d66339b781529038f86501fDaniel Dunbar // current ABI. 1135ea68614bfe0e78b5d66339b781529038f86501fDaniel Dunbar if (isa<CXXRecordDecl>(RT->getDecl())) 1145ea68614bfe0e78b5d66339b781529038f86501fDaniel Dunbar return false; 1155ea68614bfe0e78b5d66339b781529038f86501fDaniel Dunbar 11698303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar return isEmptyRecord(Context, FT, AllowArrays); 117c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 118c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 119c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov/// isEmptyRecord - Return true iff a structure contains only empty 120c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov/// fields. Note that a structure with a flexible array member is not 121c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov/// considered empty. 12298303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbarstatic bool isEmptyRecord(ASTContext &Context, QualType T, bool AllowArrays) { 1236217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek const RecordType *RT = T->getAs<RecordType>(); 124c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (!RT) 125c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return 0; 126c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov const RecordDecl *RD = RT->getDecl(); 127c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (RD->hasFlexibleArrayMember()) 128c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return false; 1295ea68614bfe0e78b5d66339b781529038f86501fDaniel Dunbar 1305ea68614bfe0e78b5d66339b781529038f86501fDaniel Dunbar // If this is a C++ record, check the bases first. 1315ea68614bfe0e78b5d66339b781529038f86501fDaniel Dunbar if (const CXXRecordDecl *CXXRD = dyn_cast<CXXRecordDecl>(RD)) 1325ea68614bfe0e78b5d66339b781529038f86501fDaniel Dunbar for (CXXRecordDecl::base_class_const_iterator i = CXXRD->bases_begin(), 1335ea68614bfe0e78b5d66339b781529038f86501fDaniel Dunbar e = CXXRD->bases_end(); i != e; ++i) 1345ea68614bfe0e78b5d66339b781529038f86501fDaniel Dunbar if (!isEmptyRecord(Context, i->getType(), true)) 1355ea68614bfe0e78b5d66339b781529038f86501fDaniel Dunbar return false; 1365ea68614bfe0e78b5d66339b781529038f86501fDaniel Dunbar 13717945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis for (RecordDecl::field_iterator i = RD->field_begin(), e = RD->field_end(); 13817945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis i != e; ++i) 13998303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar if (!isEmptyField(Context, *i, AllowArrays)) 140c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return false; 141c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return true; 142c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 143c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1440a8f847e97f40cce51dc69051b964732333dc028Anders Carlsson/// hasNonTrivialDestructorOrCopyConstructor - Determine if a type has either 1450a8f847e97f40cce51dc69051b964732333dc028Anders Carlsson/// a non-trivial destructor or a non-trivial copy constructor. 1460a8f847e97f40cce51dc69051b964732333dc028Anders Carlssonstatic bool hasNonTrivialDestructorOrCopyConstructor(const RecordType *RT) { 1470a8f847e97f40cce51dc69051b964732333dc028Anders Carlsson const CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(RT->getDecl()); 1480a8f847e97f40cce51dc69051b964732333dc028Anders Carlsson if (!RD) 1490a8f847e97f40cce51dc69051b964732333dc028Anders Carlsson return false; 1508bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1510a8f847e97f40cce51dc69051b964732333dc028Anders Carlsson return !RD->hasTrivialDestructor() || !RD->hasTrivialCopyConstructor(); 1520a8f847e97f40cce51dc69051b964732333dc028Anders Carlsson} 1530a8f847e97f40cce51dc69051b964732333dc028Anders Carlsson 1540a8f847e97f40cce51dc69051b964732333dc028Anders Carlsson/// isRecordWithNonTrivialDestructorOrCopyConstructor - Determine if a type is 1550a8f847e97f40cce51dc69051b964732333dc028Anders Carlsson/// a record type with either a non-trivial destructor or a non-trivial copy 1560a8f847e97f40cce51dc69051b964732333dc028Anders Carlsson/// constructor. 1570a8f847e97f40cce51dc69051b964732333dc028Anders Carlssonstatic bool isRecordWithNonTrivialDestructorOrCopyConstructor(QualType T) { 1580a8f847e97f40cce51dc69051b964732333dc028Anders Carlsson const RecordType *RT = T->getAs<RecordType>(); 1590a8f847e97f40cce51dc69051b964732333dc028Anders Carlsson if (!RT) 1600a8f847e97f40cce51dc69051b964732333dc028Anders Carlsson return false; 1610a8f847e97f40cce51dc69051b964732333dc028Anders Carlsson 1620a8f847e97f40cce51dc69051b964732333dc028Anders Carlsson return hasNonTrivialDestructorOrCopyConstructor(RT); 1630a8f847e97f40cce51dc69051b964732333dc028Anders Carlsson} 1640a8f847e97f40cce51dc69051b964732333dc028Anders Carlsson 165c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov/// isSingleElementStruct - Determine if a structure is a "single 166c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov/// element struct", i.e. it has exactly one non-empty field or 167c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov/// exactly one field which is itself a single element 168c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov/// struct. Structures with flexible array members are never 169c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov/// considered single element structs. 170c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov/// 171c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov/// \return The field declaration for the single non-empty field, if 172c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov/// it exists. 173c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikovstatic const Type *isSingleElementStruct(QualType T, ASTContext &Context) { 174c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov const RecordType *RT = T->getAsStructureType(); 175c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (!RT) 176c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return 0; 177c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 178c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov const RecordDecl *RD = RT->getDecl(); 179c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (RD->hasFlexibleArrayMember()) 180c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return 0; 181c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 182c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov const Type *Found = 0; 1838bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1849430d5a61598c47d827e1cd05f7cf3f110eeec9eDaniel Dunbar // If this is a C++ record, check the bases first. 1859430d5a61598c47d827e1cd05f7cf3f110eeec9eDaniel Dunbar if (const CXXRecordDecl *CXXRD = dyn_cast<CXXRecordDecl>(RD)) { 1869430d5a61598c47d827e1cd05f7cf3f110eeec9eDaniel Dunbar for (CXXRecordDecl::base_class_const_iterator i = CXXRD->bases_begin(), 1879430d5a61598c47d827e1cd05f7cf3f110eeec9eDaniel Dunbar e = CXXRD->bases_end(); i != e; ++i) { 1889430d5a61598c47d827e1cd05f7cf3f110eeec9eDaniel Dunbar // Ignore empty records. 1895ea68614bfe0e78b5d66339b781529038f86501fDaniel Dunbar if (isEmptyRecord(Context, i->getType(), true)) 1909430d5a61598c47d827e1cd05f7cf3f110eeec9eDaniel Dunbar continue; 1919430d5a61598c47d827e1cd05f7cf3f110eeec9eDaniel Dunbar 1929430d5a61598c47d827e1cd05f7cf3f110eeec9eDaniel Dunbar // If we already found an element then this isn't a single-element struct. 1939430d5a61598c47d827e1cd05f7cf3f110eeec9eDaniel Dunbar if (Found) 1949430d5a61598c47d827e1cd05f7cf3f110eeec9eDaniel Dunbar return 0; 1959430d5a61598c47d827e1cd05f7cf3f110eeec9eDaniel Dunbar 1969430d5a61598c47d827e1cd05f7cf3f110eeec9eDaniel Dunbar // If this is non-empty and not a single element struct, the composite 1979430d5a61598c47d827e1cd05f7cf3f110eeec9eDaniel Dunbar // cannot be a single element struct. 1989430d5a61598c47d827e1cd05f7cf3f110eeec9eDaniel Dunbar Found = isSingleElementStruct(i->getType(), Context); 1999430d5a61598c47d827e1cd05f7cf3f110eeec9eDaniel Dunbar if (!Found) 2009430d5a61598c47d827e1cd05f7cf3f110eeec9eDaniel Dunbar return 0; 2019430d5a61598c47d827e1cd05f7cf3f110eeec9eDaniel Dunbar } 2029430d5a61598c47d827e1cd05f7cf3f110eeec9eDaniel Dunbar } 2039430d5a61598c47d827e1cd05f7cf3f110eeec9eDaniel Dunbar 2049430d5a61598c47d827e1cd05f7cf3f110eeec9eDaniel Dunbar // Check for single element. 20517945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis for (RecordDecl::field_iterator i = RD->field_begin(), e = RD->field_end(); 20617945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis i != e; ++i) { 207c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov const FieldDecl *FD = *i; 208c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov QualType FT = FD->getType(); 209c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 210c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Ignore empty fields. 21198303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar if (isEmptyField(Context, FD, true)) 212c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov continue; 213c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 214c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // If we already found an element then this isn't a single-element 215c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // struct. 216c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (Found) 217c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return 0; 218c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 219c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Treat single element arrays as the element. 220c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov while (const ConstantArrayType *AT = Context.getAsConstantArrayType(FT)) { 221c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (AT->getSize().getZExtValue() != 1) 222c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov break; 223c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov FT = AT->getElementType(); 224c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 225c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 226d608cdb7c044365cf4e8764ade1e11e99c176078John McCall if (!isAggregateTypeForABI(FT)) { 227c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Found = FT.getTypePtr(); 228c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } else { 229c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Found = isSingleElementStruct(FT, Context); 230c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (!Found) 231c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return 0; 232c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 233c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 234c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 235c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return Found; 236c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 237c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 238c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikovstatic bool is32Or64BitBasicType(QualType Ty, ASTContext &Context) { 239a1842d32a1964712e42078e9b389dce9258c6a8cDaniel Dunbar if (!Ty->getAs<BuiltinType>() && !Ty->hasPointerRepresentation() && 24055e59e139d9ebcaae16d710472e28edbcafac98aDaniel Dunbar !Ty->isAnyComplexType() && !Ty->isEnumeralType() && 24155e59e139d9ebcaae16d710472e28edbcafac98aDaniel Dunbar !Ty->isBlockPointerType()) 242c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return false; 243c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 244c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov uint64_t Size = Context.getTypeSize(Ty); 245c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return Size == 32 || Size == 64; 246c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 247c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 24853012f447145bfd5e3a759f069a2bdf2b6705708Daniel Dunbar/// canExpandIndirectArgument - Test whether an argument type which is to be 24953012f447145bfd5e3a759f069a2bdf2b6705708Daniel Dunbar/// passed indirectly (on the stack) would have the equivalent layout if it was 25053012f447145bfd5e3a759f069a2bdf2b6705708Daniel Dunbar/// expanded into separate arguments. If so, we prefer to do the latter to avoid 25153012f447145bfd5e3a759f069a2bdf2b6705708Daniel Dunbar/// inhibiting optimizations. 25253012f447145bfd5e3a759f069a2bdf2b6705708Daniel Dunbar/// 25353012f447145bfd5e3a759f069a2bdf2b6705708Daniel Dunbar// FIXME: This predicate is missing many cases, currently it just follows 25453012f447145bfd5e3a759f069a2bdf2b6705708Daniel Dunbar// llvm-gcc (checks that all fields are 32-bit or 64-bit primitive types). We 25553012f447145bfd5e3a759f069a2bdf2b6705708Daniel Dunbar// should probably make this smarter, or better yet make the LLVM backend 25653012f447145bfd5e3a759f069a2bdf2b6705708Daniel Dunbar// capable of handling it. 25753012f447145bfd5e3a759f069a2bdf2b6705708Daniel Dunbarstatic bool canExpandIndirectArgument(QualType Ty, ASTContext &Context) { 25853012f447145bfd5e3a759f069a2bdf2b6705708Daniel Dunbar // We can only expand structure types. 25953012f447145bfd5e3a759f069a2bdf2b6705708Daniel Dunbar const RecordType *RT = Ty->getAs<RecordType>(); 26053012f447145bfd5e3a759f069a2bdf2b6705708Daniel Dunbar if (!RT) 26153012f447145bfd5e3a759f069a2bdf2b6705708Daniel Dunbar return false; 26253012f447145bfd5e3a759f069a2bdf2b6705708Daniel Dunbar 26353012f447145bfd5e3a759f069a2bdf2b6705708Daniel Dunbar // We can only expand (C) structures. 26453012f447145bfd5e3a759f069a2bdf2b6705708Daniel Dunbar // 26553012f447145bfd5e3a759f069a2bdf2b6705708Daniel Dunbar // FIXME: This needs to be generalized to handle classes as well. 26653012f447145bfd5e3a759f069a2bdf2b6705708Daniel Dunbar const RecordDecl *RD = RT->getDecl(); 26753012f447145bfd5e3a759f069a2bdf2b6705708Daniel Dunbar if (!RD->isStruct() || isa<CXXRecordDecl>(RD)) 26853012f447145bfd5e3a759f069a2bdf2b6705708Daniel Dunbar return false; 26953012f447145bfd5e3a759f069a2bdf2b6705708Daniel Dunbar 27017945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis for (RecordDecl::field_iterator i = RD->field_begin(), e = RD->field_end(); 27117945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis i != e; ++i) { 272c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov const FieldDecl *FD = *i; 273c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 274c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (!is32Or64BitBasicType(FD->getType(), Context)) 275c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return false; 276c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 277c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // FIXME: Reject bit-fields wholesale; there are two problems, we don't know 278c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // how to expand them yet, and the predicate for telling if a bitfield still 279c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // counts as "basic" is more complicated than what we were doing previously. 280c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (FD->isBitField()) 281c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return false; 282c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 283c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 284c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return true; 285c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 286c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 287c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikovnamespace { 288c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov/// DefaultABIInfo - The default implementation for ABI specific 289c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov/// details. This implementation provides information which results in 290c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov/// self-consistent and sensible LLVM IR generation, but does not 291c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov/// conform to any particular ABI. 292c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikovclass DefaultABIInfo : public ABIInfo { 293ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattnerpublic: 294ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner DefaultABIInfo(CodeGen::CodeGenTypes &CGT) : ABIInfo(CGT) {} 2958bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 296a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner ABIArgInfo classifyReturnType(QualType RetTy) const; 297a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner ABIArgInfo classifyArgumentType(QualType RetTy) const; 298c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 299ee5dcd064a811edc90f6c1fb31a837b6c961fed7Chris Lattner virtual void computeInfo(CGFunctionInfo &FI) const { 300a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner FI.getReturnInfo() = classifyReturnType(FI.getReturnType()); 301c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov for (CGFunctionInfo::arg_iterator it = FI.arg_begin(), ie = FI.arg_end(); 302c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov it != ie; ++it) 303a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner it->info = classifyArgumentType(it->type); 304c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 305c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 306c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov virtual llvm::Value *EmitVAArg(llvm::Value *VAListAddr, QualType Ty, 307c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CodeGenFunction &CGF) const; 308c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov}; 309c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 31082d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikovclass DefaultTargetCodeGenInfo : public TargetCodeGenInfo { 31182d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikovpublic: 312ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner DefaultTargetCodeGenInfo(CodeGen::CodeGenTypes &CGT) 313ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner : TargetCodeGenInfo(new DefaultABIInfo(CGT)) {} 31482d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov}; 31582d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov 31682d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikovllvm::Value *DefaultABIInfo::EmitVAArg(llvm::Value *VAListAddr, QualType Ty, 31782d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov CodeGenFunction &CGF) const { 31882d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov return 0; 31982d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov} 32082d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov 321a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris LattnerABIArgInfo DefaultABIInfo::classifyArgumentType(QualType Ty) const { 322d608cdb7c044365cf4e8764ade1e11e99c176078John McCall if (isAggregateTypeForABI(Ty)) 32382d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov return ABIArgInfo::getIndirect(0); 324dc6d574155072bfb35a7a29b94ef3afa0d40fb5aDaniel Dunbar 325a14db75641f377ef8b033c67653cd95ac4c36fe3Chris Lattner // Treat an enum type as its underlying type. 326a14db75641f377ef8b033c67653cd95ac4c36fe3Chris Lattner if (const EnumType *EnumTy = Ty->getAs<EnumType>()) 327a14db75641f377ef8b033c67653cd95ac4c36fe3Chris Lattner Ty = EnumTy->getDecl()->getIntegerType(); 328aa74a1e49f7c4b89539830290f76fe2c3e97187fDouglas Gregor 329a14db75641f377ef8b033c67653cd95ac4c36fe3Chris Lattner return (Ty->isPromotableIntegerType() ? 330a14db75641f377ef8b033c67653cd95ac4c36fe3Chris Lattner ABIArgInfo::getExtend() : ABIArgInfo::getDirect()); 33182d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov} 33282d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov 333dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner//===----------------------------------------------------------------------===// 334dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner// X86-32 ABI Implementation 335dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner//===----------------------------------------------------------------------===// 3368bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 337c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov/// X86_32ABIInfo - The X86-32 ABI information. 338c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikovclass X86_32ABIInfo : public ABIInfo { 339fb67d6c3814524fdd43bd2fb159f7c594eae581cDaniel Dunbar static const unsigned MinABIStackAlignInBytes = 4; 340fb67d6c3814524fdd43bd2fb159f7c594eae581cDaniel Dunbar 3411e4249c10606f706aac181e6f5e8435ea99d9603David Chisnall bool IsDarwinVectorABI; 3421e4249c10606f706aac181e6f5e8435ea99d9603David Chisnall bool IsSmallStructInRegABI; 343c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 344c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov static bool isRegisterSize(unsigned Size) { 345c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return (Size == 8 || Size == 16 || Size == 32 || Size == 64); 346c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 347c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 348c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov static bool shouldReturnTypeInRegister(QualType Ty, ASTContext &Context); 349c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 350dc6d574155072bfb35a7a29b94ef3afa0d40fb5aDaniel Dunbar /// getIndirectResult - Give a source type \arg Ty, return a suitable result 351dc6d574155072bfb35a7a29b94ef3afa0d40fb5aDaniel Dunbar /// such that the argument will be passed in memory. 352a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner ABIArgInfo getIndirectResult(QualType Ty, bool ByVal = true) const; 353dc6d574155072bfb35a7a29b94ef3afa0d40fb5aDaniel Dunbar 354fb67d6c3814524fdd43bd2fb159f7c594eae581cDaniel Dunbar /// \brief Return the alignment to use for the given type on the stack. 355fb67d6c3814524fdd43bd2fb159f7c594eae581cDaniel Dunbar unsigned getTypeStackAlignInBytes(QualType Ty) const; 356fb67d6c3814524fdd43bd2fb159f7c594eae581cDaniel Dunbar 357c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikovpublic: 358c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 359a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner ABIArgInfo classifyReturnType(QualType RetTy) const; 360a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner ABIArgInfo classifyArgumentType(QualType RetTy) const; 361c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 362ee5dcd064a811edc90f6c1fb31a837b6c961fed7Chris Lattner virtual void computeInfo(CGFunctionInfo &FI) const { 363a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner FI.getReturnInfo() = classifyReturnType(FI.getReturnType()); 364c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov for (CGFunctionInfo::arg_iterator it = FI.arg_begin(), ie = FI.arg_end(); 365c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov it != ie; ++it) 366a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner it->info = classifyArgumentType(it->type); 367c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 368c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 369c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov virtual llvm::Value *EmitVAArg(llvm::Value *VAListAddr, QualType Ty, 370c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CodeGenFunction &CGF) const; 371c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 372ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner X86_32ABIInfo(CodeGen::CodeGenTypes &CGT, bool d, bool p) 373ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner : ABIInfo(CGT), IsDarwinVectorABI(d), IsSmallStructInRegABI(p) {} 374c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov}; 375c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 37682d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikovclass X86_32TargetCodeGenInfo : public TargetCodeGenInfo { 37782d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikovpublic: 378ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner X86_32TargetCodeGenInfo(CodeGen::CodeGenTypes &CGT, bool d, bool p) 379ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner :TargetCodeGenInfo(new X86_32ABIInfo(CGT, d, p)) {} 38074f7293eb30bf77355c20a3c2cad7b67d8ce7388Charles Davis 38174f7293eb30bf77355c20a3c2cad7b67d8ce7388Charles Davis void SetTargetAttributes(const Decl *D, llvm::GlobalValue *GV, 38274f7293eb30bf77355c20a3c2cad7b67d8ce7388Charles Davis CodeGen::CodeGenModule &CGM) const; 3836374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall 3846374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall int getDwarfEHStackPointer(CodeGen::CodeGenModule &CGM) const { 3856374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall // Darwin uses different dwarf register numbers for EH. 3866374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall if (CGM.isTargetDarwin()) return 5; 3876374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall 3886374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall return 4; 3896374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall } 3906374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall 3916374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall bool initDwarfEHRegSizeTable(CodeGen::CodeGenFunction &CGF, 3926374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall llvm::Value *Address) const; 39382d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov}; 39482d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov 39582d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov} 396c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 397c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov/// shouldReturnTypeInRegister - Determine if the given type should be 398c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov/// passed in a register (for the Darwin ABI). 399c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikovbool X86_32ABIInfo::shouldReturnTypeInRegister(QualType Ty, 400c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov ASTContext &Context) { 401c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov uint64_t Size = Context.getTypeSize(Ty); 402c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 403c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Type must be register sized. 404c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (!isRegisterSize(Size)) 405c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return false; 406c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 407c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (Ty->isVectorType()) { 408c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // 64- and 128- bit vectors inside structures are not returned in 409c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // registers. 410c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (Size == 64 || Size == 128) 411c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return false; 412c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 413c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return true; 414c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 415c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 4167711523d948bbe635f690f5795ef7ea9a3289eb2Daniel Dunbar // If this is a builtin, pointer, enum, complex type, member pointer, or 4177711523d948bbe635f690f5795ef7ea9a3289eb2Daniel Dunbar // member function pointer it is ok. 418a1842d32a1964712e42078e9b389dce9258c6a8cDaniel Dunbar if (Ty->getAs<BuiltinType>() || Ty->hasPointerRepresentation() || 41955e59e139d9ebcaae16d710472e28edbcafac98aDaniel Dunbar Ty->isAnyComplexType() || Ty->isEnumeralType() || 4207711523d948bbe635f690f5795ef7ea9a3289eb2Daniel Dunbar Ty->isBlockPointerType() || Ty->isMemberPointerType()) 421c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return true; 422c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 423c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Arrays are treated like records. 424c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (const ConstantArrayType *AT = Context.getAsConstantArrayType(Ty)) 425c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return shouldReturnTypeInRegister(AT->getElementType(), Context); 426c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 427c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Otherwise, it must be a record type. 4286217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek const RecordType *RT = Ty->getAs<RecordType>(); 429c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (!RT) return false; 430c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 431a887423cf580e19b2d03e3a0499c065730c96b28Anders Carlsson // FIXME: Traverse bases here too. 432a887423cf580e19b2d03e3a0499c065730c96b28Anders Carlsson 433c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Structure types are passed in register if all fields would be 434c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // passed in a register. 43517945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis for (RecordDecl::field_iterator i = RT->getDecl()->field_begin(), 43617945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis e = RT->getDecl()->field_end(); i != e; ++i) { 437c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov const FieldDecl *FD = *i; 438c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 439c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Empty fields are ignored. 44098303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar if (isEmptyField(Context, FD, true)) 441c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov continue; 442c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 443c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Check fields recursively. 