TargetInfo.cpp revision 0fefa4175b0c9101564946f6a975ee9946c16d4b
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 { 3391e4249c10606f706aac181e6f5e8435ea99d9603David Chisnall bool IsDarwinVectorABI; 3401e4249c10606f706aac181e6f5e8435ea99d9603David Chisnall bool IsSmallStructInRegABI; 341c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 342c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov static bool isRegisterSize(unsigned Size) { 343c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return (Size == 8 || Size == 16 || Size == 32 || Size == 64); 344c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 345c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 346c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov static bool shouldReturnTypeInRegister(QualType Ty, ASTContext &Context); 347c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 348dc6d574155072bfb35a7a29b94ef3afa0d40fb5aDaniel Dunbar /// getIndirectResult - Give a source type \arg Ty, return a suitable result 349dc6d574155072bfb35a7a29b94ef3afa0d40fb5aDaniel Dunbar /// such that the argument will be passed in memory. 350a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner ABIArgInfo getIndirectResult(QualType Ty, bool ByVal = true) const; 351dc6d574155072bfb35a7a29b94ef3afa0d40fb5aDaniel Dunbar 352c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikovpublic: 353c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 354a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner ABIArgInfo classifyReturnType(QualType RetTy) const; 355a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner ABIArgInfo classifyArgumentType(QualType RetTy) const; 356c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 357ee5dcd064a811edc90f6c1fb31a837b6c961fed7Chris Lattner virtual void computeInfo(CGFunctionInfo &FI) const { 358a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner FI.getReturnInfo() = classifyReturnType(FI.getReturnType()); 359c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov for (CGFunctionInfo::arg_iterator it = FI.arg_begin(), ie = FI.arg_end(); 360c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov it != ie; ++it) 361a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner it->info = classifyArgumentType(it->type); 362c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 363c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 364c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov virtual llvm::Value *EmitVAArg(llvm::Value *VAListAddr, QualType Ty, 365c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CodeGenFunction &CGF) const; 366c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 367ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner X86_32ABIInfo(CodeGen::CodeGenTypes &CGT, bool d, bool p) 368ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner : ABIInfo(CGT), IsDarwinVectorABI(d), IsSmallStructInRegABI(p) {} 369c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov}; 370c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 37182d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikovclass X86_32TargetCodeGenInfo : public TargetCodeGenInfo { 37282d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikovpublic: 373ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner X86_32TargetCodeGenInfo(CodeGen::CodeGenTypes &CGT, bool d, bool p) 374ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner :TargetCodeGenInfo(new X86_32ABIInfo(CGT, d, p)) {} 37574f7293eb30bf77355c20a3c2cad7b67d8ce7388Charles Davis 37674f7293eb30bf77355c20a3c2cad7b67d8ce7388Charles Davis void SetTargetAttributes(const Decl *D, llvm::GlobalValue *GV, 37774f7293eb30bf77355c20a3c2cad7b67d8ce7388Charles Davis CodeGen::CodeGenModule &CGM) const; 3786374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall 3796374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall int getDwarfEHStackPointer(CodeGen::CodeGenModule &CGM) const { 3806374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall // Darwin uses different dwarf register numbers for EH. 3816374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall if (CGM.isTargetDarwin()) return 5; 3826374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall 3836374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall return 4; 3846374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall } 3856374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall 3866374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall bool initDwarfEHRegSizeTable(CodeGen::CodeGenFunction &CGF, 3876374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall llvm::Value *Address) const; 38882d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov}; 38982d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov 39082d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov} 391c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 392c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov/// shouldReturnTypeInRegister - Determine if the given type should be 393c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov/// passed in a register (for the Darwin ABI). 394c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikovbool X86_32ABIInfo::shouldReturnTypeInRegister(QualType Ty, 395c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov ASTContext &Context) { 396c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov uint64_t Size = Context.getTypeSize(Ty); 397c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 398c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Type must be register sized. 399c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (!isRegisterSize(Size)) 400c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return false; 401c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 402c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (Ty->isVectorType()) { 403c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // 64- and 128- bit vectors inside structures are not returned in 404c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // registers. 405c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (Size == 64 || Size == 128) 406c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return false; 407c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 408c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return true; 409c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 410c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 4117711523d948bbe635f690f5795ef7ea9a3289eb2Daniel Dunbar // If this is a builtin, pointer, enum, complex type, member pointer, or 4127711523d948bbe635f690f5795ef7ea9a3289eb2Daniel Dunbar // member function pointer it is ok. 413a1842d32a1964712e42078e9b389dce9258c6a8cDaniel Dunbar if (Ty->getAs<BuiltinType>() || Ty->hasPointerRepresentation() || 41455e59e139d9ebcaae16d710472e28edbcafac98aDaniel Dunbar Ty->isAnyComplexType() || Ty->isEnumeralType() || 4157711523d948bbe635f690f5795ef7ea9a3289eb2Daniel Dunbar Ty->isBlockPointerType() || Ty->isMemberPointerType()) 416c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return true; 417c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 418c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Arrays are treated like records. 419c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (const ConstantArrayType *AT = Context.getAsConstantArrayType(Ty)) 420c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return shouldReturnTypeInRegister(AT->getElementType(), Context); 421c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 422c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Otherwise, it must be a record type. 4236217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek const RecordType *RT = Ty->getAs<RecordType>(); 424c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (!RT) return false; 425c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 426a887423cf580e19b2d03e3a0499c065730c96b28Anders Carlsson // FIXME: Traverse bases here too. 427a887423cf580e19b2d03e3a0499c065730c96b28Anders Carlsson 428c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Structure types are passed in register if all fields would be 429c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // passed in a register. 43017945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis for (RecordDecl::field_iterator i = RT->getDecl()->field_begin(), 43117945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis e = RT->getDecl()->field_end(); i != e; ++i) { 432c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov const FieldDecl *FD = *i; 433c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 434c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Empty fields are ignored. 43598303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar if (isEmptyField(Context, FD, true)) 436c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov continue; 437c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 438c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Check fields recursively. 439c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (!shouldReturnTypeInRegister(FD->getType(), Context)) 440c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return false; 441c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 442c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 443c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return true; 444c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 445c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 446a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris LattnerABIArgInfo X86_32ABIInfo::classifyReturnType(QualType RetTy) const { 447a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner if (RetTy->isVoidType()) 448c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return ABIArgInfo::getIgnore(); 4498bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 450a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner if (const VectorType *VT = RetTy->getAs<VectorType>()) { 451c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // On Darwin, some vectors are returned in registers. 4521e4249c10606f706aac181e6f5e8435ea99d9603David Chisnall if (IsDarwinVectorABI) { 453a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner uint64_t Size = getContext().getTypeSize(RetTy); 454c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 455c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // 128-bit vectors are a special case; they are returned in 456c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // registers and we need to make sure to pick a type the LLVM 457c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // backend will like. 458c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (Size == 128) 459800588fd230d2c37ddce8fbf4a3881352715d700Chris Lattner return ABIArgInfo::getDirect(llvm::VectorType::get( 460a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner llvm::Type::getInt64Ty(getVMContext()), 2)); 461c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 462c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Always return in register if it fits in a general purpose 463c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // register, or if it is 64 bits and has a single element. 464c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if ((Size == 8 || Size == 16 || Size == 32) || 465c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov (Size == 64 && VT->getNumElements() == 1)) 466800588fd230d2c37ddce8fbf4a3881352715d700Chris Lattner return ABIArgInfo::getDirect(llvm::IntegerType::get(getVMContext(), 467a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner Size)); 468c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 469c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return ABIArgInfo::getIndirect(0); 470c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 471c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 472c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return ABIArgInfo::getDirect(); 473a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner } 4748bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 475d608cdb7c044365cf4e8764ade1e11e99c176078John McCall if (isAggregateTypeForABI(RetTy)) { 476a887423cf580e19b2d03e3a0499c065730c96b28Anders Carlsson if (const RecordType *RT = RetTy->getAs<RecordType>()) { 47740092972b591646b47037d2b46b695a4014df413Anders Carlsson // Structures with either a non-trivial destructor or a non-trivial 47840092972b591646b47037d2b46b695a4014df413Anders Carlsson // copy constructor are always indirect. 47940092972b591646b47037d2b46b695a4014df413Anders Carlsson if (hasNonTrivialDestructorOrCopyConstructor(RT)) 48040092972b591646b47037d2b46b695a4014df413Anders Carlsson return ABIArgInfo::getIndirect(0, /*ByVal=*/false); 4818bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 48240092972b591646b47037d2b46b695a4014df413Anders Carlsson // Structures with flexible arrays are always indirect. 483c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (RT->getDecl()->hasFlexibleArrayMember()) 484c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return ABIArgInfo::getIndirect(0); 48540092972b591646b47037d2b46b695a4014df413Anders Carlsson } 4868bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 4871e4249c10606f706aac181e6f5e8435ea99d9603David Chisnall // If specified, structs and unions are always indirect. 4881e4249c10606f706aac181e6f5e8435ea99d9603David Chisnall if (!IsSmallStructInRegABI && !RetTy->isAnyComplexType()) 489c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return ABIArgInfo::getIndirect(0); 490c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 491c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Classify "single element" structs as their element type. 492a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner if (const Type *SeltTy = isSingleElementStruct(RetTy, getContext())) { 493183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall if (const BuiltinType *BT = SeltTy->getAs<BuiltinType>()) { 494c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (BT->isIntegerType()) { 495c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // We need to use the size of the structure, padding 496c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // bit-fields can adjust that to be larger than the single 497c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // element type. 498a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner uint64_t Size = getContext().getTypeSize(RetTy); 499800588fd230d2c37ddce8fbf4a3881352715d700Chris Lattner return ABIArgInfo::getDirect( 500a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner llvm::IntegerType::get(getVMContext(), (unsigned)Size)); 501a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner } 5028bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 503a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner if (BT->getKind() == BuiltinType::Float) { 504a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner assert(getContext().getTypeSize(RetTy) == 505a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner getContext().getTypeSize(SeltTy) && 506c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov "Unexpect single element structure size!"); 507800588fd230d2c37ddce8fbf4a3881352715d700Chris Lattner return ABIArgInfo::getDirect(llvm::Type::getFloatTy(getVMContext())); 508a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner } 5098bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 510a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner if (BT->getKind() == BuiltinType::Double) { 511a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner assert(getContext().getTypeSize(RetTy) == 512a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner getContext().getTypeSize(SeltTy) && 513c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov "Unexpect single element structure size!"); 514800588fd230d2c37ddce8fbf4a3881352715d700Chris Lattner return ABIArgInfo::getDirect(llvm::Type::getDoubleTy(getVMContext())); 515c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 516c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } else if (SeltTy->isPointerType()) { 517c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // FIXME: It would be really nice if this could come out as the proper 518c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // pointer type. 519a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner const llvm::Type *PtrTy = llvm::Type::getInt8PtrTy(getVMContext()); 520800588fd230d2c37ddce8fbf4a3881352715d700Chris Lattner return ABIArgInfo::getDirect(PtrTy); 521c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } else if (SeltTy->isVectorType()) { 522c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // 64- and 128-bit vectors are never returned in a 523c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // register when inside a structure. 524a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner uint64_t Size = getContext().getTypeSize(RetTy); 525c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (Size == 64 || Size == 128) 526c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return ABIArgInfo::getIndirect(0); 527c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 528a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner return classifyReturnType(QualType(SeltTy, 0)); 529c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 530c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 531c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 532c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Small structures which are register sized are generally returned 533c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // in a register. 534a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner if (X86_32ABIInfo::shouldReturnTypeInRegister(RetTy, getContext())) { 535a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner uint64_t Size = getContext().getTypeSize(RetTy); 536800588fd230d2c37ddce8fbf4a3881352715d700Chris Lattner return ABIArgInfo::getDirect(llvm::IntegerType::get(getVMContext(),Size)); 537c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 538c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 539c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return ABIArgInfo::getIndirect(0); 540c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 5418bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 542a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner // Treat an enum type as its underlying type. 543a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner if (const EnumType *EnumTy = RetTy->getAs<EnumType>()) 544a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner RetTy = EnumTy->getDecl()->getIntegerType(); 545a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner 546a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner return (RetTy->isPromotableIntegerType() ? 547a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner ABIArgInfo::getExtend() : ABIArgInfo::getDirect()); 548c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 549c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 550a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris LattnerABIArgInfo X86_32ABIInfo::getIndirectResult(QualType Ty, bool ByVal) const { 55146c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar if (!ByVal) 55246c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar return ABIArgInfo::getIndirect(0, false); 55346c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar 55446c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar // Compute the byval alignment. We trust the back-end to honor the 55546c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar // minimum ABI alignment for byval, to make cleaner IR. 55646c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar const unsigned MinABIAlign = 4; 557a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner unsigned Align = getContext().getTypeAlign(Ty) / 8; 55846c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar if (Align > MinABIAlign) 55946c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar return ABIArgInfo::getIndirect(Align); 56046c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar return ABIArgInfo::getIndirect(0); 561dc6d574155072bfb35a7a29b94ef3afa0d40fb5aDaniel Dunbar} 562dc6d574155072bfb35a7a29b94ef3afa0d40fb5aDaniel Dunbar 563a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris LattnerABIArgInfo X86_32ABIInfo::classifyArgumentType(QualType Ty) const { 564c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // FIXME: Set alignment on indirect arguments. 565d608cdb7c044365cf4e8764ade1e11e99c176078John McCall if (isAggregateTypeForABI(Ty)) { 566c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Structures with flexible arrays are always indirect. 567a887423cf580e19b2d03e3a0499c065730c96b28Anders Carlsson if (const RecordType *RT = Ty->getAs<RecordType>()) { 568a887423cf580e19b2d03e3a0499c065730c96b28Anders Carlsson // Structures with either a non-trivial destructor or a non-trivial 569a887423cf580e19b2d03e3a0499c065730c96b28Anders Carlsson // copy constructor are always indirect. 570a887423cf580e19b2d03e3a0499c065730c96b28Anders Carlsson if (hasNonTrivialDestructorOrCopyConstructor(RT)) 571a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner return getIndirectResult(Ty, /*ByVal=*/false); 572dc6d574155072bfb35a7a29b94ef3afa0d40fb5aDaniel Dunbar 573c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (RT->getDecl()->hasFlexibleArrayMember()) 574a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner return getIndirectResult(Ty); 575a887423cf580e19b2d03e3a0499c065730c96b28Anders Carlsson } 576c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 577c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Ignore empty structs. 578a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner if (Ty->isStructureType() && getContext().getTypeSize(Ty) == 0) 579c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return ABIArgInfo::getIgnore(); 580c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 58153012f447145bfd5e3a759f069a2bdf2b6705708Daniel Dunbar // Expand small (<= 128-bit) record types when we know that the stack layout 58253012f447145bfd5e3a759f069a2bdf2b6705708Daniel Dunbar // of those arguments will match the struct. This is important because the 58353012f447145bfd5e3a759f069a2bdf2b6705708Daniel Dunbar // LLVM backend isn't smart enough to remove byval, which inhibits many 58453012f447145bfd5e3a759f069a2bdf2b6705708Daniel Dunbar // optimizations. 585a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner if (getContext().getTypeSize(Ty) <= 4*32 && 586a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner canExpandIndirectArgument(Ty, getContext())) 58753012f447145bfd5e3a759f069a2bdf2b6705708Daniel Dunbar return ABIArgInfo::getExpand(); 588c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 589a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner return getIndirectResult(Ty); 5908bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer } 5918bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 592a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner if (const EnumType *EnumTy = Ty->getAs<EnumType>()) 593a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner Ty = EnumTy->getDecl()->getIntegerType(); 594aa74a1e49f7c4b89539830290f76fe2c3e97187fDouglas Gregor 595a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner return (Ty->isPromotableIntegerType() ? 596a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner ABIArgInfo::getExtend() : ABIArgInfo::getDirect()); 597c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 598c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 599c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikovllvm::Value *X86_32ABIInfo::EmitVAArg(llvm::Value *VAListAddr, QualType Ty, 600c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CodeGenFunction &CGF) const { 6013c0ef8cc0dc246bd3083e8cdd63005e8873d36d2Benjamin Kramer const llvm::Type *BP = llvm::Type::getInt8PtrTy(CGF.getLLVMContext()); 60296e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson const llvm::Type *BPP = llvm::PointerType::getUnqual(BP); 603c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 604c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CGBuilderTy &Builder = CGF.Builder; 605c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Value *VAListAddrAsBPP = Builder.CreateBitCast(VAListAddr, BPP, 606c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov "ap"); 607c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Value *Addr = Builder.CreateLoad(VAListAddrAsBPP, "ap.cur"); 608c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Type *PTy = 60996e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(CGF.ConvertType(Ty)); 610c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Value *AddrTyped = Builder.CreateBitCast(Addr, PTy); 611c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 612c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov uint64_t Offset = 613c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::RoundUpToAlignment(CGF.getContext().getTypeSize(Ty) / 8, 4); 614c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Value *NextAddr = 61577b89b87c3b9220fea1bc80f6d6598d2003cc8a8Chris Lattner Builder.CreateGEP(Addr, llvm::ConstantInt::get(CGF.Int32Ty, Offset), 616c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov "ap.next"); 617c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Builder.CreateStore(NextAddr, VAListAddrAsBPP); 618c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 619c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return AddrTyped; 620c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 621c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 62274f7293eb30bf77355c20a3c2cad7b67d8ce7388Charles Davisvoid X86_32TargetCodeGenInfo::SetTargetAttributes(const Decl *D, 62374f7293eb30bf77355c20a3c2cad7b67d8ce7388Charles Davis llvm::GlobalValue *GV, 62474f7293eb30bf77355c20a3c2cad7b67d8ce7388Charles Davis CodeGen::CodeGenModule &CGM) const { 62574f7293eb30bf77355c20a3c2cad7b67d8ce7388Charles Davis if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 62674f7293eb30bf77355c20a3c2cad7b67d8ce7388Charles Davis if (FD->hasAttr<X86ForceAlignArgPointerAttr>()) { 62774f7293eb30bf77355c20a3c2cad7b67d8ce7388Charles Davis // Get the LLVM function. 