CGCall.cpp revision 0af9929e1ba8e5b9ae0a8999439736d249599bbe
10dbe227feccf6a8dbadfff8ca3f80416b7bf2f28Daniel Dunbar//===----- CGCall.h - Encapsulate calling convention details ----*- C++ -*-===// 20dbe227feccf6a8dbadfff8ca3f80416b7bf2f28Daniel Dunbar// 30dbe227feccf6a8dbadfff8ca3f80416b7bf2f28Daniel Dunbar// The LLVM Compiler Infrastructure 40dbe227feccf6a8dbadfff8ca3f80416b7bf2f28Daniel Dunbar// 50dbe227feccf6a8dbadfff8ca3f80416b7bf2f28Daniel Dunbar// This file is distributed under the University of Illinois Open Source 60dbe227feccf6a8dbadfff8ca3f80416b7bf2f28Daniel Dunbar// License. See LICENSE.TXT for details. 70dbe227feccf6a8dbadfff8ca3f80416b7bf2f28Daniel Dunbar// 80dbe227feccf6a8dbadfff8ca3f80416b7bf2f28Daniel Dunbar//===----------------------------------------------------------------------===// 90dbe227feccf6a8dbadfff8ca3f80416b7bf2f28Daniel Dunbar// 100dbe227feccf6a8dbadfff8ca3f80416b7bf2f28Daniel Dunbar// These classes wrap the information about a call or function 110dbe227feccf6a8dbadfff8ca3f80416b7bf2f28Daniel Dunbar// definition used to handle ABI compliancy. 120dbe227feccf6a8dbadfff8ca3f80416b7bf2f28Daniel Dunbar// 130dbe227feccf6a8dbadfff8ca3f80416b7bf2f28Daniel Dunbar//===----------------------------------------------------------------------===// 140dbe227feccf6a8dbadfff8ca3f80416b7bf2f28Daniel Dunbar 150dbe227feccf6a8dbadfff8ca3f80416b7bf2f28Daniel Dunbar#include "CGCall.h" 160dbe227feccf6a8dbadfff8ca3f80416b7bf2f28Daniel Dunbar#include "CodeGenFunction.h" 17b768807c49a1c7085def099b848631856af766faDaniel Dunbar#include "CodeGenModule.h" 186b1da0ea19c12346192f5ea4d70872c13bfcc82aDaniel Dunbar#include "clang/Basic/TargetInfo.h" 190dbe227feccf6a8dbadfff8ca3f80416b7bf2f28Daniel Dunbar#include "clang/AST/ASTContext.h" 200dbe227feccf6a8dbadfff8ca3f80416b7bf2f28Daniel Dunbar#include "clang/AST/Decl.h" 210dbe227feccf6a8dbadfff8ca3f80416b7bf2f28Daniel Dunbar#include "clang/AST/DeclObjC.h" 2299037e5a2118bc194251a8033a0885810bf61c95Daniel Dunbar#include "clang/AST/RecordLayout.h" 235627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar#include "llvm/ADT/StringExtras.h" 24d0646bd7c11c12b34971b55e5c1bdd8439401b4cDevang Patel#include "llvm/Attributes.h" 256f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar#include "llvm/Support/CommandLine.h" 26be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar#include "llvm/Support/MathExtras.h" 276f7279bf98e31356306386b2c200820a76b491cfDaniel Dunbar#include "llvm/Support/raw_ostream.h" 2854d1ccbfcf19ddf39444f1b4018dd79487cc847bDaniel Dunbar#include "llvm/Target/TargetData.h" 299eb5c6d3242d85359b2d669564c5e2826efb1931Daniel Dunbar 309eb5c6d3242d85359b2d669564c5e2826efb1931Daniel Dunbar#include "ABIInfo.h" 319eb5c6d3242d85359b2d669564c5e2826efb1931Daniel Dunbar 320dbe227feccf6a8dbadfff8ca3f80416b7bf2f28Daniel Dunbarusing namespace clang; 330dbe227feccf6a8dbadfff8ca3f80416b7bf2f28Daniel Dunbarusing namespace CodeGen; 340dbe227feccf6a8dbadfff8ca3f80416b7bf2f28Daniel Dunbar 350dbe227feccf6a8dbadfff8ca3f80416b7bf2f28Daniel Dunbar/***/ 360dbe227feccf6a8dbadfff8ca3f80416b7bf2f28Daniel Dunbar 370dbe227feccf6a8dbadfff8ca3f80416b7bf2f28Daniel Dunbar// FIXME: Use iterator and sidestep silly type array creation. 380dbe227feccf6a8dbadfff8ca3f80416b7bf2f28Daniel Dunbar 39541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbarconst 40541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel DunbarCGFunctionInfo &CodeGenTypes::getFunctionInfo(const FunctionTypeNoProto *FTNP) { 41541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar return getFunctionInfo(FTNP->getResultType(), 42541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar llvm::SmallVector<QualType, 16>()); 4345c25ba11cbf8c9a461def5b03f6ee9481e06769Daniel Dunbar} 4445c25ba11cbf8c9a461def5b03f6ee9481e06769Daniel Dunbar 45541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbarconst 46541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel DunbarCGFunctionInfo &CodeGenTypes::getFunctionInfo(const FunctionTypeProto *FTP) { 47541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar llvm::SmallVector<QualType, 16> ArgTys; 48541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar // FIXME: Kill copy. 4945c25ba11cbf8c9a461def5b03f6ee9481e06769Daniel