444c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (!shouldReturnTypeInRegister(FD->getType(), Context)) 445c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return false; 446c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 447c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 448c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return true; 449c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 450c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 451a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris LattnerABIArgInfo X86_32ABIInfo::classifyReturnType(QualType RetTy) const { 452a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner if (RetTy->isVoidType()) 453c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return ABIArgInfo::getIgnore(); 4548bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 455a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner if (const VectorType *VT = RetTy->getAs<VectorType>()) { 456c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // On Darwin, some vectors are returned in registers. 4571e4249c10606f706aac181e6f5e8435ea99d9603David Chisnall if (IsDarwinVectorABI) { 458a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner uint64_t Size = getContext().getTypeSize(RetTy); 459c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 460c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // 128-bit vectors are a special case; they are returned in 461c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // registers and we need to make sure to pick a type the LLVM 462c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // backend will like. 463c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (Size == 128) 464800588fd230d2c37ddce8fbf4a3881352715d700Chris Lattner return ABIArgInfo::getDirect(llvm::VectorType::get( 465a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner llvm::Type::getInt64Ty(getVMContext()), 2)); 466c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 467c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Always return in register if it fits in a general purpose 468c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // register, or if it is 64 bits and has a single element. 469c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if ((Size == 8 || Size == 16 || Size == 32) || 470c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov (Size == 64 && VT->getNumElements() == 1)) 471800588fd230d2c37ddce8fbf4a3881352715d700Chris Lattner return ABIArgInfo::getDirect(llvm::IntegerType::get(getVMContext(), 472a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner Size)); 473c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 474c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return ABIArgInfo::getIndirect(0); 475c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 476c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 477c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return ABIArgInfo::getDirect(); 478a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner } 4798bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 480d608cdb7c044365cf4e8764ade1e11e99c176078John McCall if (isAggregateTypeForABI(RetTy)) { 481a887423cf580e19b2d03e3a0499c065730c96b28Anders Carlsson if (const RecordType *RT = RetTy->getAs<RecordType>()) { 48240092972b591646b47037d2b46b695a4014df413Anders Carlsson // Structures with either a non-trivial destructor or a non-trivial 48340092972b591646b47037d2b46b695a4014df413Anders Carlsson // copy constructor are always indirect. 48440092972b591646b47037d2b46b695a4014df413Anders Carlsson if (hasNonTrivialDestructorOrCopyConstructor(RT)) 48540092972b591646b47037d2b46b695a4014df413Anders Carlsson return ABIArgInfo::getIndirect(0, /*ByVal=*/false); 4868bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 48740092972b591646b47037d2b46b695a4014df413Anders Carlsson // Structures with flexible arrays are always indirect. 488c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (RT->getDecl()->hasFlexibleArrayMember()) 489c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return ABIArgInfo::getIndirect(0); 49040092972b591646b47037d2b46b695a4014df413Anders Carlsson } 4918bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 4921e4249c10606f706aac181e6f5e8435ea99d9603David Chisnall // If specified, structs and unions are always indirect. 4931e4249c10606f706aac181e6f5e8435ea99d9603David Chisnall if (!IsSmallStructInRegABI && !RetTy->isAnyComplexType()) 494c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return ABIArgInfo::getIndirect(0); 495c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 496c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Classify "single element" structs as their element type. 497a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner if (const Type *SeltTy = isSingleElementStruct(RetTy, getContext())) { 498183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall if (const BuiltinType *BT = SeltTy->getAs<BuiltinType>()) { 499c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (BT->isIntegerType()) { 500c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // We need to use the size of the structure, padding 501c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // bit-fields can adjust that to be larger than the single 502c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // element type. 503a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner uint64_t Size = getContext().getTypeSize(RetTy); 504800588fd230d2c37ddce8fbf4a3881352715d700Chris Lattner return ABIArgInfo::getDirect( 505a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner llvm::IntegerType::get(getVMContext(), (unsigned)Size)); 506a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner } 5078bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 508a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner if (BT->getKind() == BuiltinType::Float) { 509a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner assert(getContext().getTypeSize(RetTy) == 510a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner getContext().getTypeSize(SeltTy) && 511c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov "Unexpect single element structure size!"); 512800588fd230d2c37ddce8fbf4a3881352715d700Chris Lattner return ABIArgInfo::getDirect(llvm::Type::getFloatTy(getVMContext())); 513a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner } 5148bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 515a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner if (BT->getKind() == BuiltinType::Double) { 516a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner assert(getContext().getTypeSize(RetTy) == 517a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner getContext().getTypeSize(SeltTy) && 518c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov "Unexpect single element structure size!"); 519800588fd230d2c37ddce8fbf4a3881352715d700Chris Lattner return ABIArgInfo::getDirect(llvm::Type::getDoubleTy(getVMContext())); 520c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 521c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } else if (SeltTy->isPointerType()) { 522c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // FIXME: It would be really nice if this could come out as the proper 523c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // pointer type. 524a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner const llvm::Type *PtrTy = llvm::Type::getInt8PtrTy(getVMContext()); 525800588fd230d2c37ddce8fbf4a3881352715d700Chris Lattner return ABIArgInfo::getDirect(PtrTy); 526c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } else if (SeltTy->isVectorType()) { 527c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // 64- and 128-bit vectors are never returned in a 528c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // register when inside a structure. 529a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner uint64_t Size = getContext().getTypeSize(RetTy); 530c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (Size == 64 || Size == 128) 531c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return ABIArgInfo::getIndirect(0); 532c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 533a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner return classifyReturnType(QualType(SeltTy, 0)); 534c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 535c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 536c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 537c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Small structures which are register sized are generally returned 538c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // in a register. 539a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner if (X86_32ABIInfo::shouldReturnTypeInRegister(RetTy, getContext())) { 540a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner uint64_t Size = getContext().getTypeSize(RetTy); 541800588fd230d2c37ddce8fbf4a3881352715d700Chris Lattner return ABIArgInfo::getDirect(llvm::IntegerType::get(getVMContext(),Size)); 542c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 543c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 544c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return ABIArgInfo::getIndirect(0); 545c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 5468bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 547a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner // Treat an enum type as its underlying type. 548a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner if (const EnumType *EnumTy = RetTy->getAs<EnumType>()) 549a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner RetTy = EnumTy->getDecl()->getIntegerType(); 550a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner 551a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner return (RetTy->isPromotableIntegerType() ? 552a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner ABIArgInfo::getExtend() : ABIArgInfo::getDirect()); 553c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 554c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 55593ae947df36133c7a26a0c7d325c0679916ed2edDaniel Dunbarstatic bool isRecordWithSSEVectorType(ASTContext &Context, QualType Ty) { 55693ae947df36133c7a26a0c7d325c0679916ed2edDaniel Dunbar const RecordType *RT = Ty->getAs<RecordType>(); 55793ae947df36133c7a26a0c7d325c0679916ed2edDaniel Dunbar if (!RT) 55893ae947df36133c7a26a0c7d325c0679916ed2edDaniel Dunbar return 0; 55993ae947df36133c7a26a0c7d325c0679916ed2edDaniel Dunbar const RecordDecl *RD = RT->getDecl(); 56093ae947df36133c7a26a0c7d325c0679916ed2edDaniel Dunbar 56193ae947df36133c7a26a0c7d325c0679916ed2edDaniel Dunbar // If this is a C++ record, check the bases first. 56293ae947df36133c7a26a0c7d325c0679916ed2edDaniel Dunbar if (const CXXRecordDecl *CXXRD = dyn_cast<CXXRecordDecl>(RD)) 56393ae947df36133c7a26a0c7d325c0679916ed2edDaniel Dunbar for (CXXRecordDecl::base_class_const_iterator i = CXXRD->bases_begin(), 56493ae947df36133c7a26a0c7d325c0679916ed2edDaniel Dunbar e = CXXRD->bases_end(); i != e; ++i) 56593ae947df36133c7a26a0c7d325c0679916ed2edDaniel Dunbar if (!isRecordWithSSEVectorType(Context, i->getType())) 56693ae947df36133c7a26a0c7d325c0679916ed2edDaniel Dunbar return false; 56793ae947df36133c7a26a0c7d325c0679916ed2edDaniel Dunbar 56893ae947df36133c7a26a0c7d325c0679916ed2edDaniel Dunbar for (RecordDecl::field_iterator i = RD->field_begin(), e = RD->field_end(); 56993ae947df36133c7a26a0c7d325c0679916ed2edDaniel Dunbar i != e; ++i) { 57093ae947df36133c7a26a0c7d325c0679916ed2edDaniel Dunbar QualType FT = i->getType(); 57193ae947df36133c7a26a0c7d325c0679916ed2edDaniel Dunbar 57293ae947df36133c7a26a0c7d325c0679916ed2edDaniel Dunbar if (FT->getAs<VectorType>() && Context.getTypeSize(Ty) == 128) 57393ae947df36133c7a26a0c7d325c0679916ed2edDaniel Dunbar return true; 57493ae947df36133c7a26a0c7d325c0679916ed2edDaniel Dunbar 57593ae947df36133c7a26a0c7d325c0679916ed2edDaniel Dunbar if (isRecordWithSSEVectorType(Context, FT)) 57693ae947df36133c7a26a0c7d325c0679916ed2edDaniel Dunbar return true; 57793ae947df36133c7a26a0c7d325c0679916ed2edDaniel Dunbar } 57893ae947df36133c7a26a0c7d325c0679916ed2edDaniel Dunbar 57993ae947df36133c7a26a0c7d325c0679916ed2edDaniel Dunbar return false; 58093ae947df36133c7a26a0c7d325c0679916ed2edDaniel Dunbar} 58193ae947df36133c7a26a0c7d325c0679916ed2edDaniel Dunbar 582fb67d6c3814524fdd43bd2fb159f7c594eae581cDaniel Dunbarunsigned X86_32ABIInfo::getTypeStackAlignInBytes(QualType Ty) const { 583fb67d6c3814524fdd43bd2fb159f7c594eae581cDaniel Dunbar // On non-Darwin, the stack type alignment is always 4. 584fb67d6c3814524fdd43bd2fb159f7c594eae581cDaniel Dunbar if (!IsDarwinVectorABI) 585fb67d6c3814524fdd43bd2fb159f7c594eae581cDaniel Dunbar return MinABIStackAlignInBytes; 586fb67d6c3814524fdd43bd2fb159f7c594eae581cDaniel Dunbar 587fb67d6c3814524fdd43bd2fb159f7c594eae581cDaniel Dunbar // Otherwise, if the alignment is less than or equal to 4, use the minimum ABI 588fb67d6c3814524fdd43bd2fb159f7c594eae581cDaniel Dunbar // alignment. 589fb67d6c3814524fdd43bd2fb159f7c594eae581cDaniel Dunbar unsigned Align = getContext().getTypeAlign(Ty) / 8; 590fb67d6c3814524fdd43bd2fb159f7c594eae581cDaniel Dunbar if (Align <= MinABIStackAlignInBytes) 591fb67d6c3814524fdd43bd2fb159f7c594eae581cDaniel Dunbar return MinABIStackAlignInBytes; 592fb67d6c3814524fdd43bd2fb159f7c594eae581cDaniel Dunbar 59393ae947df36133c7a26a0c7d325c0679916ed2edDaniel Dunbar // Otherwise, if the type contains an SSE vector type, the alignment is 16. 59493ae947df36133c7a26a0c7d325c0679916ed2edDaniel Dunbar if (isRecordWithSSEVectorType(getContext(), Ty)) 59593ae947df36133c7a26a0c7d325c0679916ed2edDaniel Dunbar return 16; 59693ae947df36133c7a26a0c7d325c0679916ed2edDaniel Dunbar 59793ae947df36133c7a26a0c7d325c0679916ed2edDaniel Dunbar return MinABIStackAlignInBytes; 598fb67d6c3814524fdd43bd2fb159f7c594eae581cDaniel Dunbar} 599fb67d6c3814524fdd43bd2fb159f7c594eae581cDaniel Dunbar 600a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris LattnerABIArgInfo X86_32ABIInfo::getIndirectResult(QualType Ty, bool ByVal) const { 60146c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar if (!ByVal) 60246c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar return ABIArgInfo::getIndirect(0, false); 60346c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar 60446c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar // Compute the byval alignment. We trust the back-end to honor the 60546c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar // minimum ABI alignment for byval, to make cleaner IR. 606fb67d6c3814524fdd43bd2fb159f7c594eae581cDaniel Dunbar unsigned Align = getTypeStackAlignInBytes(Ty); 607fb67d6c3814524fdd43bd2fb159f7c594eae581cDaniel Dunbar if (Align > MinABIStackAlignInBytes) 60846c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar return ABIArgInfo::getIndirect(Align); 60946c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar return ABIArgInfo::getIndirect(0); 610dc6d574155072bfb35a7a29b94ef3afa0d40fb5aDaniel Dunbar} 611dc6d574155072bfb35a7a29b94ef3afa0d40fb5aDaniel Dunbar 612a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris LattnerABIArgInfo X86_32ABIInfo::classifyArgumentType(QualType Ty) const { 613c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // FIXME: Set alignment on indirect arguments. 614d608cdb7c044365cf4e8764ade1e11e99c176078John McCall if (isAggregateTypeForABI(Ty)) { 615c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Structures with flexible arrays are always indirect. 616a887423cf580e19b2d03e3a0499c065730c96b28Anders Carlsson if (const RecordType *RT = Ty->getAs<RecordType>()) { 617a887423cf580e19b2d03e3a0499c065730c96b28Anders Carlsson // Structures with either a non-trivial destructor or a non-trivial 618a887423cf580e19b2d03e3a0499c065730c96b28Anders Carlsson // copy constructor are always indirect. 619a887423cf580e19b2d03e3a0499c065730c96b28Anders Carlsson if (hasNonTrivialDestructorOrCopyConstructor(RT)) 620a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner return getIndirectResult(Ty, /*ByVal=*/false); 621dc6d574155072bfb35a7a29b94ef3afa0d40fb5aDaniel Dunbar 622c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (RT->getDecl()->hasFlexibleArrayMember()) 623a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner return getIndirectResult(Ty); 624a887423cf580e19b2d03e3a0499c065730c96b28Anders Carlsson } 625c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 626c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Ignore empty structs. 627a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner if (Ty->isStructureType() && getContext().getTypeSize(Ty) == 0) 628c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return ABIArgInfo::getIgnore(); 629c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 63053012f447145bfd5e3a759f069a2bdf2b6705708Daniel Dunbar // Expand small (<= 128-bit) record types when we know that the stack layout 63153012f447145bfd5e3a759f069a2bdf2b6705708Daniel Dunbar // of those arguments will match the struct. This is important because the 63253012f447145bfd5e3a759f069a2bdf2b6705708Daniel Dunbar // LLVM backend isn't smart enough to remove byval, which inhibits many 63353012f447145bfd5e3a759f069a2bdf2b6705708Daniel Dunbar // optimizations. 634a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner if (getContext().getTypeSize(Ty) <= 4*32 && 635a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner canExpandIndirectArgument(Ty, getContext())) 63653012f447145bfd5e3a759f069a2bdf2b6705708Daniel Dunbar return ABIArgInfo::getExpand(); 637c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 638a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner return getIndirectResult(Ty); 6398bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer } 6408bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 641bbae8b40cd37d5b2815f8450cb588a41da89d7e5Chris Lattner if (const VectorType *VT = Ty->getAs<VectorType>()) { 6427b733505defd34f1bb7e74d9526be0bc41e76693Chris Lattner // On Darwin, some vectors are passed in memory, we handle this by passing 6437b733505defd34f1bb7e74d9526be0bc41e76693Chris Lattner // it as an i8/i16/i32/i64. 644bbae8b40cd37d5b2815f8450cb588a41da89d7e5Chris Lattner if (IsDarwinVectorABI) { 645bbae8b40cd37d5b2815f8450cb588a41da89d7e5Chris Lattner uint64_t Size = getContext().getTypeSize(Ty); 646bbae8b40cd37d5b2815f8450cb588a41da89d7e5Chris Lattner if ((Size == 8 || Size == 16 || Size == 32) || 647bbae8b40cd37d5b2815f8450cb588a41da89d7e5Chris Lattner (Size == 64 && VT->getNumElements() == 1)) 648bbae8b40cd37d5b2815f8450cb588a41da89d7e5Chris Lattner return ABIArgInfo::getDirect(llvm::IntegerType::get(getVMContext(), 649bbae8b40cd37d5b2815f8450cb588a41da89d7e5Chris Lattner Size)); 650bbae8b40cd37d5b2815f8450cb588a41da89d7e5Chris Lattner } 651bbae8b40cd37d5b2815f8450cb588a41da89d7e5Chris Lattner 652bbae8b40cd37d5b2815f8450cb588a41da89d7e5Chris Lattner return ABIArgInfo::getDirect(); 653bbae8b40cd37d5b2815f8450cb588a41da89d7e5Chris Lattner } 654bbae8b40cd37d5b2815f8450cb588a41da89d7e5Chris Lattner 655bbae8b40cd37d5b2815f8450cb588a41da89d7e5Chris Lattner 656a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner if (const EnumType *EnumTy = Ty->getAs<EnumType>()) 657a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner Ty = EnumTy->getDecl()->getIntegerType(); 658aa74a1e49f7c4b89539830290f76fe2c3e97187fDouglas Gregor 659a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner return (Ty->isPromotableIntegerType() ? 660a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner ABIArgInfo::getExtend() : ABIArgInfo::getDirect()); 661c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 662c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 663c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikovllvm::Value *X86_32ABIInfo::EmitVAArg(llvm::Value *VAListAddr, QualType Ty, 664c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CodeGenFunction &CGF) const { 6653c0ef8cc0dc246bd3083e8cdd63005e8873d36d2Benjamin Kramer const llvm::Type *BP = llvm::Type::getInt8PtrTy(CGF.getLLVMContext()); 66696e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson const llvm::Type *BPP = llvm::PointerType::getUnqual(BP); 667c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 668c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CGBuilderTy &Builder = CGF.Builder; 669c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Value *VAListAddrAsBPP = Builder.CreateBitCast(VAListAddr, BPP, 670c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov "ap"); 671c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Value *Addr = Builder.CreateLoad(VAListAddrAsBPP, "ap.cur"); 672c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Type *PTy = 67396e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(CGF.ConvertType(Ty)); 674c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Value *AddrTyped = Builder.CreateBitCast(Addr, PTy); 675c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 676c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov uint64_t Offset = 677c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::RoundUpToAlignment(CGF.getContext().getTypeSize(Ty) / 8, 4); 678c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Value *NextAddr = 67977b89b87c3b9220fea1bc80f6d6598d2003cc8a8Chris Lattner Builder.CreateGEP(Addr, llvm::ConstantInt::get(CGF.Int32Ty, Offset), 680c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov "ap.next"); 681c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Builder.CreateStore(NextAddr, VAListAddrAsBPP); 682c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 683c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return AddrTyped; 684c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 685c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 68674f7293eb30bf77355c20a3c2cad7b67d8ce7388Charles Davisvoid X86_32TargetCodeGenInfo::SetTargetAttributes(const Decl *D, 68774f7293eb30bf77355c20a3c2cad7b67d8ce7388Charles Davis llvm::GlobalValue *GV, 68874f7293eb30bf77355c20a3c2cad7b67d8ce7388Charles Davis CodeGen::CodeGenModule &CGM) const { 68974f7293eb30bf77355c20a3c2cad7b67d8ce7388Charles Davis if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 69074f7293eb30bf77355c20a3c2cad7b67d8ce7388Charles Davis if (FD->hasAttr<X86ForceAlignArgPointerAttr>()) { 69174f7293eb30bf77355c20a3c2cad7b67d8ce7388Charles Davis // Get the LLVM function. 69274f7293eb30bf77355c20a3c2cad7b67d8ce7388Charles Davis llvm::Function *Fn = cast<llvm::Function>(GV); 69374f7293eb30bf77355c20a3c2cad7b67d8ce7388Charles Davis 69474f7293eb30bf77355c20a3c2cad7b67d8ce7388Charles Davis // Now add the 'alignstack' attribute with a value of 16. 69574f7293eb30bf77355c20a3c2cad7b67d8ce7388Charles Davis Fn->addFnAttr(llvm::Attribute::constructStackAlignmentFromInt(16)); 69674f7293eb30bf77355c20a3c2cad7b67d8ce7388Charles Davis } 69774f7293eb30bf77355c20a3c2cad7b67d8ce7388Charles Davis } 69874f7293eb30bf77355c20a3c2cad7b67d8ce7388Charles Davis} 69974f7293eb30bf77355c20a3c2cad7b67d8ce7388Charles Davis 7006374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCallbool X86_32TargetCodeGenInfo::initDwarfEHRegSizeTable( 7016374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall CodeGen::CodeGenFunction &CGF, 7026374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall llvm::Value *Address) const { 7036374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall CodeGen::CGBuilderTy &Builder = CGF.Builder; 7046374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall llvm::LLVMContext &Context = CGF.getLLVMContext(); 7056374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall 7066374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall const llvm::IntegerType *i8 = llvm::Type::getInt8Ty(Context); 7076374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall llvm::Value *Four8 = llvm::ConstantInt::get(i8, 4); 7088bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 7096374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall // 0-7 are the eight integer registers; the order is different 7106374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall // on Darwin (for EH), but the range is the same. 7116374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall // 8 is %eip. 712aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall AssignToArrayRange(Builder, Address, Four8, 0, 8); 7136374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall 7146374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall if (CGF.CGM.isTargetDarwin()) { 7156374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall // 12-16 are st(0..4). Not sure why we stop at 4. 7166374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall // These have size 16, which is sizeof(long double) on 7176374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall // platforms with 8-byte alignment for that type. 7186374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall llvm::Value *Sixteen8 = llvm::ConstantInt::get(i8, 16); 719aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall AssignToArrayRange(Builder, Address, Sixteen8, 12, 16); 7208bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 7216374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall } else { 7226374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall // 9 is %eflags, which doesn't get a size on Darwin for some 7236374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall // reason. 7246374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall Builder.CreateStore(Four8, Builder.CreateConstInBoundsGEP1_32(Address, 9)); 7256374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall 7266374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall // 11-16 are st(0..5). Not sure why we stop at 5. 7276374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall // These have size 12, which is sizeof(long double) on 7286374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall // platforms with 4-byte alignment for that type. 7296374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall llvm::Value *Twelve8 = llvm::ConstantInt::get(i8, 12); 730aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall AssignToArrayRange(Builder, Address, Twelve8, 11, 16); 731aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall } 7326374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall 7336374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall return false; 7346374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall} 7356374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall 736dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner//===----------------------------------------------------------------------===// 737dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner// X86-64 ABI Implementation 738dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner//===----------------------------------------------------------------------===// 739dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner 740dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner 741c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikovnamespace { 742c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov/// X86_64ABIInfo - The X86_64 ABI information. 743c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikovclass X86_64ABIInfo : public ABIInfo { 744c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov enum Class { 745c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Integer = 0, 746c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov SSE, 747c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov SSEUp, 748c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov X87, 749c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov X87Up, 750c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov ComplexX87, 751c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov NoClass, 752c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Memory 753c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov }; 754c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 755c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// merge - Implement the X86_64 ABI merging algorithm. 756c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// 757c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// Merge an accumulating classification \arg Accum with a field 758c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// classification \arg Field. 759c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// 760c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// \param Accum - The accumulating classification. This should 761c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// always be either NoClass or the result of a previous merge 762c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// call. In addition, this should never be Memory (the caller 763c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// should just return Memory for the aggregate). 7641090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner static Class merge(Class Accum, Class Field); 765c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 766c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// classify - Determine the x86_64 register classes in which the 767c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// given type T should be passed. 768c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// 769c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// \param Lo - The classification for the parts of the type 770c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// residing in the low word of the containing object. 771c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// 772c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// \param Hi - The classification for the parts of the type 773c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// residing in the high word of the containing object. 