62874f7293eb30bf77355c20a3c2cad7b67d8ce7388Charles Davis llvm::Function *Fn = cast<llvm::Function>(GV); 62974f7293eb30bf77355c20a3c2cad7b67d8ce7388Charles Davis 63074f7293eb30bf77355c20a3c2cad7b67d8ce7388Charles Davis // Now add the 'alignstack' attribute with a value of 16. 63174f7293eb30bf77355c20a3c2cad7b67d8ce7388Charles Davis Fn->addFnAttr(llvm::Attribute::constructStackAlignmentFromInt(16)); 63274f7293eb30bf77355c20a3c2cad7b67d8ce7388Charles Davis } 63374f7293eb30bf77355c20a3c2cad7b67d8ce7388Charles Davis } 63474f7293eb30bf77355c20a3c2cad7b67d8ce7388Charles Davis} 63574f7293eb30bf77355c20a3c2cad7b67d8ce7388Charles Davis 6366374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCallbool X86_32TargetCodeGenInfo::initDwarfEHRegSizeTable( 6376374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall CodeGen::CodeGenFunction &CGF, 6386374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall llvm::Value *Address) const { 6396374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall CodeGen::CGBuilderTy &Builder = CGF.Builder; 6406374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall llvm::LLVMContext &Context = CGF.getLLVMContext(); 6416374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall 6426374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall const llvm::IntegerType *i8 = llvm::Type::getInt8Ty(Context); 6436374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall llvm::Value *Four8 = llvm::ConstantInt::get(i8, 4); 6448bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 6456374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall // 0-7 are the eight integer registers; the order is different 6466374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall // on Darwin (for EH), but the range is the same. 6476374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall // 8 is %eip. 648aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall AssignToArrayRange(Builder, Address, Four8, 0, 8); 6496374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall 6506374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall if (CGF.CGM.isTargetDarwin()) { 6516374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall // 12-16 are st(0..4). Not sure why we stop at 4. 6526374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall // These have size 16, which is sizeof(long double) on 6536374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall // platforms with 8-byte alignment for that type. 6546374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall llvm::Value *Sixteen8 = llvm::ConstantInt::get(i8, 16); 655aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall AssignToArrayRange(Builder, Address, Sixteen8, 12, 16); 6568bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 6576374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall } else { 6586374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall // 9 is %eflags, which doesn't get a size on Darwin for some 6596374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall // reason. 6606374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall Builder.CreateStore(Four8, Builder.CreateConstInBoundsGEP1_32(Address, 9)); 6616374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall 6626374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall // 11-16 are st(0..5). Not sure why we stop at 5. 6636374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall // These have size 12, which is sizeof(long double) on 6646374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall // platforms with 4-byte alignment for that type. 6656374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall llvm::Value *Twelve8 = llvm::ConstantInt::get(i8, 12); 666aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall AssignToArrayRange(Builder, Address, Twelve8, 11, 16); 667aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall } 6686374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall 6696374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall return false; 6706374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall} 6716374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall 672dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner//===----------------------------------------------------------------------===// 673dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner// X86-64 ABI Implementation 674dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner//===----------------------------------------------------------------------===// 675dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner 676dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner 677c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikovnamespace { 678c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov/// X86_64ABIInfo - The X86_64 ABI information. 679c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikovclass X86_64ABIInfo : public ABIInfo { 680c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov enum Class { 681c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Integer = 0, 682c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov SSE, 683c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov SSEUp, 684c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov X87, 685c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov X87Up, 686c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov ComplexX87, 687c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov NoClass, 688c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Memory 689c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov }; 690c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 691c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// merge - Implement the X86_64 ABI merging algorithm. 692c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// 693c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// Merge an accumulating classification \arg Accum with a field 694c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// classification \arg Field. 695c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// 696c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// \param Accum - The accumulating classification. This should 697c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// always be either NoClass or the result of a previous merge 698c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// call. In addition, this should never be Memory (the caller 699c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// should just return Memory for the aggregate). 7001090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner static Class merge(Class Accum, Class Field); 701c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 702c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// classify - Determine the x86_64 register classes in which the 703c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// given type T should be passed. 704c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// 705c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// \param Lo - The classification for the parts of the type 706c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// residing in the low word of the containing object. 707c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// 708c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// \param Hi - The classification for the parts of the type 709c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// residing in the high word of the containing object. 710c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// 711c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// \param OffsetBase - The bit offset of this type in the 712c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// containing object. Some parameters are classified different 713c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// depending on whether they straddle an eightbyte boundary. 714c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// 715c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// If a word is unused its result will be NoClass; if a type should 716c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// be passed in Memory then at least the classification of \arg Lo 717c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// will be Memory. 718c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// 719c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// The \arg Lo class will be NoClass iff the argument is ignored. 720c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// 721c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// If the \arg Lo class is ComplexX87, then the \arg Hi class will 722c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// also be ComplexX87. 7239c254f0415bef9a0bafe5b5026ddb54b727597b1Chris Lattner void classify(QualType T, uint64_t OffsetBase, Class &Lo, Class &Hi) const; 724c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 7250f408f5242522cbede304472e17931357c1b573dChris Lattner const llvm::Type *Get16ByteVectorType(QualType Ty) const; 726603519d269d48dca99927f0ad65e92099bd76161Chris Lattner const llvm::Type *GetSSETypeAtOffset(const llvm::Type *IRType, 727f47c944b5710a545d564b4d4b641a2f8bac96af3Chris Lattner unsigned IROffset, QualType SourceTy, 728f47c944b5710a545d564b4d4b641a2f8bac96af3Chris Lattner unsigned SourceOffset) const; 7290d2656d77053cc2ed6f3a3acdf12d67807c7f3a2Chris Lattner const llvm::Type *GetINTEGERTypeAtOffset(const llvm::Type *IRType, 7300d2656d77053cc2ed6f3a3acdf12d67807c7f3a2Chris Lattner unsigned IROffset, QualType SourceTy, 7310d2656d77053cc2ed6f3a3acdf12d67807c7f3a2Chris Lattner unsigned SourceOffset) const; 7328bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 733c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// getIndirectResult - Give a source type \arg Ty, return a suitable result 73446c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar /// such that the argument will be returned in memory. 7359c254f0415bef9a0bafe5b5026ddb54b727597b1Chris Lattner ABIArgInfo getIndirectReturnResult(QualType Ty) const; 73646c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar 73746c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar /// getIndirectResult - Give a source type \arg Ty, return a suitable result 738c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov /// such that the argument will be passed in memory. 7399c254f0415bef9a0bafe5b5026ddb54b727597b1Chris Lattner ABIArgInfo getIndirectResult(QualType Ty) const; 740c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 741a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner ABIArgInfo classifyReturnType(QualType RetTy) const; 742c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 7435868ca2eb7f00d815f62e46f5a171eb6e5f91b5bChris Lattner ABIArgInfo classifyArgumentType(QualType Ty, unsigned &neededInt, 7445868ca2eb7f00d815f62e46f5a171eb6e5f91b5bChris Lattner unsigned &neededSSE) const; 745c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 746c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikovpublic: 747ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner X86_64ABIInfo(CodeGen::CodeGenTypes &CGT) : ABIInfo(CGT) {} 7489c254f0415bef9a0bafe5b5026ddb54b727597b1Chris Lattner 749ee5dcd064a811edc90f6c1fb31a837b6c961fed7Chris Lattner virtual void computeInfo(CGFunctionInfo &FI) const; 750c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 751c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov virtual llvm::Value *EmitVAArg(llvm::Value *VAListAddr, QualType Ty, 752c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CodeGenFunction &CGF) const; 753c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov}; 75482d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov 75582d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikovclass X86_64TargetCodeGenInfo : public TargetCodeGenInfo { 75682d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikovpublic: 757ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner X86_64TargetCodeGenInfo(CodeGen::CodeGenTypes &CGT) 758ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner : TargetCodeGenInfo(new X86_64ABIInfo(CGT)) {} 7596374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall 7606374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall int getDwarfEHStackPointer(CodeGen::CodeGenModule &CGM) const { 7616374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall return 7; 7626374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall } 7636374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall 7646374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall bool initDwarfEHRegSizeTable(CodeGen::CodeGenFunction &CGF, 7656374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall llvm::Value *Address) const { 7666374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall CodeGen::CGBuilderTy &Builder = CGF.Builder; 7676374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall llvm::LLVMContext &Context = CGF.getLLVMContext(); 7686374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall 7696374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall const llvm::IntegerType *i8 = llvm::Type::getInt8Ty(Context); 7706374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall llvm::Value *Eight8 = llvm::ConstantInt::get(i8, 8); 7718bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 772aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall // 0-15 are the 16 integer registers. 773aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall // 16 is %rip. 774aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall AssignToArrayRange(Builder, Address, Eight8, 0, 16); 7756374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall 7766374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall return false; 7776374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall } 77882d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov}; 77982d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov 780c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 781c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 7821090a9ba0902380dbd97d0a500daa4c373712df9Chris LattnerX86_64ABIInfo::Class X86_64ABIInfo::merge(Class Accum, Class Field) { 783c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.2.3p2: Rule 4. Each field of an object is 784c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // classified recursively so that always two fields are 785c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // considered. The resulting class is calculated according to 786c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // the classes of the fields in the eightbyte: 787c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // 788c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // (a) If both classes are equal, this is the resulting class. 789c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // 790c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // (b) If one of the classes is NO_CLASS, the resulting class is 791c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // the other class. 792c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // 793c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // (c) If one of the classes is MEMORY, the result is the MEMORY 794c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // class. 795c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // 796c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // (d) If one of the classes is INTEGER, the result is the 797c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // INTEGER. 798c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // 799c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // (e) If one of the classes is X87, X87UP, COMPLEX_X87 class, 800c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // MEMORY is used as class. 801c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // 802c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // (f) Otherwise class SSE is used. 803c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 804c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Accum should never be memory (we should have returned) or 805c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // ComplexX87 (because this cannot be passed in a structure). 806c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov assert((Accum != Memory && Accum != ComplexX87) && 807c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov "Invalid accumulated classification during merge."); 808c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (Accum == Field || Field == NoClass) 809c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return Accum; 8101090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner if (Field == Memory) 811c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return Memory; 8121090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner if (Accum == NoClass) 813c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return Field; 8141090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner if (Accum == Integer || Field == Integer) 815c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return Integer; 8161090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner if (Field == X87 || Field == X87Up || Field == ComplexX87 || 8171090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner Accum == X87 || Accum == X87Up) 818c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return Memory; 8191090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner return SSE; 820c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 821c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 822bcaedaed309ce453a992fdeef4a4c908cc7d9dfbChris Lattnervoid X86_64ABIInfo::classify(QualType Ty, uint64_t OffsetBase, 823c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Class &Lo, Class &Hi) const { 824c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // FIXME: This code can be simplified by introducing a simple value class for 825c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Class pairs with appropriate constructor methods for the various 826c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // situations. 827c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 828c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // FIXME: Some of the split computations are wrong; unaligned vectors 829c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // shouldn't be passed in registers for example, so there is no chance they 830c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // can straddle an eightbyte. Verify & simplify. 831c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 832c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Lo = Hi = NoClass; 833c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 834c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Class &Current = OffsetBase < 64 ? Lo : Hi; 835c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Current = Memory; 836c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 837183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall if (const BuiltinType *BT = Ty->getAs<BuiltinType>()) { 838c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov BuiltinType::Kind k = BT->getKind(); 839c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 840c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (k == BuiltinType::Void) { 841c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Current = NoClass; 842c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } else if (k == BuiltinType::Int128 || k == BuiltinType::UInt128) { 843c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Lo = Integer; 844c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Hi = Integer; 845c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } else if (k >= BuiltinType::Bool && k <= BuiltinType::LongLong) { 846c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Current = Integer; 847c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } else if (k == BuiltinType::Float || k == BuiltinType::Double) { 848c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Current = SSE; 849c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } else if (k == BuiltinType::LongDouble) { 850c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Lo = X87; 851c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Hi = X87Up; 852c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 853c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // FIXME: _Decimal32 and _Decimal64 are SSE. 854c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // FIXME: _float128 and _Decimal128 are (SSE, SSEUp). 8551090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner return; 8561090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner } 8578bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 8581090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner if (const EnumType *ET = Ty->getAs<EnumType>()) { 859c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Classify the underlying integer type. 8609c254f0415bef9a0bafe5b5026ddb54b727597b1Chris Lattner classify(ET->getDecl()->getIntegerType(), OffsetBase, Lo, Hi); 8611090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner return; 8621090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner } 8638bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 8641090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner if (Ty->hasPointerRepresentation()) { 865c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Current = Integer; 8661090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner return; 8671090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner } 8688bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 8691090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner if (Ty->isMemberPointerType()) { 87067d438d39a1cc37c372a2684dc354f58d0169bb1Daniel Dunbar if (Ty->isMemberFunctionPointerType()) 87167d438d39a1cc37c372a2684dc354f58d0169bb1Daniel Dunbar Lo = Hi = Integer; 87267d438d39a1cc37c372a2684dc354f58d0169bb1Daniel Dunbar else 87367d438d39a1cc37c372a2684dc354f58d0169bb1Daniel Dunbar Current = Integer; 8741090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner return; 8751090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner } 8768bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 8771090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner if (const VectorType *VT = Ty->getAs<VectorType>()) { 878ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner uint64_t Size = getContext().getTypeSize(VT); 879c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (Size == 32) { 880c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // gcc passes all <4 x char>, <2 x short>, <1 x int>, <1 x 881c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // float> as integer. 882c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Current = Integer; 883c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 884c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // If this type crosses an eightbyte boundary, it should be 885c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // split. 886c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov uint64_t EB_Real = (OffsetBase) / 64; 887c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov uint64_t EB_Imag = (OffsetBase + Size - 1) / 64; 888c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (EB_Real != EB_Imag) 889c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Hi = Lo; 890c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } else if (Size == 64) { 891c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // gcc passes <1 x double> in memory. :( 892c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (VT->getElementType()->isSpecificBuiltinType(BuiltinType::Double)) 893c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return; 894c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 895c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // gcc passes <1 x long long> as INTEGER. 