Dunbar for (unsigned i = 0, e = FTP->getNumArgs(); i != e; ++i) 50541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar ArgTys.push_back(FTP->getArgType(i)); 51541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar return getFunctionInfo(FTP->getResultType(), ArgTys); 5245c25ba11cbf8c9a461def5b03f6ee9481e06769Daniel Dunbar} 5345c25ba11cbf8c9a461def5b03f6ee9481e06769Daniel Dunbar 54541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbarconst CGFunctionInfo &CodeGenTypes::getFunctionInfo(const FunctionDecl *FD) { 550dbe227feccf6a8dbadfff8ca3f80416b7bf2f28Daniel Dunbar const FunctionType *FTy = FD->getType()->getAsFunctionType(); 56541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar if (const FunctionTypeProto *FTP = dyn_cast<FunctionTypeProto>(FTy)) 57541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar return getFunctionInfo(FTP); 58541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar return getFunctionInfo(cast<FunctionTypeNoProto>(FTy)); 590dbe227feccf6a8dbadfff8ca3f80416b7bf2f28Daniel Dunbar} 600dbe227feccf6a8dbadfff8ca3f80416b7bf2f28Daniel Dunbar 61541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbarconst CGFunctionInfo &CodeGenTypes::getFunctionInfo(const ObjCMethodDecl *MD) { 62541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar llvm::SmallVector<QualType, 16> ArgTys; 63541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar ArgTys.push_back(MD->getSelfDecl()->getType()); 64541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar ArgTys.push_back(Context.getObjCSelType()); 65541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar // FIXME: Kill copy? 662073216a1075767b5d25c23d1462b7034686d94dChris Lattner for (ObjCMethodDecl::param_iterator i = MD->param_begin(), 670dbe227feccf6a8dbadfff8ca3f80416b7bf2f28Daniel Dunbar e = MD->param_end(); i != e; ++i) 68541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar ArgTys.push_back((*i)->getType()); 69541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar return getFunctionInfo(MD->getResultType(), ArgTys); 700dbe227feccf6a8dbadfff8ca3f80416b7bf2f28Daniel Dunbar} 710dbe227feccf6a8dbadfff8ca3f80416b7bf2f28Daniel Dunbar 72541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbarconst CGFunctionInfo &CodeGenTypes::getFunctionInfo(QualType ResTy, 73541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar const CallArgList &Args) { 74541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar // FIXME: Kill copy. 75541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar llvm::SmallVector<QualType, 16> ArgTys; 76725ad31086e3d6c41afa10c43db44f2e7060a961Daniel Dunbar for (CallArgList::const_iterator i = Args.begin(), e = Args.end(); 77725ad31086e3d6c41afa10c43db44f2e7060a961Daniel Dunbar i != e; ++i) 78541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar ArgTys.push_back(i->second); 79541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar return getFunctionInfo(ResTy, ArgTys); 800dbe227feccf6a8dbadfff8ca3f80416b7bf2f28Daniel Dunbar} 810dbe227feccf6a8dbadfff8ca3f80416b7bf2f28Daniel Dunbar 82541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbarconst CGFunctionInfo &CodeGenTypes::getFunctionInfo(QualType ResTy, 83541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar const FunctionArgList &Args) { 84541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar // FIXME: Kill copy. 85541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar llvm::SmallVector<QualType, 16> ArgTys; 86bb36d331f439f49859efcfb4435c61762fbba6f9Daniel Dunbar for (FunctionArgList::const_iterator i = Args.begin(), e = Args.end(); 87bb36d331f439f49859efcfb4435c61762fbba6f9Daniel Dunbar i != e; ++i) 88541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar ArgTys.push_back(i->second); 89541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar return getFunctionInfo(ResTy, ArgTys); 90541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar} 91541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar 92541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbarconst CGFunctionInfo &CodeGenTypes::getFunctionInfo(QualType ResTy, 93541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar const llvm::SmallVector<QualType, 16> &ArgTys) { 