774c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// 775c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// \param OffsetBase - The bit offset of this type in the 776c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// containing object. Some parameters are classified different 777c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// depending on whether they straddle an eightbyte boundary. 778c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// 779c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// If a word is unused its result will be NoClass; if a type should 780c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// be passed in Memory then at least the classification of \arg Lo 781c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// will be Memory. 782c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// 783c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// The \arg Lo class will be NoClass iff the argument is ignored. 784c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// 785c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// If the \arg Lo class is ComplexX87, then the \arg Hi class will 786c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// also be ComplexX87. 7879c254f0415bef9a0bafe5b5026ddb54b727597b1Chris Lattner void classify(QualType T, uint64_t OffsetBase, Class &Lo, Class &Hi) const; 788c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 7890f408f5242522cbede304472e17931357c1b573dChris Lattner const llvm::Type *Get16ByteVectorType(QualType Ty) const; 790603519d269d48dca99927f0ad65e92099bd76161Chris Lattner const llvm::Type *GetSSETypeAtOffset(const llvm::Type *IRType, 791f47c944b5710a545d564b4d4b641a2f8bac96af3Chris Lattner unsigned IROffset, QualType SourceTy, 792f47c944b5710a545d564b4d4b641a2f8bac96af3Chris Lattner unsigned SourceOffset) const; 7930d2656d77053cc2ed6f3a3acdf12d67807c7f3a2Chris Lattner const llvm::Type *GetINTEGERTypeAtOffset(const llvm::Type *IRType, 7940d2656d77053cc2ed6f3a3acdf12d67807c7f3a2Chris Lattner unsigned IROffset, QualType SourceTy, 7950d2656d77053cc2ed6f3a3acdf12d67807c7f3a2Chris Lattner unsigned SourceOffset) const; 7968bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 797c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// getIndirectResult - Give a source type \arg Ty, return a suitable result 79846c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar /// such that the argument will be returned in memory. 7999c254f0415bef9a0bafe5b5026ddb54b727597b1Chris Lattner ABIArgInfo getIndirectReturnResult(QualType Ty) const; 80046c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar 80146c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar /// getIndirectResult - Give a source type \arg Ty, return a suitable result 802c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// such that the argument will be passed in memory. 8039c254f0415bef9a0bafe5b5026ddb54b727597b1Chris Lattner ABIArgInfo getIndirectResult(QualType Ty) const; 804c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 805a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner ABIArgInfo classifyReturnType(QualType RetTy) const; 806c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 8075868ca2eb7f00d815f62e46f5a171eb6e5f91b5bChris Lattner ABIArgInfo classifyArgumentType(QualType Ty, unsigned &neededInt, 8085868ca2eb7f00d815f62e46f5a171eb6e5f91b5bChris Lattner unsigned &neededSSE) const; 809c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 810c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikovpublic: 811ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner X86_64ABIInfo(CodeGen::CodeGenTypes &CGT) : ABIInfo(CGT) {} 8129c254f0415bef9a0bafe5b5026ddb54b727597b1Chris Lattner 813ee5dcd064a811edc90f6c1fb31a837b6c961fed7Chris Lattner virtual void computeInfo(CGFunctionInfo &FI) const; 814c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 815c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov virtual llvm::Value *EmitVAArg(llvm::Value *VAListAddr, QualType Ty, 816c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CodeGenFunction &CGF) const; 817c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov}; 81882d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov 819f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner/// WinX86_64ABIInfo - The Windows X86_64 ABI information. 820f13721dd91dda7675e499331a2770308ad20ca61Chris Lattnerclass WinX86_64ABIInfo : public X86_64ABIInfo { 821f13721dd91dda7675e499331a2770308ad20ca61Chris Lattnerpublic: 822f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner WinX86_64ABIInfo(CodeGen::CodeGenTypes &CGT) : X86_64ABIInfo(CGT) {} 823f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner 824f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner virtual llvm::Value *EmitVAArg(llvm::Value *VAListAddr, QualType Ty, 825f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner CodeGenFunction &CGF) const; 826f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner}; 827f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner 82882d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikovclass X86_64TargetCodeGenInfo : public TargetCodeGenInfo { 82982d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikovpublic: 830ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner X86_64TargetCodeGenInfo(CodeGen::CodeGenTypes &CGT) 831ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner : TargetCodeGenInfo(new X86_64ABIInfo(CGT)) {} 8326374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall 8336374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall int getDwarfEHStackPointer(CodeGen::CodeGenModule &CGM) const { 8346374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall return 7; 8356374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall } 8366374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall 8376374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall bool initDwarfEHRegSizeTable(CodeGen::CodeGenFunction &CGF, 8386374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall llvm::Value *Address) const { 8396374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall CodeGen::CGBuilderTy &Builder = CGF.Builder; 8406374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall llvm::LLVMContext &Context = CGF.getLLVMContext(); 8416374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall 8426374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall const llvm::IntegerType *i8 = llvm::Type::getInt8Ty(Context); 8436374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall llvm::Value *Eight8 = llvm::ConstantInt::get(i8, 8); 8448bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 845aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall // 0-15 are the 16 integer registers. 846aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall // 16 is %rip. 847aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall AssignToArrayRange(Builder, Address, Eight8, 0, 16); 8486374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall 8496374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall return false; 8506374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall } 85182d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov}; 85282d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov 853f13721dd91dda7675e499331a2770308ad20ca61Chris Lattnerclass WinX86_64TargetCodeGenInfo : public TargetCodeGenInfo { 854f13721dd91dda7675e499331a2770308ad20ca61Chris Lattnerpublic: 855f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner WinX86_64TargetCodeGenInfo(CodeGen::CodeGenTypes &CGT) 856f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner : TargetCodeGenInfo(new WinX86_64ABIInfo(CGT)) {} 857f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner 858f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner int getDwarfEHStackPointer(CodeGen::CodeGenModule &CGM) const { 859f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner return 7; 860f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner } 861f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner 862f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner bool initDwarfEHRegSizeTable(CodeGen::CodeGenFunction &CGF, 863f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner llvm::Value *Address) const { 864f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner CodeGen::CGBuilderTy &Builder = CGF.Builder; 865f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner llvm::LLVMContext &Context = CGF.getLLVMContext(); 866f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner 867f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner const llvm::IntegerType *i8 = llvm::Type::getInt8Ty(Context); 868f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner llvm::Value *Eight8 = llvm::ConstantInt::get(i8, 8); 869f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner 870f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner // 0-15 are the 16 integer registers. 871f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner // 16 is %rip. 872f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner AssignToArrayRange(Builder, Address, Eight8, 0, 16); 873f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner 874f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner return false; 875f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner } 876f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner}; 877f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner 878c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 879c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 8801090a9ba0902380dbd97d0a500daa4c373712df9Chris LattnerX86_64ABIInfo::Class X86_64ABIInfo::merge(Class Accum, Class Field) { 881c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.2.3p2: Rule 4. Each field of an object is 882c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // classified recursively so that always two fields are 883c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // considered. The resulting class is calculated according to 884c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // the classes of the fields in the eightbyte: 885c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // 886c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // (a) If both classes are equal, this is the resulting class. 887c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // 888c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // (b) If one of the classes is NO_CLASS, the resulting class is 889c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // the other class. 890c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // 891c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // (c) If one of the classes is MEMORY, the result is the MEMORY 892c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // class. 893c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // 894c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // (d) If one of the classes is INTEGER, the result is the 895c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // INTEGER. 896c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // 897c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // (e) If one of the classes is X87, X87UP, COMPLEX_X87 class, 898c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // MEMORY is used as class. 899c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // 900c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // (f) Otherwise class SSE is used. 901c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 902c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Accum should never be memory (we should have returned) or 903c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // ComplexX87 (because this cannot be passed in a structure). 904c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov assert((Accum != Memory && Accum != ComplexX87) && 905c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov "Invalid accumulated classification during merge."); 906c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (Accum == Field || Field == NoClass) 907c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return Accum; 9081090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner if (Field == Memory) 909c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return Memory; 9101090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner if (Accum == NoClass) 911c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return Field; 9121090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner if (Accum == Integer || Field == Integer) 913c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return Integer; 9141090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner if (Field == X87 || Field == X87Up || Field == ComplexX87 || 9151090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner Accum == X87 || Accum == X87Up) 916c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return Memory; 9171090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner return SSE; 918c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 919c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 920bcaedaed309ce453a992fdeef4a4c908cc7d9dfbChris Lattnervoid X86_64ABIInfo::classify(QualType Ty, uint64_t OffsetBase, 921c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Class &Lo, Class &Hi) const { 922c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // FIXME: This code can be simplified by introducing a simple value class for 923c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Class pairs with appropriate constructor methods for the various 924c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // situations. 925c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 926c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // FIXME: Some of the split computations are wrong; unaligned vectors 927c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // shouldn't be passed in registers for example, so there is no chance they 928c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // can straddle an eightbyte. Verify & simplify. 929c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 930c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Lo = Hi = NoClass; 931c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 932c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Class &Current = OffsetBase < 64 ? Lo : Hi; 933c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Current = Memory; 934c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 935183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall if (const BuiltinType *BT = Ty->getAs<BuiltinType>()) { 936c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov BuiltinType::Kind k = BT->getKind(); 937c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 938c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (k == BuiltinType::Void) { 939c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Current = NoClass; 940c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } else if (k == BuiltinType::Int128 || k == BuiltinType::UInt128) { 941c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Lo = Integer; 942c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Hi = Integer; 943c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } else if (k >= BuiltinType::Bool && k <= BuiltinType::LongLong) { 944c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Current = Integer; 945c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } else if (k == BuiltinType::Float || k == BuiltinType::Double) { 946c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Current = SSE; 947c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } else if (k == BuiltinType::LongDouble) { 948c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Lo = X87; 949c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Hi = X87Up; 950c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 951c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // FIXME: _Decimal32 and _Decimal64 are SSE. 952c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // FIXME: _float128 and _Decimal128 are (SSE, SSEUp). 9531090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner return; 9541090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner } 9558bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 9561090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner if (const EnumType *ET = Ty->getAs<EnumType>()) { 957c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Classify the underlying integer type. 9589c254f0415bef9a0bafe5b5026ddb54b727597b1Chris Lattner classify(ET->getDecl()->getIntegerType(), OffsetBase, Lo, Hi); 9591090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner return; 9601090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner } 9618bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 9621090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner if (Ty->hasPointerRepresentation()) { 963c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Current = Integer; 9641090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner return; 9651090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner } 9668bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 9671090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner if (Ty->isMemberPointerType()) { 96867d438d39a1cc37c372a2684dc354f58d0169bb1Daniel Dunbar if (Ty->isMemberFunctionPointerType()) 96967d438d39a1cc37c372a2684dc354f58d0169bb1Daniel Dunbar Lo = Hi = Integer; 97067d438d39a1cc37c372a2684dc354f58d0169bb1Daniel Dunbar else 97167d438d39a1cc37c372a2684dc354f58d0169bb1Daniel Dunbar Current = Integer; 9721090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner return; 9731090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner } 9748bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 9751090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner if (const VectorType *VT = Ty->getAs<VectorType>()) { 976ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner uint64_t Size = getContext().getTypeSize(VT); 977c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (Size == 32) { 978c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // gcc passes all <4 x char>, <2 x short>, <1 x int>, <1 x 979c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // float> as integer. 980c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Current = Integer; 981c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 982c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // If this type crosses an eightbyte boundary, it should be 983c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // split. 984c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov uint64_t EB_Real = (OffsetBase) / 64; 985c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov uint64_t EB_Imag = (OffsetBase + Size - 1) / 64; 986c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (EB_Real != EB_Imag) 987c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Hi = Lo; 988c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } else if (Size == 64) { 989c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // gcc passes <1 x double> in memory. :( 990c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (VT->getElementType()->isSpecificBuiltinType(BuiltinType::Double)) 991c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return; 992c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 993c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // gcc passes <1 x long long> as INTEGER. 994473f8e723be93d84bd5fd15b094f4184802d4676Chris Lattner if (VT->getElementType()->isSpecificBuiltinType(BuiltinType::LongLong) || 9950fefa4175b0c9101564946f6a975ee9946c16d4bChris Lattner VT->getElementType()->isSpecificBuiltinType(BuiltinType::ULongLong) || 9960fefa4175b0c9101564946f6a975ee9946c16d4bChris Lattner VT->getElementType()->isSpecificBuiltinType(BuiltinType::Long) || 9970fefa4175b0c9101564946f6a975ee9946c16d4bChris Lattner VT->getElementType()->isSpecificBuiltinType(BuiltinType::ULong)) 998c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Current = Integer; 999c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov else 1000c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Current = SSE; 1001c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1002c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // If this type crosses an eightbyte boundary, it should be 1003c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // split. 1004c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (OffsetBase && OffsetBase != 64) 1005c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Hi = Lo; 1006c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } else if (Size == 128) { 1007c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Lo = SSE; 1008c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Hi = SSEUp; 1009c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 10101090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner return; 10111090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner } 10128bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 10131090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner if (const ComplexType *CT = Ty->getAs<ComplexType>()) { 1014ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner QualType ET = getContext().getCanonicalType(CT->getElementType()); 1015c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1016ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner uint64_t Size = getContext().getTypeSize(Ty); 10172ade35e2cfd554e49d35a52047cea98a82787af9Douglas Gregor if (ET->isIntegralOrEnumerationType()) { 1018c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (Size <= 64) 1019c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Current = Integer; 1020c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov else if (Size <= 128) 1021c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Lo = Hi = Integer; 1022ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner } else if (ET == getContext().FloatTy) 1023c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Current = SSE; 1024ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner else if (ET == getContext().DoubleTy) 1025c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Lo = Hi = SSE; 1026ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner else if (ET == getContext().LongDoubleTy) 1027c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Current = ComplexX87; 1028c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1029c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // If this complex type crosses an eightbyte boundary then it 1030c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // should be split. 1031c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov uint64_t EB_Real = (OffsetBase) / 64; 1032ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner uint64_t EB_Imag = (OffsetBase + getContext().getTypeSize(ET)) / 64; 1033c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (Hi == NoClass && EB_Real != EB_Imag) 1034c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Hi = Lo; 10358bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 10361090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner return; 10371090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner } 10388bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1039ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner if (const ConstantArrayType *AT = getContext().getAsConstantArrayType(Ty)) { 1040c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Arrays are treated like structures. 1041c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1042ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner uint64_t Size = getContext().getTypeSize(Ty); 1043c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1044c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.2.3p2: Rule 1. If the size of an object is larger 1045c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // than two eightbytes, ..., it has class MEMORY. 1046c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (Size > 128) 1047c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return; 1048c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1049c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.2.3p2: Rule 1. If ..., or it contains unaligned 1050c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // fields, it has class MEMORY. 1051c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // 1052c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Only need to check alignment of array base. 1053ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner if (OffsetBase % getContext().getTypeAlign(AT->getElementType())) 1054c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return; 1055c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1056c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Otherwise implement simplified merge. We could be smarter about 1057c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // this, but it isn't worth it and would be harder to verify. 1058c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Current = NoClass; 1059ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner uint64_t EltSize = getContext().getTypeSize(AT->getElementType()); 1060c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov uint64_t ArraySize = AT->getSize().getZExtValue(); 1061c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov for (uint64_t i=0, Offset=OffsetBase; i<ArraySize; ++i, Offset += EltSize) { 1062c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Class FieldLo, FieldHi; 10639c254f0415bef9a0bafe5b5026ddb54b727597b1Chris Lattner classify(AT->getElementType(), Offset, FieldLo, FieldHi); 1064c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Lo = merge(Lo, FieldLo); 1065c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Hi = merge(Hi, FieldHi); 1066c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (Lo == Memory || Hi == Memory) 1067c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov break; 1068c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 1069c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1070c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Do post merger cleanup (see below). Only case we worry about is Memory. 1071c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (Hi == Memory) 1072c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Lo = Memory; 1073c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov assert((Hi != SSEUp || Lo == SSE) && "Invalid SSEUp array classification."); 10741090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner return; 10751090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner } 10768bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 10771090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner if (const RecordType *RT = Ty->getAs<RecordType>()) { 1078ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner uint64_t Size = getContext().getTypeSize(Ty); 1079c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1080c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.2.3p2: Rule 1. If the size of an object is larger 1081c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // than two eightbytes, ..., it has class MEMORY. 1082c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (Size > 128) 1083c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return; 1084c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 10850a8f847e97f40cce51dc69051b964732333dc028Anders Carlsson // AMD64-ABI 3.2.3p2: Rule 2. If a C++ object has either a non-trivial 10860a8f847e97f40cce51dc69051b964732333dc028Anders Carlsson // copy constructor or a non-trivial destructor, it is passed by invisible 10870a8f847e97f40cce51dc69051b964732333dc028Anders Carlsson // reference. 10880a8f847e97f40cce51dc69051b964732333dc028Anders Carlsson if (hasNonTrivialDestructorOrCopyConstructor(RT)) 10890a8f847e97f40cce51dc69051b964732333dc028Anders Carlsson return; 1090ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar 1091c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov const RecordDecl *RD = RT->getDecl(); 1092c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1093c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Assume variable sized types are passed in memory. 1094c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (RD->hasFlexibleArrayMember()) 1095c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return; 1096c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1097ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner const ASTRecordLayout &Layout = getContext().getASTRecordLayout(RD); 1098c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1099c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Reset Lo class, this will be recomputed. 1100c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Current = NoClass; 1101ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar 1102ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar // If this is a C++ record, classify the bases first. 1103ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar if (const CXXRecordDecl *CXXRD = dyn_cast<CXXRecordDecl>(RD)) { 1104ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar for (CXXRecordDecl::base_class_const_iterator i = CXXRD->bases_begin(), 1105ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar e = CXXRD->bases_end(); i != e; ++i) { 1106ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar assert(!i->isVirtual() && !i->getType()->isDependentType() && 1107ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar "Unexpected base class!"); 1108ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar const CXXRecordDecl *Base = 1109ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar cast<CXXRecordDecl>(i->getType()->getAs<RecordType>()->getDecl()); 1110ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar 1111ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar // Classify this field. 