896473f8e723be93d84bd5fd15b094f4184802d4676Chris Lattner if (VT->getElementType()->isSpecificBuiltinType(BuiltinType::LongLong) || 8970fefa4175b0c9101564946f6a975ee9946c16d4bChris Lattner VT->getElementType()->isSpecificBuiltinType(BuiltinType::ULongLong) || 8980fefa4175b0c9101564946f6a975ee9946c16d4bChris Lattner VT->getElementType()->isSpecificBuiltinType(BuiltinType::Long) || 8990fefa4175b0c9101564946f6a975ee9946c16d4bChris Lattner VT->getElementType()->isSpecificBuiltinType(BuiltinType::ULong)) 900c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Current = Integer; 901c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov else 902c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Current = SSE; 903c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 904c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // If this type crosses an eightbyte boundary, it should be 905c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // split. 906c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (OffsetBase && OffsetBase != 64) 907c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Hi = Lo; 908c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } else if (Size == 128) { 909c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Lo = SSE; 910c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Hi = SSEUp; 911c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 9121090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner return; 9131090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner } 9148bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 9151090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner if (const ComplexType *CT = Ty->getAs<ComplexType>()) { 916ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner QualType ET = getContext().getCanonicalType(CT->getElementType()); 917c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 918ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner uint64_t Size = getContext().getTypeSize(Ty); 9192ade35e2cfd554e49d35a52047cea98a82787af9Douglas Gregor if (ET->isIntegralOrEnumerationType()) { 920c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (Size <= 64) 921c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Current = Integer; 922c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov else if (Size <= 128) 923c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Lo = Hi = Integer; 924ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner } else if (ET == getContext().FloatTy) 925c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Current = SSE; 926ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner else if (ET == getContext().DoubleTy) 927c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Lo = Hi = SSE; 928ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner else if (ET == getContext().LongDoubleTy) 929c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Current = ComplexX87; 930c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 931c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // If this complex type crosses an eightbyte boundary then it 932c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // should be split. 933c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov uint64_t EB_Real = (OffsetBase) / 64; 934ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner uint64_t EB_Imag = (OffsetBase + getContext().getTypeSize(ET)) / 64; 935c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (Hi == NoClass && EB_Real != EB_Imag) 936c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Hi = Lo; 9378bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 9381090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner return; 9391090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner } 9408bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 941ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner if (const ConstantArrayType *AT = getContext().getAsConstantArrayType(Ty)) { 942c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Arrays are treated like structures. 943c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 944ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner uint64_t Size = getContext().getTypeSize(Ty); 945c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 946c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.2.3p2: Rule 1. If the size of an object is larger 947c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // than two eightbytes, ..., it has class MEMORY. 948c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (Size > 128) 949c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return; 950c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 951c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.2.3p2: Rule 1. If ..., or it contains unaligned 952c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // fields, it has class MEMORY. 953c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // 954c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Only need to check alignment of array base. 955ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner if (OffsetBase % getContext().getTypeAlign(AT->getElementType())) 956c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return; 957c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 958c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Otherwise implement simplified merge. We could be smarter about 959c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // this, but it isn't worth it and would be harder to verify. 960c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Current = NoClass; 961ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner uint64_t EltSize = getContext().getTypeSize(AT->getElementType()); 962c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov uint64_t ArraySize = AT->getSize().getZExtValue(); 963c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov for (uint64_t i=0, Offset=OffsetBase; i<ArraySize; ++i, Offset += EltSize) { 964c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Class FieldLo, FieldHi; 9659c254f0415bef9a0bafe5b5026ddb54b727597b1Chris Lattner classify(AT->getElementType(), Offset, FieldLo, FieldHi); 966c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Lo = merge(Lo, FieldLo); 967c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Hi = merge(Hi, FieldHi); 968c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (Lo == Memory || Hi == Memory) 969c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov break; 970c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 971c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 972c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Do post merger cleanup (see below). Only case we worry about is Memory. 973c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (Hi == Memory) 974c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Lo = Memory; 975c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov assert((Hi != SSEUp || Lo == SSE) && "Invalid SSEUp array classification."); 9761090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner return; 9771090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner } 9788bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 9791090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner if (const RecordType *RT = Ty->getAs<RecordType>()) { 980ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner uint64_t Size = getContext().getTypeSize(Ty); 981c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 982c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.2.3p2: Rule 1. If the size of an object is larger 983c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // than two eightbytes, ..., it has class MEMORY. 984c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (Size > 128) 985c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return; 986c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 9870a8f847e97f40cce51dc69051b964732333dc028Anders Carlsson // AMD64-ABI 3.2.3p2: Rule 2. If a C++ object has either a non-trivial 9880a8f847e97f40cce51dc69051b964732333dc028Anders Carlsson // copy constructor or a non-trivial destructor, it is passed by invisible 9890a8f847e97f40cce51dc69051b964732333dc028Anders Carlsson // reference. 9900a8f847e97f40cce51dc69051b964732333dc028Anders Carlsson if (hasNonTrivialDestructorOrCopyConstructor(RT)) 9910a8f847e97f40cce51dc69051b964732333dc028Anders Carlsson return; 992ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar 993c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov const RecordDecl *RD = RT->getDecl(); 994c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 995c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Assume variable sized types are passed in memory. 996c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (RD->hasFlexibleArrayMember()) 997c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return; 998c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 999ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner const ASTRecordLayout &Layout = getContext().getASTRecordLayout(RD); 1000c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1001c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Reset Lo class, this will be recomputed. 1002c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Current = NoClass; 1003ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar 1004ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar // If this is a C++ record, classify the bases first. 1005ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar if (const CXXRecordDecl *CXXRD = dyn_cast<CXXRecordDecl>(RD)) { 1006ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar for (CXXRecordDecl::base_class_const_iterator i = CXXRD->bases_begin(), 1007ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar e = CXXRD->bases_end(); i != e; ++i) { 1008ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar assert(!i->isVirtual() && !i->getType()->isDependentType() && 1009ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar "Unexpected base class!"); 1010ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar const CXXRecordDecl *Base = 1011ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar cast<CXXRecordDecl>(i->getType()->getAs<RecordType>()->getDecl()); 1012ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar 1013ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar // Classify this field. 1014ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar // 1015ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar // AMD64-ABI 3.2.3p2: Rule 3. If the size of the aggregate exceeds a 1016ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar // single eightbyte, each is classified separately. Each eightbyte gets 1017ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar // initialized to class NO_CLASS. 1018ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar Class FieldLo, FieldHi; 1019ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar uint64_t Offset = OffsetBase + Layout.getBaseClassOffset(Base); 10209c254f0415bef9a0bafe5b5026ddb54b727597b1Chris Lattner classify(i->getType(), Offset, FieldLo, FieldHi); 1021ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar Lo = merge(Lo, FieldLo); 1022ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar Hi = merge(Hi, FieldHi); 1023ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar if (Lo == Memory || Hi == Memory) 1024ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar break; 1025ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar } 1026ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar } 1027ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar 1028ce9f423d2ce4b8699d9f6c7623053f645ac4dc6dDaniel Dunbar // Classify the fields one at a time, merging the results. 1029c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov unsigned idx = 0; 103017945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis for (RecordDecl::field_iterator i = RD->field_begin(), e = RD->field_end(); 103117945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis i != e; ++i, ++idx) { 1032c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov uint64_t Offset = OffsetBase + Layout.getFieldOffset(idx); 1033c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov bool BitField = i->isBitField(); 1034c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1035c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.2.3p2: Rule 1. If ..., or it contains unaligned 1036c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // fields, it has class MEMORY. 1037c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // 1038c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Note, skip this test for bit-fields, see below. 1039ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner if (!BitField && Offset % getContext().getTypeAlign(i->getType())) { 1040c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Lo = Memory; 1041c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return; 1042c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 1043c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1044c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Classify this field. 1045c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // 1046c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.2.3p2: Rule 3. If the size of the aggregate 1047c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // exceeds a single eightbyte, each is classified 1048c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // separately. Each eightbyte gets initialized to class 1049c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // NO_CLASS. 1050c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Class FieldLo, FieldHi; 1051c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1052c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Bit-fields require special handling, they do not force the 1053c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // structure to be passed in memory even if unaligned, and 1054c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // therefore they can straddle an eightbyte. 1055c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (BitField) { 1056c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Ignore padding bit-fields. 1057c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (i->isUnnamedBitfield()) 1058c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov continue; 1059c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1060c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov uint64_t Offset = OffsetBase + Layout.getFieldOffset(idx); 1061ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner uint64_t Size = 1062ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner i->getBitWidth()->EvaluateAsInt(getContext()).getZExtValue(); 1063c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1064c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov uint64_t EB_Lo = Offset / 64; 1065c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov uint64_t EB_Hi = (Offset + Size - 1) / 64; 1066c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov FieldLo = FieldHi = NoClass; 1067c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (EB_Lo) { 1068c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov assert(EB_Hi == EB_Lo && "Invalid classification, type > 16 bytes."); 1069c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov FieldLo = NoClass; 1070c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov FieldHi = Integer; 1071c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } else { 1072c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov FieldLo = Integer; 1073c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov FieldHi = EB_Hi ? Integer : NoClass; 1074c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 1075c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } else 10769c254f0415bef9a0bafe5b5026ddb54b727597b1Chris Lattner classify(i->getType(), Offset, FieldLo, FieldHi); 1077c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Lo = merge(Lo, FieldLo); 1078c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Hi = merge(Hi, FieldHi); 1079c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (Lo == Memory || Hi == Memory) 1080c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov break; 1081c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 1082c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1083c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.2.3p2: Rule 5. Then a post merger cleanup is done: 1084c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // 1085c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // (a) If one of the classes is MEMORY, the whole argument is 1086c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // passed in memory. 1087c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // 1088c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // (b) If SSEUP is not preceeded by SSE, it is converted to SSE. 1089c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1090c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // The first of these conditions is guaranteed by how we implement 1091c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // the merge (just bail). 1092c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // 1093c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // The second condition occurs in the case of unions; for example 1094c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // union { _Complex double; unsigned; }. 1095c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (Hi == Memory) 1096c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Lo = Memory; 1097c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (Hi == SSEUp && Lo != SSE) 1098c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Hi = SSE; 1099c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 1100c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 1101c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 11029c254f0415bef9a0bafe5b5026ddb54b727597b1Chris LattnerABIArgInfo X86_64ABIInfo::getIndirectReturnResult(QualType Ty) const { 110346c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar // If this is a scalar LLVM value then assume LLVM will pass it in the right 110446c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar // place naturally. 1105d608cdb7c044365cf4e8764ade1e11e99c176078John McCall if (!isAggregateTypeForABI(Ty)) { 110646c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar // Treat an enum type as its underlying type. 110746c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar if (const EnumType *EnumTy = Ty->getAs<EnumType>()) 110846c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar Ty = EnumTy->getDecl()->getIntegerType(); 110946c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar 111046c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar return (Ty->isPromotableIntegerType() ? 111146c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar ABIArgInfo::getExtend() : ABIArgInfo::getDirect()); 111246c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar } 111346c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar 111446c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar return ABIArgInfo::getIndirect(0); 111546c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar} 111646c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar 11179c254f0415bef9a0bafe5b5026ddb54b727597b1Chris LattnerABIArgInfo X86_64ABIInfo::getIndirectResult(QualType Ty) const { 1118c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // If this is a scalar LLVM value then assume LLVM will pass it in the right 1119c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // place naturally. 1120d608cdb7c044365cf4e8764ade1e11e99c176078John McCall if (!isAggregateTypeForABI(Ty)) { 1121aa74a1e49f7c4b89539830290f76fe2c3e97187fDouglas Gregor // Treat an enum type as its underlying type. 1122aa74a1e49f7c4b89539830290f76fe2c3e97187fDouglas Gregor if (const EnumType *EnumTy = Ty->getAs<EnumType>()) 1123aa74a1e49f7c4b89539830290f76fe2c3e97187fDouglas Gregor Ty = EnumTy->getDecl()->getIntegerType(); 1124aa74a1e49f7c4b89539830290f76fe2c3e97187fDouglas Gregor 1125cc6fa88666ca2f287df4a600eb31a4087bab9c13Anton Korobeynikov return (Ty->isPromotableIntegerType() ? 1126cc6fa88666ca2f287df4a600eb31a4087bab9c13Anton Korobeynikov ABIArgInfo::getExtend() : ABIArgInfo::getDirect()); 1127aa74a1e49f7c4b89539830290f76fe2c3e97187fDouglas Gregor } 1128c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 112946c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar if (isRecordWithNonTrivialDestructorOrCopyConstructor(Ty)) 113046c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar return ABIArgInfo::getIndirect(0, /*ByVal=*/false); 11310a8f847e97f40cce51dc69051b964732333dc028Anders Carlsson 113246c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar // Compute the byval alignment. We trust the back-end to honor the 113346c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar // minimum ABI alignment for byval, to make cleaner IR. 113446c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar const unsigned MinABIAlign = 8; 1135ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner unsigned Align = getContext().getTypeAlign(Ty) / 8; 113646c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar if (Align > MinABIAlign) 113746c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar return ABIArgInfo::getIndirect(Align); 113846c54fb8ec45765a475b7b709b9aee7f94c490c2Daniel Dunbar return ABIArgInfo::getIndirect(0); 1139c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 1140c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 11410f408f5242522cbede304472e17931357c1b573dChris Lattner/// Get16ByteVectorType - The ABI specifies that a value should be passed in an 11420f408f5242522cbede304472e17931357c1b573dChris Lattner/// full vector XMM register. Pick an LLVM IR type that will be passed as a 11430f408f5242522cbede304472e17931357c1b573dChris Lattner/// vector register. 11440f408f5242522cbede304472e17931357c1b573dChris Lattnerconst llvm::Type *X86_64ABIInfo::Get16ByteVectorType(QualType Ty) const { 114515842bd05bd6d3b7450385ac8f73aaee5f807e19Chris Lattner const llvm::Type *IRType = CGT.ConvertTypeRecursive(Ty); 11468bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 114715842bd05bd6d3b7450385ac8f73aaee5f807e19Chris Lattner // Wrapper structs that just contain vectors are passed just like vectors, 114815842bd05bd6d3b7450385ac8f73aaee5f807e19Chris Lattner // strip them off if present. 114915842bd05bd6d3b7450385ac8f73aaee5f807e19Chris Lattner const llvm::StructType *STy = dyn_cast<llvm::StructType>(IRType); 115015842bd05bd6d3b7450385ac8f73aaee5f807e19Chris Lattner while (STy && STy->getNumElements() == 1) { 115115842bd05bd6d3b7450385ac8f73aaee5f807e19Chris Lattner IRType = STy->getElementType(0); 115215842bd05bd6d3b7450385ac8f73aaee5f807e19Chris Lattner STy = dyn_cast<llvm::StructType>(IRType); 115315842bd05bd6d3b7450385ac8f73aaee5f807e19Chris Lattner } 11548bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 11550f408f5242522cbede304472e17931357c1b573dChris Lattner // If the preferred type is a 16-byte vector, prefer to pass it. 115615842bd05bd6d3b7450385ac8f73aaee5f807e19Chris Lattner if (const llvm::VectorType *VT = dyn_cast<llvm::VectorType>(IRType)){ 11570f408f5242522cbede304472e17931357c1b573dChris Lattner const llvm::Type *EltTy = VT->getElementType(); 11580f408f5242522cbede304472e17931357c1b573dChris Lattner if (VT->getBitWidth() == 128 && 11590f408f5242522cbede304472e17931357c1b573dChris Lattner (EltTy->isFloatTy() || EltTy->isDoubleTy() || 11600f408f5242522cbede304472e17931357c1b573dChris Lattner EltTy->isIntegerTy(8) || EltTy->isIntegerTy(16) || 11610f408f5242522cbede304472e17931357c1b573dChris Lattner EltTy->isIntegerTy(32) || EltTy->isIntegerTy(64) || 11620f408f5242522cbede304472e17931357c1b573dChris Lattner EltTy->isIntegerTy(128))) 11630f408f5242522cbede304472e17931357c1b573dChris Lattner return VT; 11640f408f5242522cbede304472e17931357c1b573dChris Lattner } 11658bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 11660f408f5242522cbede304472e17931357c1b573dChris Lattner return llvm::VectorType::get(llvm::Type::getDoubleTy(getVMContext()), 2); 11670f408f5242522cbede304472e17931357c1b573dChris Lattner} 11680f408f5242522cbede304472e17931357c1b573dChris Lattner 1169e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner/// BitsContainNoUserData - Return true if the specified [start,end) bit range 1170e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner/// is known to either be off the end of the specified type or being in 1171e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner/// alignment padding. The user type specified is known to be at most 128 bits 1172e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner/// in size, and have passed through X86_64ABIInfo::classify with a successful 1173e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner/// classification that put one of the two halves in the INTEGER class. 1174e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner/// 1175e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner/// It is conservatively correct to return false. 