9440a6be686e5d5bb4198f1affda574e8a4b3a7710Daniel Dunbar // Lookup or create unique function info. 9540a6be686e5d5bb4198f1affda574e8a4b3a7710Daniel Dunbar llvm::FoldingSetNodeID ID; 9640a6be686e5d5bb4198f1affda574e8a4b3a7710Daniel Dunbar CGFunctionInfo::Profile(ID, ResTy, ArgTys.begin(), ArgTys.end()); 9740a6be686e5d5bb4198f1affda574e8a4b3a7710Daniel Dunbar 9840a6be686e5d5bb4198f1affda574e8a4b3a7710Daniel Dunbar void *InsertPos = 0; 9940a6be686e5d5bb4198f1affda574e8a4b3a7710Daniel Dunbar CGFunctionInfo *FI = FunctionInfos.FindNodeOrInsertPos(ID, InsertPos); 10040a6be686e5d5bb4198f1affda574e8a4b3a7710Daniel Dunbar if (FI) 10140a6be686e5d5bb4198f1affda574e8a4b3a7710Daniel Dunbar return *FI; 10240a6be686e5d5bb4198f1affda574e8a4b3a7710Daniel Dunbar 10388c2fa96be989571b4afb6229f0ef5a3ef4450cbDaniel Dunbar // Construct the function info. 10440a6be686e5d5bb4198f1affda574e8a4b3a7710Daniel Dunbar FI = new CGFunctionInfo(ResTy, ArgTys); 10535e67d4387bbe3e7e17ee6b17eaa42eebb0eb9f1Daniel Dunbar FunctionInfos.InsertNode(FI, InsertPos); 106541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar 10788c2fa96be989571b4afb6229f0ef5a3ef4450cbDaniel Dunbar // Compute ABI information. 1086bad2658b48264629db595f944a3fbe07f61b4e9Daniel Dunbar getABIInfo().computeInfo(*FI, getContext()); 109541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar 11088c2fa96be989571b4afb6229f0ef5a3ef4450cbDaniel Dunbar return *FI; 1110dbe227feccf6a8dbadfff8ca3f80416b7bf2f28Daniel Dunbar} 11217b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar 11317b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar/***/ 11417b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar 1156b1da0ea19c12346192f5ea4d70872c13bfcc82aDaniel DunbarABIInfo::~ABIInfo() {} 1166b1da0ea19c12346192f5ea4d70872c13bfcc82aDaniel Dunbar 1176f7279bf98e31356306386b2c200820a76b491cfDaniel Dunbarvoid ABIArgInfo::dump() const { 1186f7279bf98e31356306386b2c200820a76b491cfDaniel Dunbar fprintf(stderr, "(ABIArgInfo Kind="); 1196f7279bf98e31356306386b2c200820a76b491cfDaniel Dunbar switch (TheKind) { 1206f7279bf98e31356306386b2c200820a76b491cfDaniel Dunbar case Direct: 1216f7279bf98e31356306386b2c200820a76b491cfDaniel Dunbar fprintf(stderr, "Direct"); 1226f7279bf98e31356306386b2c200820a76b491cfDaniel Dunbar break; 1236f7279bf98e31356306386b2c200820a76b491cfDaniel Dunbar case Ignore: 1246f7279bf98e31356306386b2c200820a76b491cfDaniel Dunbar fprintf(stderr, "Ignore"); 1256f7279bf98e31356306386b2c200820a76b491cfDaniel Dunbar break; 1266f7279bf98e31356306386b2c200820a76b491cfDaniel Dunbar case Coerce: 1276f7279bf98e31356306386b2c200820a76b491cfDaniel Dunbar fprintf(stderr, "Coerce Type="); 1286f7279bf98e31356306386b2c200820a76b491cfDaniel Dunbar getCoerceToType()->print(llvm::errs()); 1296f7279bf98e31356306386b2c200820a76b491cfDaniel Dunbar // FIXME: This is ridiculous. 1306f7279bf98e31356306386b2c200820a76b491cfDaniel Dunbar llvm::errs().flush(); 1316f7279bf98e31356306386b2c200820a76b491cfDaniel Dunbar break; 13211e383aa491a23ebd4a49688a09984c5e16a2e34Daniel Dunbar case Indirect: 13311e383aa491a23ebd4a49688a09984c5e16a2e34Daniel Dunbar fprintf(stderr, "Indirect Align=%d", getIndirectAlign()); 1346f7279bf98e31356306386b2c200820a76b491cfDaniel Dunbar break; 1356f7279bf98e31356306386b2c200820a76b491cfDaniel Dunbar case Expand: 1366f7279bf98e31356306386b2c200820a76b491cfDaniel Dunbar fprintf(stderr, "Expand"); 1376f7279bf98e31356306386b2c200820a76b491cfDaniel Dunbar break; 1386f7279bf98e31356306386b2c200820a76b491cfDaniel Dunbar } 1396f7279bf98e31356306386b2c200820a76b491cfDaniel Dunbar fprintf(stderr, ")\n"); 1406f7279bf98e31356306386b2c200820a76b491cfDaniel Dunbar} 1416f7279bf98e31356306386b2c200820a76b491cfDaniel Dunbar 1426f7279bf98e31356306386b2c200820a76b491cfDaniel Dunbar/***/ 1436f7279bf98e31356306386b2c200820a76b491cfDaniel Dunbar 144834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar/// isEmptyStruct - Return true iff a structure has no non-empty 145834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar/// members. Note that a structure with a flexible array member is not 146834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar/// considered empty. 