1112ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar // 1113ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar // AMD64-ABI 3.2.3p2: Rule 3. If the size of the aggregate exceeds a 1114ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar // single eightbyte, each is classified separately. Each eightbyte gets 1115ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar // initialized to class NO_CLASS. 1116ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar Class FieldLo, FieldHi; 1117ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar uint64_t Offset = OffsetBase + Layout.getBaseClassOffset(Base); 11189c254f0415bef9a0bafe5b5026ddb54b727597b1Chris Lattner classify(i->getType(), Offset, FieldLo, FieldHi); 1119ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar Lo = merge(Lo, FieldLo); 1120ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar Hi = merge(Hi, FieldHi); 1121ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar if (Lo == Memory || Hi == Memory) 1122ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar break; 1123ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar } 1124ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar } 1125ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar 1126ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar // Classify the fields one at a time, merging the results. 1127c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov unsigned idx = 0; 112817945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis for (RecordDecl::field_iterator i = RD->field_begin(), e = RD->field_end(); 112917945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis i != e; ++i, ++idx) { 1130c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov uint64_t Offset = OffsetBase + Layout.getFieldOffset(idx); 1131c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov bool BitField = i->isBitField(); 1132c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1133c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.2.3p2: Rule 1. If ..., or it contains unaligned 1134c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // fields, it has class MEMORY. 1135c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // 1136c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Note, skip this test for bit-fields, see below. 1137ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner if (!BitField && Offset % getContext().getTypeAlign(i->getType())) { 1138c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Lo = Memory; 1139c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return; 1140c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 1141c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1142c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Classify this field. 1143c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // 1144c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.2.3p2: Rule 3. If the size of the aggregate 1145c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // exceeds a single eightbyte, each is classified 1146c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // separately. Each eightbyte gets initialized to class 1147c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // NO_CLASS. 1148c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Class FieldLo, FieldHi; 1149c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1150c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Bit-fields require special handling, they do not force the 1151c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // structure to be passed in memory even if unaligned, and 1152c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // therefore they can straddle an eightbyte. 1153c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (BitField) { 1154c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Ignore padding bit-fields. 1155c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (i->isUnnamedBitfield()) 1156c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov continue; 1157c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1158c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov uint64_t Offset = OffsetBase + Layout.getFieldOffset(idx); 1159ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner uint64_t Size = 1160ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner i->getBitWidth()->EvaluateAsInt(getContext()).getZExtValue(); 1161c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1162c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov uint64_t EB_Lo = Offset / 64; 1163c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov uint64_t EB_Hi = (Offset + Size - 1) / 64; 1164c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov FieldLo = FieldHi = NoClass; 1165c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (EB_Lo) { 1166c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov assert(EB_Hi == EB_Lo && "Invalid classification, type > 16 bytes."); 1167c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov FieldLo = NoClass; 1168c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov FieldHi = Integer; 1169c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } else { 1170c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov FieldLo = Integer; 1171c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov FieldHi = EB_Hi ? Integer : NoClass; 1172c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 1173c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } else 11749c254f0415bef9a0bafe5b5026ddb54b727597b1Chris Lattner classify(i->getType(), Offset, FieldLo, FieldHi); 1175c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Lo = merge(Lo, FieldLo); 1176c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Hi = merge(Hi, FieldHi); 1177c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (Lo == Memory || Hi == Memory) 1178c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov break; 1179c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 1180c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1181c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.2.3p2: Rule 5. Then a post merger cleanup is done: 1182c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // 1183c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // (a) If one of the classes is MEMORY, the whole argument is 1184c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // passed in memory. 1185c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // 1186c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // (b) If SSEUP is not preceeded by SSE, it is converted to SSE. 1187c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1188c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // The first of these conditions is guaranteed by how we implement 1189c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // the merge (just bail). 1190c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // 1191c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // The second condition occurs in the case of unions; for example 1192c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // union { _Complex double; unsigned; }. 1193c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (Hi == Memory) 1194c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Lo = Memory; 1195c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (Hi == SSEUp && Lo != SSE) 1196c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Hi = SSE; 1197c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 1198c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 1199c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 12009c254f0415bef9a0bafe5b5026ddb54b727597b1Chris LattnerABIArgInfo X86_64ABIInfo::getIndirectReturnResult(QualType Ty) const { 120146c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar // If this is a scalar LLVM value then assume LLVM will pass it in the right 120246c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar // place naturally. 1203d608cdb7c044365cf4e8764ade1e11e99c176078John McCall if (!isAggregateTypeForABI(Ty)) { 120446c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar // Treat an enum type as its underlying type. 120546c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar if (const EnumType *EnumTy = Ty->getAs<EnumType>()) 120646c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar Ty = EnumTy->getDecl()->getIntegerType(); 120746c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar 120846c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar return (Ty->isPromotableIntegerType() ? 120946c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar ABIArgInfo::getExtend() : ABIArgInfo::getDirect()); 121046c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar } 121146c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar 121246c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar return ABIArgInfo::getIndirect(0); 121346c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar} 121446c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar 12159c254f0415bef9a0bafe5b5026ddb54b727597b1Chris LattnerABIArgInfo X86_64ABIInfo::getIndirectResult(QualType Ty) const { 1216c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // If this is a scalar LLVM value then assume LLVM will pass it in the right 1217c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // place naturally. 1218d608cdb7c044365cf4e8764ade1e11e99c176078John McCall if (!isAggregateTypeForABI(Ty)) { 1219aa74a1e49f7c4b89539830290f76fe2c3e97187fDouglas Gregor // Treat an enum type as its underlying type. 1220aa74a1e49f7c4b89539830290f76fe2c3e97187fDouglas Gregor if (const EnumType *EnumTy = Ty->getAs<EnumType>()) 1221aa74a1e49f7c4b89539830290f76fe2c3e97187fDouglas Gregor Ty = EnumTy->getDecl()->getIntegerType(); 1222aa74a1e49f7c4b89539830290f76fe2c3e97187fDouglas Gregor 1223cc6fa88666ca2f287df4a600eb31a4087bab9c13Anton Korobeynikov return (Ty->isPromotableIntegerType() ? 1224cc6fa88666ca2f287df4a600eb31a4087bab9c13Anton Korobeynikov ABIArgInfo::getExtend() : ABIArgInfo::getDirect()); 1225aa74a1e49f7c4b89539830290f76fe2c3e97187fDouglas Gregor } 1226c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 122746c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar if (isRecordWithNonTrivialDestructorOrCopyConstructor(Ty)) 122846c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar return ABIArgInfo::getIndirect(0, /*ByVal=*/false); 12290a8f847e97f40cce51dc69051b964732333dc028Anders Carlsson 123046c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar // Compute the byval alignment. We trust the back-end to honor the 123146c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar // minimum ABI alignment for byval, to make cleaner IR. 123246c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar const unsigned MinABIAlign = 8; 1233ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner unsigned Align = getContext().getTypeAlign(Ty) / 8; 123446c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar if (Align > MinABIAlign) 123546c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar return ABIArgInfo::getIndirect(Align); 123646c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar return ABIArgInfo::getIndirect(0); 1237c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 1238c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 12390f408f5242522cbede304472e17931357c1b573dChris Lattner/// Get16ByteVectorType - The ABI specifies that a value should be passed in an 12400f408f5242522cbede304472e17931357c1b573dChris Lattner/// full vector XMM register. Pick an LLVM IR type that will be passed as a 12410f408f5242522cbede304472e17931357c1b573dChris Lattner/// vector register. 12420f408f5242522cbede304472e17931357c1b573dChris Lattnerconst llvm::Type *X86_64ABIInfo::Get16ByteVectorType(QualType Ty) const { 124315842bd05bd6d3b7450385ac8f73aaee5f807e19Chris Lattner const llvm::Type *IRType = CGT.ConvertTypeRecursive(Ty); 12448bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 124515842bd05bd6d3b7450385ac8f73aaee5f807e19Chris Lattner // Wrapper structs that just contain vectors are passed just like vectors, 124615842bd05bd6d3b7450385ac8f73aaee5f807e19Chris Lattner // strip them off if present. 124715842bd05bd6d3b7450385ac8f73aaee5f807e19Chris Lattner const llvm::StructType *STy = dyn_cast<llvm::StructType>(IRType); 124815842bd05bd6d3b7450385ac8f73aaee5f807e19Chris Lattner while (STy && STy->getNumElements() == 1) { 124915842bd05bd6d3b7450385ac8f73aaee5f807e19Chris Lattner IRType = STy->getElementType(0); 125015842bd05bd6d3b7450385ac8f73aaee5f807e19Chris Lattner STy = dyn_cast<llvm::StructType>(IRType); 125115842bd05bd6d3b7450385ac8f73aaee5f807e19Chris Lattner } 12528bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 12530f408f5242522cbede304472e17931357c1b573dChris Lattner // If the preferred type is a 16-byte vector, prefer to pass it. 125415842bd05bd6d3b7450385ac8f73aaee5f807e19Chris Lattner if (const llvm::VectorType *VT = dyn_cast<llvm::VectorType>(IRType)){ 12550f408f5242522cbede304472e17931357c1b573dChris Lattner const llvm::Type *EltTy = VT->getElementType(); 12560f408f5242522cbede304472e17931357c1b573dChris Lattner if (VT->getBitWidth() == 128 && 12570f408f5242522cbede304472e17931357c1b573dChris Lattner (EltTy->isFloatTy() || EltTy->isDoubleTy() || 12580f408f5242522cbede304472e17931357c1b573dChris Lattner EltTy->isIntegerTy(8) || EltTy->isIntegerTy(16) || 12590f408f5242522cbede304472e17931357c1b573dChris Lattner EltTy->isIntegerTy(32) || EltTy->isIntegerTy(64) || 12600f408f5242522cbede304472e17931357c1b573dChris Lattner EltTy->isIntegerTy(128))) 12610f408f5242522cbede304472e17931357c1b573dChris Lattner return VT; 12620f408f5242522cbede304472e17931357c1b573dChris Lattner } 12638bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 12640f408f5242522cbede304472e17931357c1b573dChris Lattner return llvm::VectorType::get(llvm::Type::getDoubleTy(getVMContext()), 2); 12650f408f5242522cbede304472e17931357c1b573dChris Lattner} 12660f408f5242522cbede304472e17931357c1b573dChris Lattner 1267e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner/// BitsContainNoUserData - Return true if the specified [start,end) bit range 1268e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner/// is known to either be off the end of the specified type or being in 1269e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner/// alignment padding. The user type specified is known to be at most 128 bits 1270e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner/// in size, and have passed through X86_64ABIInfo::classify with a successful 1271e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner/// classification that put one of the two halves in the INTEGER class. 1272e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner/// 1273e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner/// It is conservatively correct to return false. 1274e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattnerstatic bool BitsContainNoUserData(QualType Ty, unsigned StartBit, 1275e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner unsigned EndBit, ASTContext &Context) { 1276e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner // If the bytes being queried are off the end of the type, there is no user 1277e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner // data hiding here. This handles analysis of builtins, vectors and other 1278e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner // types that don't contain interesting padding. 1279e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner unsigned TySize = (unsigned)Context.getTypeSize(Ty); 1280e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner if (TySize <= StartBit) 1281e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner return true; 1282e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner 1283021c3a349d4f55cc2c7970268758bcf37b924493Chris Lattner if (const ConstantArrayType *AT = Context.getAsConstantArrayType(Ty)) { 1284021c3a349d4f55cc2c7970268758bcf37b924493Chris Lattner unsigned EltSize = (unsigned)Context.getTypeSize(AT->getElementType()); 1285021c3a349d4f55cc2c7970268758bcf37b924493Chris Lattner unsigned NumElts = (unsigned)AT->getSize().getZExtValue(); 1286021c3a349d4f55cc2c7970268758bcf37b924493Chris Lattner 1287021c3a349d4f55cc2c7970268758bcf37b924493Chris Lattner // Check each element to see if the element overlaps with the queried range. 1288021c3a349d4f55cc2c7970268758bcf37b924493Chris Lattner for (unsigned i = 0; i != NumElts; ++i) { 1289021c3a349d4f55cc2c7970268758bcf37b924493Chris Lattner // If the element is after the span we care about, then we're done.. 1290021c3a349d4f55cc2c7970268758bcf37b924493Chris Lattner unsigned EltOffset = i*EltSize; 1291021c3a349d4f55cc2c7970268758bcf37b924493Chris Lattner if (EltOffset >= EndBit) break; 12928bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1293021c3a349d4f55cc2c7970268758bcf37b924493Chris Lattner unsigned EltStart = EltOffset < StartBit ? StartBit-EltOffset :0; 1294021c3a349d4f55cc2c7970268758bcf37b924493Chris Lattner if (!BitsContainNoUserData(AT->getElementType(), EltStart, 1295021c3a349d4f55cc2c7970268758bcf37b924493Chris Lattner EndBit-EltOffset, Context)) 1296021c3a349d4f55cc2c7970268758bcf37b924493Chris Lattner return false; 1297021c3a349d4f55cc2c7970268758bcf37b924493Chris Lattner } 1298021c3a349d4f55cc2c7970268758bcf37b924493Chris Lattner // If it overlaps no elements, then it is safe to process as padding. 1299021c3a349d4f55cc2c7970268758bcf37b924493Chris Lattner return true; 1300021c3a349d4f55cc2c7970268758bcf37b924493Chris Lattner } 13018bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1302e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner if (const RecordType *RT = Ty->getAs<RecordType>()) { 1303e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner const RecordDecl *RD = RT->getDecl(); 1304e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner const ASTRecordLayout &Layout = Context.getASTRecordLayout(RD); 13058bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1306e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner // If this is a C++ record, check the bases first. 1307e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner if (const CXXRecordDecl *CXXRD = dyn_cast<CXXRecordDecl>(RD)) { 1308e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner for (CXXRecordDecl::base_class_const_iterator i = CXXRD->bases_begin(), 1309e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner e = CXXRD->bases_end(); i != e; ++i) { 1310e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner assert(!i->isVirtual() && !i->getType()->isDependentType() && 1311e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner "Unexpected base class!"); 1312e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner const CXXRecordDecl *Base = 1313e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner cast<CXXRecordDecl>(i->getType()->getAs<RecordType>()->getDecl()); 13148bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1315e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner // If the base is after the span we care about, ignore it. 1316e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner unsigned BaseOffset = (unsigned)Layout.getBaseClassOffset(Base); 1317e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner if (BaseOffset >= EndBit) continue; 13188bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1319e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner unsigned BaseStart = BaseOffset < StartBit ? StartBit-BaseOffset :0; 1320e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner if (!BitsContainNoUserData(i->getType(), BaseStart, 1321e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner EndBit-BaseOffset, Context)) 1322e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner return false; 1323e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner } 1324e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner } 13258bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1326e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner // Verify that no field has data that overlaps the region of interest. Yes 1327e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner // this could be sped up a lot by being smarter about queried fields, 1328e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner // however we're only looking at structs up to 16 bytes, so we don't care 1329e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner // much. 1330e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner unsigned idx = 0; 1331e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner for (RecordDecl::field_iterator i = RD->field_begin(), e = RD->field_end(); 1332e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner i != e; ++i, ++idx) { 1333e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner unsigned FieldOffset = (unsigned)Layout.getFieldOffset(idx); 13348bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1335e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner // If we found a field after the region we care about, then we're done. 1336e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner if (FieldOffset >= EndBit) break; 1337e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner 1338e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner unsigned FieldStart = FieldOffset < StartBit ? StartBit-FieldOffset :0; 1339e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner if (!BitsContainNoUserData(i->getType(), FieldStart, EndBit-FieldOffset, 1340e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner Context)) 1341e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner return false; 1342e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner } 13438bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1344e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner // If nothing in this record overlapped the area of interest, then we're 1345e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner // clean. 1346e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner return true; 1347e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner } 13488bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1349e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner return false; 1350e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner} 1351e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner 13520b3620066bfbb33004bed1816c851a923b9301afChris Lattner/// ContainsFloatAtOffset - Return true if the specified LLVM IR type has a 13530b3620066bfbb33004bed1816c851a923b9301afChris Lattner/// float member at the specified offset. For example, {int,{float}} has a 13540b3620066bfbb33004bed1816c851a923b9301afChris Lattner/// float at offset 4. It is conservatively correct for this routine to return 13550b3620066bfbb33004bed1816c851a923b9301afChris Lattner/// false. 13560b3620066bfbb33004bed1816c851a923b9301afChris Lattnerstatic bool ContainsFloatAtOffset(const llvm::Type *IRType, unsigned IROffset, 13570b3620066bfbb33004bed1816c851a923b9301afChris Lattner const llvm::TargetData &TD) { 13580b3620066bfbb33004bed1816c851a923b9301afChris Lattner // Base case if we find a float. 13590b3620066bfbb33004bed1816c851a923b9301afChris Lattner if (IROffset == 0 && IRType->isFloatTy()) 13600b3620066bfbb33004bed1816c851a923b9301afChris Lattner return true; 13618bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 13620b3620066bfbb33004bed1816c851a923b9301afChris Lattner // If this is a struct, recurse into the field at the specified offset. 13630b3620066bfbb33004bed1816c851a923b9301afChris Lattner if (const llvm::StructType *STy = dyn_cast<llvm::StructType>(IRType)) { 13640b3620066bfbb33004bed1816c851a923b9301afChris Lattner const llvm::StructLayout *SL = TD.getStructLayout(STy); 13650b3620066bfbb33004bed1816c851a923b9301afChris Lattner unsigned Elt = SL->getElementContainingOffset(IROffset); 13660b3620066bfbb33004bed1816c851a923b9301afChris Lattner IROffset -= SL->getElementOffset(Elt); 13670b3620066bfbb33004bed1816c851a923b9301afChris Lattner return ContainsFloatAtOffset(STy->getElementType(Elt), IROffset, TD); 13680b3620066bfbb33004bed1816c851a923b9301afChris Lattner } 13698bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 13700b3620066bfbb33004bed1816c851a923b9301afChris Lattner // If this is an array, recurse into the field at the specified offset. 13710b3620066bfbb33004bed1816c851a923b9301afChris Lattner if (const llvm::ArrayType *ATy = dyn_cast<llvm::ArrayType>(IRType)) { 13720b3620066bfbb33004bed1816c851a923b9301afChris Lattner const llvm::Type *EltTy = ATy->getElementType(); 13730b3620066bfbb33004bed1816c851a923b9301afChris Lattner unsigned EltSize = TD.getTypeAllocSize(EltTy); 13740b3620066bfbb33004bed1816c851a923b9301afChris Lattner IROffset -= IROffset/EltSize*EltSize; 13750b3620066bfbb33004bed1816c851a923b9301afChris Lattner return ContainsFloatAtOffset(EltTy, IROffset, TD); 13760b3620066bfbb33004bed1816c851a923b9301afChris Lattner } 13770b3620066bfbb33004bed1816c851a923b9301afChris Lattner 13780b3620066bfbb33004bed1816c851a923b9301afChris Lattner return false; 13790b3620066bfbb33004bed1816c851a923b9301afChris Lattner} 13800b3620066bfbb33004bed1816c851a923b9301afChris Lattner 1381f47c944b5710a545d564b4d4b641a2f8bac96af3Chris Lattner 1382f47c944b5710a545d564b4d4b641a2f8bac96af3Chris Lattner/// GetSSETypeAtOffset - Return a type that will be passed by the backend in the 1383f47c944b5710a545d564b4d4b641a2f8bac96af3Chris Lattner/// low 8 bytes of an XMM register, corresponding to the SSE class. 1384f47c944b5710a545d564b4d4b641a2f8bac96af3Chris Lattnerconst llvm::Type *X86_64ABIInfo:: 1385f47c944b5710a545d564b4d4b641a2f8bac96af3Chris LattnerGetSSETypeAtOffset(const llvm::Type *IRType, unsigned IROffset, 1386f47c944b5710a545d564b4d4b641a2f8bac96af3Chris Lattner QualType SourceTy, unsigned SourceOffset) const { 1387cba8d310163f84630fd140fbfa9b6fdad9d26587Chris Lattner // The only three choices we have are either double, <2 x float>, or float. We 1388f47c944b5710a545d564b4d4b641a2f8bac96af3Chris Lattner // pass as float if the last 4 bytes is just padding. This happens for 1389f47c944b5710a545d564b4d4b641a2f8bac96af3Chris Lattner // structs that contain 3 floats. 1390f47c944b5710a545d564b4d4b641a2f8bac96af3Chris Lattner if (BitsContainNoUserData(SourceTy, SourceOffset*8+32, 1391f47c944b5710a545d564b4d4b641a2f8bac96af3Chris Lattner SourceOffset*8+64, getContext())) 1392f47c944b5710a545d564b4d4b641a2f8bac96af3Chris Lattner return llvm::Type::getFloatTy(getVMContext()); 13938bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 13940b3620066bfbb33004bed1816c851a923b9301afChris Lattner // We want to pass as <2 x float> if the LLVM IR type contains a float at 13950b3620066bfbb33004bed1816c851a923b9301afChris Lattner // offset+0 and offset+4. Walk the LLVM IR type to find out if this is the 13960b3620066bfbb33004bed1816c851a923b9301afChris Lattner // case. 13970b3620066bfbb33004bed1816c851a923b9301afChris Lattner if (ContainsFloatAtOffset(IRType, IROffset, getTargetData()) && 139822fd4baf2eba2103e2b41e463f1a5f6486c398fbChris Lattner ContainsFloatAtOffset(IRType, IROffset+4, getTargetData())) 139922fd4baf2eba2103e2b41e463f1a5f6486c398fbChris Lattner return llvm::VectorType::get(llvm::Type::getFloatTy(getVMContext()), 2); 14008bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1401f47c944b5710a545d564b4d4b641a2f8bac96af3Chris Lattner return llvm::Type::getDoubleTy(getVMContext()); 1402f47c944b5710a545d564b4d4b641a2f8bac96af3Chris Lattner} 1403f47c944b5710a545d564b4d4b641a2f8bac96af3Chris Lattner 1404f47c944b5710a545d564b4d4b641a2f8bac96af3Chris Lattner 14050d2656d77053cc2ed6f3a3acdf12d67807c7f3a2Chris Lattner/// GetINTEGERTypeAtOffset - The ABI specifies that a value should be passed in 14060d2656d77053cc2ed6f3a3acdf12d67807c7f3a2Chris Lattner/// an 8-byte GPR. This means that we either have a scalar or we are talking 14070d2656d77053cc2ed6f3a3acdf12d67807c7f3a2Chris Lattner/// about the high or low part of an up-to-16-byte struct. This routine picks 14080d2656d77053cc2ed6f3a3acdf12d67807c7f3a2Chris Lattner/// the best LLVM IR type to represent this, which may be i64 or may be anything 1409519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner/// else that the backend will pass in a GPR that works better (e.g. i8, %foo*, 1410519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner/// etc). 1411519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner/// 1412519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner/// PrefType is an LLVM IR type that corresponds to (part of) the IR type for 1413519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner/// the source type. IROffset is an offset in bytes into the LLVM IR type that 1414519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner/// the 8-byte value references. PrefType may be null. 1415519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner/// 1416519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner/// SourceTy is the source level type for the entire argument. SourceOffset is 1417519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner/// an offset into this that we're processing (which is always either 0 or 8). 