1176e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattnerstatic bool BitsContainNoUserData(QualType Ty, unsigned StartBit, 1177e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner unsigned EndBit, ASTContext &Context) { 1178e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner // If the bytes being queried are off the end of the type, there is no user 1179e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner // data hiding here. This handles analysis of builtins, vectors and other 1180e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner // types that don't contain interesting padding. 1181e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner unsigned TySize = (unsigned)Context.getTypeSize(Ty); 1182e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner if (TySize <= StartBit) 1183e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner return true; 1184e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner 1185021c3a349d4f55cc2c7970268758bcf37b924493Chris Lattner if (const ConstantArrayType *AT = Context.getAsConstantArrayType(Ty)) { 1186021c3a349d4f55cc2c7970268758bcf37b924493Chris Lattner unsigned EltSize = (unsigned)Context.getTypeSize(AT->getElementType()); 1187021c3a349d4f55cc2c7970268758bcf37b924493Chris Lattner unsigned NumElts = (unsigned)AT->getSize().getZExtValue(); 1188021c3a349d4f55cc2c7970268758bcf37b924493Chris Lattner 1189021c3a349d4f55cc2c7970268758bcf37b924493Chris Lattner // Check each element to see if the element overlaps with the queried range. 1190021c3a349d4f55cc2c7970268758bcf37b924493Chris Lattner for (unsigned i = 0; i != NumElts; ++i) { 1191021c3a349d4f55cc2c7970268758bcf37b924493Chris Lattner // If the element is after the span we care about, then we're done.. 1192021c3a349d4f55cc2c7970268758bcf37b924493Chris Lattner unsigned EltOffset = i*EltSize; 1193021c3a349d4f55cc2c7970268758bcf37b924493Chris Lattner if (EltOffset >= EndBit) break; 11948bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1195021c3a349d4f55cc2c7970268758bcf37b924493Chris Lattner unsigned EltStart = EltOffset < StartBit ? StartBit-EltOffset :0; 1196021c3a349d4f55cc2c7970268758bcf37b924493Chris Lattner if (!BitsContainNoUserData(AT->getElementType(), EltStart, 1197021c3a349d4f55cc2c7970268758bcf37b924493Chris Lattner EndBit-EltOffset, Context)) 1198021c3a349d4f55cc2c7970268758bcf37b924493Chris Lattner return false; 1199021c3a349d4f55cc2c7970268758bcf37b924493Chris Lattner } 1200021c3a349d4f55cc2c7970268758bcf37b924493Chris Lattner // If it overlaps no elements, then it is safe to process as padding. 1201021c3a349d4f55cc2c7970268758bcf37b924493Chris Lattner return true; 1202021c3a349d4f55cc2c7970268758bcf37b924493Chris Lattner } 12038bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1204e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner if (const RecordType *RT = Ty->getAs<RecordType>()) { 1205e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner const RecordDecl *RD = RT->getDecl(); 1206e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner const ASTRecordLayout &Layout = Context.getASTRecordLayout(RD); 12078bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1208e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner // If this is a C++ record, check the bases first. 1209e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner if (const CXXRecordDecl *CXXRD = dyn_cast<CXXRecordDecl>(RD)) { 1210e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner for (CXXRecordDecl::base_class_const_iterator i = CXXRD->bases_begin(), 1211e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner e = CXXRD->bases_end(); i != e; ++i) { 1212e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner assert(!i->isVirtual() && !i->getType()->isDependentType() && 1213e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner "Unexpected base class!"); 1214e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner const CXXRecordDecl *Base = 1215e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner cast<CXXRecordDecl>(i->getType()->getAs<RecordType>()->getDecl()); 12168bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1217e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner // If the base is after the span we care about, ignore it. 1218e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner unsigned BaseOffset = (unsigned)Layout.getBaseClassOffset(Base); 1219e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner if (BaseOffset >= EndBit) continue; 12208bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1221e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner unsigned BaseStart = BaseOffset < StartBit ? StartBit-BaseOffset :0; 1222e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner if (!BitsContainNoUserData(i->getType(), BaseStart, 1223e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner EndBit-BaseOffset, Context)) 1224e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner return false; 1225e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner } 1226e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner } 12278bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1228e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner // Verify that no field has data that overlaps the region of interest. Yes 1229e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner // this could be sped up a lot by being smarter about queried fields, 1230e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner // however we're only looking at structs up to 16 bytes, so we don't care 1231e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner // much. 1232e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner unsigned idx = 0; 1233e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner for (RecordDecl::field_iterator i = RD->field_begin(), e = RD->field_end(); 1234e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner i != e; ++i, ++idx) { 1235e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner unsigned FieldOffset = (unsigned)Layout.getFieldOffset(idx); 12368bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1237e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner // If we found a field after the region we care about, then we're done. 1238e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner if (FieldOffset >= EndBit) break; 1239e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner 1240e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner unsigned FieldStart = FieldOffset < StartBit ? StartBit-FieldOffset :0; 1241e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner if (!BitsContainNoUserData(i->getType(), FieldStart, EndBit-FieldOffset, 1242e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner Context)) 1243e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner return false; 1244e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner } 12458bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1246e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner // If nothing in this record overlapped the area of interest, then we're 1247e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner // clean. 1248e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner return true; 1249e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner } 12508bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1251e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner return false; 1252e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner} 1253e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner 12540b3620066bfbb33004bed1816c851a923b9301afChris Lattner/// ContainsFloatAtOffset - Return true if the specified LLVM IR type has a 12550b3620066bfbb33004bed1816c851a923b9301afChris Lattner/// float member at the specified offset. For example, {int,{float}} has a 12560b3620066bfbb33004bed1816c851a923b9301afChris Lattner/// float at offset 4. It is conservatively correct for this routine to return 12570b3620066bfbb33004bed1816c851a923b9301afChris Lattner/// false. 12580b3620066bfbb33004bed1816c851a923b9301afChris Lattnerstatic bool ContainsFloatAtOffset(const llvm::Type *IRType, unsigned IROffset, 12590b3620066bfbb33004bed1816c851a923b9301afChris Lattner const llvm::TargetData &TD) { 12600b3620066bfbb33004bed1816c851a923b9301afChris Lattner // Base case if we find a float. 12610b3620066bfbb33004bed1816c851a923b9301afChris Lattner if (IROffset == 0 && IRType->isFloatTy()) 12620b3620066bfbb33004bed1816c851a923b9301afChris Lattner return true; 12638bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 12640b3620066bfbb33004bed1816c851a923b9301afChris Lattner // If this is a struct, recurse into the field at the specified offset. 12650b3620066bfbb33004bed1816c851a923b9301afChris Lattner if (const llvm::StructType *STy = dyn_cast<llvm::StructType>(IRType)) { 12660b3620066bfbb33004bed1816c851a923b9301afChris Lattner const llvm::StructLayout *SL = TD.getStructLayout(STy); 12670b3620066bfbb33004bed1816c851a923b9301afChris Lattner unsigned Elt = SL->getElementContainingOffset(IROffset); 12680b3620066bfbb33004bed1816c851a923b9301afChris Lattner IROffset -= SL->getElementOffset(Elt); 12690b3620066bfbb33004bed1816c851a923b9301afChris Lattner return ContainsFloatAtOffset(STy->getElementType(Elt), IROffset, TD); 12700b3620066bfbb33004bed1816c851a923b9301afChris Lattner } 12718bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 12720b3620066bfbb33004bed1816c851a923b9301afChris Lattner // If this is an array, recurse into the field at the specified offset. 12730b3620066bfbb33004bed1816c851a923b9301afChris Lattner if (const llvm::ArrayType *ATy = dyn_cast<llvm::ArrayType>(IRType)) { 12740b3620066bfbb33004bed1816c851a923b9301afChris Lattner const llvm::Type *EltTy = ATy->getElementType(); 12750b3620066bfbb33004bed1816c851a923b9301afChris Lattner unsigned EltSize = TD.getTypeAllocSize(EltTy); 12760b3620066bfbb33004bed1816c851a923b9301afChris Lattner IROffset -= IROffset/EltSize*EltSize; 12770b3620066bfbb33004bed1816c851a923b9301afChris Lattner return ContainsFloatAtOffset(EltTy, IROffset, TD); 12780b3620066bfbb33004bed1816c851a923b9301afChris Lattner } 12790b3620066bfbb33004bed1816c851a923b9301afChris Lattner 12800b3620066bfbb33004bed1816c851a923b9301afChris Lattner return false; 12810b3620066bfbb33004bed1816c851a923b9301afChris Lattner} 12820b3620066bfbb33004bed1816c851a923b9301afChris Lattner 1283f47c944b5710a545d564b4d4b641a2f8bac96af3Chris Lattner 1284f47c944b5710a545d564b4d4b641a2f8bac96af3Chris Lattner/// GetSSETypeAtOffset - Return a type that will be passed by the backend in the 1285f47c944b5710a545d564b4d4b641a2f8bac96af3Chris Lattner/// low 8 bytes of an XMM register, corresponding to the SSE class. 1286f47c944b5710a545d564b4d4b641a2f8bac96af3Chris Lattnerconst llvm::Type *X86_64ABIInfo:: 1287f47c944b5710a545d564b4d4b641a2f8bac96af3Chris LattnerGetSSETypeAtOffset(const llvm::Type *IRType, unsigned IROffset, 1288f47c944b5710a545d564b4d4b641a2f8bac96af3Chris Lattner QualType SourceTy, unsigned SourceOffset) const { 1289cba8d310163f84630fd140fbfa9b6fdad9d26587Chris Lattner // The only three choices we have are either double, <2 x float>, or float. We 1290f47c944b5710a545d564b4d4b641a2f8bac96af3Chris Lattner // pass as float if the last 4 bytes is just padding. This happens for 1291f47c944b5710a545d564b4d4b641a2f8bac96af3Chris Lattner // structs that contain 3 floats. 1292f47c944b5710a545d564b4d4b641a2f8bac96af3Chris Lattner if (BitsContainNoUserData(SourceTy, SourceOffset*8+32, 1293f47c944b5710a545d564b4d4b641a2f8bac96af3Chris Lattner SourceOffset*8+64, getContext())) 1294f47c944b5710a545d564b4d4b641a2f8bac96af3Chris Lattner return llvm::Type::getFloatTy(getVMContext()); 12958bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 12960b3620066bfbb33004bed1816c851a923b9301afChris Lattner // We want to pass as <2 x float> if the LLVM IR type contains a float at 12970b3620066bfbb33004bed1816c851a923b9301afChris Lattner // offset+0 and offset+4. Walk the LLVM IR type to find out if this is the 12980b3620066bfbb33004bed1816c851a923b9301afChris Lattner // case. 12990b3620066bfbb33004bed1816c851a923b9301afChris Lattner if (ContainsFloatAtOffset(IRType, IROffset, getTargetData()) && 130022fd4baf2eba2103e2b41e463f1a5f6486c398fbChris Lattner ContainsFloatAtOffset(IRType, IROffset+4, getTargetData())) 130122fd4baf2eba2103e2b41e463f1a5f6486c398fbChris Lattner return llvm::VectorType::get(llvm::Type::getFloatTy(getVMContext()), 2); 13028bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1303f47c944b5710a545d564b4d4b641a2f8bac96af3Chris Lattner return llvm::Type::getDoubleTy(getVMContext()); 1304f47c944b5710a545d564b4d4b641a2f8bac96af3Chris Lattner} 1305f47c944b5710a545d564b4d4b641a2f8bac96af3Chris Lattner 1306f47c944b5710a545d564b4d4b641a2f8bac96af3Chris Lattner 13070d2656d77053cc2ed6f3a3acdf12d67807c7f3a2Chris Lattner/// GetINTEGERTypeAtOffset - The ABI specifies that a value should be passed in 13080d2656d77053cc2ed6f3a3acdf12d67807c7f3a2Chris Lattner/// an 8-byte GPR. This means that we either have a scalar or we are talking 13090d2656d77053cc2ed6f3a3acdf12d67807c7f3a2Chris Lattner/// about the high or low part of an up-to-16-byte struct. This routine picks 13100d2656d77053cc2ed6f3a3acdf12d67807c7f3a2Chris Lattner/// the best LLVM IR type to represent this, which may be i64 or may be anything 1311519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner/// else that the backend will pass in a GPR that works better (e.g. i8, %foo*, 1312519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner/// etc). 1313519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner/// 1314519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner/// PrefType is an LLVM IR type that corresponds to (part of) the IR type for 1315519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner/// the source type. IROffset is an offset in bytes into the LLVM IR type that 1316519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner/// the 8-byte value references. PrefType may be null. 1317519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner/// 1318519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner/// SourceTy is the source level type for the entire argument. SourceOffset is 1319519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner/// an offset into this that we're processing (which is always either 0 or 8). 1320519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner/// 132144f0fd2804e9952a8dbf85bb60ee3501aa9f5ee7Chris Lattnerconst llvm::Type *X86_64ABIInfo:: 13220d2656d77053cc2ed6f3a3acdf12d67807c7f3a2Chris LattnerGetINTEGERTypeAtOffset(const llvm::Type *IRType, unsigned IROffset, 13230d2656d77053cc2ed6f3a3acdf12d67807c7f3a2Chris Lattner QualType SourceTy, unsigned SourceOffset) const { 1324e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner // If we're dealing with an un-offset LLVM IR type, then it means that we're 1325e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner // returning an 8-byte unit starting with it. See if we can safely use it. 1326e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner if (IROffset == 0) { 1327e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner // Pointers and int64's always fill the 8-byte unit. 1328e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner if (isa<llvm::PointerType>(IRType) || IRType->isIntegerTy(64)) 1329e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner return IRType; 1330e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner 1331e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner // If we have a 1/2/4-byte integer, we can use it only if the rest of the 1332e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner // goodness in the source type is just tail padding. This is allowed to 1333e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner // kick in for struct {double,int} on the int, but not on 1334e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner // struct{double,int,int} because we wouldn't return the second int. We 1335e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner // have to do this analysis on the source type because we can't depend on 1336e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner // unions being lowered a specific way etc. 1337e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner if (IRType->isIntegerTy(8) || IRType->isIntegerTy(16) || 1338e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner IRType->isIntegerTy(32)) { 1339e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner unsigned BitWidth = cast<llvm::IntegerType>(IRType)->getBitWidth(); 13408bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1341e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner if (BitsContainNoUserData(SourceTy, SourceOffset*8+BitWidth, 1342e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner SourceOffset*8+64, getContext())) 1343e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner return IRType; 1344e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner } 1345e2962be11e8894329d37985eccaa4f4a12dea402Chris Lattner } 1346519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner 1347fe12d1ee8be8b8023c0c60b299ae957ea0df5d21Chris Lattner if (const llvm::StructType *STy = dyn_cast<llvm::StructType>(IRType)) { 1348519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner // If this is a struct, recurse into the field at the specified offset. 134944f0fd2804e9952a8dbf85bb60ee3501aa9f5ee7Chris Lattner const llvm::StructLayout *SL = getTargetData().getStructLayout(STy); 1350519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner if (IROffset < SL->getSizeInBytes()) { 1351519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner unsigned FieldIdx = SL->getElementContainingOffset(IROffset); 1352519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner IROffset -= SL->getElementOffset(FieldIdx); 13538bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 13540d2656d77053cc2ed6f3a3acdf12d67807c7f3a2Chris Lattner return GetINTEGERTypeAtOffset(STy->getElementType(FieldIdx), IROffset, 13550d2656d77053cc2ed6f3a3acdf12d67807c7f3a2Chris Lattner SourceTy, SourceOffset); 13568bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer } 1357519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner } 13588bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1359021c3a349d4f55cc2c7970268758bcf37b924493Chris Lattner if (const llvm::ArrayType *ATy = dyn_cast<llvm::ArrayType>(IRType)) { 1360021c3a349d4f55cc2c7970268758bcf37b924493Chris Lattner const llvm::Type *EltTy = ATy->getElementType(); 1361021c3a349d4f55cc2c7970268758bcf37b924493Chris Lattner unsigned EltSize = getTargetData().getTypeAllocSize(EltTy); 1362021c3a349d4f55cc2c7970268758bcf37b924493Chris Lattner unsigned EltOffset = IROffset/EltSize*EltSize; 13630d2656d77053cc2ed6f3a3acdf12d67807c7f3a2Chris Lattner return GetINTEGERTypeAtOffset(EltTy, IROffset-EltOffset, SourceTy, 13640d2656d77053cc2ed6f3a3acdf12d67807c7f3a2Chris Lattner SourceOffset); 1365021c3a349d4f55cc2c7970268758bcf37b924493Chris Lattner } 13668bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1367519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner // Okay, we don't have any better idea of what to pass, so we pass this in an 1368519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner // integer register that isn't too big to fit the rest of the struct. 13699e45a3de3f462785a86bba77dee168ab354d9704Chris Lattner unsigned TySizeInBytes = 13709e45a3de3f462785a86bba77dee168ab354d9704Chris Lattner (unsigned)getContext().getTypeSizeInChars(SourceTy).getQuantity(); 1371519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner 13729e45a3de3f462785a86bba77dee168ab354d9704Chris Lattner assert(TySizeInBytes != SourceOffset && "Empty field?"); 13738bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1374519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner // It is always safe to classify this as an integer type up to i64 that 1375519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner // isn't larger than the structure. 13769e45a3de3f462785a86bba77dee168ab354d9704Chris Lattner return llvm::IntegerType::get(getVMContext(), 13779e45a3de3f462785a86bba77dee168ab354d9704Chris Lattner std::min(TySizeInBytes-SourceOffset, 8U)*8); 1378519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner} 1379519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner 13801090a9ba0902380dbd97d0a500daa4c373712df9Chris LattnerABIArgInfo X86_64ABIInfo:: 1381a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris LattnerclassifyReturnType(QualType RetTy) const { 1382c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.2.3p4: Rule 1. Classify the return type with the 1383c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // classification algorithm. 1384c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov X86_64ABIInfo::Class Lo, Hi; 13859c254f0415bef9a0bafe5b5026ddb54b727597b1Chris Lattner classify(RetTy, 0, Lo, Hi); 1386c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1387c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Check some invariants. 1388c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov assert((Hi != Memory || Lo == Memory) && "Invalid memory classification."); 1389c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov assert((Hi != SSEUp || Lo == SSE) && "Invalid SSEUp classification."); 1390c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1391c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov const llvm::Type *ResType = 0; 1392c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov switch (Lo) { 1393c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case NoClass: 1394117e3f4cd4d6ea41c3202da8729f94168c5c8239Chris Lattner if (Hi == NoClass) 1395117e3f4cd4d6ea41c3202da8729f94168c5c8239Chris Lattner return ABIArgInfo::getIgnore(); 1396117e3f4cd4d6ea41c3202da8729f94168c5c8239Chris Lattner // If the low part is just padding, it takes no register, leave ResType 1397117e3f4cd4d6ea41c3202da8729f94168c5c8239Chris Lattner // null. 1398117e3f4cd4d6ea41c3202da8729f94168c5c8239Chris Lattner assert((Hi == SSE || Hi == Integer || Hi == X87Up) && 1399117e3f4cd4d6ea41c3202da8729f94168c5c8239Chris Lattner "Unknown missing lo part"); 1400117e3f4cd4d6ea41c3202da8729f94168c5c8239Chris Lattner break; 1401c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1402c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case SSEUp: 1403c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case X87Up: 1404c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov assert(0 && "Invalid classification for lo word."); 1405c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1406c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.2.3p4: Rule 2. Types of class memory are returned via 1407c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // hidden argument. 1408c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case Memory: 14099c254f0415bef9a0bafe5b5026ddb54b727597b1Chris Lattner return getIndirectReturnResult(RetTy); 1410c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1411c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.2.3p4: Rule 3. If the class is INTEGER, the next 1412c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // available register of the sequence %rax, %rdx is used. 1413c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case Integer: 14140d2656d77053cc2ed6f3a3acdf12d67807c7f3a2Chris Lattner ResType = GetINTEGERTypeAtOffset(CGT.ConvertTypeRecursive(RetTy), 0, 14150d2656d77053cc2ed6f3a3acdf12d67807c7f3a2Chris Lattner RetTy, 0); 14168bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1417eb518b4b89e4134b21975530809697142f69b779Chris Lattner // If we have a sign or zero extended integer, make sure to return Extend 1418eb518b4b89e4134b21975530809697142f69b779Chris Lattner // so that the parameter gets the right LLVM IR attributes. 1419eb518b4b89e4134b21975530809697142f69b779Chris Lattner if (Hi == NoClass && isa<llvm::IntegerType>(ResType)) { 1420eb518b4b89e4134b21975530809697142f69b779Chris Lattner // Treat an enum type as its underlying type. 1421eb518b4b89e4134b21975530809697142f69b779Chris Lattner if (const EnumType *EnumTy = RetTy->getAs<EnumType>()) 1422eb518b4b89e4134b21975530809697142f69b779Chris Lattner RetTy = EnumTy->getDecl()->getIntegerType(); 14238bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1424eb518b4b89e4134b21975530809697142f69b779Chris Lattner if (RetTy->isIntegralOrEnumerationType() && 1425eb518b4b89e4134b21975530809697142f69b779Chris Lattner RetTy->isPromotableIntegerType()) 1426eb518b4b89e4134b21975530809697142f69b779Chris Lattner return ABIArgInfo::getExtend(); 1427eb518b4b89e4134b21975530809697142f69b779Chris Lattner } 1428519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner break; 1429c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1430c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.2.3p4: Rule 4. If the class is SSE, the next 1431c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // available SSE register of the sequence %xmm0, %xmm1 is used. 1432c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case SSE: 1433f47c944b5710a545d564b4d4b641a2f8bac96af3Chris Lattner ResType = GetSSETypeAtOffset(CGT.ConvertTypeRecursive(RetTy), 0, RetTy, 0); 14340b30c67132f00c667512a65cfe1fe81ae54c2383Chris Lattner break; 1435c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1436c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.2.3p4: Rule 6. If the class is X87, the value is 1437c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // returned on the X87 stack in %st0 as 80-bit x87 number. 