147834af456588587194337bb32671fb9329e73a7f7Daniel Dunbarstatic bool isEmptyStruct(QualType T) { 148834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar const RecordType *RT = T->getAsStructureType(); 149834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar if (!RT) 150834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar return 0; 151834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar const RecordDecl *RD = RT->getDecl(); 152834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar if (RD->hasFlexibleArrayMember()) 153834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar return false; 154f8d49f64ef6ab7e632717a31631fc289aab69428Douglas Gregor for (RecordDecl::field_iterator i = RD->field_begin(), 155834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar e = RD->field_end(); i != e; ++i) { 156834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar const FieldDecl *FD = *i; 157834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar if (!isEmptyStruct(FD->getType())) 158834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar return false; 159834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar } 160834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar return true; 161834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar} 162834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar 163834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar/// isSingleElementStruct - Determine if a structure is a "single 164834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar/// element struct", i.e. it has exactly one non-empty field or 165834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar/// exactly one field which is itself a single element 166834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar/// struct. Structures with flexible array members are never 167834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar/// considered single element structs. 168834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar/// 169834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar/// \return The field declaration for the single non-empty field, if 170834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar/// it exists. 171834af456588587194337bb32671fb9329e73a7f7Daniel Dunbarstatic const FieldDecl *isSingleElementStruct(QualType T) { 172834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar const RecordType *RT = T->getAsStructureType(); 173834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar if (!RT) 174834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar return 0; 175834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar 176834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar const RecordDecl *RD = RT->getDecl(); 177834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar if (RD->hasFlexibleArrayMember()) 178834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar return 0; 179834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar 180834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar const FieldDecl *Found = 0; 181f8d49f64ef6ab7e632717a31631fc289aab69428Douglas Gregor for (RecordDecl::field_iterator i = RD->field_begin(), 182834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar e = RD->field_end(); i != e; ++i) { 183834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar const FieldDecl *FD = *i; 184834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar QualType FT = FD->getType(); 185834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar 186834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar if (isEmptyStruct(FT)) { 187834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar // Ignore 188834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar } else if (Found) { 189834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar return 0; 190834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar } else if (!CodeGenFunction::hasAggregateLLVMType(FT)) { 191834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar Found = FD; 192834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar } else { 193834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar Found = isSingleElementStruct(FT); 194834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar if (!Found) 