1418519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner/// 141944f0fd2804e9952a8dbf85bb60ee3501aa9f5ee7Chris Lattnerconst llvm::Type *X86_64ABIInfo:: 14200d2656d77053cc2ed6f3a3acdf12d67807c7f3a2Chris LattnerGetINTEGERTypeAtOffset(const llvm::Type *IRType, unsigned IROffset, 14210d2656d77053cc2ed6f3a3acdf12d67807c7f3a2Chris Lattner QualType SourceTy, unsigned SourceOffset) const { 1422e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner // If we're dealing with an un-offset LLVM IR type, then it means that we're 1423e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner // returning an 8-byte unit starting with it. See if we can safely use it. 1424e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner if (IROffset == 0) { 1425e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner // Pointers and int64's always fill the 8-byte unit. 1426e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner if (isa<llvm::PointerType>(IRType) || IRType->isIntegerTy(64)) 1427e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner return IRType; 1428e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner 1429e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner // If we have a 1/2/4-byte integer, we can use it only if the rest of the 1430e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner // goodness in the source type is just tail padding. This is allowed to 1431e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner // kick in for struct {double,int} on the int, but not on 1432e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner // struct{double,int,int} because we wouldn't return the second int. We 1433e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner // have to do this analysis on the source type because we can't depend on 1434e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner // unions being lowered a specific way etc. 1435e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner if (IRType->isIntegerTy(8) || IRType->isIntegerTy(16) || 1436e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner IRType->isIntegerTy(32)) { 1437e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner unsigned BitWidth = cast<llvm::IntegerType>(IRType)->getBitWidth(); 14388bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1439e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner if (BitsContainNoUserData(SourceTy, SourceOffset*8+BitWidth, 1440e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner SourceOffset*8+64, getContext())) 1441e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner return IRType; 1442e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner } 1443e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner } 1444519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner 1445fe12d1ee8be8b8023c0c60b299ae957ea0df5d21Chris Lattner if (const llvm::StructType *STy = dyn_cast<llvm::StructType>(IRType)) { 1446519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner // If this is a struct, recurse into the field at the specified offset. 144744f0fd2804e9952a8dbf85bb60ee3501aa9f5ee7Chris Lattner const llvm::StructLayout *SL = getTargetData().getStructLayout(STy); 1448519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner if (IROffset < SL->getSizeInBytes()) { 1449519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner unsigned FieldIdx = SL->getElementContainingOffset(IROffset); 1450519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner IROffset -= SL->getElementOffset(FieldIdx); 14518bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 14520d2656d77053cc2ed6f3a3acdf12d67807c7f3a2Chris Lattner return GetINTEGERTypeAtOffset(STy->getElementType(FieldIdx), IROffset, 14530d2656d77053cc2ed6f3a3acdf12d67807c7f3a2Chris Lattner SourceTy, SourceOffset); 14548bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer } 1455519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner } 14568bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1457021c3a349d4f55cc2c7970268758bcf37b924493Chris Lattner if (const llvm::ArrayType *ATy = dyn_cast<llvm::ArrayType>(IRType)) { 1458021c3a349d4f55cc2c7970268758bcf37b924493Chris Lattner const llvm::Type *EltTy = ATy->getElementType(); 1459021c3a349d4f55cc2c7970268758bcf37b924493Chris Lattner unsigned EltSize = getTargetData().getTypeAllocSize(EltTy); 1460021c3a349d4f55cc2c7970268758bcf37b924493Chris Lattner unsigned EltOffset = IROffset/EltSize*EltSize; 14610d2656d77053cc2ed6f3a3acdf12d67807c7f3a2Chris Lattner return GetINTEGERTypeAtOffset(EltTy, IROffset-EltOffset, SourceTy, 14620d2656d77053cc2ed6f3a3acdf12d67807c7f3a2Chris Lattner SourceOffset); 1463021c3a349d4f55cc2c7970268758bcf37b924493Chris Lattner } 14648bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1465519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner // Okay, we don't have any better idea of what to pass, so we pass this in an 1466519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner // integer register that isn't too big to fit the rest of the struct. 14679e45a3de3f462785a86bba77dee168ab354d9704Chris Lattner unsigned TySizeInBytes = 14689e45a3de3f462785a86bba77dee168ab354d9704Chris Lattner (unsigned)getContext().getTypeSizeInChars(SourceTy).getQuantity(); 1469519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner 14709e45a3de3f462785a86bba77dee168ab354d9704Chris Lattner assert(TySizeInBytes != SourceOffset && "Empty field?"); 14718bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1472519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner // It is always safe to classify this as an integer type up to i64 that 1473519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner // isn't larger than the structure. 14749e45a3de3f462785a86bba77dee168ab354d9704Chris Lattner return llvm::IntegerType::get(getVMContext(), 14759e45a3de3f462785a86bba77dee168ab354d9704Chris Lattner std::min(TySizeInBytes-SourceOffset, 8U)*8); 1476519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner} 1477519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner 147866e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattner 147966e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattner/// GetX86_64ByValArgumentPair - Given a high and low type that can ideally 148066e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattner/// be used as elements of a two register pair to pass or return, return a 148166e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattner/// first class aggregate to represent them. For example, if the low part of 148266e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattner/// a by-value argument should be passed as i32* and the high part as float, 148366e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattner/// return {i32*, float}. 148466e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattnerstatic const llvm::Type * 148566e7b68b0016aeebe349e21ace93ff0178665d69Chris LattnerGetX86_64ByValArgumentPair(const llvm::Type *Lo, const llvm::Type *Hi, 148666e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattner const llvm::TargetData &TD) { 148766e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattner // In order to correctly satisfy the ABI, we need to the high part to start 148866e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattner // at offset 8. If the high and low parts we inferred are both 4-byte types 148966e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattner // (e.g. i32 and i32) then the resultant struct type ({i32,i32}) won't have 149066e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattner // the second element at offset 8. Check for this: 149166e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattner unsigned LoSize = (unsigned)TD.getTypeAllocSize(Lo); 149266e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattner unsigned HiAlign = TD.getABITypeAlignment(Hi); 149366e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattner unsigned HiStart = llvm::TargetData::RoundUpAlignment(LoSize, HiAlign); 149466e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattner assert(HiStart != 0 && HiStart <= 8 && "Invalid x86-64 argument pair!"); 149566e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattner 149666e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattner // To handle this, we have to increase the size of the low part so that the 149766e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattner // second element will start at an 8 byte offset. We can't increase the size 149866e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattner // of the second element because it might make us access off the end of the 149966e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattner // struct. 150066e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattner if (HiStart != 8) { 150166e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattner // There are only two sorts of types the ABI generation code can produce for 150266e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattner // the low part of a pair that aren't 8 bytes in size: float or i8/i16/i32. 150366e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattner // Promote these to a larger type. 150466e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattner if (Lo->isFloatTy()) 150566e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattner Lo = llvm::Type::getDoubleTy(Lo->getContext()); 150666e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattner else { 150766e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattner assert(Lo->isIntegerTy() && "Invalid/unknown lo type"); 150866e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattner Lo = llvm::Type::getInt64Ty(Lo->getContext()); 150966e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattner } 151066e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattner } 151166e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattner 151266e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattner const llvm::StructType *Result = 151366e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattner llvm::StructType::get(Lo->getContext(), Lo, Hi, NULL); 151466e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattner 151566e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattner 151666e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattner // Verify that the second element is at an 8-byte offset. 151766e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattner assert(TD.getStructLayout(Result)->getElementOffset(1) == 8 && 151866e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattner "Invalid x86-64 argument pair!"); 151966e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattner return Result; 152066e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattner} 152166e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattner 15221090a9ba0902380dbd97d0a500daa4c373712df9Chris LattnerABIArgInfo X86_64ABIInfo:: 1523a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris LattnerclassifyReturnType(QualType RetTy) const { 1524c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.2.3p4: Rule 1. Classify the return type with the 1525c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // classification algorithm. 1526c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov X86_64ABIInfo::Class Lo, Hi; 15279c254f0415bef9a0bafe5b5026ddb54b727597b1Chris Lattner classify(RetTy, 0, Lo, Hi); 1528c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1529c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Check some invariants. 1530c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov assert((Hi != Memory || Lo == Memory) && "Invalid memory classification."); 1531c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov assert((Hi != SSEUp || Lo == SSE) && "Invalid SSEUp classification."); 1532c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1533c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov const llvm::Type *ResType = 0; 1534c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov switch (Lo) { 1535c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case NoClass: 1536117e3f4cd4d6ea41c3202da8729f94168c5c8239Chris Lattner if (Hi == NoClass) 1537117e3f4cd4d6ea41c3202da8729f94168c5c8239Chris Lattner return ABIArgInfo::getIgnore(); 1538117e3f4cd4d6ea41c3202da8729f94168c5c8239Chris Lattner // If the low part is just padding, it takes no register, leave ResType 1539117e3f4cd4d6ea41c3202da8729f94168c5c8239Chris Lattner // null. 1540117e3f4cd4d6ea41c3202da8729f94168c5c8239Chris Lattner assert((Hi == SSE || Hi == Integer || Hi == X87Up) && 1541117e3f4cd4d6ea41c3202da8729f94168c5c8239Chris Lattner "Unknown missing lo part"); 1542117e3f4cd4d6ea41c3202da8729f94168c5c8239Chris Lattner break; 1543c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1544c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case SSEUp: 1545c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case X87Up: 1546c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov assert(0 && "Invalid classification for lo word."); 1547c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1548c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.2.3p4: Rule 2. Types of class memory are returned via 1549c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // hidden argument. 1550c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case Memory: 15519c254f0415bef9a0bafe5b5026ddb54b727597b1Chris Lattner return getIndirectReturnResult(RetTy); 1552c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1553c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.2.3p4: Rule 3. If the class is INTEGER, the next 1554c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // available register of the sequence %rax, %rdx is used. 1555c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case Integer: 15560d2656d77053cc2ed6f3a3acdf12d67807c7f3a2Chris Lattner ResType = GetINTEGERTypeAtOffset(CGT.ConvertTypeRecursive(RetTy), 0, 15570d2656d77053cc2ed6f3a3acdf12d67807c7f3a2Chris Lattner RetTy, 0); 15588bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1559eb518b4b89e4134b21975530809697142f69b779Chris Lattner // If we have a sign or zero extended integer, make sure to return Extend 1560eb518b4b89e4134b21975530809697142f69b779Chris Lattner // so that the parameter gets the right LLVM IR attributes. 1561eb518b4b89e4134b21975530809697142f69b779Chris Lattner if (Hi == NoClass && isa<llvm::IntegerType>(ResType)) { 1562eb518b4b89e4134b21975530809697142f69b779Chris Lattner // Treat an enum type as its underlying type. 1563eb518b4b89e4134b21975530809697142f69b779Chris Lattner if (const EnumType *EnumTy = RetTy->getAs<EnumType>()) 1564eb518b4b89e4134b21975530809697142f69b779Chris Lattner RetTy = EnumTy->getDecl()->getIntegerType(); 15658bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1566eb518b4b89e4134b21975530809697142f69b779Chris Lattner if (RetTy->isIntegralOrEnumerationType() && 1567eb518b4b89e4134b21975530809697142f69b779Chris Lattner RetTy->isPromotableIntegerType()) 1568eb518b4b89e4134b21975530809697142f69b779Chris Lattner return ABIArgInfo::getExtend(); 1569eb518b4b89e4134b21975530809697142f69b779Chris Lattner } 1570519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner break; 1571c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1572c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.2.3p4: Rule 4. If the class is SSE, the next 1573c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // available SSE register of the sequence %xmm0, %xmm1 is used. 1574c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case SSE: 1575f47c944b5710a545d564b4d4b641a2f8bac96af3Chris Lattner ResType = GetSSETypeAtOffset(CGT.ConvertTypeRecursive(RetTy), 0, RetTy, 0); 15760b30c67132f00c667512a65cfe1fe81ae54c2383Chris Lattner break; 1577c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1578c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.2.3p4: Rule 6. If the class is X87, the value is 1579c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // returned on the X87 stack in %st0 as 80-bit x87 number. 1580c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case X87: 1581ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner ResType = llvm::Type::getX86_FP80Ty(getVMContext()); 15820b30c67132f00c667512a65cfe1fe81ae54c2383Chris Lattner break; 1583c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1584c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.2.3p4: Rule 8. If the class is COMPLEX_X87, the real 1585c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // part of the value is returned in %st0 and the imaginary part in 1586c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // %st1. 1587c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case ComplexX87: 1588c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov assert(Hi == ComplexX87 && "Unexpected ComplexX87 classification."); 1589a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner ResType = llvm::StructType::get(getVMContext(), 1590ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner llvm::Type::getX86_FP80Ty(getVMContext()), 1591ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner llvm::Type::getX86_FP80Ty(getVMContext()), 1592c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov NULL); 1593c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov break; 1594c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 1595c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 15963db4dde12de84269c8f803f9dfca37a2d14f9898Chris Lattner const llvm::Type *HighPart = 0; 1597c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov switch (Hi) { 1598c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Memory was handled previously and X87 should 1599c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // never occur as a hi class. 1600c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case Memory: 1601c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case X87: 1602c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov assert(0 && "Invalid classification for hi word."); 1603c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1604c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case ComplexX87: // Previously handled. 16050b30c67132f00c667512a65cfe1fe81ae54c2383Chris Lattner case NoClass: 16060b30c67132f00c667512a65cfe1fe81ae54c2383Chris Lattner break; 1607c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 16083db4dde12de84269c8f803f9dfca37a2d14f9898Chris Lattner case Integer: 16093db4dde12de84269c8f803f9dfca37a2d14f9898Chris Lattner HighPart = GetINTEGERTypeAtOffset(CGT.ConvertTypeRecursive(RetTy), 16103db4dde12de84269c8f803f9dfca37a2d14f9898Chris Lattner 8, RetTy, 8); 16113db4dde12de84269c8f803f9dfca37a2d14f9898Chris Lattner if (Lo == NoClass) // Return HighPart at offset 8 in memory. 16123db4dde12de84269c8f803f9dfca37a2d14f9898Chris Lattner return ABIArgInfo::getDirect(HighPart, 8); 1613c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov break; 16143db4dde12de84269c8f803f9dfca37a2d14f9898Chris Lattner case SSE: 16153db4dde12de84269c8f803f9dfca37a2d14f9898Chris Lattner HighPart = GetSSETypeAtOffset(CGT.ConvertTypeRecursive(RetTy), 8, RetTy, 8); 16163db4dde12de84269c8f803f9dfca37a2d14f9898Chris Lattner if (Lo == NoClass) // Return HighPart at offset 8 in memory. 16173db4dde12de84269c8f803f9dfca37a2d14f9898Chris Lattner return ABIArgInfo::getDirect(HighPart, 8); 1618c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov break; 1619c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1620c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.2.3p4: Rule 5. If the class is SSEUP, the eightbyte 1621c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // is passed in the upper half of the last used SSE register. 1622c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // 1623c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // SSEUP should always be preceeded by SSE, just widen. 1624c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case SSEUp: 1625c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov assert(Lo == SSE && "Unexpected SSEUp classification."); 16260f408f5242522cbede304472e17931357c1b573dChris Lattner ResType = Get16ByteVectorType(RetTy); 1627c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov break; 1628c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1629c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.2.3p4: Rule 7. If the class is X87UP, the value is 1630c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // returned together with the previous X87 value in %st0. 1631c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case X87Up: 1632c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // If X87Up is preceeded by X87, we don't need to do 1633c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // anything. However, in some cases with unions it may not be 1634c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // preceeded by X87. In such situations we follow gcc and pass the 1635c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // extra bits in an SSE reg. 1636603519d269d48dca99927f0ad65e92099bd76161Chris Lattner if (Lo != X87) { 16373db4dde12de84269c8f803f9dfca37a2d14f9898Chris Lattner HighPart = GetSSETypeAtOffset(CGT.ConvertTypeRecursive(RetTy), 16383db4dde12de84269c8f803f9dfca37a2d14f9898Chris Lattner 8, RetTy, 8); 16393db4dde12de84269c8f803f9dfca37a2d14f9898Chris Lattner if (Lo == NoClass) // Return HighPart at offset 8 in memory. 16403db4dde12de84269c8f803f9dfca37a2d14f9898Chris Lattner return ABIArgInfo::getDirect(HighPart, 8); 1641603519d269d48dca99927f0ad65e92099bd76161Chris Lattner } 1642c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov break; 1643c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 16443db4dde12de84269c8f803f9dfca37a2d14f9898Chris Lattner 16453db4dde12de84269c8f803f9dfca37a2d14f9898Chris Lattner // If a high part was specified, merge it together with the low part. It is 1646645406a3d3405ad0f4b5a0e46a34ae92d9d23bd3Chris Lattner // known to pass in the high eightbyte of the result. We do this by forming a 1647645406a3d3405ad0f4b5a0e46a34ae92d9d23bd3Chris Lattner // first class struct aggregate with the high and low part: {low, high} 164866e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattner if (HighPart) 164966e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattner ResType = GetX86_64ByValArgumentPair(ResType, HighPart, getTargetData()); 1650c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1651eb518b4b89e4134b21975530809697142f69b779Chris Lattner return ABIArgInfo::getDirect(ResType); 16529c254f0415bef9a0bafe5b5026ddb54b727597b1Chris Lattner} 16539c254f0415bef9a0bafe5b5026ddb54b727597b1Chris Lattner 1654a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris LattnerABIArgInfo X86_64ABIInfo::classifyArgumentType(QualType Ty, unsigned &neededInt, 16555868ca2eb7f00d815f62e46f5a171eb6e5f91b5bChris Lattner unsigned &neededSSE) const { 1656c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov X86_64ABIInfo::Class Lo, Hi; 16579c254f0415bef9a0bafe5b5026ddb54b727597b1Chris Lattner classify(Ty, 0, Lo, Hi); 16588bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1659c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Check some invariants. 1660c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // FIXME: Enforce these by construction. 1661c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov assert((Hi != Memory || Lo == Memory) && "Invalid memory classification."); 1662c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov assert((Hi != SSEUp || Lo == SSE) && "Invalid SSEUp classification."); 1663c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1664c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov neededInt = 0; 1665c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov neededSSE = 0; 1666c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov const llvm::Type *ResType = 0; 1667c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov switch (Lo) { 1668c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case NoClass: 1669117e3f4cd4d6ea41c3202da8729f94168c5c8239Chris Lattner if (Hi == NoClass) 1670117e3f4cd4d6ea41c3202da8729f94168c5c8239Chris Lattner return ABIArgInfo::getIgnore(); 1671117e3f4cd4d6ea41c3202da8729f94168c5c8239Chris Lattner // If the low part is just padding, it takes no register, leave ResType 1672117e3f4cd4d6ea41c3202da8729f94168c5c8239Chris Lattner // null. 1673117e3f4cd4d6ea41c3202da8729f94168c5c8239Chris Lattner assert((Hi == SSE || Hi == Integer || Hi == X87Up) && 1674117e3f4cd4d6ea41c3202da8729f94168c5c8239Chris Lattner "Unknown missing lo part"); 1675117e3f4cd4d6ea41c3202da8729f94168c5c8239Chris Lattner break; 16768bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1677c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.2.3p3: Rule 1. If the class is MEMORY, pass the argument 1678c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // on the stack. 1679c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case Memory: 1680c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1681c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.2.3p3: Rule 5. If the class is X87, X87UP or 1682c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // COMPLEX_X87, it is passed in memory. 1683c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case X87: 1684c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case ComplexX87: 16859c254f0415bef9a0bafe5b5026ddb54b727597b1Chris Lattner return getIndirectResult(Ty); 1686c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1687c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case SSEUp: 1688c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case X87Up: 1689c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov assert(0 && "Invalid classification for lo word."); 1690c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1691c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.2.3p3: Rule 2. If the class is INTEGER, the next 1692c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // available register of the sequence %rdi, %rsi, %rdx, %rcx, %r8 1693c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // and %r9 is used. 1694c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case Integer: 16959c254f0415bef9a0bafe5b5026ddb54b727597b1Chris Lattner ++neededInt; 16968bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 169749382de42c2a411bfd772408e987cb399071241dChris Lattner // Pick an 8-byte type based on the preferred type. 16980d2656d77053cc2ed6f3a3acdf12d67807c7f3a2Chris Lattner ResType = GetINTEGERTypeAtOffset(CGT.ConvertTypeRecursive(Ty), 0, Ty, 0); 1699eb518b4b89e4134b21975530809697142f69b779Chris Lattner 1700eb518b4b89e4134b21975530809697142f69b779Chris Lattner // If we have a sign or zero extended integer, make sure to return Extend 1701eb518b4b89e4134b21975530809697142f69b779Chris Lattner // so that the parameter gets the right LLVM IR attributes. 1702eb518b4b89e4134b21975530809697142f69b779Chris Lattner if (Hi == NoClass && isa<llvm::IntegerType>(ResType)) { 1703eb518b4b89e4134b21975530809697142f69b779Chris Lattner // Treat an enum type as its underlying type. 1704eb518b4b89e4134b21975530809697142f69b779Chris Lattner if (const EnumType *EnumTy = Ty->getAs<EnumType>()) 1705eb518b4b89e4134b21975530809697142f69b779Chris Lattner Ty = EnumTy->getDecl()->getIntegerType(); 17068bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1707eb518b4b89e4134b21975530809697142f69b779Chris Lattner if (Ty->isIntegralOrEnumerationType() && 1708eb518b4b89e4134b21975530809697142f69b779Chris Lattner Ty->isPromotableIntegerType()) 1709eb518b4b89e4134b21975530809697142f69b779Chris Lattner return ABIArgInfo::getExtend(); 1710eb518b4b89e4134b21975530809697142f69b779Chris Lattner } 17118bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1712c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov break; 1713c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1714c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.2.3p3: Rule 3. If the class is SSE, the next 1715c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // available SSE register is used, the registers are taken in the 1716c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // order from %xmm0 to %xmm7. 1717c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case SSE: 1718c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov ++neededSSE; 1719f47c944b5710a545d564b4d4b641a2f8bac96af3Chris Lattner ResType = GetSSETypeAtOffset(CGT.ConvertTypeRecursive(Ty), 0, Ty, 0); 1720c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov break; 1721c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 1722c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1723645406a3d3405ad0f4b5a0e46a34ae92d9d23bd3Chris Lattner const llvm::Type *HighPart = 0; 1724c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov switch (Hi) { 1725c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Memory was handled previously, ComplexX87 and X87 should 1726c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // never occur as hi classes, and X87Up must be preceed by X87, 1727c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // which is passed in memory. 1728c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case Memory: 1729c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case X87: 1730c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case ComplexX87: 1731c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov assert(0 && "Invalid classification for hi word."); 1732c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov break; 1733c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1734c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case NoClass: break; 17358bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1736645406a3d3405ad0f4b5a0e46a34ae92d9d23bd3Chris Lattner case Integer: 1737c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov ++neededInt; 173849382de42c2a411bfd772408e987cb399071241dChris Lattner // Pick an 8-byte type based on the preferred type. 1739645406a3d3405ad0f4b5a0e46a34ae92d9d23bd3Chris Lattner HighPart = GetINTEGERTypeAtOffset(CGT.ConvertTypeRecursive(Ty), 8, Ty, 8); 1740117e3f4cd4d6ea41c3202da8729f94168c5c8239Chris Lattner 1741645406a3d3405ad0f4b5a0e46a34ae92d9d23bd3Chris Lattner if (Lo == NoClass) // Pass HighPart at offset 8 in memory. 