1438c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case X87: 1439ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner ResType = llvm::Type::getX86_FP80Ty(getVMContext()); 14400b30c67132f00c667512a65cfe1fe81ae54c2383Chris Lattner break; 1441c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1442c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.2.3p4: Rule 8. If the class is COMPLEX_X87, the real 1443c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // part of the value is returned in %st0 and the imaginary part in 1444c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // %st1. 1445c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case ComplexX87: 1446c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov assert(Hi == ComplexX87 && "Unexpected ComplexX87 classification."); 1447a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner ResType = llvm::StructType::get(getVMContext(), 1448ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner llvm::Type::getX86_FP80Ty(getVMContext()), 1449ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner llvm::Type::getX86_FP80Ty(getVMContext()), 1450c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov NULL); 1451c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov break; 1452c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 1453c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1454c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov switch (Hi) { 1455c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Memory was handled previously and X87 should 1456c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // never occur as a hi class. 1457c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case Memory: 1458c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case X87: 1459c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov assert(0 && "Invalid classification for hi word."); 1460c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1461c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case ComplexX87: // Previously handled. 14620b30c67132f00c667512a65cfe1fe81ae54c2383Chris Lattner case NoClass: 14630b30c67132f00c667512a65cfe1fe81ae54c2383Chris Lattner break; 1464c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1465519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner case Integer: { 1466fe12d1ee8be8b8023c0c60b299ae957ea0df5d21Chris Lattner const llvm::Type *HiType = 14670d2656d77053cc2ed6f3a3acdf12d67807c7f3a2Chris Lattner GetINTEGERTypeAtOffset(CGT.ConvertTypeRecursive(RetTy), 8, RetTy, 8); 1468117e3f4cd4d6ea41c3202da8729f94168c5c8239Chris Lattner if (Lo == NoClass) // Return HiType at offset 8 in memory. 1469117e3f4cd4d6ea41c3202da8729f94168c5c8239Chris Lattner return ABIArgInfo::getDirect(HiType, 8); 1470117e3f4cd4d6ea41c3202da8729f94168c5c8239Chris Lattner 1471a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner ResType = llvm::StructType::get(getVMContext(), ResType, HiType, NULL); 1472c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov break; 1473519f68cd26777c755763a644a7f7ed7ac389beb9Chris Lattner } 1474603519d269d48dca99927f0ad65e92099bd76161Chris Lattner case SSE: { 1475603519d269d48dca99927f0ad65e92099bd76161Chris Lattner const llvm::Type *HiType = 1476f47c944b5710a545d564b4d4b641a2f8bac96af3Chris Lattner GetSSETypeAtOffset(CGT.ConvertTypeRecursive(RetTy), 8, RetTy, 8); 1477117e3f4cd4d6ea41c3202da8729f94168c5c8239Chris Lattner if (Lo == NoClass) // Return HiType at offset 8 in memory. 1478117e3f4cd4d6ea41c3202da8729f94168c5c8239Chris Lattner return ABIArgInfo::getDirect(HiType, 8); 1479117e3f4cd4d6ea41c3202da8729f94168c5c8239Chris Lattner 1480603519d269d48dca99927f0ad65e92099bd76161Chris Lattner ResType = llvm::StructType::get(getVMContext(), ResType, HiType,NULL); 1481c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov break; 1482603519d269d48dca99927f0ad65e92099bd76161Chris Lattner } 1483c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1484c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.2.3p4: Rule 5. If the class is SSEUP, the eightbyte 1485c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // is passed in the upper half of the last used SSE register. 1486c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // 1487c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // SSEUP should always be preceeded by SSE, just widen. 1488c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case SSEUp: 1489c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov assert(Lo == SSE && "Unexpected SSEUp classification."); 14900f408f5242522cbede304472e17931357c1b573dChris Lattner ResType = Get16ByteVectorType(RetTy); 1491c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov break; 1492c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1493c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.2.3p4: Rule 7. If the class is X87UP, the value is 1494c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // returned together with the previous X87 value in %st0. 1495c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case X87Up: 1496c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // If X87Up is preceeded by X87, we don't need to do 1497c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // anything. However, in some cases with unions it may not be 1498c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // preceeded by X87. In such situations we follow gcc and pass the 1499c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // extra bits in an SSE reg. 1500603519d269d48dca99927f0ad65e92099bd76161Chris Lattner if (Lo != X87) { 1501603519d269d48dca99927f0ad65e92099bd76161Chris Lattner const llvm::Type *HiType = 1502f47c944b5710a545d564b4d4b641a2f8bac96af3Chris Lattner GetSSETypeAtOffset(CGT.ConvertTypeRecursive(RetTy), 8, RetTy, 8); 1503117e3f4cd4d6ea41c3202da8729f94168c5c8239Chris Lattner if (Lo == NoClass) // Return HiType at offset 8 in memory. 1504117e3f4cd4d6ea41c3202da8729f94168c5c8239Chris Lattner return ABIArgInfo::getDirect(HiType, 8); 15058bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1506603519d269d48dca99927f0ad65e92099bd76161Chris Lattner ResType = llvm::StructType::get(getVMContext(), ResType, HiType, NULL); 1507603519d269d48dca99927f0ad65e92099bd76161Chris Lattner } 1508c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov break; 1509c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 1510c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1511eb518b4b89e4134b21975530809697142f69b779Chris Lattner return ABIArgInfo::getDirect(ResType); 15129c254f0415bef9a0bafe5b5026ddb54b727597b1Chris Lattner} 15139c254f0415bef9a0bafe5b5026ddb54b727597b1Chris Lattner 1514a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris LattnerABIArgInfo X86_64ABIInfo::classifyArgumentType(QualType Ty, unsigned &neededInt, 15155868ca2eb7f00d815f62e46f5a171eb6e5f91b5bChris Lattner unsigned &neededSSE) const { 1516c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov X86_64ABIInfo::Class Lo, Hi; 15179c254f0415bef9a0bafe5b5026ddb54b727597b1Chris Lattner classify(Ty, 0, Lo, Hi); 15188bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1519c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Check some invariants. 1520c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // FIXME: Enforce these by construction. 1521c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov assert((Hi != Memory || Lo == Memory) && "Invalid memory classification."); 1522c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov assert((Hi != SSEUp || Lo == SSE) && "Invalid SSEUp classification."); 1523c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1524c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov neededInt = 0; 1525c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov neededSSE = 0; 1526c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov const llvm::Type *ResType = 0; 1527c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov switch (Lo) { 1528c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case NoClass: 1529117e3f4cd4d6ea41c3202da8729f94168c5c8239Chris Lattner if (Hi == NoClass) 1530117e3f4cd4d6ea41c3202da8729f94168c5c8239Chris Lattner return ABIArgInfo::getIgnore(); 1531117e3f4cd4d6ea41c3202da8729f94168c5c8239Chris Lattner // If the low part is just padding, it takes no register, leave ResType 1532117e3f4cd4d6ea41c3202da8729f94168c5c8239Chris Lattner // null. 1533117e3f4cd4d6ea41c3202da8729f94168c5c8239Chris Lattner assert((Hi == SSE || Hi == Integer || Hi == X87Up) && 1534117e3f4cd4d6ea41c3202da8729f94168c5c8239Chris Lattner "Unknown missing lo part"); 1535117e3f4cd4d6ea41c3202da8729f94168c5c8239Chris Lattner break; 15368bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1537c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.2.3p3: Rule 1. If the class is MEMORY, pass the argument 1538c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // on the stack. 1539c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case Memory: 1540c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1541c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.2.3p3: Rule 5. If the class is X87, X87UP or 1542c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // COMPLEX_X87, it is passed in memory. 1543c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case X87: 1544c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case ComplexX87: 15459c254f0415bef9a0bafe5b5026ddb54b727597b1Chris Lattner return getIndirectResult(Ty); 1546c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1547c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case SSEUp: 1548c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case X87Up: 1549c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov assert(0 && "Invalid classification for lo word."); 1550c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1551c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.2.3p3: Rule 2. If the class is INTEGER, the next 1552c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // available register of the sequence %rdi, %rsi, %rdx, %rcx, %r8 1553c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // and %r9 is used. 1554c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case Integer: 15559c254f0415bef9a0bafe5b5026ddb54b727597b1Chris Lattner ++neededInt; 15568bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 155749382de42c2a411bfd772408e987cb399071241dChris Lattner // Pick an 8-byte type based on the preferred type. 15580d2656d77053cc2ed6f3a3acdf12d67807c7f3a2Chris Lattner ResType = GetINTEGERTypeAtOffset(CGT.ConvertTypeRecursive(Ty), 0, Ty, 0); 1559eb518b4b89e4134b21975530809697142f69b779Chris Lattner 1560eb518b4b89e4134b21975530809697142f69b779Chris Lattner // If we have a sign or zero extended integer, make sure to return Extend 1561eb518b4b89e4134b21975530809697142f69b779Chris Lattner // so that the parameter gets the right LLVM IR attributes. 1562eb518b4b89e4134b21975530809697142f69b779Chris Lattner if (Hi == NoClass && isa<llvm::IntegerType>(ResType)) { 1563eb518b4b89e4134b21975530809697142f69b779Chris Lattner // Treat an enum type as its underlying type. 1564eb518b4b89e4134b21975530809697142f69b779Chris Lattner if (const EnumType *EnumTy = Ty->getAs<EnumType>()) 1565eb518b4b89e4134b21975530809697142f69b779Chris Lattner Ty = EnumTy->getDecl()->getIntegerType(); 15668bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1567eb518b4b89e4134b21975530809697142f69b779Chris Lattner if (Ty->isIntegralOrEnumerationType() && 1568eb518b4b89e4134b21975530809697142f69b779Chris Lattner Ty->isPromotableIntegerType()) 1569eb518b4b89e4134b21975530809697142f69b779Chris Lattner return ABIArgInfo::getExtend(); 1570eb518b4b89e4134b21975530809697142f69b779Chris Lattner } 15718bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1572c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov break; 1573c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1574c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.2.3p3: Rule 3. If the class is SSE, the next 1575c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // available SSE register is used, the registers are taken in the 1576c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // order from %xmm0 to %xmm7. 1577c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case SSE: 1578c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov ++neededSSE; 1579f47c944b5710a545d564b4d4b641a2f8bac96af3Chris Lattner ResType = GetSSETypeAtOffset(CGT.ConvertTypeRecursive(Ty), 0, Ty, 0); 1580c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov break; 1581c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 1582c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1583c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov switch (Hi) { 1584c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Memory was handled previously, ComplexX87 and X87 should 1585c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // never occur as hi classes, and X87Up must be preceed by X87, 1586c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // which is passed in memory. 1587c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case Memory: 1588c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case X87: 1589c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case ComplexX87: 1590c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov assert(0 && "Invalid classification for hi word."); 1591c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov break; 1592c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1593c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case NoClass: break; 15948bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 15959c254f0415bef9a0bafe5b5026ddb54b727597b1Chris Lattner case Integer: { 1596c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov ++neededInt; 159749382de42c2a411bfd772408e987cb399071241dChris Lattner // Pick an 8-byte type based on the preferred type. 1598fe12d1ee8be8b8023c0c60b299ae957ea0df5d21Chris Lattner const llvm::Type *HiType = 15990d2656d77053cc2ed6f3a3acdf12d67807c7f3a2Chris Lattner GetINTEGERTypeAtOffset(CGT.ConvertTypeRecursive(Ty), 8, Ty, 8); 16008bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1601117e3f4cd4d6ea41c3202da8729f94168c5c8239Chris Lattner if (Lo == NoClass) // Pass HiType at offset 8 in memory. 1602117e3f4cd4d6ea41c3202da8729f94168c5c8239Chris Lattner return ABIArgInfo::getDirect(HiType, 8); 1603117e3f4cd4d6ea41c3202da8729f94168c5c8239Chris Lattner 1604a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner ResType = llvm::StructType::get(getVMContext(), ResType, HiType, NULL); 1605c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov break; 16069c254f0415bef9a0bafe5b5026ddb54b727597b1Chris Lattner } 1607c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1608c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // X87Up generally doesn't occur here (long double is passed in 1609c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // memory), except in situations involving unions. 1610c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case X87Up: 1611603519d269d48dca99927f0ad65e92099bd76161Chris Lattner case SSE: { 1612603519d269d48dca99927f0ad65e92099bd76161Chris Lattner const llvm::Type *HiType = 1613f47c944b5710a545d564b4d4b641a2f8bac96af3Chris Lattner GetSSETypeAtOffset(CGT.ConvertTypeRecursive(Ty), 8, Ty, 8); 16148bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1615117e3f4cd4d6ea41c3202da8729f94168c5c8239Chris Lattner if (Lo == NoClass) // Pass HiType at offset 8 in memory. 1616117e3f4cd4d6ea41c3202da8729f94168c5c8239Chris Lattner return ABIArgInfo::getDirect(HiType, 8); 1617117e3f4cd4d6ea41c3202da8729f94168c5c8239Chris Lattner 1618603519d269d48dca99927f0ad65e92099bd76161Chris Lattner ResType = llvm::StructType::get(getVMContext(), ResType, HiType, NULL); 1619c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov ++neededSSE; 1620c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov break; 1621603519d269d48dca99927f0ad65e92099bd76161Chris Lattner } 1622c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1623c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.2.3p3: Rule 4. If the class is SSEUP, the 1624c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // eightbyte is passed in the upper half of the last used SSE 16258bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer // register. This only happens when 128-bit vectors are passed. 1626c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov case SSEUp: 1627ab5722e67794b3954c874a369086fc5f41ac46a5Chris Lattner assert(Lo == SSE && "Unexpected SSEUp classification"); 16280f408f5242522cbede304472e17931357c1b573dChris Lattner ResType = Get16ByteVectorType(Ty); 1629c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov break; 1630c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 1631c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1632eb518b4b89e4134b21975530809697142f69b779Chris Lattner return ABIArgInfo::getDirect(ResType); 1633c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 1634c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1635ee5dcd064a811edc90f6c1fb31a837b6c961fed7Chris Lattnervoid X86_64ABIInfo::computeInfo(CGFunctionInfo &FI) const { 16368bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1637a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner FI.getReturnInfo() = classifyReturnType(FI.getReturnType()); 1638c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1639c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Keep track of the number of assigned registers. 1640c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov unsigned freeIntRegs = 6, freeSSERegs = 8; 1641c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1642c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // If the return value is indirect, then the hidden argument is consuming one 1643c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // integer register. 1644c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (FI.getReturnInfo().isIndirect()) 1645c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov --freeIntRegs; 1646c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1647c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.2.3p3: Once arguments are classified, the registers 1648c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // get assigned (in left-to-right order) for passing as follows... 1649c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov for (CGFunctionInfo::arg_iterator it = FI.arg_begin(), ie = FI.arg_end(); 1650c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov it != ie; ++it) { 1651c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov unsigned neededInt, neededSSE; 16525868ca2eb7f00d815f62e46f5a171eb6e5f91b5bChris Lattner it->info = classifyArgumentType(it->type, neededInt, neededSSE); 1653c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1654c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.2.3p3: If there are no registers available for any 1655c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // eightbyte of an argument, the whole argument is passed on the 1656c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // stack. If registers have already been assigned for some 1657c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // eightbytes of such an argument, the assignments get reverted. 1658c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (freeIntRegs >= neededInt && freeSSERegs >= neededSSE) { 1659c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov freeIntRegs -= neededInt; 1660c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov freeSSERegs -= neededSSE; 1661c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } else { 16629c254f0415bef9a0bafe5b5026ddb54b727597b1Chris Lattner it->info = getIndirectResult(it->type); 1663c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 1664c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 1665c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 1666c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1667c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikovstatic llvm::Value *EmitVAArgFromMemory(llvm::Value *VAListAddr, 1668c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov QualType Ty, 1669c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CodeGenFunction &CGF) { 1670c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Value *overflow_arg_area_p = 1671c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CGF.Builder.CreateStructGEP(VAListAddr, 2, "overflow_arg_area_p"); 1672c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Value *overflow_arg_area = 1673c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CGF.Builder.CreateLoad(overflow_arg_area_p, "overflow_arg_area"); 1674c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1675c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.5.7p5: Step 7. Align l->overflow_arg_area upwards to a 16 1676c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // byte boundary if alignment needed by type exceeds 8 byte boundary. 1677c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov uint64_t Align = CGF.getContext().getTypeAlign(Ty) / 8; 1678c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (Align > 8) { 1679c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Note that we follow the ABI & gcc here, even though the type 1680c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // could in theory have an alignment greater than 16. This case 1681c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // shouldn't ever matter in practice. 1682c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1683c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // overflow_arg_area = (overflow_arg_area + 15) & ~15; 16840032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::Value *Offset = 168577b89b87c3b9220fea1bc80f6d6598d2003cc8a8Chris Lattner llvm::ConstantInt::get(CGF.Int32Ty, 15); 1686c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov overflow_arg_area = CGF.Builder.CreateGEP(overflow_arg_area, Offset); 1687c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Value *AsInt = CGF.Builder.CreatePtrToInt(overflow_arg_area, 168877b89b87c3b9220fea1bc80f6d6598d2003cc8a8Chris Lattner CGF.Int64Ty); 168977b89b87c3b9220fea1bc80f6d6598d2003cc8a8Chris Lattner llvm::Value *Mask = llvm::ConstantInt::get(CGF.Int64Ty, ~15LL); 1690c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov overflow_arg_area = 1691c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CGF.Builder.CreateIntToPtr(CGF.Builder.CreateAnd(AsInt, Mask), 1692c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov overflow_arg_area->getType(), 1693c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov "overflow_arg_area.align"); 1694c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 1695c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1696c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.5.7p5: Step 8. Fetch type from l->overflow_arg_area. 1697c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov const llvm::Type *LTy = CGF.ConvertTypeForMem(Ty); 1698c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Value *Res = 1699c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CGF.Builder.CreateBitCast(overflow_arg_area, 170096e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(LTy)); 1701c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1702c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.5.7p5: Step 9. Set l->overflow_arg_area to: 1703c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // l->overflow_arg_area + sizeof(type). 1704c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.5.7p5: Step 10. Align l->overflow_arg_area upwards to 1705c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // an 8 byte boundary. 