195834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar return 0; 196834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar } 197834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar } 198834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar 199834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar return Found; 200834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar} 201834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar 202834af456588587194337bb32671fb9329e73a7f7Daniel Dunbarstatic bool is32Or64BitBasicType(QualType Ty, ASTContext &Context) { 203834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar if (!Ty->getAsBuiltinType() && !Ty->isPointerType()) 204834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar return false; 205834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar 206834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar uint64_t Size = Context.getTypeSize(Ty); 207834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar return Size == 32 || Size == 64; 208834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar} 209834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar 210834af456588587194337bb32671fb9329e73a7f7Daniel Dunbarstatic bool areAllFields32Or64BitBasicType(const RecordDecl *RD, 211834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar ASTContext &Context) { 212f8d49f64ef6ab7e632717a31631fc289aab69428Douglas Gregor for (RecordDecl::field_iterator i = RD->field_begin(), 213834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar e = RD->field_end(); i != e; ++i) { 214834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar const FieldDecl *FD = *i; 215834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar 216834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar if (!is32Or64BitBasicType(FD->getType(), Context)) 217834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar return false; 218834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar 219834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar // If this is a bit-field we need to make sure it is still a 220834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar // 32-bit or 64-bit type. 221834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar if (Expr *BW = FD->getBitWidth()) { 222834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar unsigned Width = BW->getIntegerConstantExprValue(Context).getZExtValue(); 223834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar if (Width <= 16) 224834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar return false; 225834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar } 226834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar } 227834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar return true; 228834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar} 229834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar 2306b1da0ea19c12346192f5ea4d70872c13bfcc82aDaniel Dunbarnamespace { 2316b1da0ea19c12346192f5ea4d70872c13bfcc82aDaniel Dunbar/// DefaultABIInfo - The default implementation for ABI specific 2326b1da0ea19c12346192f5ea4d70872c13bfcc82aDaniel Dunbar/// details. This implementation provides information which results in 2336bad2658b48264629db595f944a3fbe07f61b4e9Daniel Dunbar/// self-consistent and sensible LLVM IR generation, but does not 2346bad2658b48264629db595f944a3fbe07f61b4e9Daniel Dunbar/// conform to any particular ABI. 2356b1da0ea19c12346192f5ea4d70872c13bfcc82aDaniel Dunbarclass DefaultABIInfo : public ABIInfo { 2366bad2658b48264629db595f944a3fbe07f61b4e9Daniel Dunbar ABIArgInfo classifyReturnType(QualType RetTy, 2376bad2658b48264629db595f944a3fbe07f61b4e9Daniel Dunbar ASTContext &Context) const; 2386bad2658b48264629db595f944a3fbe07f61b4e9Daniel Dunbar 2396bad2658b48264629db595f944a3fbe07f61b4e9Daniel Dunbar ABIArgInfo classifyArgumentType(QualType RetTy, 2406bad2658b48264629db595f944a3fbe07f61b4e9Daniel Dunbar ASTContext &Context) const; 2416bad2658b48264629db595f944a3fbe07f61b4e9Daniel Dunbar 2426bad2658b48264629db595f944a3fbe07f61b4e9Daniel Dunbar virtual void computeInfo(CGFunctionInfo &FI, ASTContext &Context) const { 2436bad2658b48264629db595f944a3fbe07f61b4e9Daniel Dunbar