1742645406a3d3405ad0f4b5a0e46a34ae92d9d23bd3Chris Lattner return ABIArgInfo::getDirect(HighPart, 8); 1743c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov break; 1744c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1745c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // X87Up generally doesn't occur here (long double is passed in 1746c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // memory), except in situations involving unions. 1747c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case X87Up: 1748645406a3d3405ad0f4b5a0e46a34ae92d9d23bd3Chris Lattner case SSE: 1749645406a3d3405ad0f4b5a0e46a34ae92d9d23bd3Chris Lattner HighPart = GetSSETypeAtOffset(CGT.ConvertTypeRecursive(Ty), 8, Ty, 8); 17508bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1751645406a3d3405ad0f4b5a0e46a34ae92d9d23bd3Chris Lattner if (Lo == NoClass) // Pass HighPart at offset 8 in memory. 1752645406a3d3405ad0f4b5a0e46a34ae92d9d23bd3Chris Lattner return ABIArgInfo::getDirect(HighPart, 8); 1753117e3f4cd4d6ea41c3202da8729f94168c5c8239Chris Lattner 1754c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov ++neededSSE; 1755c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov break; 1756c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1757c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.2.3p3: Rule 4. If the class is SSEUP, the 1758c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // eightbyte is passed in the upper half of the last used SSE 17598bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer // register. This only happens when 128-bit vectors are passed. 1760c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case SSEUp: 1761ab5722e67794b3954c874a369086fc5f41ac46a5Chris Lattner assert(Lo == SSE && "Unexpected SSEUp classification"); 17620f408f5242522cbede304472e17931357c1b573dChris Lattner ResType = Get16ByteVectorType(Ty); 1763c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov break; 1764c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 1765c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1766645406a3d3405ad0f4b5a0e46a34ae92d9d23bd3Chris Lattner // If a high part was specified, merge it together with the low part. It is 1767645406a3d3405ad0f4b5a0e46a34ae92d9d23bd3Chris Lattner // known to pass in the high eightbyte of the result. We do this by forming a 1768645406a3d3405ad0f4b5a0e46a34ae92d9d23bd3Chris Lattner // first class struct aggregate with the high and low part: {low, high} 1769645406a3d3405ad0f4b5a0e46a34ae92d9d23bd3Chris Lattner if (HighPart) 177066e7b68b0016aeebe349e21ace93ff0178665d69Chris Lattner ResType = GetX86_64ByValArgumentPair(ResType, HighPart, getTargetData()); 1771645406a3d3405ad0f4b5a0e46a34ae92d9d23bd3Chris Lattner 1772eb518b4b89e4134b21975530809697142f69b779Chris Lattner return ABIArgInfo::getDirect(ResType); 1773c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 1774c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1775ee5dcd064a811edc90f6c1fb31a837b6c961fed7Chris Lattnervoid X86_64ABIInfo::computeInfo(CGFunctionInfo &FI) const { 17768bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1777a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner FI.getReturnInfo() = classifyReturnType(FI.getReturnType()); 1778c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1779c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Keep track of the number of assigned registers. 1780c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov unsigned freeIntRegs = 6, freeSSERegs = 8; 1781c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1782c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // If the return value is indirect, then the hidden argument is consuming one 1783c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // integer register. 1784c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (FI.getReturnInfo().isIndirect()) 1785c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov --freeIntRegs; 1786c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1787c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.2.3p3: Once arguments are classified, the registers 1788c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // get assigned (in left-to-right order) for passing as follows... 1789c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov for (CGFunctionInfo::arg_iterator it = FI.arg_begin(), ie = FI.arg_end(); 1790c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov it != ie; ++it) { 1791c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov unsigned neededInt, neededSSE; 17925868ca2eb7f00d815f62e46f5a171eb6e5f91b5bChris Lattner it->info = classifyArgumentType(it->type, neededInt, neededSSE); 1793c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1794c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.2.3p3: If there are no registers available for any 1795c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // eightbyte of an argument, the whole argument is passed on the 1796c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // stack. If registers have already been assigned for some 1797c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // eightbytes of such an argument, the assignments get reverted. 1798c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (freeIntRegs >= neededInt && freeSSERegs >= neededSSE) { 1799c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov freeIntRegs -= neededInt; 1800c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov freeSSERegs -= neededSSE; 1801c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } else { 18029c254f0415bef9a0bafe5b5026ddb54b727597b1Chris Lattner it->info = getIndirectResult(it->type); 1803c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 1804c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 1805c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 1806c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1807c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikovstatic llvm::Value *EmitVAArgFromMemory(llvm::Value *VAListAddr, 1808c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov QualType Ty, 1809c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CodeGenFunction &CGF) { 1810c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Value *overflow_arg_area_p = 1811c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CGF.Builder.CreateStructGEP(VAListAddr, 2, "overflow_arg_area_p"); 1812c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Value *overflow_arg_area = 1813c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CGF.Builder.CreateLoad(overflow_arg_area_p, "overflow_arg_area"); 1814c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1815c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.5.7p5: Step 7. Align l->overflow_arg_area upwards to a 16 1816c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // byte boundary if alignment needed by type exceeds 8 byte boundary. 1817c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov uint64_t Align = CGF.getContext().getTypeAlign(Ty) / 8; 1818c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (Align > 8) { 1819c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Note that we follow the ABI & gcc here, even though the type 1820c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // could in theory have an alignment greater than 16. This case 1821c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // shouldn't ever matter in practice. 1822c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1823c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // overflow_arg_area = (overflow_arg_area + 15) & ~15; 18240032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::Value *Offset = 182577b89b87c3b9220fea1bc80f6d6598d2003cc8a8Chris Lattner llvm::ConstantInt::get(CGF.Int32Ty, 15); 1826c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov overflow_arg_area = CGF.Builder.CreateGEP(overflow_arg_area, Offset); 1827c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Value *AsInt = CGF.Builder.CreatePtrToInt(overflow_arg_area, 182877b89b87c3b9220fea1bc80f6d6598d2003cc8a8Chris Lattner CGF.Int64Ty); 182977b89b87c3b9220fea1bc80f6d6598d2003cc8a8Chris Lattner llvm::Value *Mask = llvm::ConstantInt::get(CGF.Int64Ty, ~15LL); 1830c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov overflow_arg_area = 1831c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CGF.Builder.CreateIntToPtr(CGF.Builder.CreateAnd(AsInt, Mask), 1832c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov overflow_arg_area->getType(), 1833c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov "overflow_arg_area.align"); 1834c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 1835c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1836c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.5.7p5: Step 8. Fetch type from l->overflow_arg_area. 1837c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov const llvm::Type *LTy = CGF.ConvertTypeForMem(Ty); 1838c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Value *Res = 1839c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CGF.Builder.CreateBitCast(overflow_arg_area, 184096e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(LTy)); 1841c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1842c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.5.7p5: Step 9. Set l->overflow_arg_area to: 1843c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // l->overflow_arg_area + sizeof(type). 1844c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.5.7p5: Step 10. Align l->overflow_arg_area upwards to 1845c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // an 8 byte boundary. 1846c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1847c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov uint64_t SizeInBytes = (CGF.getContext().getTypeSize(Ty) + 7) / 8; 18480032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::Value *Offset = 184977b89b87c3b9220fea1bc80f6d6598d2003cc8a8Chris Lattner llvm::ConstantInt::get(CGF.Int32Ty, (SizeInBytes + 7) & ~7); 1850c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov overflow_arg_area = CGF.Builder.CreateGEP(overflow_arg_area, Offset, 1851c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov "overflow_arg_area.next"); 1852c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CGF.Builder.CreateStore(overflow_arg_area, overflow_arg_area_p); 1853c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1854c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.5.7p5: Step 11. Return the fetched type. 1855c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return Res; 1856c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 1857c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1858c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikovllvm::Value *X86_64ABIInfo::EmitVAArg(llvm::Value *VAListAddr, QualType Ty, 1859c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CodeGenFunction &CGF) const { 1860a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson llvm::LLVMContext &VMContext = CGF.getLLVMContext(); 18611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1862c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Assume that va_list type is correct; should be pointer to LLVM type: 1863c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // struct { 1864c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // i32 gp_offset; 1865c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // i32 fp_offset; 1866c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // i8* overflow_arg_area; 1867c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // i8* reg_save_area; 1868c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // }; 1869c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov unsigned neededInt, neededSSE; 18708bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1871a14db75641f377ef8b033c67653cd95ac4c36fe3Chris Lattner Ty = CGF.getContext().getCanonicalType(Ty); 18725868ca2eb7f00d815f62e46f5a171eb6e5f91b5bChris Lattner ABIArgInfo AI = classifyArgumentType(Ty, neededInt, neededSSE); 1873c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1874c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.5.7p5: Step 1. Determine whether type may be passed 1875c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // in the registers. If not go to step 7. 1876c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (!neededInt && !neededSSE) 1877c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return EmitVAArgFromMemory(VAListAddr, Ty, CGF); 1878c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1879c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.5.7p5: Step 2. Compute num_gp to hold the number of 1880c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // general purpose registers needed to pass type and num_fp to hold 1881c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // the number of floating point registers needed. 1882c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1883c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.5.7p5: Step 3. Verify whether arguments fit into 1884c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // registers. In the case: l->gp_offset > 48 - num_gp * 8 or 1885c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // l->fp_offset > 304 - num_fp * 16 go to step 7. 1886c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // 1887c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // NOTE: 304 is a typo, there are (6 * 8 + 8 * 16) = 176 bytes of 1888c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // register save space). 1889c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1890c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Value *InRegs = 0; 1891c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Value *gp_offset_p = 0, *gp_offset = 0; 1892c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Value *fp_offset_p = 0, *fp_offset = 0; 1893c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (neededInt) { 1894c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov gp_offset_p = CGF.Builder.CreateStructGEP(VAListAddr, 0, "gp_offset_p"); 1895c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov gp_offset = CGF.Builder.CreateLoad(gp_offset_p, "gp_offset"); 18961090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner InRegs = llvm::ConstantInt::get(CGF.Int32Ty, 48 - neededInt * 8); 18971090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner InRegs = CGF.Builder.CreateICmpULE(gp_offset, InRegs, "fits_in_gp"); 1898c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 1899c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1900c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (neededSSE) { 1901c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov fp_offset_p = CGF.Builder.CreateStructGEP(VAListAddr, 1, "fp_offset_p"); 1902c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov fp_offset = CGF.Builder.CreateLoad(fp_offset_p, "fp_offset"); 1903c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Value *FitsInFP = 19041090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner llvm::ConstantInt::get(CGF.Int32Ty, 176 - neededSSE * 16); 19051090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner FitsInFP = CGF.Builder.CreateICmpULE(fp_offset, FitsInFP, "fits_in_fp"); 1906c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov InRegs = InRegs ? CGF.Builder.CreateAnd(InRegs, FitsInFP) : FitsInFP; 1907c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 1908c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1909c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::BasicBlock *InRegBlock = CGF.createBasicBlock("vaarg.in_reg"); 1910c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::BasicBlock *InMemBlock = CGF.createBasicBlock("vaarg.in_mem"); 1911c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::BasicBlock *ContBlock = CGF.createBasicBlock("vaarg.end"); 1912c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CGF.Builder.CreateCondBr(InRegs, InRegBlock, InMemBlock); 1913c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1914c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Emit code to load the value if it was passed in registers. 1915c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1916c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CGF.EmitBlock(InRegBlock); 1917c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1918c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.5.7p5: Step 4. Fetch type from l->reg_save_area with 1919c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // an offset of l->gp_offset and/or l->fp_offset. This may require 1920c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // copying to a temporary location in case the parameter is passed 1921c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // in different register classes or requires an alignment greater 1922c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // than 8 for general purpose registers and 16 for XMM registers. 1923c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // 1924c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // FIXME: This really results in shameful code when we end up needing to 1925c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // collect arguments from different places; often what should result in a 1926c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // simple assembling of a structure from scattered addresses has many more 1927c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // loads than necessary. Can we clean this up? 1928c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov const llvm::Type *LTy = CGF.ConvertTypeForMem(Ty); 1929c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Value *RegAddr = 1930c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CGF.Builder.CreateLoad(CGF.Builder.CreateStructGEP(VAListAddr, 3), 1931c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov "reg_save_area"); 1932c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (neededInt && neededSSE) { 1933c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // FIXME: Cleanup. 1934800588fd230d2c37ddce8fbf4a3881352715d700Chris Lattner assert(AI.isDirect() && "Unexpected ABI info for mixed regs"); 1935c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov const llvm::StructType *ST = cast<llvm::StructType>(AI.getCoerceToType()); 1936c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Value *Tmp = CGF.CreateTempAlloca(ST); 1937c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov assert(ST->getNumElements() == 2 && "Unexpected ABI info for mixed regs"); 1938c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov const llvm::Type *TyLo = ST->getElementType(0); 1939c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov const llvm::Type *TyHi = ST->getElementType(1); 1940a8b7a7d3eaa51dd200cba1e5541f2542d24d7a6eChris Lattner assert((TyLo->isFPOrFPVectorTy() ^ TyHi->isFPOrFPVectorTy()) && 1941c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov "Unexpected ABI info for mixed regs"); 194296e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson const llvm::Type *PTyLo = llvm::PointerType::getUnqual(TyLo); 194396e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson const llvm::Type *PTyHi = llvm::PointerType::getUnqual(TyHi); 1944c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Value *GPAddr = CGF.Builder.CreateGEP(RegAddr, gp_offset); 1945c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Value *FPAddr = CGF.Builder.CreateGEP(RegAddr, fp_offset); 1946f177d9d6c27fbbcee8c00fd90b8306985c03c54aDuncan Sands llvm::Value *RegLoAddr = TyLo->isFloatingPointTy() ? FPAddr : GPAddr; 1947f177d9d6c27fbbcee8c00fd90b8306985c03c54aDuncan Sands llvm::Value *RegHiAddr = TyLo->isFloatingPointTy() ? GPAddr : FPAddr; 1948c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Value *V = 1949c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CGF.Builder.CreateLoad(CGF.Builder.CreateBitCast(RegLoAddr, PTyLo)); 1950c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CGF.Builder.CreateStore(V, CGF.Builder.CreateStructGEP(Tmp, 0)); 1951c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov V = CGF.Builder.CreateLoad(CGF.Builder.CreateBitCast(RegHiAddr, PTyHi)); 1952c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CGF.Builder.CreateStore(V, CGF.Builder.CreateStructGEP(Tmp, 1)); 1953c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1954a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson RegAddr = CGF.Builder.CreateBitCast(Tmp, 195596e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(LTy)); 1956c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } else if (neededInt) { 1957c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov RegAddr = CGF.Builder.CreateGEP(RegAddr, gp_offset); 1958c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov RegAddr = CGF.Builder.CreateBitCast(RegAddr, 195996e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(LTy)); 1960dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner } else if (neededSSE == 1) { 1961dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner RegAddr = CGF.Builder.CreateGEP(RegAddr, fp_offset); 1962dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner RegAddr = CGF.Builder.CreateBitCast(RegAddr, 1963dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner llvm::PointerType::getUnqual(LTy)); 1964c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } else { 1965dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner assert(neededSSE == 2 && "Invalid number of needed registers!"); 1966dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner // SSE registers are spaced 16 bytes apart in the register save 1967dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner // area, we need to collect the two eightbytes together. 1968dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner llvm::Value *RegAddrLo = CGF.Builder.CreateGEP(RegAddr, fp_offset); 19691090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner llvm::Value *RegAddrHi = CGF.Builder.CreateConstGEP1_32(RegAddrLo, 16); 1970dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner const llvm::Type *DoubleTy = llvm::Type::getDoubleTy(VMContext); 1971dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner const llvm::Type *DblPtrTy = 1972dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner llvm::PointerType::getUnqual(DoubleTy); 1973dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner const llvm::StructType *ST = llvm::StructType::get(VMContext, DoubleTy, 1974dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner DoubleTy, NULL); 1975dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner llvm::Value *V, *Tmp = CGF.CreateTempAlloca(ST); 1976dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner V = CGF.Builder.CreateLoad(CGF.Builder.CreateBitCast(RegAddrLo, 1977dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner DblPtrTy)); 1978dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner CGF.Builder.CreateStore(V, CGF.Builder.CreateStructGEP(Tmp, 0)); 1979dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner V = CGF.Builder.CreateLoad(CGF.Builder.CreateBitCast(RegAddrHi, 1980dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner DblPtrTy)); 1981dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner CGF.Builder.CreateStore(V, CGF.Builder.CreateStructGEP(Tmp, 1)); 1982dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner RegAddr = CGF.Builder.CreateBitCast(Tmp, 1983dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner llvm::PointerType::getUnqual(LTy)); 1984c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 1985c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1986c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.5.7p5: Step 5. Set: 1987c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // l->gp_offset = l->gp_offset + num_gp * 8 1988c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // l->fp_offset = l->fp_offset + num_fp * 16. 1989c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (neededInt) { 199077b89b87c3b9220fea1bc80f6d6598d2003cc8a8Chris Lattner llvm::Value *Offset = llvm::ConstantInt::get(CGF.Int32Ty, neededInt * 8); 1991c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CGF.Builder.CreateStore(CGF.Builder.CreateAdd(gp_offset, Offset), 1992c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov gp_offset_p); 1993c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 1994c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (neededSSE) { 199577b89b87c3b9220fea1bc80f6d6598d2003cc8a8Chris Lattner llvm::Value *Offset = llvm::ConstantInt::get(CGF.Int32Ty, neededSSE * 16); 1996c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CGF.Builder.CreateStore(CGF.Builder.CreateAdd(fp_offset, Offset), 1997c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov fp_offset_p); 1998c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 1999c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CGF.EmitBranch(ContBlock); 2000c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 2001c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Emit code to load the value if it was passed in memory. 2002c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 2003c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CGF.EmitBlock(InMemBlock); 2004c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Value *MemAddr = EmitVAArgFromMemory(VAListAddr, Ty, CGF); 2005c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 2006c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Return the appropriate result. 