1706c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1707c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov uint64_t SizeInBytes = (CGF.getContext().getTypeSize(Ty) + 7) / 8; 17080032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::Value *Offset = 170977b89b87c3b9220fea1bc80f6d6598d2003cc8a8Chris Lattner llvm::ConstantInt::get(CGF.Int32Ty, (SizeInBytes + 7) & ~7); 1710c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov overflow_arg_area = CGF.Builder.CreateGEP(overflow_arg_area, Offset, 1711c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov "overflow_arg_area.next"); 1712c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CGF.Builder.CreateStore(overflow_arg_area, overflow_arg_area_p); 1713c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1714c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.5.7p5: Step 11. Return the fetched type. 1715c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return Res; 1716c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 1717c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1718c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikovllvm::Value *X86_64ABIInfo::EmitVAArg(llvm::Value *VAListAddr, QualType Ty, 1719c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CodeGenFunction &CGF) const { 1720a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson llvm::LLVMContext &VMContext = CGF.getLLVMContext(); 17211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1722c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Assume that va_list type is correct; should be pointer to LLVM type: 1723c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // struct { 1724c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // i32 gp_offset; 1725c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // i32 fp_offset; 1726c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // i8* overflow_arg_area; 1727c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // i8* reg_save_area; 1728c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // }; 1729c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov unsigned neededInt, neededSSE; 17308bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1731a14db75641f377ef8b033c67653cd95ac4c36fe3Chris Lattner Ty = CGF.getContext().getCanonicalType(Ty); 17325868ca2eb7f00d815f62e46f5a171eb6e5f91b5bChris Lattner ABIArgInfo AI = classifyArgumentType(Ty, neededInt, neededSSE); 1733c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1734c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.5.7p5: Step 1. Determine whether type may be passed 1735c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // in the registers. If not go to step 7. 1736c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (!neededInt && !neededSSE) 1737c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return EmitVAArgFromMemory(VAListAddr, Ty, CGF); 1738c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1739c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.5.7p5: Step 2. Compute num_gp to hold the number of 1740c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // general purpose registers needed to pass type and num_fp to hold 1741c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // the number of floating point registers needed. 1742c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1743c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.5.7p5: Step 3. Verify whether arguments fit into 1744c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // registers. In the case: l->gp_offset > 48 - num_gp * 8 or 1745c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // l->fp_offset > 304 - num_fp * 16 go to step 7. 1746c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // 1747c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // NOTE: 304 is a typo, there are (6 * 8 + 8 * 16) = 176 bytes of 1748c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // register save space). 1749c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1750c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Value *InRegs = 0; 1751c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Value *gp_offset_p = 0, *gp_offset = 0; 1752c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Value *fp_offset_p = 0, *fp_offset = 0; 1753c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (neededInt) { 1754c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov gp_offset_p = CGF.Builder.CreateStructGEP(VAListAddr, 0, "gp_offset_p"); 1755c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov gp_offset = CGF.Builder.CreateLoad(gp_offset_p, "gp_offset"); 17561090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner InRegs = llvm::ConstantInt::get(CGF.Int32Ty, 48 - neededInt * 8); 17571090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner InRegs = CGF.Builder.CreateICmpULE(gp_offset, InRegs, "fits_in_gp"); 1758c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 1759c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1760c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (neededSSE) { 1761c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov fp_offset_p = CGF.Builder.CreateStructGEP(VAListAddr, 1, "fp_offset_p"); 1762c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov fp_offset = CGF.Builder.CreateLoad(fp_offset_p, "fp_offset"); 1763c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Value *FitsInFP = 17641090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner llvm::ConstantInt::get(CGF.Int32Ty, 176 - neededSSE * 16); 17651090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner FitsInFP = CGF.Builder.CreateICmpULE(fp_offset, FitsInFP, "fits_in_fp"); 1766c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov InRegs = InRegs ? CGF.Builder.CreateAnd(InRegs, FitsInFP) : FitsInFP; 1767c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 1768c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1769c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::BasicBlock *InRegBlock = CGF.createBasicBlock("vaarg.in_reg"); 1770c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::BasicBlock *InMemBlock = CGF.createBasicBlock("vaarg.in_mem"); 1771c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::BasicBlock *ContBlock = CGF.createBasicBlock("vaarg.end"); 1772c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CGF.Builder.CreateCondBr(InRegs, InRegBlock, InMemBlock); 1773c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1774c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Emit code to load the value if it was passed in registers. 1775c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1776c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CGF.EmitBlock(InRegBlock); 1777c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1778c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.5.7p5: Step 4. Fetch type from l->reg_save_area with 1779c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // an offset of l->gp_offset and/or l->fp_offset. This may require 1780c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // copying to a temporary location in case the parameter is passed 1781c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // in different register classes or requires an alignment greater 1782c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // than 8 for general purpose registers and 16 for XMM registers. 1783c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // 1784c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // FIXME: This really results in shameful code when we end up needing to 1785c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // collect arguments from different places; often what should result in a 1786c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // simple assembling of a structure from scattered addresses has many more 1787c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // loads than necessary. Can we clean this up? 1788c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov const llvm::Type *LTy = CGF.ConvertTypeForMem(Ty); 1789c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Value *RegAddr = 1790c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CGF.Builder.CreateLoad(CGF.Builder.CreateStructGEP(VAListAddr, 3), 1791c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov "reg_save_area"); 1792c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (neededInt && neededSSE) { 1793c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // FIXME: Cleanup. 1794800588fd230d2c37ddce8fbf4a3881352715d700Chris Lattner assert(AI.isDirect() && "Unexpected ABI info for mixed regs"); 1795c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov const llvm::StructType *ST = cast<llvm::StructType>(AI.getCoerceToType()); 1796c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Value *Tmp = CGF.CreateTempAlloca(ST); 1797c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov assert(ST->getNumElements() == 2 && "Unexpected ABI info for mixed regs"); 1798c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov const llvm::Type *TyLo = ST->getElementType(0); 1799c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov const llvm::Type *TyHi = ST->getElementType(1); 1800a8b7a7d3eaa51dd200cba1e5541f2542d24d7a6eChris Lattner assert((TyLo->isFPOrFPVectorTy() ^ TyHi->isFPOrFPVectorTy()) && 1801c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov "Unexpected ABI info for mixed regs"); 180296e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson const llvm::Type *PTyLo = llvm::PointerType::getUnqual(TyLo); 180396e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson const llvm::Type *PTyHi = llvm::PointerType::getUnqual(TyHi); 1804c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Value *GPAddr = CGF.Builder.CreateGEP(RegAddr, gp_offset); 1805c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Value *FPAddr = CGF.Builder.CreateGEP(RegAddr, fp_offset); 1806f177d9d6c27fbbcee8c00fd90b8306985c03c54aDuncan Sands llvm::Value *RegLoAddr = TyLo->isFloatingPointTy() ? FPAddr : GPAddr; 1807f177d9d6c27fbbcee8c00fd90b8306985c03c54aDuncan Sands llvm::Value *RegHiAddr = TyLo->isFloatingPointTy() ? GPAddr : FPAddr; 1808c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Value *V = 1809c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CGF.Builder.CreateLoad(CGF.Builder.CreateBitCast(RegLoAddr, PTyLo)); 1810c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CGF.Builder.CreateStore(V, CGF.Builder.CreateStructGEP(Tmp, 0)); 1811c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov V = CGF.Builder.CreateLoad(CGF.Builder.CreateBitCast(RegHiAddr, PTyHi)); 1812c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CGF.Builder.CreateStore(V, CGF.Builder.CreateStructGEP(Tmp, 1)); 1813c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1814a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson RegAddr = CGF.Builder.CreateBitCast(Tmp, 181596e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(LTy)); 1816c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } else if (neededInt) { 1817c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov RegAddr = CGF.Builder.CreateGEP(RegAddr, gp_offset); 1818c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov RegAddr = CGF.Builder.CreateBitCast(RegAddr, 181996e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(LTy)); 1820dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner } else if (neededSSE == 1) { 1821dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner RegAddr = CGF.Builder.CreateGEP(RegAddr, fp_offset); 1822dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner RegAddr = CGF.Builder.CreateBitCast(RegAddr, 1823dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner llvm::PointerType::getUnqual(LTy)); 1824c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } else { 1825dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner assert(neededSSE == 2 && "Invalid number of needed registers!"); 1826dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner // SSE registers are spaced 16 bytes apart in the register save 1827dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner // area, we need to collect the two eightbytes together. 1828dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner llvm::Value *RegAddrLo = CGF.Builder.CreateGEP(RegAddr, fp_offset); 18291090a9ba0902380dbd97d0a500daa4c373712df9Chris Lattner llvm::Value *RegAddrHi = CGF.Builder.CreateConstGEP1_32(RegAddrLo, 16); 1830dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner const llvm::Type *DoubleTy = llvm::Type::getDoubleTy(VMContext); 1831dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner const llvm::Type *DblPtrTy = 1832dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner llvm::PointerType::getUnqual(DoubleTy); 1833dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner const llvm::StructType *ST = llvm::StructType::get(VMContext, DoubleTy, 1834dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner DoubleTy, NULL); 1835dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner llvm::Value *V, *Tmp = CGF.CreateTempAlloca(ST); 1836dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner V = CGF.Builder.CreateLoad(CGF.Builder.CreateBitCast(RegAddrLo, 1837dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner DblPtrTy)); 1838dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner CGF.Builder.CreateStore(V, CGF.Builder.CreateStructGEP(Tmp, 0)); 1839dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner V = CGF.Builder.CreateLoad(CGF.Builder.CreateBitCast(RegAddrHi, 1840dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner DblPtrTy)); 1841dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner CGF.Builder.CreateStore(V, CGF.Builder.CreateStructGEP(Tmp, 1)); 1842dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner RegAddr = CGF.Builder.CreateBitCast(Tmp, 1843dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner llvm::PointerType::getUnqual(LTy)); 1844c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 1845c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1846c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // AMD64-ABI 3.5.7p5: Step 5. Set: 1847c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // l->gp_offset = l->gp_offset + num_gp * 8 1848c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // l->fp_offset = l->fp_offset + num_fp * 16. 1849c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (neededInt) { 185077b89b87c3b9220fea1bc80f6d6598d2003cc8a8Chris Lattner llvm::Value *Offset = llvm::ConstantInt::get(CGF.Int32Ty, neededInt * 8); 1851c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CGF.Builder.CreateStore(CGF.Builder.CreateAdd(gp_offset, Offset), 1852c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov gp_offset_p); 1853c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 1854c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (neededSSE) { 185577b89b87c3b9220fea1bc80f6d6598d2003cc8a8Chris Lattner llvm::Value *Offset = llvm::ConstantInt::get(CGF.Int32Ty, neededSSE * 16); 1856c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CGF.Builder.CreateStore(CGF.Builder.CreateAdd(fp_offset, Offset), 1857c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov fp_offset_p); 1858c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 1859c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CGF.EmitBranch(ContBlock); 1860c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1861c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Emit code to load the value if it was passed in memory. 1862c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1863c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CGF.EmitBlock(InMemBlock); 1864c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Value *MemAddr = EmitVAArgFromMemory(VAListAddr, Ty, CGF); 1865c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1866c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // Return the appropriate result. 1867c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1868c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CGF.EmitBlock(ContBlock); 1869c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::PHINode *ResAddr = CGF.Builder.CreatePHI(RegAddr->getType(), 1870c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov "vaarg.addr"); 1871c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov ResAddr->reserveOperandSpace(2); 1872c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov ResAddr->addIncoming(RegAddr, InRegBlock); 1873c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov ResAddr->addIncoming(MemAddr, InMemBlock); 1874c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return ResAddr; 1875c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 1876c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1877dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner 1878dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner 1879dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner//===----------------------------------------------------------------------===// 188034d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbar// PIC16 ABI Implementation 1881dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner//===----------------------------------------------------------------------===// 188234d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbar 188334d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbarnamespace { 188434d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbar 1885c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikovclass PIC16ABIInfo : public ABIInfo { 1886ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattnerpublic: 1887ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner PIC16ABIInfo(CodeGenTypes &CGT) : ABIInfo(CGT) {} 18888bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1889a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner ABIArgInfo classifyReturnType(QualType RetTy) const; 1890c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1891a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner ABIArgInfo classifyArgumentType(QualType RetTy) const; 1892c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1893ee5dcd064a811edc90f6c1fb31a837b6c961fed7Chris Lattner virtual void computeInfo(CGFunctionInfo &FI) const { 1894a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner FI.getReturnInfo() = classifyReturnType(FI.getReturnType()); 1895c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov for (CGFunctionInfo::arg_iterator it = FI.arg_begin(), ie = FI.arg_end(); 1896c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov it != ie; ++it) 1897a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner it->info = classifyArgumentType(it->type); 1898c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 1899c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1900c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov virtual llvm::Value *EmitVAArg(llvm::Value *VAListAddr, QualType Ty, 1901c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CodeGenFunction &CGF) const; 1902c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov}; 1903c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 190482d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikovclass PIC16TargetCodeGenInfo : public TargetCodeGenInfo { 190582d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikovpublic: 1906ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner PIC16TargetCodeGenInfo(CodeGenTypes &CGT) 1907ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner : TargetCodeGenInfo(new PIC16ABIInfo(CGT)) {} 190882d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov}; 190982d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov 191034d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbar} 191134d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbar 1912a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris LattnerABIArgInfo PIC16ABIInfo::classifyReturnType(QualType RetTy) const { 1913c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov if (RetTy->isVoidType()) { 1914c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return ABIArgInfo::getIgnore(); 1915c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } else { 1916c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return ABIArgInfo::getDirect(); 1917c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 1918c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 1919c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1920a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris LattnerABIArgInfo PIC16ABIInfo::classifyArgumentType(QualType Ty) const { 1921c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return ABIArgInfo::getDirect(); 1922c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 1923c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1924c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikovllvm::Value *PIC16ABIInfo::EmitVAArg(llvm::Value *VAListAddr, QualType Ty, 192577b89b87c3b9220fea1bc80f6d6598d2003cc8a8Chris Lattner CodeGenFunction &CGF) const { 192652d9ae3220c08fcbb80f213a364a88e4e0067242Chris Lattner const llvm::Type *BP = llvm::Type::getInt8PtrTy(CGF.getLLVMContext()); 1927a446ecd13a9cd2c150baa5d3db4f817db4b1eba8Sanjiv Gupta const llvm::Type *BPP = llvm::PointerType::getUnqual(BP); 1928a446ecd13a9cd2c150baa5d3db4f817db4b1eba8Sanjiv Gupta 1929a446ecd13a9cd2c150baa5d3db4f817db4b1eba8Sanjiv Gupta CGBuilderTy &Builder = CGF.Builder; 1930a446ecd13a9cd2c150baa5d3db4f817db4b1eba8Sanjiv Gupta llvm::Value *VAListAddrAsBPP = Builder.CreateBitCast(VAListAddr, BPP, 1931a446ecd13a9cd2c150baa5d3db4f817db4b1eba8Sanjiv Gupta "ap"); 1932a446ecd13a9cd2c150baa5d3db4f817db4b1eba8Sanjiv Gupta llvm::Value *Addr = Builder.CreateLoad(VAListAddrAsBPP, "ap.cur"); 1933a446ecd13a9cd2c150baa5d3db4f817db4b1eba8Sanjiv Gupta llvm::Type *PTy = 1934a446ecd13a9cd2c150baa5d3db4f817db4b1eba8Sanjiv Gupta llvm::PointerType::getUnqual(CGF.ConvertType(Ty)); 1935a446ecd13a9cd2c150baa5d3db4f817db4b1eba8Sanjiv Gupta llvm::Value *AddrTyped = Builder.CreateBitCast(Addr, PTy); 1936a446ecd13a9cd2c150baa5d3db4f817db4b1eba8Sanjiv Gupta 1937a446ecd13a9cd2c150baa5d3db4f817db4b1eba8Sanjiv Gupta uint64_t Offset = CGF.getContext().getTypeSize(Ty) / 8; 1938a446ecd13a9cd2c150baa5d3db4f817db4b1eba8Sanjiv Gupta 1939a446ecd13a9cd2c150baa5d3db4f817db4b1eba8Sanjiv Gupta llvm::Value *NextAddr = 1940a446ecd13a9cd2c150baa5d3db4f817db4b1eba8Sanjiv Gupta Builder.CreateGEP(Addr, llvm::ConstantInt::get( 1941a446ecd13a9cd2c150baa5d3db4f817db4b1eba8Sanjiv Gupta llvm::Type::getInt32Ty(CGF.getLLVMContext()), Offset), 1942a446ecd13a9cd2c150baa5d3db4f817db4b1eba8Sanjiv Gupta "ap.next"); 1943a446ecd13a9cd2c150baa5d3db4f817db4b1eba8Sanjiv Gupta Builder.CreateStore(NextAddr, VAListAddrAsBPP); 1944a446ecd13a9cd2c150baa5d3db4f817db4b1eba8Sanjiv Gupta 1945a446ecd13a9cd2c150baa5d3db4f817db4b1eba8Sanjiv Gupta return AddrTyped; 1946c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 1947c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 1948a446ecd13a9cd2c150baa5d3db4f817db4b1eba8Sanjiv Gupta 1949ec853ba1087f606e9685cb1e800616565ba35093John McCall// PowerPC-32 1950ec853ba1087f606e9685cb1e800616565ba35093John McCall 1951ec853ba1087f606e9685cb1e800616565ba35093John McCallnamespace { 1952ec853ba1087f606e9685cb1e800616565ba35093John McCallclass PPC32TargetCodeGenInfo : public DefaultTargetCodeGenInfo { 1953ec853ba1087f606e9685cb1e800616565ba35093John McCallpublic: 1954ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner PPC32TargetCodeGenInfo(CodeGenTypes &CGT) : DefaultTargetCodeGenInfo(CGT) {} 19558bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 1956ec853ba1087f606e9685cb1e800616565ba35093John McCall int getDwarfEHStackPointer(CodeGen::CodeGenModule &M) const { 1957ec853ba1087f606e9685cb1e800616565ba35093John McCall // This is recovered from gcc output. 1958ec853ba1087f606e9685cb1e800616565ba35093John McCall return 1; // r1 is the dedicated stack pointer 1959ec853ba1087f606e9685cb1e800616565ba35093John McCall } 1960ec853ba1087f606e9685cb1e800616565ba35093John McCall 1961ec853ba1087f606e9685cb1e800616565ba35093John McCall bool initDwarfEHRegSizeTable(CodeGen::CodeGenFunction &CGF, 19628bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer llvm::Value *Address) const; 1963ec853ba1087f606e9685cb1e800616565ba35093John McCall}; 1964ec853ba1087f606e9685cb1e800616565ba35093John McCall 1965ec853ba1087f606e9685cb1e800616565ba35093John McCall} 1966ec853ba1087f606e9685cb1e800616565ba35093John McCall 1967ec853ba1087f606e9685cb1e800616565ba35093John McCallbool 1968ec853ba1087f606e9685cb1e800616565ba35093John McCallPPC32TargetCodeGenInfo::initDwarfEHRegSizeTable(CodeGen::CodeGenFunction &CGF, 1969ec853ba1087f606e9685cb1e800616565ba35093John McCall llvm::Value *Address) const { 1970ec853ba1087f606e9685cb1e800616565ba35093John McCall // This is calculated from the LLVM and GCC tables and verified 1971ec853ba1087f606e9685cb1e800616565ba35093John McCall // against gcc output. AFAIK all ABIs use the same encoding. 