2007c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 2008c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CGF.EmitBlock(ContBlock); 2009c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::PHINode *ResAddr = CGF.Builder.CreatePHI(RegAddr->getType(), 2010c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov "vaarg.addr"); 2011c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov ResAddr->reserveOperandSpace(2); 2012c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov ResAddr->addIncoming(RegAddr, InRegBlock); 2013c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov ResAddr->addIncoming(MemAddr, InMemBlock); 2014c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return ResAddr; 2015c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 2016c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 2017f13721dd91dda7675e499331a2770308ad20ca61Chris Lattnerllvm::Value *WinX86_64ABIInfo::EmitVAArg(llvm::Value *VAListAddr, QualType Ty, 2018f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner CodeGenFunction &CGF) const { 2019f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner const llvm::Type *BP = llvm::Type::getInt8PtrTy(CGF.getLLVMContext()); 2020f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner const llvm::Type *BPP = llvm::PointerType::getUnqual(BP); 2021f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner 2022f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner CGBuilderTy &Builder = CGF.Builder; 2023f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner llvm::Value *VAListAddrAsBPP = Builder.CreateBitCast(VAListAddr, BPP, 2024f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner "ap"); 2025f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner llvm::Value *Addr = Builder.CreateLoad(VAListAddrAsBPP, "ap.cur"); 2026f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner llvm::Type *PTy = 2027f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner llvm::PointerType::getUnqual(CGF.ConvertType(Ty)); 2028f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner llvm::Value *AddrTyped = Builder.CreateBitCast(Addr, PTy); 2029f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner 2030f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner uint64_t Offset = 2031f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner llvm::RoundUpToAlignment(CGF.getContext().getTypeSize(Ty) / 8, 8); 2032f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner llvm::Value *NextAddr = 2033f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner Builder.CreateGEP(Addr, llvm::ConstantInt::get(CGF.Int32Ty, Offset), 2034f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner "ap.next"); 2035f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner Builder.CreateStore(NextAddr, VAListAddrAsBPP); 2036dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner 2037f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner return AddrTyped; 2038f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner} 2039dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner 2040dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner//===----------------------------------------------------------------------===// 204134d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbar// PIC16 ABI Implementation 2042dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner//===----------------------------------------------------------------------===// 204334d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbar 204434d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbarnamespace { 204534d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbar 2046c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikovclass PIC16ABIInfo : public ABIInfo { 2047ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattnerpublic: 2048ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner PIC16ABIInfo(CodeGenTypes &CGT) : ABIInfo(CGT) {} 20498bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 2050a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner ABIArgInfo classifyReturnType(QualType RetTy) const; 2051c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 2052a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner ABIArgInfo classifyArgumentType(QualType RetTy) const; 2053c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 2054ee5dcd064a811edc90f6c1fb31a837b6c961fed7Chris Lattner virtual void computeInfo(CGFunctionInfo &FI) const { 2055a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner FI.getReturnInfo() = classifyReturnType(FI.getReturnType()); 2056c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov for (CGFunctionInfo::arg_iterator it = FI.arg_begin(), ie = FI.arg_end(); 2057c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov it != ie; ++it) 2058a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner it->info = classifyArgumentType(it->type); 2059c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 2060c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 2061c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov virtual llvm::Value *EmitVAArg(llvm::Value *VAListAddr, QualType Ty, 2062c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CodeGenFunction &CGF) const; 2063c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov}; 2064c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 206582d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikovclass PIC16TargetCodeGenInfo : public TargetCodeGenInfo { 206682d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikovpublic: 2067ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner PIC16TargetCodeGenInfo(CodeGenTypes &CGT) 2068ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner : TargetCodeGenInfo(new PIC16ABIInfo(CGT)) {} 206982d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov}; 207082d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov 207134d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbar} 207234d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbar 2073a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris LattnerABIArgInfo PIC16ABIInfo::classifyReturnType(QualType RetTy) const { 2074c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (RetTy->isVoidType()) { 2075c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return ABIArgInfo::getIgnore(); 2076c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } else { 2077c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return ABIArgInfo::getDirect(); 2078c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 2079c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 2080c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 2081a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris LattnerABIArgInfo PIC16ABIInfo::classifyArgumentType(QualType Ty) const { 2082c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return ABIArgInfo::getDirect(); 2083c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 2084c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 2085c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikovllvm::Value *PIC16ABIInfo::EmitVAArg(llvm::Value *VAListAddr, QualType Ty, 208677b89b87c3b9220fea1bc80f6d6598d2003cc8a8Chris Lattner CodeGenFunction &CGF) const { 208752d9ae3220c08fcbb80f213a364a88e4e0067242Chris Lattner const llvm::Type *BP = llvm::Type::getInt8PtrTy(CGF.getLLVMContext()); 2088a446ecd13a9cd2c150baa5d3db4f817db4b1eba8Sanjiv Gupta const llvm::Type *BPP = llvm::PointerType::getUnqual(BP); 2089a446ecd13a9cd2c150baa5d3db4f817db4b1eba8Sanjiv Gupta 2090a446ecd13a9cd2c150baa5d3db4f817db4b1eba8Sanjiv Gupta CGBuilderTy &Builder = CGF.Builder; 2091a446ecd13a9cd2c150baa5d3db4f817db4b1eba8Sanjiv Gupta llvm::Value *VAListAddrAsBPP = Builder.CreateBitCast(VAListAddr, BPP, 2092a446ecd13a9cd2c150baa5d3db4f817db4b1eba8Sanjiv Gupta "ap"); 2093a446ecd13a9cd2c150baa5d3db4f817db4b1eba8Sanjiv Gupta llvm::Value *Addr = Builder.CreateLoad(VAListAddrAsBPP, "ap.cur"); 2094a446ecd13a9cd2c150baa5d3db4f817db4b1eba8Sanjiv Gupta llvm::Type *PTy = 2095a446ecd13a9cd2c150baa5d3db4f817db4b1eba8Sanjiv Gupta llvm::PointerType::getUnqual(CGF.ConvertType(Ty)); 2096a446ecd13a9cd2c150baa5d3db4f817db4b1eba8Sanjiv Gupta llvm::Value *AddrTyped = Builder.CreateBitCast(Addr, PTy); 2097a446ecd13a9cd2c150baa5d3db4f817db4b1eba8Sanjiv Gupta 2098a446ecd13a9cd2c150baa5d3db4f817db4b1eba8Sanjiv Gupta uint64_t Offset = CGF.getContext().getTypeSize(Ty) / 8; 2099a446ecd13a9cd2c150baa5d3db4f817db4b1eba8Sanjiv Gupta 2100a446ecd13a9cd2c150baa5d3db4f817db4b1eba8Sanjiv Gupta llvm::Value *NextAddr = 2101a446ecd13a9cd2c150baa5d3db4f817db4b1eba8Sanjiv Gupta Builder.CreateGEP(Addr, llvm::ConstantInt::get( 2102a446ecd13a9cd2c150baa5d3db4f817db4b1eba8Sanjiv Gupta llvm::Type::getInt32Ty(CGF.getLLVMContext()), Offset), 2103a446ecd13a9cd2c150baa5d3db4f817db4b1eba8Sanjiv Gupta "ap.next"); 2104a446ecd13a9cd2c150baa5d3db4f817db4b1eba8Sanjiv Gupta Builder.CreateStore(NextAddr, VAListAddrAsBPP); 2105a446ecd13a9cd2c150baa5d3db4f817db4b1eba8Sanjiv Gupta 2106a446ecd13a9cd2c150baa5d3db4f817db4b1eba8Sanjiv Gupta return AddrTyped; 2107c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 2108c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 2109a446ecd13a9cd2c150baa5d3db4f817db4b1eba8Sanjiv Gupta 2110ec853ba1087f606e9685cb1e800616565ba35093John McCall// PowerPC-32 2111ec853ba1087f606e9685cb1e800616565ba35093John McCall 2112ec853ba1087f606e9685cb1e800616565ba35093John McCallnamespace { 2113ec853ba1087f606e9685cb1e800616565ba35093John McCallclass PPC32TargetCodeGenInfo : public DefaultTargetCodeGenInfo { 2114ec853ba1087f606e9685cb1e800616565ba35093John McCallpublic: 2115ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner PPC32TargetCodeGenInfo(CodeGenTypes &CGT) : DefaultTargetCodeGenInfo(CGT) {} 21168bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 2117ec853ba1087f606e9685cb1e800616565ba35093John McCall int getDwarfEHStackPointer(CodeGen::CodeGenModule &M) const { 2118ec853ba1087f606e9685cb1e800616565ba35093John McCall // This is recovered from gcc output. 2119ec853ba1087f606e9685cb1e800616565ba35093John McCall return 1; // r1 is the dedicated stack pointer 2120ec853ba1087f606e9685cb1e800616565ba35093John McCall } 2121ec853ba1087f606e9685cb1e800616565ba35093John McCall 2122ec853ba1087f606e9685cb1e800616565ba35093John McCall bool initDwarfEHRegSizeTable(CodeGen::CodeGenFunction &CGF, 21238bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer llvm::Value *Address) const; 2124ec853ba1087f606e9685cb1e800616565ba35093John McCall}; 2125ec853ba1087f606e9685cb1e800616565ba35093John McCall 2126ec853ba1087f606e9685cb1e800616565ba35093John McCall} 2127ec853ba1087f606e9685cb1e800616565ba35093John McCall 2128ec853ba1087f606e9685cb1e800616565ba35093John McCallbool 2129ec853ba1087f606e9685cb1e800616565ba35093John McCallPPC32TargetCodeGenInfo::initDwarfEHRegSizeTable(CodeGen::CodeGenFunction &CGF, 2130ec853ba1087f606e9685cb1e800616565ba35093John McCall llvm::Value *Address) const { 2131ec853ba1087f606e9685cb1e800616565ba35093John McCall // This is calculated from the LLVM and GCC tables and verified 2132ec853ba1087f606e9685cb1e800616565ba35093John McCall // against gcc output. AFAIK all ABIs use the same encoding. 2133ec853ba1087f606e9685cb1e800616565ba35093John McCall 2134ec853ba1087f606e9685cb1e800616565ba35093John McCall CodeGen::CGBuilderTy &Builder = CGF.Builder; 2135ec853ba1087f606e9685cb1e800616565ba35093John McCall llvm::LLVMContext &Context = CGF.getLLVMContext(); 2136ec853ba1087f606e9685cb1e800616565ba35093John McCall 2137ec853ba1087f606e9685cb1e800616565ba35093John McCall const llvm::IntegerType *i8 = llvm::Type::getInt8Ty(Context); 2138ec853ba1087f606e9685cb1e800616565ba35093John McCall llvm::Value *Four8 = llvm::ConstantInt::get(i8, 4); 2139ec853ba1087f606e9685cb1e800616565ba35093John McCall llvm::Value *Eight8 = llvm::ConstantInt::get(i8, 8); 2140ec853ba1087f606e9685cb1e800616565ba35093John McCall llvm::Value *Sixteen8 = llvm::ConstantInt::get(i8, 16); 2141ec853ba1087f606e9685cb1e800616565ba35093John McCall 2142ec853ba1087f606e9685cb1e800616565ba35093John McCall // 0-31: r0-31, the 4-byte general-purpose registers 2143aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall AssignToArrayRange(Builder, Address, Four8, 0, 31); 2144ec853ba1087f606e9685cb1e800616565ba35093John McCall 2145ec853ba1087f606e9685cb1e800616565ba35093John McCall // 32-63: fp0-31, the 8-byte floating-point registers 2146aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall AssignToArrayRange(Builder, Address, Eight8, 32, 63); 2147ec853ba1087f606e9685cb1e800616565ba35093John McCall 2148ec853ba1087f606e9685cb1e800616565ba35093John McCall // 64-76 are various 4-byte special-purpose registers: 2149ec853ba1087f606e9685cb1e800616565ba35093John McCall // 64: mq 2150ec853ba1087f606e9685cb1e800616565ba35093John McCall // 65: lr 2151ec853ba1087f606e9685cb1e800616565ba35093John McCall // 66: ctr 2152ec853ba1087f606e9685cb1e800616565ba35093John McCall // 67: ap 2153ec853ba1087f606e9685cb1e800616565ba35093John McCall // 68-75 cr0-7 2154ec853ba1087f606e9685cb1e800616565ba35093John McCall // 76: xer 2155aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall AssignToArrayRange(Builder, Address, Four8, 64, 76); 2156ec853ba1087f606e9685cb1e800616565ba35093John McCall 2157ec853ba1087f606e9685cb1e800616565ba35093John McCall // 77-108: v0-31, the 16-byte vector registers 2158aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall AssignToArrayRange(Builder, Address, Sixteen8, 77, 108); 2159ec853ba1087f606e9685cb1e800616565ba35093John McCall 2160ec853ba1087f606e9685cb1e800616565ba35093John McCall // 109: vrsave 2161ec853ba1087f606e9685cb1e800616565ba35093John McCall // 110: vscr 2162ec853ba1087f606e9685cb1e800616565ba35093John McCall // 111: spe_acc 2163ec853ba1087f606e9685cb1e800616565ba35093John McCall // 112: spefscr 2164ec853ba1087f606e9685cb1e800616565ba35093John McCall // 113: sfp 2165aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall AssignToArrayRange(Builder, Address, Four8, 109, 113); 2166ec853ba1087f606e9685cb1e800616565ba35093John McCall 21678bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer return false; 2168ec853ba1087f606e9685cb1e800616565ba35093John McCall} 2169ec853ba1087f606e9685cb1e800616565ba35093John McCall 2170ec853ba1087f606e9685cb1e800616565ba35093John McCall 2171dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner//===----------------------------------------------------------------------===// 217234d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbar// ARM ABI Implementation 2173dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner//===----------------------------------------------------------------------===// 217434d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbar 217534d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbarnamespace { 217634d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbar 2177c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikovclass ARMABIInfo : public ABIInfo { 21785e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbarpublic: 21795e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar enum ABIKind { 21805e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar APCS = 0, 21815e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar AAPCS = 1, 21825e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar AAPCS_VFP 21835e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar }; 21845e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar 21855e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbarprivate: 21865e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar ABIKind Kind; 21875e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar 21885e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbarpublic: 2189ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner ARMABIInfo(CodeGenTypes &CGT, ABIKind _Kind) : ABIInfo(CGT), Kind(_Kind) {} 21905e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar 21915e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbarprivate: 21925e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar ABIKind getABIKind() const { return Kind; } 21935e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar 2194a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner ABIArgInfo classifyReturnType(QualType RetTy) const; 2195a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner ABIArgInfo classifyArgumentType(QualType RetTy) const; 2196c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 2197ee5dcd064a811edc90f6c1fb31a837b6c961fed7Chris Lattner virtual void computeInfo(CGFunctionInfo &FI) const; 2198c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 2199c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov virtual llvm::Value *EmitVAArg(llvm::Value *VAListAddr, QualType Ty, 2200c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CodeGenFunction &CGF) const; 2201c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov}; 2202c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 220382d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikovclass ARMTargetCodeGenInfo : public TargetCodeGenInfo { 220482d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikovpublic: 2205ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner ARMTargetCodeGenInfo(CodeGenTypes &CGT, ARMABIInfo::ABIKind K) 2206ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner :TargetCodeGenInfo(new ARMABIInfo(CGT, K)) {} 22076374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall 22086374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall int getDwarfEHStackPointer(CodeGen::CodeGenModule &M) const { 22096374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall return 13; 22106374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall } 221182d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov}; 221282d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov 221334d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbar} 221434d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbar 2215ee5dcd064a811edc90f6c1fb31a837b6c961fed7Chris Lattnervoid ARMABIInfo::computeInfo(CGFunctionInfo &FI) const { 2216a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner FI.getReturnInfo() = classifyReturnType(FI.getReturnType()); 2217c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov for (CGFunctionInfo::arg_iterator it = FI.arg_begin(), ie = FI.arg_end(); 2218a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner it != ie; ++it) 2219a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner it->info = classifyArgumentType(it->type); 22205e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar 2221a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner const llvm::Triple &Triple(getContext().Target.getTriple()); 222225117ab35c1a033846073183314c68ef07d1701aRafael Espindola llvm::CallingConv::ID DefaultCC; 22231ed1a594e9befc91ebf00d81b41a2fdfab862657Rafael Espindola if (Triple.getEnvironmentName() == "gnueabi" || 22241ed1a594e9befc91ebf00d81b41a2fdfab862657Rafael Espindola Triple.getEnvironmentName() == "eabi") 222525117ab35c1a033846073183314c68ef07d1701aRafael Espindola DefaultCC = llvm::CallingConv::ARM_AAPCS; 22261ed1a594e9befc91ebf00d81b41a2fdfab862657Rafael Espindola else 22271ed1a594e9befc91ebf00d81b41a2fdfab862657Rafael Espindola DefaultCC = llvm::CallingConv::ARM_APCS; 222825117ab35c1a033846073183314c68ef07d1701aRafael Espindola 22295e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar switch (getABIKind()) { 22305e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar case APCS: 223125117ab35c1a033846073183314c68ef07d1701aRafael Espindola if (DefaultCC != llvm::CallingConv::ARM_APCS) 223225117ab35c1a033846073183314c68ef07d1701aRafael Espindola FI.setEffectiveCallingConvention(llvm::CallingConv::ARM_APCS); 22335e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar break; 22345e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar 22355e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar case AAPCS: 223625117ab35c1a033846073183314c68ef07d1701aRafael Espindola if (DefaultCC != llvm::CallingConv::ARM_AAPCS) 223725117ab35c1a033846073183314c68ef07d1701aRafael Espindola FI.setEffectiveCallingConvention(llvm::CallingConv::ARM_AAPCS); 22385e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar break; 22395e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar 22405e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar case AAPCS_VFP: 22415e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar FI.setEffectiveCallingConvention(llvm::CallingConv::ARM_AAPCS_VFP); 22425e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar break; 22435e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar } 2244c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 2245c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 2246a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris LattnerABIArgInfo ARMABIInfo::classifyArgumentType(QualType Ty) const { 2247d608cdb7c044365cf4e8764ade1e11e99c176078John McCall if (!isAggregateTypeForABI(Ty)) { 2248aa74a1e49f7c4b89539830290f76fe2c3e97187fDouglas Gregor // Treat an enum type as its underlying type. 2249aa74a1e49f7c4b89539830290f76fe2c3e97187fDouglas Gregor if (const EnumType *EnumTy = Ty->getAs<EnumType>()) 2250aa74a1e49f7c4b89539830290f76fe2c3e97187fDouglas Gregor Ty = EnumTy->getDecl()->getIntegerType(); 2251aa74a1e49f7c4b89539830290f76fe2c3e97187fDouglas Gregor 2252cc6fa88666ca2f287df4a600eb31a4087bab9c13Anton Korobeynikov return (Ty->isPromotableIntegerType() ? 2253cc6fa88666ca2f287df4a600eb31a4087bab9c13Anton Korobeynikov ABIArgInfo::getExtend() : ABIArgInfo::getDirect()); 2254aa74a1e49f7c4b89539830290f76fe2c3e97187fDouglas Gregor } 225598303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 2256420255710694e958fa04bed1d80d96508949879eDaniel Dunbar // Ignore empty records. 2257a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner if (isEmptyRecord(getContext(), Ty, true)) 2258420255710694e958fa04bed1d80d96508949879eDaniel Dunbar return ABIArgInfo::getIgnore(); 2259420255710694e958fa04bed1d80d96508949879eDaniel Dunbar 22600eb1d9733801764cd8b692c67e117e4feeecf013Rafael Espindola // Structures with either a non-trivial destructor or a non-trivial 22610eb1d9733801764cd8b692c67e117e4feeecf013Rafael Espindola // copy constructor are always indirect. 22620eb1d9733801764cd8b692c67e117e4feeecf013Rafael Espindola if (isRecordWithNonTrivialDestructorOrCopyConstructor(Ty)) 22630eb1d9733801764cd8b692c67e117e4feeecf013Rafael Espindola return ABIArgInfo::getIndirect(0, /*ByVal=*/false); 22640eb1d9733801764cd8b692c67e117e4feeecf013Rafael Espindola 2265c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // FIXME: This is kind of nasty... but there isn't much choice because the ARM 2266c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // backend doesn't support byval. 2267c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // FIXME: This doesn't handle alignment > 64 bits. 2268c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov const llvm::Type* ElemTy; 2269c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov unsigned SizeRegs; 2270a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner if (getContext().getTypeAlign(Ty) > 32) { 2271a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner ElemTy = llvm::Type::getInt64Ty(getVMContext()); 2272a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner SizeRegs = (getContext().getTypeSize(Ty) + 63) / 64; 2273c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } else { 2274a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner ElemTy = llvm::Type::getInt32Ty(getVMContext()); 2275a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner SizeRegs = (getContext().getTypeSize(Ty) + 31) / 32; 2276c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 2277c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov std::vector<const llvm::Type*> LLVMFields; 227896e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson LLVMFields.push_back(llvm::ArrayType::get(ElemTy, SizeRegs)); 2279a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner const llvm::Type* STy = llvm::StructType::get(getVMContext(), LLVMFields, 2280a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner true); 2281800588fd230d2c37ddce8fbf4a3881352715d700Chris Lattner return ABIArgInfo::getDirect(STy); 2282c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 2283c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 2284a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattnerstatic bool isIntegerLikeType(QualType Ty, ASTContext &Context, 228598303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar llvm::LLVMContext &VMContext) { 228698303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar // APCS, C Language Calling Conventions, Non-Simple Return Values: A structure 228798303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar // is called integer-like if its size is less than or equal to one word, and 228898303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar // the offset of each of its addressable sub-fields is zero. 228998303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 229098303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar uint64_t Size = Context.getTypeSize(Ty); 229198303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 229298303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar // Check that the type fits in a word. 229398303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar if (Size > 32) 229498303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar return false; 229598303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 229698303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar // FIXME: Handle vector types! 229798303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar if (Ty->isVectorType()) 229898303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar return false; 229998303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 2300b0d58196808aba4b3d1a7488bd5566f3c0a83e89Daniel Dunbar // Float types are never treated as "integer like". 2301b0d58196808aba4b3d1a7488bd5566f3c0a83e89Daniel Dunbar if (Ty->isRealFloatingType()) 2302b0d58196808aba4b3d1a7488bd5566f3c0a83e89Daniel Dunbar return false; 2303b0d58196808aba4b3d1a7488bd5566f3c0a83e89Daniel Dunbar 230498303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar // If this is a builtin or pointer type then it is ok. 2305183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall if (Ty->getAs<BuiltinType>() || Ty->isPointerType()) 230698303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar return true; 230798303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 23084581581881d3f7349bf5a4b39d761bce688f9164Daniel Dunbar // Small complex integer types are "integer like". 23094581581881d3f7349bf5a4b39d761bce688f9164Daniel Dunbar if (const ComplexType *CT = Ty->getAs<ComplexType>()) 23104581581881d3f7349bf5a4b39d761bce688f9164Daniel Dunbar return isIntegerLikeType(CT->getElementType(), Context, VMContext); 231198303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 231298303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar // Single element and zero sized arrays should be allowed, by the definition 231398303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar // above, but they are not. 231498303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 231598303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar // Otherwise, it must be a record type. 231698303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar const RecordType *RT = Ty->getAs<RecordType>(); 231798303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar if (!RT) return false; 231898303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 231998303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar // Ignore records with flexible arrays. 232098303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar const RecordDecl *RD = RT->getDecl(); 232198303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar if (RD->hasFlexibleArrayMember()) 232298303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar return false; 232398303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 232498303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar // Check that all sub-fields are at offset 0, and are themselves "integer 232598303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar // like". 232698303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar const ASTRecordLayout &Layout = Context.getASTRecordLayout(RD); 232798303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 232898303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar bool HadField = false; 232998303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar unsigned idx = 0; 233098303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar for (RecordDecl::field_iterator i = RD->field_begin(), e = RD->field_end(); 233198303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar i != e; ++i, ++idx) { 233298303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar const FieldDecl *FD = *i; 233398303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 2334679855a6e14fbc6c6838c566aa74c32f52f4f946Daniel Dunbar // Bit-fields are not addressable, we only need to verify they are "integer 2335679855a6e14fbc6c6838c566aa74c32f52f4f946Daniel Dunbar // like". We still have to disallow a subsequent non-bitfield, for example: 2336679855a6e14fbc6c6838c566aa74c32f52f4f946Daniel Dunbar // struct { int : 0; int x } 2337679855a6e14fbc6c6838c566aa74c32f52f4f946Daniel Dunbar // is non-integer like according to gcc. 2338679855a6e14fbc6c6838c566aa74c32f52f4f946Daniel Dunbar if (FD->isBitField()) { 2339679855a6e14fbc6c6838c566aa74c32f52f4f946Daniel Dunbar if (!RD->isUnion()) 2340679855a6e14fbc6c6838c566aa74c32f52f4f946Daniel Dunbar HadField = true; 2341679855a6e14fbc6c6838c566aa74c32f52f4f946Daniel Dunbar 2342679855a6e14fbc6c6838c566aa74c32f52f4f946Daniel Dunbar if (!isIntegerLikeType(FD->getType(), Context, VMContext)) 2343679855a6e14fbc6c6838c566aa74c32f52f4f946Daniel Dunbar return false; 234498303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 2345679855a6e14fbc6c6838c566aa74c32f52f4f946Daniel Dunbar continue; 234698303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar } 234798303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 2348679855a6e14fbc6c6838c566aa74c32f52f4f946Daniel Dunbar // Check if this field is at offset 0. 2349679855a6e14fbc6c6838c566aa74c32f52f4f946Daniel Dunbar if (Layout.getFieldOffset(idx) != 0) 2350679855a6e14fbc6c6838c566aa74c32f52f4f946Daniel Dunbar return false; 2351679855a6e14fbc6c6838c566aa74c32f52f4f946Daniel Dunbar 235298303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar if (!isIntegerLikeType(FD->getType(), Context, VMContext)) 235398303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar return false; 23548bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 2355679855a6e14fbc6c6838c566aa74c32f52f4f946Daniel Dunbar // Only allow at most one field in a structure. This doesn't match the 2356679855a6e14fbc6c6838c566aa74c32f52f4f946Daniel Dunbar // wording above, but follows gcc in situations with a field following an 2357679855a6e14fbc6c6838c566aa74c32f52f4f946Daniel Dunbar // empty structure. 235898303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar if (!RD->isUnion()) { 235998303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar if (HadField) 236098303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar return false; 236198303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 236298303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar HadField = true; 236398303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar } 236498303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar } 236598303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 236698303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar return true; 236798303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar} 236898303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 2369a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris LattnerABIArgInfo ARMABIInfo::classifyReturnType(QualType RetTy) const { 237098303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar if (RetTy->isVoidType()) 2371c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return ABIArgInfo::getIgnore(); 237298303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 2373d608cdb7c044365cf4e8764ade1e11e99c176078John McCall if (!isAggregateTypeForABI(RetTy)) { 2374aa74a1e49f7c4b89539830290f76fe2c3e97187fDouglas Gregor // Treat an enum type as its underlying type. 2375aa74a1e49f7c4b89539830290f76fe2c3e97187fDouglas Gregor if (const EnumType *EnumTy = RetTy->getAs<EnumType>()) 2376aa74a1e49f7c4b89539830290f76fe2c3e97187fDouglas Gregor RetTy = EnumTy->getDecl()->getIntegerType(); 2377aa74a1e49f7c4b89539830290f76fe2c3e97187fDouglas Gregor 2378cc6fa88666ca2f287df4a600eb31a4087bab9c13Anton Korobeynikov return (RetTy->isPromotableIntegerType() ? 2379cc6fa88666ca2f287df4a600eb31a4087bab9c13Anton Korobeynikov ABIArgInfo::getExtend() : ABIArgInfo::getDirect()); 2380aa74a1e49f7c4b89539830290f76fe2c3e97187fDouglas Gregor } 238198303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 23820eb1d9733801764cd8b692c67e117e4feeecf013Rafael Espindola // Structures with either a non-trivial destructor or a non-trivial 23830eb1d9733801764cd8b692c67e117e4feeecf013Rafael Espindola // copy constructor are always indirect. 23840eb1d9733801764cd8b692c67e117e4feeecf013Rafael Espindola if (isRecordWithNonTrivialDestructorOrCopyConstructor(RetTy)) 23850eb1d9733801764cd8b692c67e117e4feeecf013Rafael Espindola return ABIArgInfo::getIndirect(0, /*ByVal=*/false); 23860eb1d9733801764cd8b692c67e117e4feeecf013Rafael Espindola 238798303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar // Are we following APCS? 238898303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar if (getABIKind() == APCS) { 2389a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner if (isEmptyRecord(getContext(), RetTy, false)) 239098303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar return ABIArgInfo::getIgnore(); 239198303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 23924cc753f4503931763cfb762a95928b44fcbe64e9Daniel Dunbar // Complex types are all returned as packed integers. 23934cc753f4503931763cfb762a95928b44fcbe64e9Daniel Dunbar // 23944cc753f4503931763cfb762a95928b44fcbe64e9Daniel Dunbar // FIXME: Consider using 2 x vector types if the back end handles them 23954cc753f4503931763cfb762a95928b44fcbe64e9Daniel Dunbar // correctly. 23964cc753f4503931763cfb762a95928b44fcbe64e9Daniel Dunbar if (RetTy->isAnyComplexType()) 2397800588fd230d2c37ddce8fbf4a3881352715d700Chris Lattner return ABIArgInfo::getDirect(llvm::IntegerType::get(getVMContext(), 2398a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner getContext().getTypeSize(RetTy))); 23994cc753f4503931763cfb762a95928b44fcbe64e9Daniel Dunbar 240098303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar // Integer like structures are returned in r0. 2401a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner if (isIntegerLikeType(RetTy, getContext(), getVMContext())) { 240298303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar // Return in the smallest viable integer type. 2403a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner uint64_t Size = getContext().getTypeSize(RetTy); 240498303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar if (Size <= 8) 2405800588fd230d2c37ddce8fbf4a3881352715d700Chris Lattner return ABIArgInfo::getDirect(llvm::Type::getInt8Ty(getVMContext())); 240698303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar if (Size <= 16) 2407800588fd230d2c37ddce8fbf4a3881352715d700Chris Lattner return ABIArgInfo::getDirect(llvm::Type::getInt16Ty(getVMContext())); 2408800588fd230d2c37ddce8fbf4a3881352715d700Chris Lattner return ABIArgInfo::getDirect(llvm::Type::getInt32Ty(getVMContext())); 240998303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar } 241098303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 241198303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar // Otherwise return in memory. 241298303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar return ABIArgInfo::getIndirect(0); 2413c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 241498303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 241598303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar // Otherwise this is an AAPCS variant. 241698303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 2417a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner if (isEmptyRecord(getContext(), RetTy, true)) 241816a0808b7992db2c2ba78b387e1732bbb0fb371bDaniel Dunbar return ABIArgInfo::getIgnore(); 241916a0808b7992db2c2ba78b387e1732bbb0fb371bDaniel Dunbar 242098303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar // Aggregates <= 4 bytes are returned in r0; other aggregates 242198303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar // are returned indirectly. 2422a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner uint64_t Size = getContext().getTypeSize(RetTy); 242316a0808b7992db2c2ba78b387e1732bbb0fb371bDaniel Dunbar if (Size <= 32) { 242416a0808b7992db2c2ba78b387e1732bbb0fb371bDaniel Dunbar // Return in the smallest viable integer type. 242516a0808b7992db2c2ba78b387e1732bbb0fb371bDaniel Dunbar if (Size <= 8) 2426800588fd230d2c37ddce8fbf4a3881352715d700Chris Lattner return ABIArgInfo::getDirect(llvm::Type::getInt8Ty(getVMContext())); 242716a0808b7992db2c2ba78b387e1732bbb0fb371bDaniel Dunbar if (Size <= 16) 2428800588fd230d2c37ddce8fbf4a3881352715d700Chris Lattner return ABIArgInfo::getDirect(llvm::Type::getInt16Ty(getVMContext())); 2429800588fd230d2c37ddce8fbf4a3881352715d700Chris Lattner return ABIArgInfo::getDirect(llvm::Type::getInt32Ty(getVMContext())); 243016a0808b7992db2c2ba78b387e1732bbb0fb371bDaniel Dunbar } 243116a0808b7992db2c2ba78b387e1732bbb0fb371bDaniel Dunbar 243298303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar return ABIArgInfo::getIndirect(0); 2433c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 2434c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 2435c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikovllvm::Value *ARMABIInfo::EmitVAArg(llvm::Value *VAListAddr, QualType Ty, 243677b89b87c3b9220fea1bc80f6d6598d2003cc8a8Chris Lattner CodeGenFunction &CGF) const { 2437c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // FIXME: Need to handle alignment 24383c0ef8cc0dc246bd3083e8cdd63005e8873d36d2Benjamin Kramer const llvm::Type *BP = llvm::Type::getInt8PtrTy(CGF.getLLVMContext()); 243996e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson const llvm::Type *BPP = llvm::PointerType::getUnqual(BP); 2440c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 2441c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CGBuilderTy &Builder = CGF.Builder; 2442c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Value *VAListAddrAsBPP = Builder.CreateBitCast(VAListAddr, BPP, 2443c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov "ap"); 2444c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Value *Addr = Builder.CreateLoad(VAListAddrAsBPP, "ap.cur"); 2445c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Type *PTy = 244696e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(CGF.ConvertType(Ty)); 2447c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Value *AddrTyped = Builder.CreateBitCast(Addr, PTy); 2448c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 2449c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov uint64_t Offset = 2450c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::RoundUpToAlignment(CGF.getContext().getTypeSize(Ty) / 8, 4); 2451c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Value *NextAddr = 245277b89b87c3b9220fea1bc80f6d6598d2003cc8a8Chris Lattner Builder.CreateGEP(Addr, llvm::ConstantInt::get(CGF.Int32Ty, Offset), 2453c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov "ap.next"); 2454c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Builder.CreateStore(NextAddr, VAListAddrAsBPP); 2455c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 2456c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return AddrTyped; 2457c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 2458c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 2459a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris LattnerABIArgInfo DefaultABIInfo::classifyReturnType(QualType RetTy) const { 2460a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner if (RetTy->isVoidType()) 2461c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return ABIArgInfo::getIgnore(); 2462a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner 2463d608cdb7c044365cf4e8764ade1e11e99c176078John McCall if (isAggregateTypeForABI(RetTy)) 2464c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return ABIArgInfo::getIndirect(0); 2465aa74a1e49f7c4b89539830290f76fe2c3e97187fDouglas Gregor 2466a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner // Treat an enum type as its underlying type. 2467a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner if (const EnumType *EnumTy = RetTy->getAs<EnumType>()) 2468a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner RetTy = EnumTy->getDecl()->getIntegerType(); 2469a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner 2470a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner return (RetTy->isPromotableIntegerType() ? 2471a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner ABIArgInfo::getExtend() : ABIArgInfo::getDirect()); 2472c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 2473c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 2474dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner//===----------------------------------------------------------------------===// 247534d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbar// SystemZ ABI Implementation 2476dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner//===----------------------------------------------------------------------===// 247734d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbar 247889e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikovnamespace { 247934d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbar 248089e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikovclass SystemZABIInfo : public ABIInfo { 2481ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattnerpublic: 2482ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner SystemZABIInfo(CodeGenTypes &CGT) : ABIInfo(CGT) {} 2483ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner 248489e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov bool isPromotableIntegerType(QualType Ty) const; 248589e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov 2486a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner ABIArgInfo classifyReturnType(QualType RetTy) const; 2487a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner ABIArgInfo classifyArgumentType(QualType RetTy) const; 248889e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov 2489ee5dcd064a811edc90f6c1fb31a837b6c961fed7Chris Lattner virtual void computeInfo(CGFunctionInfo &FI) const { 2490a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner FI.getReturnInfo() = classifyReturnType(FI.getReturnType()); 249189e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov for (CGFunctionInfo::arg_iterator it = FI.arg_begin(), ie = FI.arg_end(); 249289e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov it != ie; ++it) 2493a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner it->info = classifyArgumentType(it->type); 249489e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov } 249589e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov 249689e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov virtual llvm::Value *EmitVAArg(llvm::Value *VAListAddr, QualType Ty, 249789e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov CodeGenFunction &CGF) const; 249889e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov}; 249934d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbar 250082d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikovclass SystemZTargetCodeGenInfo : public TargetCodeGenInfo { 250182d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikovpublic: 2502ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner SystemZTargetCodeGenInfo(CodeGenTypes &CGT) 2503ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner : TargetCodeGenInfo(new SystemZABIInfo(CGT)) {} 250482d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov}; 250582d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov 250689e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov} 250789e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov 250889e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikovbool SystemZABIInfo::isPromotableIntegerType(QualType Ty) const { 250989e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov // SystemZ ABI requires all 8, 16 and 32 bit quantities to be extended. 2510183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall if (const BuiltinType *BT = Ty->getAs<BuiltinType>()) 251189e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov switch (BT->getKind()) { 251289e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov case BuiltinType::Bool: 251389e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov case BuiltinType::Char_S: 251489e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov case BuiltinType::Char_U: 251589e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov case BuiltinType::SChar: 251689e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov case BuiltinType::UChar: 251789e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov case BuiltinType::Short: 251889e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov case BuiltinType::UShort: 251989e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov case BuiltinType::Int: 252089e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov case BuiltinType::UInt: 252189e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov return true; 252289e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov default: 252389e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov return false; 252489e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov } 252589e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov return false; 252689e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov} 252789e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov 252889e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikovllvm::Value *SystemZABIInfo::EmitVAArg(llvm::Value *VAListAddr, QualType Ty, 252989e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov CodeGenFunction &CGF) const { 253089e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov // FIXME: Implement 253189e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov return 0; 253289e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov} 253389e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov 253489e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov 2535a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris LattnerABIArgInfo SystemZABIInfo::classifyReturnType(QualType RetTy) const { 2536a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner if (RetTy->isVoidType()) 253789e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov return ABIArgInfo::getIgnore(); 2538d608cdb7c044365cf4e8764ade1e11e99c176078John McCall if (isAggregateTypeForABI(RetTy)) 253989e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov return ABIArgInfo::getIndirect(0); 2540a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner 2541a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner return (isPromotableIntegerType(RetTy) ? 2542a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner ABIArgInfo::getExtend() : ABIArgInfo::getDirect()); 254389e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov} 254489e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov 2545a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris LattnerABIArgInfo SystemZABIInfo::classifyArgumentType(QualType Ty) const { 2546d608cdb7c044365cf4e8764ade1e11e99c176078John McCall if (isAggregateTypeForABI(Ty)) 254789e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov return ABIArgInfo::getIndirect(0); 2548a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner 2549a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner return (isPromotableIntegerType(Ty) ? 2550a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner ABIArgInfo::getExtend() : ABIArgInfo::getDirect()); 255189e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov} 255289e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov 2553dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner//===----------------------------------------------------------------------===// 255482d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov// MSP430 ABI Implementation 2555dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner//===----------------------------------------------------------------------===// 255682d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov 255782d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikovnamespace { 255882d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov 255982d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikovclass MSP430TargetCodeGenInfo : public TargetCodeGenInfo { 256082d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikovpublic: 2561ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner MSP430TargetCodeGenInfo(CodeGenTypes &CGT) 2562ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner : TargetCodeGenInfo(new DefaultABIInfo(CGT)) {} 256382d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov void SetTargetAttributes(const Decl *D, llvm::GlobalValue *GV, 256482d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov CodeGen::CodeGenModule &M) const; 256582d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov}; 256682d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov 2567c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 2568c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 256982d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikovvoid MSP430TargetCodeGenInfo::SetTargetAttributes(const Decl *D, 257082d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov llvm::GlobalValue *GV, 257182d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov CodeGen::CodeGenModule &M) const { 257282d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 257382d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov if (const MSP430InterruptAttr *attr = FD->getAttr<MSP430InterruptAttr>()) { 257482d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov // Handle 'interrupt' attribute: 257582d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov llvm::Function *F = cast<llvm::Function>(GV); 257682d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov 257782d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov // Step 1: Set ISR calling convention. 257882d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov F->setCallingConv(llvm::CallingConv::MSP430_INTR); 257982d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov 258082d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov // Step 2: Add attributes goodness. 258182d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov F->addFnAttr(llvm::Attribute::NoInline); 258282d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov 258382d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov // Step 3: Emit ISR vector alias. 258482d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov unsigned Num = attr->getNumber() + 0xffe0; 258582d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov new llvm::GlobalAlias(GV->getType(), llvm::Function::ExternalLinkage, 258682d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov "vector_" + 258782d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov llvm::LowercaseString(llvm::utohexstr(Num)), 258882d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov GV, &M.getModule()); 258982d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov } 259082d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov } 2591c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 2592c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 2593dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner//===----------------------------------------------------------------------===// 2594aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall// MIPS ABI Implementation. This works for both little-endian and 2595aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall// big-endian variants. 2596dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner//===----------------------------------------------------------------------===// 2597dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner 2598aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCallnamespace { 2599aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCallclass MIPSTargetCodeGenInfo : public TargetCodeGenInfo { 2600aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCallpublic: 2601ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner MIPSTargetCodeGenInfo(CodeGenTypes &CGT) 2602ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner : TargetCodeGenInfo(new DefaultABIInfo(CGT)) {} 2603aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall 2604aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall int getDwarfEHStackPointer(CodeGen::CodeGenModule &CGM) const { 2605aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall return 29; 2606aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall } 2607aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall 2608aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall bool initDwarfEHRegSizeTable(CodeGen::CodeGenFunction &CGF, 26098bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer llvm::Value *Address) const; 2610aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall}; 2611aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall} 2612aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall 2613aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCallbool 2614aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCallMIPSTargetCodeGenInfo::initDwarfEHRegSizeTable(CodeGen::CodeGenFunction &CGF, 2615aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall llvm::Value *Address) const { 2616aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall // This information comes from gcc's implementation, which seems to 2617aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall // as canonical as it gets. 2618aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall 2619aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall CodeGen::CGBuilderTy &Builder = CGF.Builder; 2620aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall llvm::LLVMContext &Context = CGF.getLLVMContext(); 2621aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall 2622aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall // Everything on MIPS is 4 bytes. Double-precision FP registers 2623aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall // are aliased to pairs of single-precision FP registers. 2624aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall const llvm::IntegerType *i8 = llvm::Type::getInt8Ty(Context); 2625aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall llvm::Value *Four8 = llvm::ConstantInt::get(i8, 4); 2626aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall 2627aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall // 0-31 are the general purpose registers, $0 - $31. 2628aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall // 32-63 are the floating-point registers, $f0 - $f31. 2629aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall // 64 and 65 are the multiply/divide registers, $hi and $lo. 2630aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall // 66 is the (notional, I think) register for signal-handler return. 2631aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall AssignToArrayRange(Builder, Address, Four8, 0, 65); 2632aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall 2633aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall // 67-74 are the floating-point status registers, $fcc0 - $fcc7. 2634aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall // They are one bit wide and ignored here. 2635aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall 2636aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall // 80-111 are the coprocessor 0 registers, $c0r0 - $c0r31. 2637aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall // (coprocessor 1 is the FP unit) 2638aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall // 112-143 are the coprocessor 2 registers, $c2r0 - $c2r31. 2639aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall // 144-175 are the coprocessor 3 registers, $c3r0 - $c3r31. 2640aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall // 176-181 are the DSP accumulator registers. 2641aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall AssignToArrayRange(Builder, Address, Four8, 80, 181); 2642aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall 2643aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall return false; 2644aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall} 2645aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall 2646aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall 2647ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattnerconst TargetCodeGenInfo &CodeGenModule::getTargetCodeGenInfo() { 264882d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov if (TheTargetCodeGenInfo) 264982d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov return *TheTargetCodeGenInfo; 2650c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 265182d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov // For now we just cache the TargetCodeGenInfo in CodeGenModule and don't 265282d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov // free it. 26532c0843f166a82f251b20370fadab57878969e7aaDaniel Dunbar 26549c254f0415bef9a0bafe5b5026ddb54b727597b1Chris Lattner const llvm::Triple &Triple = getContext().Target.getTriple(); 26551752ee4849f4c37f5e03193e658be92650b0e65aDaniel Dunbar switch (Triple.getArch()) { 26562c0843f166a82f251b20370fadab57878969e7aaDaniel Dunbar default: 2657ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner return *(TheTargetCodeGenInfo = new DefaultTargetCodeGenInfo(Types)); 26582c0843f166a82f251b20370fadab57878969e7aaDaniel Dunbar 2659aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall case llvm::Triple::mips: 2660aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall case llvm::Triple::mipsel: 2661ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner return *(TheTargetCodeGenInfo = new MIPSTargetCodeGenInfo(Types)); 2662aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall 266334d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbar case llvm::Triple::arm: 266434d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbar case llvm::Triple::thumb: 26655e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar // FIXME: We want to know the float calling convention as well. 2666018ba5ab0671d9b6eefecaffc118c869bea151a1Daniel Dunbar if (strcmp(getContext().Target.getABI(), "apcs-gnu") == 0) 266782d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov return *(TheTargetCodeGenInfo = 2668ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner new ARMTargetCodeGenInfo(Types, ARMABIInfo::APCS)); 26695e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar 267082d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov return *(TheTargetCodeGenInfo = 2671ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner new ARMTargetCodeGenInfo(Types, ARMABIInfo::AAPCS)); 267234d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbar 267334d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbar case llvm::Triple::pic16: 2674ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner return *(TheTargetCodeGenInfo = new PIC16TargetCodeGenInfo(Types)); 267534d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbar 2676ec853ba1087f606e9685cb1e800616565ba35093John McCall case llvm::Triple::ppc: 2677ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner return *(TheTargetCodeGenInfo = new PPC32TargetCodeGenInfo(Types)); 2678ec853ba1087f606e9685cb1e800616565ba35093John McCall 267934d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbar case llvm::Triple::systemz: 2680ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner return *(TheTargetCodeGenInfo = new SystemZTargetCodeGenInfo(Types)); 268182d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov 268282d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov case llvm::Triple::msp430: 2683ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner return *(TheTargetCodeGenInfo = new MSP430TargetCodeGenInfo(Types)); 268434d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbar 26851752ee4849f4c37f5e03193e658be92650b0e65aDaniel Dunbar case llvm::Triple::x86: 26861752ee4849f4c37f5e03193e658be92650b0e65aDaniel Dunbar switch (Triple.getOS()) { 26877ee68bd706c0ade45d3d1e85c77e25678f5ab1e8Edward O'Callaghan case llvm::Triple::Darwin: 268882d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov return *(TheTargetCodeGenInfo = 2689ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner new X86_32TargetCodeGenInfo(Types, true, true)); 26902c0843f166a82f251b20370fadab57878969e7aaDaniel Dunbar case llvm::Triple::Cygwin: 26912c0843f166a82f251b20370fadab57878969e7aaDaniel Dunbar case llvm::Triple::MinGW32: 2692727e268bd2974a7b16af65a5cfdfe47da9ebeb6cEdward O'Callaghan case llvm::Triple::AuroraUX: 2693727e268bd2974a7b16af65a5cfdfe47da9ebeb6cEdward O'Callaghan case llvm::Triple::DragonFly: 269475c135a511c855d94bbfa7f00dd27a165f61e953David Chisnall case llvm::Triple::FreeBSD: 26952c0843f166a82f251b20370fadab57878969e7aaDaniel Dunbar case llvm::Triple::OpenBSD: 269682d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov return *(TheTargetCodeGenInfo = 2697ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner new X86_32TargetCodeGenInfo(Types, false, true)); 26982c0843f166a82f251b20370fadab57878969e7aaDaniel Dunbar 26992c0843f166a82f251b20370fadab57878969e7aaDaniel Dunbar default: 270082d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov return *(TheTargetCodeGenInfo = 2701ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner new X86_32TargetCodeGenInfo(Types, false, false)); 2702c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 27032c0843f166a82f251b20370fadab57878969e7aaDaniel Dunbar 27042c0843f166a82f251b20370fadab57878969e7aaDaniel Dunbar case llvm::Triple::x86_64: 2705f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner switch (Triple.getOS()) { 2706f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner case llvm::Triple::Win32: 2707f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner case llvm::Triple::MinGW64: 2708f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner case llvm::Triple::Cygwin: 2709f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner return *(TheTargetCodeGenInfo = new WinX86_64TargetCodeGenInfo(Types)); 2710f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner default: 2711f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner return *(TheTargetCodeGenInfo = new X86_64TargetCodeGenInfo(Types)); 2712f13721dd91dda7675e499331a2770308ad20ca61Chris Lattner } 2713c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 2714c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 2715