1972ec853ba1087f606e9685cb1e800616565ba35093John McCall 1973ec853ba1087f606e9685cb1e800616565ba35093John McCall CodeGen::CGBuilderTy &Builder = CGF.Builder; 1974ec853ba1087f606e9685cb1e800616565ba35093John McCall llvm::LLVMContext &Context = CGF.getLLVMContext(); 1975ec853ba1087f606e9685cb1e800616565ba35093John McCall 1976ec853ba1087f606e9685cb1e800616565ba35093John McCall const llvm::IntegerType *i8 = llvm::Type::getInt8Ty(Context); 1977ec853ba1087f606e9685cb1e800616565ba35093John McCall llvm::Value *Four8 = llvm::ConstantInt::get(i8, 4); 1978ec853ba1087f606e9685cb1e800616565ba35093John McCall llvm::Value *Eight8 = llvm::ConstantInt::get(i8, 8); 1979ec853ba1087f606e9685cb1e800616565ba35093John McCall llvm::Value *Sixteen8 = llvm::ConstantInt::get(i8, 16); 1980ec853ba1087f606e9685cb1e800616565ba35093John McCall 1981ec853ba1087f606e9685cb1e800616565ba35093John McCall // 0-31: r0-31, the 4-byte general-purpose registers 1982aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall AssignToArrayRange(Builder, Address, Four8, 0, 31); 1983ec853ba1087f606e9685cb1e800616565ba35093John McCall 1984ec853ba1087f606e9685cb1e800616565ba35093John McCall // 32-63: fp0-31, the 8-byte floating-point registers 1985aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall AssignToArrayRange(Builder, Address, Eight8, 32, 63); 1986ec853ba1087f606e9685cb1e800616565ba35093John McCall 1987ec853ba1087f606e9685cb1e800616565ba35093John McCall // 64-76 are various 4-byte special-purpose registers: 1988ec853ba1087f606e9685cb1e800616565ba35093John McCall // 64: mq 1989ec853ba1087f606e9685cb1e800616565ba35093John McCall // 65: lr 1990ec853ba1087f606e9685cb1e800616565ba35093John McCall // 66: ctr 1991ec853ba1087f606e9685cb1e800616565ba35093John McCall // 67: ap 1992ec853ba1087f606e9685cb1e800616565ba35093John McCall // 68-75 cr0-7 1993ec853ba1087f606e9685cb1e800616565ba35093John McCall // 76: xer 1994aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall AssignToArrayRange(Builder, Address, Four8, 64, 76); 1995ec853ba1087f606e9685cb1e800616565ba35093John McCall 1996ec853ba1087f606e9685cb1e800616565ba35093John McCall // 77-108: v0-31, the 16-byte vector registers 1997aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall AssignToArrayRange(Builder, Address, Sixteen8, 77, 108); 1998ec853ba1087f606e9685cb1e800616565ba35093John McCall 1999ec853ba1087f606e9685cb1e800616565ba35093John McCall // 109: vrsave 2000ec853ba1087f606e9685cb1e800616565ba35093John McCall // 110: vscr 2001ec853ba1087f606e9685cb1e800616565ba35093John McCall // 111: spe_acc 2002ec853ba1087f606e9685cb1e800616565ba35093John McCall // 112: spefscr 2003ec853ba1087f606e9685cb1e800616565ba35093John McCall // 113: sfp 2004aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall AssignToArrayRange(Builder, Address, Four8, 109, 113); 2005ec853ba1087f606e9685cb1e800616565ba35093John McCall 20068bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer return false; 2007ec853ba1087f606e9685cb1e800616565ba35093John McCall} 2008ec853ba1087f606e9685cb1e800616565ba35093John McCall 2009ec853ba1087f606e9685cb1e800616565ba35093John McCall 2010dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner//===----------------------------------------------------------------------===// 201134d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbar// ARM ABI Implementation 2012dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner//===----------------------------------------------------------------------===// 201334d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbar 201434d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbarnamespace { 201534d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbar 2016c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikovclass ARMABIInfo : public ABIInfo { 20175e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbarpublic: 20185e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar enum ABIKind { 20195e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar APCS = 0, 20205e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar AAPCS = 1, 20215e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar AAPCS_VFP 20225e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar }; 20235e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar 20245e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbarprivate: 20255e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar ABIKind Kind; 20265e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar 20275e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbarpublic: 2028ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner ARMABIInfo(CodeGenTypes &CGT, ABIKind _Kind) : ABIInfo(CGT), Kind(_Kind) {} 20295e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar 20305e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbarprivate: 20315e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar ABIKind getABIKind() const { return Kind; } 20325e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar 2033a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner ABIArgInfo classifyReturnType(QualType RetTy) const; 2034a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner ABIArgInfo classifyArgumentType(QualType RetTy) const; 2035c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 2036ee5dcd064a811edc90f6c1fb31a837b6c961fed7Chris Lattner virtual void computeInfo(CGFunctionInfo &FI) const; 2037c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 2038c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov virtual llvm::Value *EmitVAArg(llvm::Value *VAListAddr, QualType Ty, 2039c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CodeGenFunction &CGF) const; 2040c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov}; 2041c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 204282d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikovclass ARMTargetCodeGenInfo : public TargetCodeGenInfo { 204382d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikovpublic: 2044ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner ARMTargetCodeGenInfo(CodeGenTypes &CGT, ARMABIInfo::ABIKind K) 2045ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner :TargetCodeGenInfo(new ARMABIInfo(CGT, K)) {} 20466374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall 20476374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall int getDwarfEHStackPointer(CodeGen::CodeGenModule &M) const { 20486374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall return 13; 20496374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall } 205082d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov}; 205182d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov 205234d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbar} 205334d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbar 2054ee5dcd064a811edc90f6c1fb31a837b6c961fed7Chris Lattnervoid ARMABIInfo::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(); 2057a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner it != ie; ++it) 2058a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner it->info = classifyArgumentType(it->type); 20595e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar 2060a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner const llvm::Triple &Triple(getContext().Target.getTriple()); 206125117ab35c1a033846073183314c68ef07d1701aRafael Espindola llvm::CallingConv::ID DefaultCC; 20621ed1a594e9befc91ebf00d81b41a2fdfab862657Rafael Espindola if (Triple.getEnvironmentName() == "gnueabi" || 20631ed1a594e9befc91ebf00d81b41a2fdfab862657Rafael Espindola Triple.getEnvironmentName() == "eabi") 206425117ab35c1a033846073183314c68ef07d1701aRafael Espindola DefaultCC = llvm::CallingConv::ARM_AAPCS; 20651ed1a594e9befc91ebf00d81b41a2fdfab862657Rafael Espindola else 20661ed1a594e9befc91ebf00d81b41a2fdfab862657Rafael Espindola DefaultCC = llvm::CallingConv::ARM_APCS; 206725117ab35c1a033846073183314c68ef07d1701aRafael Espindola 20685e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar switch (getABIKind()) { 20695e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar case APCS: 207025117ab35c1a033846073183314c68ef07d1701aRafael Espindola if (DefaultCC != llvm::CallingConv::ARM_APCS) 207125117ab35c1a033846073183314c68ef07d1701aRafael Espindola FI.setEffectiveCallingConvention(llvm::CallingConv::ARM_APCS); 20725e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar break; 20735e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar 20745e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar case AAPCS: 207525117ab35c1a033846073183314c68ef07d1701aRafael Espindola if (DefaultCC != llvm::CallingConv::ARM_AAPCS) 207625117ab35c1a033846073183314c68ef07d1701aRafael Espindola FI.setEffectiveCallingConvention(llvm::CallingConv::ARM_AAPCS); 20775e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar break; 20785e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar 20795e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar case AAPCS_VFP: 20805e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar FI.setEffectiveCallingConvention(llvm::CallingConv::ARM_AAPCS_VFP); 20815e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar break; 20825e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar } 2083c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 2084c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 2085a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris LattnerABIArgInfo ARMABIInfo::classifyArgumentType(QualType Ty) const { 2086d608cdb7c044365cf4e8764ade1e11e99c176078John McCall if (!isAggregateTypeForABI(Ty)) { 2087aa74a1e49f7c4b89539830290f76fe2c3e97187fDouglas Gregor // Treat an enum type as its underlying type. 2088aa74a1e49f7c4b89539830290f76fe2c3e97187fDouglas Gregor if (const EnumType *EnumTy = Ty->getAs<EnumType>()) 2089aa74a1e49f7c4b89539830290f76fe2c3e97187fDouglas Gregor Ty = EnumTy->getDecl()->getIntegerType(); 2090aa74a1e49f7c4b89539830290f76fe2c3e97187fDouglas Gregor 2091cc6fa88666ca2f287df4a600eb31a4087bab9c13Anton Korobeynikov return (Ty->isPromotableIntegerType() ? 2092cc6fa88666ca2f287df4a600eb31a4087bab9c13Anton Korobeynikov ABIArgInfo::getExtend() : ABIArgInfo::getDirect()); 2093aa74a1e49f7c4b89539830290f76fe2c3e97187fDouglas Gregor } 209498303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 2095420255710694e958fa04bed1d80d96508949879eDaniel Dunbar // Ignore empty records. 2096a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner if (isEmptyRecord(getContext(), Ty, true)) 2097420255710694e958fa04bed1d80d96508949879eDaniel Dunbar return ABIArgInfo::getIgnore(); 2098420255710694e958fa04bed1d80d96508949879eDaniel Dunbar 20990eb1d9733801764cd8b692c67e117e4feeecf013Rafael Espindola // Structures with either a non-trivial destructor or a non-trivial 21000eb1d9733801764cd8b692c67e117e4feeecf013Rafael Espindola // copy constructor are always indirect. 21010eb1d9733801764cd8b692c67e117e4feeecf013Rafael Espindola if (isRecordWithNonTrivialDestructorOrCopyConstructor(Ty)) 21020eb1d9733801764cd8b692c67e117e4feeecf013Rafael Espindola return ABIArgInfo::getIndirect(0, /*ByVal=*/false); 21030eb1d9733801764cd8b692c67e117e4feeecf013Rafael Espindola 2104c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // FIXME: This is kind of nasty... but there isn't much choice because the ARM 2105c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // backend doesn't support byval. 2106c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // FIXME: This doesn't handle alignment > 64 bits. 2107c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov const llvm::Type* ElemTy; 2108c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov unsigned SizeRegs; 2109a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner if (getContext().getTypeAlign(Ty) > 32) { 2110a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner ElemTy = llvm::Type::getInt64Ty(getVMContext()); 2111a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner SizeRegs = (getContext().getTypeSize(Ty) + 63) / 64; 2112c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } else { 2113a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner ElemTy = llvm::Type::getInt32Ty(getVMContext()); 2114a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner SizeRegs = (getContext().getTypeSize(Ty) + 31) / 32; 2115c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 2116c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov std::vector<const llvm::Type*> LLVMFields; 211796e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson LLVMFields.push_back(llvm::ArrayType::get(ElemTy, SizeRegs)); 2118a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner const llvm::Type* STy = llvm::StructType::get(getVMContext(), LLVMFields, 2119a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner true); 2120800588fd230d2c37ddce8fbf4a3881352715d700Chris Lattner return ABIArgInfo::getDirect(STy); 2121c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 2122c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 2123a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattnerstatic bool isIntegerLikeType(QualType Ty, ASTContext &Context, 212498303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar llvm::LLVMContext &VMContext) { 212598303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar // APCS, C Language Calling Conventions, Non-Simple Return Values: A structure 212698303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar // is called integer-like if its size is less than or equal to one word, and 212798303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar // the offset of each of its addressable sub-fields is zero. 212898303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 212998303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar uint64_t Size = Context.getTypeSize(Ty); 213098303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 213198303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar // Check that the type fits in a word. 213298303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar if (Size > 32) 213398303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar return false; 213498303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 213598303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar // FIXME: Handle vector types! 213698303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar if (Ty->isVectorType()) 213798303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar return false; 213898303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 2139b0d58196808aba4b3d1a7488bd5566f3c0a83e89Daniel Dunbar // Float types are never treated as "integer like". 2140b0d58196808aba4b3d1a7488bd5566f3c0a83e89Daniel Dunbar if (Ty->isRealFloatingType()) 2141b0d58196808aba4b3d1a7488bd5566f3c0a83e89Daniel Dunbar return false; 2142b0d58196808aba4b3d1a7488bd5566f3c0a83e89Daniel Dunbar 214398303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar // If this is a builtin or pointer type then it is ok. 2144183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall if (Ty->getAs<BuiltinType>() || Ty->isPointerType()) 214598303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar return true; 214698303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 21474581581881d3f7349bf5a4b39d761bce688f9164Daniel Dunbar // Small complex integer types are "integer like". 21484581581881d3f7349bf5a4b39d761bce688f9164Daniel Dunbar if (const ComplexType *CT = Ty->getAs<ComplexType>()) 21494581581881d3f7349bf5a4b39d761bce688f9164Daniel Dunbar return isIntegerLikeType(CT->getElementType(), Context, VMContext); 215098303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 215198303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar // Single element and zero sized arrays should be allowed, by the definition 215298303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar // above, but they are not. 215398303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 215498303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar // Otherwise, it must be a record type. 215598303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar const RecordType *RT = Ty->getAs<RecordType>(); 215698303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar if (!RT) return false; 215798303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 215898303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar // Ignore records with flexible arrays. 215998303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar const RecordDecl *RD = RT->getDecl(); 216098303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar if (RD->hasFlexibleArrayMember()) 216198303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar return false; 216298303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 216398303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar // Check that all sub-fields are at offset 0, and are themselves "integer 216498303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar // like". 216598303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar const ASTRecordLayout &Layout = Context.getASTRecordLayout(RD); 216698303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 216798303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar bool HadField = false; 216898303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar unsigned idx = 0; 216998303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar for (RecordDecl::field_iterator i = RD->field_begin(), e = RD->field_end(); 217098303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar i != e; ++i, ++idx) { 217198303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar const FieldDecl *FD = *i; 217298303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 2173679855a6e14fbc6c6838c566aa74c32f52f4f946Daniel Dunbar // Bit-fields are not addressable, we only need to verify they are "integer 2174679855a6e14fbc6c6838c566aa74c32f52f4f946Daniel Dunbar // like". We still have to disallow a subsequent non-bitfield, for example: 2175679855a6e14fbc6c6838c566aa74c32f52f4f946Daniel Dunbar // struct { int : 0; int x } 2176679855a6e14fbc6c6838c566aa74c32f52f4f946Daniel Dunbar // is non-integer like according to gcc. 2177679855a6e14fbc6c6838c566aa74c32f52f4f946Daniel Dunbar if (FD->isBitField()) { 2178679855a6e14fbc6c6838c566aa74c32f52f4f946Daniel Dunbar if (!RD->isUnion()) 2179679855a6e14fbc6c6838c566aa74c32f52f4f946Daniel Dunbar HadField = true; 2180679855a6e14fbc6c6838c566aa74c32f52f4f946Daniel Dunbar 2181679855a6e14fbc6c6838c566aa74c32f52f4f946Daniel Dunbar if (!isIntegerLikeType(FD->getType(), Context, VMContext)) 2182679855a6e14fbc6c6838c566aa74c32f52f4f946Daniel Dunbar return false; 218398303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 2184679855a6e14fbc6c6838c566aa74c32f52f4f946Daniel Dunbar continue; 218598303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar } 218698303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 2187679855a6e14fbc6c6838c566aa74c32f52f4f946Daniel Dunbar // Check if this field is at offset 0. 2188679855a6e14fbc6c6838c566aa74c32f52f4f946Daniel Dunbar if (Layout.getFieldOffset(idx) != 0) 2189679855a6e14fbc6c6838c566aa74c32f52f4f946Daniel Dunbar return false; 2190679855a6e14fbc6c6838c566aa74c32f52f4f946Daniel Dunbar 219198303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar if (!isIntegerLikeType(FD->getType(), Context, VMContext)) 219298303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar return false; 21938bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer 2194679855a6e14fbc6c6838c566aa74c32f52f4f946Daniel Dunbar // Only allow at most one field in a structure. This doesn't match the 2195679855a6e14fbc6c6838c566aa74c32f52f4f946Daniel Dunbar // wording above, but follows gcc in situations with a field following an 2196679855a6e14fbc6c6838c566aa74c32f52f4f946Daniel Dunbar // empty structure. 219798303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar if (!RD->isUnion()) { 219898303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar if (HadField) 219998303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar return false; 220098303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 220198303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar HadField = true; 220298303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar } 220398303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar } 220498303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 220598303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar return true; 220698303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar} 220798303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 2208a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris LattnerABIArgInfo ARMABIInfo::classifyReturnType(QualType RetTy) const { 220998303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar if (RetTy->isVoidType()) 2210c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return ABIArgInfo::getIgnore(); 221198303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 2212d608cdb7c044365cf4e8764ade1e11e99c176078John McCall if (!isAggregateTypeForABI(RetTy)) { 2213aa74a1e49f7c4b89539830290f76fe2c3e97187fDouglas Gregor // Treat an enum type as its underlying type. 2214aa74a1e49f7c4b89539830290f76fe2c3e97187fDouglas Gregor if (const EnumType *EnumTy = RetTy->getAs<EnumType>()) 2215aa74a1e49f7c4b89539830290f76fe2c3e97187fDouglas Gregor RetTy = EnumTy->getDecl()->getIntegerType(); 2216aa74a1e49f7c4b89539830290f76fe2c3e97187fDouglas Gregor 2217cc6fa88666ca2f287df4a600eb31a4087bab9c13Anton Korobeynikov return (RetTy->isPromotableIntegerType() ? 2218cc6fa88666ca2f287df4a600eb31a4087bab9c13Anton Korobeynikov ABIArgInfo::getExtend() : ABIArgInfo::getDirect()); 2219aa74a1e49f7c4b89539830290f76fe2c3e97187fDouglas Gregor } 222098303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 22210eb1d9733801764cd8b692c67e117e4feeecf013Rafael Espindola // Structures with either a non-trivial destructor or a non-trivial 22220eb1d9733801764cd8b692c67e117e4feeecf013Rafael Espindola // copy constructor are always indirect. 22230eb1d9733801764cd8b692c67e117e4feeecf013Rafael Espindola if (isRecordWithNonTrivialDestructorOrCopyConstructor(RetTy)) 22240eb1d9733801764cd8b692c67e117e4feeecf013Rafael Espindola return ABIArgInfo::getIndirect(0, /*ByVal=*/false); 22250eb1d9733801764cd8b692c67e117e4feeecf013Rafael Espindola 222698303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar // Are we following APCS? 222798303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar if (getABIKind() == APCS) { 2228a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner if (isEmptyRecord(getContext(), RetTy, false)) 222998303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar return ABIArgInfo::getIgnore(); 223098303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 22314cc753f4503931763cfb762a95928b44fcbe64e9Daniel Dunbar // Complex types are all returned as packed integers. 22324cc753f4503931763cfb762a95928b44fcbe64e9Daniel Dunbar // 22334cc753f4503931763cfb762a95928b44fcbe64e9Daniel Dunbar // FIXME: Consider using 2 x vector types if the back end handles them 22344cc753f4503931763cfb762a95928b44fcbe64e9Daniel Dunbar // correctly. 22354cc753f4503931763cfb762a95928b44fcbe64e9Daniel Dunbar if (RetTy->isAnyComplexType()) 2236800588fd230d2c37ddce8fbf4a3881352715d700Chris Lattner return ABIArgInfo::getDirect(llvm::IntegerType::get(getVMContext(), 2237a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner getContext().getTypeSize(RetTy))); 22384cc753f4503931763cfb762a95928b44fcbe64e9Daniel Dunbar 223998303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar // Integer like structures are returned in r0. 2240a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner if (isIntegerLikeType(RetTy, getContext(), getVMContext())) { 224198303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar // Return in the smallest viable integer type. 2242a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner uint64_t Size = getContext().getTypeSize(RetTy); 224398303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar if (Size <= 8) 2244800588fd230d2c37ddce8fbf4a3881352715d700Chris Lattner return ABIArgInfo::getDirect(llvm::Type::getInt8Ty(getVMContext())); 224598303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar if (Size <= 16) 2246800588fd230d2c37ddce8fbf4a3881352715d700Chris Lattner return ABIArgInfo::getDirect(llvm::Type::getInt16Ty(getVMContext())); 2247800588fd230d2c37ddce8fbf4a3881352715d700Chris Lattner return ABIArgInfo::getDirect(llvm::Type::getInt32Ty(getVMContext())); 224898303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar } 224998303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 225098303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar // Otherwise return in memory. 225198303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar return ABIArgInfo::getIndirect(0); 2252c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 225398303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 225498303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar // Otherwise this is an AAPCS variant. 225598303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar 2256a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner if (isEmptyRecord(getContext(), RetTy, true)) 225716a0808b7992db2c2ba78b387e1732bbb0fb371bDaniel Dunbar return ABIArgInfo::getIgnore(); 225816a0808b7992db2c2ba78b387e1732bbb0fb371bDaniel Dunbar 225998303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar // Aggregates <= 4 bytes are returned in r0; other aggregates 226098303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar // are returned indirectly. 2261a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner uint64_t Size = getContext().getTypeSize(RetTy); 226216a0808b7992db2c2ba78b387e1732bbb0fb371bDaniel Dunbar if (Size <= 32) { 226316a0808b7992db2c2ba78b387e1732bbb0fb371bDaniel Dunbar // Return in the smallest viable integer type. 226416a0808b7992db2c2ba78b387e1732bbb0fb371bDaniel Dunbar if (Size <= 8) 2265800588fd230d2c37ddce8fbf4a3881352715d700Chris Lattner return ABIArgInfo::getDirect(llvm::Type::getInt8Ty(getVMContext())); 226616a0808b7992db2c2ba78b387e1732bbb0fb371bDaniel Dunbar if (Size <= 16) 2267800588fd230d2c37ddce8fbf4a3881352715d700Chris Lattner return ABIArgInfo::getDirect(llvm::Type::getInt16Ty(getVMContext())); 2268800588fd230d2c37ddce8fbf4a3881352715d700Chris Lattner return ABIArgInfo::getDirect(llvm::Type::getInt32Ty(getVMContext())); 226916a0808b7992db2c2ba78b387e1732bbb0fb371bDaniel Dunbar } 227016a0808b7992db2c2ba78b387e1732bbb0fb371bDaniel Dunbar 227198303b93ae335bbb4731f6f1f8164d3c70648346Daniel Dunbar return ABIArgInfo::getIndirect(0); 2272c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 2273c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 2274c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikovllvm::Value *ARMABIInfo::EmitVAArg(llvm::Value *VAListAddr, QualType Ty, 227577b89b87c3b9220fea1bc80f6d6598d2003cc8a8Chris Lattner CodeGenFunction &CGF) const { 2276c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov // FIXME: Need to handle alignment 22773c0ef8cc0dc246bd3083e8cdd63005e8873d36d2Benjamin Kramer const llvm::Type *BP = llvm::Type::getInt8PtrTy(CGF.getLLVMContext()); 227896e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson const llvm::Type *BPP = llvm::PointerType::getUnqual(BP); 2279c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 2280c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov CGBuilderTy &Builder = CGF.Builder; 2281c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Value *VAListAddrAsBPP = Builder.CreateBitCast(VAListAddr, BPP, 2282c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov "ap"); 2283c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Value *Addr = Builder.CreateLoad(VAListAddrAsBPP, "ap.cur"); 2284c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Type *PTy = 228596e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(CGF.ConvertType(Ty)); 2286c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Value *AddrTyped = Builder.CreateBitCast(Addr, PTy); 2287c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 2288c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov uint64_t Offset = 2289c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::RoundUpToAlignment(CGF.getContext().getTypeSize(Ty) / 8, 4); 2290c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov llvm::Value *NextAddr = 229177b89b87c3b9220fea1bc80f6d6598d2003cc8a8Chris Lattner Builder.CreateGEP(Addr, llvm::ConstantInt::get(CGF.Int32Ty, Offset), 2292c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov "ap.next"); 2293c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov Builder.CreateStore(NextAddr, VAListAddrAsBPP); 2294c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 2295c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return AddrTyped; 2296c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 2297c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 2298a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris LattnerABIArgInfo DefaultABIInfo::classifyReturnType(QualType RetTy) const { 2299a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner if (RetTy->isVoidType()) 2300c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return ABIArgInfo::getIgnore(); 2301a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner 2302d608cdb7c044365cf4e8764ade1e11e99c176078John McCall if (isAggregateTypeForABI(RetTy)) 2303c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov return ABIArgInfo::getIndirect(0); 2304aa74a1e49f7c4b89539830290f76fe2c3e97187fDouglas Gregor 2305a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner // Treat an enum type as its underlying type. 2306a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner if (const EnumType *EnumTy = RetTy->getAs<EnumType>()) 2307a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner RetTy = EnumTy->getDecl()->getIntegerType(); 2308a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner 2309a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner return (RetTy->isPromotableIntegerType() ? 2310a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner ABIArgInfo::getExtend() : ABIArgInfo::getDirect()); 2311c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 2312c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 2313dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner//===----------------------------------------------------------------------===// 231434d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbar// SystemZ ABI Implementation 2315dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner//===----------------------------------------------------------------------===// 231634d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbar 231789e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikovnamespace { 231834d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbar 231989e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikovclass SystemZABIInfo : public ABIInfo { 2320ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattnerpublic: 2321ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner SystemZABIInfo(CodeGenTypes &CGT) : ABIInfo(CGT) {} 2322ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner 232389e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov bool isPromotableIntegerType(QualType Ty) const; 232489e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov 2325a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner ABIArgInfo classifyReturnType(QualType RetTy) const; 2326a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner ABIArgInfo classifyArgumentType(QualType RetTy) const; 232789e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov 2328ee5dcd064a811edc90f6c1fb31a837b6c961fed7Chris Lattner virtual void computeInfo(CGFunctionInfo &FI) const { 2329a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner FI.getReturnInfo() = classifyReturnType(FI.getReturnType()); 233089e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov for (CGFunctionInfo::arg_iterator it = FI.arg_begin(), ie = FI.arg_end(); 233189e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov it != ie; ++it) 2332a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner it->info = classifyArgumentType(it->type); 233389e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov } 233489e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov 233589e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov virtual llvm::Value *EmitVAArg(llvm::Value *VAListAddr, QualType Ty, 233689e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov CodeGenFunction &CGF) const; 233789e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov}; 233834d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbar 233982d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikovclass SystemZTargetCodeGenInfo : public TargetCodeGenInfo { 234082d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikovpublic: 2341ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner SystemZTargetCodeGenInfo(CodeGenTypes &CGT) 2342ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner : TargetCodeGenInfo(new SystemZABIInfo(CGT)) {} 234382d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov}; 234482d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov 234589e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov} 234689e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov 234789e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikovbool SystemZABIInfo::isPromotableIntegerType(QualType Ty) const { 234889e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov // SystemZ ABI requires all 8, 16 and 32 bit quantities to be extended. 2349183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall if (const BuiltinType *BT = Ty->getAs<BuiltinType>()) 235089e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov switch (BT->getKind()) { 235189e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov case BuiltinType::Bool: 235289e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov case BuiltinType::Char_S: 235389e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov case BuiltinType::Char_U: 235489e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov case BuiltinType::SChar: 235589e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov case BuiltinType::UChar: 235689e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov case BuiltinType::Short: 235789e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov case BuiltinType::UShort: 235889e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov case BuiltinType::Int: 235989e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov case BuiltinType::UInt: 236089e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov return true; 236189e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov default: 236289e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov return false; 236389e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov } 236489e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov return false; 236589e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov} 236689e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov 236789e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikovllvm::Value *SystemZABIInfo::EmitVAArg(llvm::Value *VAListAddr, QualType Ty, 236889e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov CodeGenFunction &CGF) const { 236989e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov // FIXME: Implement 237089e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov return 0; 237189e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov} 237289e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov 237389e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov 2374a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris LattnerABIArgInfo SystemZABIInfo::classifyReturnType(QualType RetTy) const { 2375a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner if (RetTy->isVoidType()) 237689e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov return ABIArgInfo::getIgnore(); 2377d608cdb7c044365cf4e8764ade1e11e99c176078John McCall if (isAggregateTypeForABI(RetTy)) 237889e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov return ABIArgInfo::getIndirect(0); 2379a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner 2380a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner return (isPromotableIntegerType(RetTy) ? 2381a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner ABIArgInfo::getExtend() : ABIArgInfo::getDirect()); 238289e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov} 238389e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov 2384a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris LattnerABIArgInfo SystemZABIInfo::classifyArgumentType(QualType Ty) const { 2385d608cdb7c044365cf4e8764ade1e11e99c176078John McCall if (isAggregateTypeForABI(Ty)) 238689e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov return ABIArgInfo::getIndirect(0); 2387a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner 2388a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner return (isPromotableIntegerType(Ty) ? 2389a3c109bbf6e198f463fbe204da4d25b40dab65c4Chris Lattner ABIArgInfo::getExtend() : ABIArgInfo::getDirect()); 239089e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov} 239189e887fd73dd87c1118e13ebddf11aed9e25b763Anton Korobeynikov 2392dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner//===----------------------------------------------------------------------===// 239382d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov// MSP430 ABI Implementation 2394dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner//===----------------------------------------------------------------------===// 239582d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov 239682d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikovnamespace { 239782d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov 239882d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikovclass MSP430TargetCodeGenInfo : public TargetCodeGenInfo { 239982d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikovpublic: 2400ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner MSP430TargetCodeGenInfo(CodeGenTypes &CGT) 2401ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner : TargetCodeGenInfo(new DefaultABIInfo(CGT)) {} 240282d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov void SetTargetAttributes(const Decl *D, llvm::GlobalValue *GV, 240382d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov CodeGen::CodeGenModule &M) const; 240482d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov}; 240582d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov 2406c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 2407c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 240882d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikovvoid MSP430TargetCodeGenInfo::SetTargetAttributes(const Decl *D, 240982d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov llvm::GlobalValue *GV, 241082d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov CodeGen::CodeGenModule &M) const { 241182d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 241282d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov if (const MSP430InterruptAttr *attr = FD->getAttr<MSP430InterruptAttr>()) { 241382d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov // Handle 'interrupt' attribute: 241482d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov llvm::Function *F = cast<llvm::Function>(GV); 241582d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov 241682d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov // Step 1: Set ISR calling convention. 241782d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov F->setCallingConv(llvm::CallingConv::MSP430_INTR); 241882d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov 241982d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov // Step 2: Add attributes goodness. 242082d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov F->addFnAttr(llvm::Attribute::NoInline); 242182d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov 242282d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov // Step 3: Emit ISR vector alias. 242382d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov unsigned Num = attr->getNumber() + 0xffe0; 242482d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov new llvm::GlobalAlias(GV->getType(), llvm::Function::ExternalLinkage, 242582d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov "vector_" + 242682d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov llvm::LowercaseString(llvm::utohexstr(Num)), 242782d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov GV, &M.getModule()); 242882d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov } 242982d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov } 2430c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 2431c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 2432dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner//===----------------------------------------------------------------------===// 2433aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall// MIPS ABI Implementation. This works for both little-endian and 2434aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall// big-endian variants. 2435dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner//===----------------------------------------------------------------------===// 2436dce5ad0cf70ba74e1ecdbb5e81f1a81d97821636Chris Lattner 2437aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCallnamespace { 2438aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCallclass MIPSTargetCodeGenInfo : public TargetCodeGenInfo { 2439aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCallpublic: 2440ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner MIPSTargetCodeGenInfo(CodeGenTypes &CGT) 2441ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner : TargetCodeGenInfo(new DefaultABIInfo(CGT)) {} 2442aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall 2443aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall int getDwarfEHStackPointer(CodeGen::CodeGenModule &CGM) const { 2444aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall return 29; 2445aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall } 2446aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall 2447aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall bool initDwarfEHRegSizeTable(CodeGen::CodeGenFunction &CGF, 24488bea82f6699e4384ef823cdc8800ad5db271177cMichael J. Spencer llvm::Value *Address) const; 2449aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall}; 2450aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall} 2451aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall 2452aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCallbool 2453aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCallMIPSTargetCodeGenInfo::initDwarfEHRegSizeTable(CodeGen::CodeGenFunction &CGF, 2454aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall llvm::Value *Address) const { 2455aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall // This information comes from gcc's implementation, which seems to 2456aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall // as canonical as it gets. 2457aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall 2458aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall CodeGen::CGBuilderTy &Builder = CGF.Builder; 2459aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall llvm::LLVMContext &Context = CGF.getLLVMContext(); 2460aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall 2461aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall // Everything on MIPS is 4 bytes. Double-precision FP registers 2462aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall // are aliased to pairs of single-precision FP registers. 2463aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall const llvm::IntegerType *i8 = llvm::Type::getInt8Ty(Context); 2464aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall llvm::Value *Four8 = llvm::ConstantInt::get(i8, 4); 2465aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall 2466aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall // 0-31 are the general purpose registers, $0 - $31. 2467aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall // 32-63 are the floating-point registers, $f0 - $f31. 2468aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall // 64 and 65 are the multiply/divide registers, $hi and $lo. 2469aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall // 66 is the (notional, I think) register for signal-handler return. 2470aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall AssignToArrayRange(Builder, Address, Four8, 0, 65); 2471aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall 2472aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall // 67-74 are the floating-point status registers, $fcc0 - $fcc7. 2473aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall // They are one bit wide and ignored here. 2474aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall 2475aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall // 80-111 are the coprocessor 0 registers, $c0r0 - $c0r31. 2476aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall // (coprocessor 1 is the FP unit) 2477aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall // 112-143 are the coprocessor 2 registers, $c2r0 - $c2r31. 2478aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall // 144-175 are the coprocessor 3 registers, $c3r0 - $c3r31. 2479aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall // 176-181 are the DSP accumulator registers. 2480aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall AssignToArrayRange(Builder, Address, Four8, 80, 181); 2481aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall 2482aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall return false; 2483aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall} 2484aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall 2485aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall 2486ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattnerconst TargetCodeGenInfo &CodeGenModule::getTargetCodeGenInfo() { 248782d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov if (TheTargetCodeGenInfo) 248882d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov return *TheTargetCodeGenInfo; 2489c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov 249082d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov // For now we just cache the TargetCodeGenInfo in CodeGenModule and don't 249182d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov // free it. 24922c0843f166a82f251b20370fadab57878969e7aaDaniel Dunbar 24939c254f0415bef9a0bafe5b5026ddb54b727597b1Chris Lattner const llvm::Triple &Triple = getContext().Target.getTriple(); 24941752ee4849f4c37f5e03193e658be92650b0e65aDaniel Dunbar switch (Triple.getArch()) { 24952c0843f166a82f251b20370fadab57878969e7aaDaniel Dunbar default: 2496ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner return *(TheTargetCodeGenInfo = new DefaultTargetCodeGenInfo(Types)); 24972c0843f166a82f251b20370fadab57878969e7aaDaniel Dunbar 2498aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall case llvm::Triple::mips: 2499aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall case llvm::Triple::mipsel: 2500ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner return *(TheTargetCodeGenInfo = new MIPSTargetCodeGenInfo(Types)); 2501aeeb7011a875d3dd439e9fa07dc3ac54d97785b9John McCall 250234d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbar case llvm::Triple::arm: 250334d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbar case llvm::Triple::thumb: 25045e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar // FIXME: We want to know the float calling convention as well. 2505018ba5ab0671d9b6eefecaffc118c869bea151a1Daniel Dunbar if (strcmp(getContext().Target.getABI(), "apcs-gnu") == 0) 250682d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov return *(TheTargetCodeGenInfo = 2507ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner new ARMTargetCodeGenInfo(Types, ARMABIInfo::APCS)); 25085e7bacef79f7725f4abc45e2a5eccedae40dfcd3Daniel Dunbar 250982d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov return *(TheTargetCodeGenInfo = 2510ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner new ARMTargetCodeGenInfo(Types, ARMABIInfo::AAPCS)); 251134d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbar 251234d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbar case llvm::Triple::pic16: 2513ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner return *(TheTargetCodeGenInfo = new PIC16TargetCodeGenInfo(Types)); 251434d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbar 2515ec853ba1087f606e9685cb1e800616565ba35093John McCall case llvm::Triple::ppc: 2516ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner return *(TheTargetCodeGenInfo = new PPC32TargetCodeGenInfo(Types)); 2517ec853ba1087f606e9685cb1e800616565ba35093John McCall 251834d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbar case llvm::Triple::systemz: 2519ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner return *(TheTargetCodeGenInfo = new SystemZTargetCodeGenInfo(Types)); 252082d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov 252182d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov case llvm::Triple::msp430: 2522ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner return *(TheTargetCodeGenInfo = new MSP430TargetCodeGenInfo(Types)); 252334d91fddd0252d64456cdcea0bd22073f006f4e2Daniel Dunbar 25241752ee4849f4c37f5e03193e658be92650b0e65aDaniel Dunbar case llvm::Triple::x86: 25251752ee4849f4c37f5e03193e658be92650b0e65aDaniel Dunbar switch (Triple.getOS()) { 25267ee68bd706c0ade45d3d1e85c77e25678f5ab1e8Edward O'Callaghan case llvm::Triple::Darwin: 252782d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov return *(TheTargetCodeGenInfo = 2528ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner new X86_32TargetCodeGenInfo(Types, true, true)); 25292c0843f166a82f251b20370fadab57878969e7aaDaniel Dunbar case llvm::Triple::Cygwin: 25302c0843f166a82f251b20370fadab57878969e7aaDaniel Dunbar case llvm::Triple::MinGW32: 25312c0843f166a82f251b20370fadab57878969e7aaDaniel Dunbar case llvm::Triple::MinGW64: 2532727e268bd2974a7b16af65a5cfdfe47da9ebeb6cEdward O'Callaghan case llvm::Triple::AuroraUX: 2533727e268bd2974a7b16af65a5cfdfe47da9ebeb6cEdward O'Callaghan case llvm::Triple::DragonFly: 253475c135a511c855d94bbfa7f00dd27a165f61e953David Chisnall case llvm::Triple::FreeBSD: 25352c0843f166a82f251b20370fadab57878969e7aaDaniel Dunbar case llvm::Triple::OpenBSD: 253682d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov return *(TheTargetCodeGenInfo = 2537ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner new X86_32TargetCodeGenInfo(Types, false, true)); 25382c0843f166a82f251b20370fadab57878969e7aaDaniel Dunbar 25392c0843f166a82f251b20370fadab57878969e7aaDaniel Dunbar default: 254082d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov return *(TheTargetCodeGenInfo = 2541ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner new X86_32TargetCodeGenInfo(Types, false, false)); 2542c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 25432c0843f166a82f251b20370fadab57878969e7aaDaniel Dunbar 25442c0843f166a82f251b20370fadab57878969e7aaDaniel Dunbar case llvm::Triple::x86_64: 2545ea0443212e7ec6ff82e2f174e8e948a6eb0e0876Chris Lattner return *(TheTargetCodeGenInfo = new X86_64TargetCodeGenInfo(Types)); 2546c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov } 2547c4a59eb306efeb4bffa3cefecd1e6392fc5c4144Anton Korobeynikov} 2548