FI.getReturnInfo() = classifyReturnType(FI.getReturnType(), Context); 2446bad2658b48264629db595f944a3fbe07f61b4e9Daniel Dunbar for (CGFunctionInfo::arg_iterator it = FI.arg_begin(), ie = FI.arg_end(); 2456bad2658b48264629db595f944a3fbe07f61b4e9Daniel Dunbar it != ie; ++it) 2466bad2658b48264629db595f944a3fbe07f61b4e9Daniel Dunbar it->info = classifyArgumentType(it->type, Context); 2476bad2658b48264629db595f944a3fbe07f61b4e9Daniel Dunbar } 248b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbar 249b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbar virtual llvm::Value *EmitVAArg(llvm::Value *VAListAddr, QualType Ty, 250b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbar CodeGenFunction &CGF) const; 2516b1da0ea19c12346192f5ea4d70872c13bfcc82aDaniel Dunbar}; 2526b1da0ea19c12346192f5ea4d70872c13bfcc82aDaniel Dunbar 2536b1da0ea19c12346192f5ea4d70872c13bfcc82aDaniel Dunbar/// X86_32ABIInfo - The X86-32 ABI information. 2546b1da0ea19c12346192f5ea4d70872c13bfcc82aDaniel Dunbarclass X86_32ABIInfo : public ABIInfo { 2556b1da0ea19c12346192f5ea4d70872c13bfcc82aDaniel Dunbarpublic: 2566bad2658b48264629db595f944a3fbe07f61b4e9Daniel Dunbar ABIArgInfo classifyReturnType(QualType RetTy, 2576bad2658b48264629db595f944a3fbe07f61b4e9Daniel Dunbar ASTContext &Context) const; 2586b1da0ea19c12346192f5ea4d70872c13bfcc82aDaniel Dunbar 2596bad2658b48264629db595f944a3fbe07f61b4e9Daniel Dunbar ABIArgInfo classifyArgumentType(QualType RetTy, 2606bad2658b48264629db595f944a3fbe07f61b4e9Daniel Dunbar ASTContext &Context) const; 2616bad2658b48264629db595f944a3fbe07f61b4e9Daniel Dunbar 2626bad2658b48264629db595f944a3fbe07f61b4e9Daniel Dunbar virtual void computeInfo(CGFunctionInfo &FI, ASTContext &Context) const { 2636bad2658b48264629db595f944a3fbe07f61b4e9Daniel Dunbar FI.getReturnInfo() = classifyReturnType(FI.getReturnType(), Context); 2646bad2658b48264629db595f944a3fbe07f61b4e9Daniel Dunbar for (CGFunctionInfo::arg_iterator it = FI.arg_begin(), ie = FI.arg_end(); 2656bad2658b48264629db595f944a3fbe07f61b4e9Daniel Dunbar it != ie; ++it) 2666bad2658b48264629db595f944a3fbe07f61b4e9Daniel Dunbar it->info = classifyArgumentType(it->type, Context); 2676bad2658b48264629db595f944a3fbe07f61b4e9Daniel Dunbar } 268b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbar 269b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbar virtual llvm::Value *EmitVAArg(llvm::Value *VAListAddr, QualType Ty, 270b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbar CodeGenFunction &CGF) const; 2716b1da0ea19c12346192f5ea4d70872c13bfcc82aDaniel Dunbar}; 2726b1da0ea19c12346192f5ea4d70872c13bfcc82aDaniel Dunbar} 2736b1da0ea19c12346192f5ea4d70872c13bfcc82aDaniel Dunbar 2746b1da0ea19c12346192f5ea4d70872c13bfcc82aDaniel DunbarABIArgInfo X86_32ABIInfo::classifyReturnType(QualType RetTy, 2756b1da0ea19c12346192f5ea4d70872c13bfcc82aDaniel Dunbar ASTContext &Context) const { 2760bcc52114e37a8d152d9a05095ee7f7687c9aa94Daniel Dunbar if (RetTy->isVoidType()) { 2770bcc52114e37a8d152d9a05095ee7f7687c9aa94Daniel Dunbar return ABIArgInfo::getIgnore(); 2780bcc52114e37a8d152d9a05095ee7f7687c9aa94Daniel Dunbar } else if (CodeGenFunction::hasAggregateLLVMType(RetTy)) { 279834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar // Classify "single element" structs as their element type. 280834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar const FieldDecl *SeltFD = isSingleElementStruct(RetTy); 281834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar if (SeltFD) { 282834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar QualType SeltTy = SeltFD->getType()->getDesugaredType(); 283834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar if (const BuiltinType *BT = SeltTy->getAsBuiltinType()) { 284834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar // FIXME: This is gross, it would be nice if we could just 285834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar // pass back SeltTy and have clients deal with it. Is it worth 286834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar // supporting coerce to both LLVM and clang Types? 287834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar if (BT->isIntegerType()) { 288834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar uint64_t Size = Context.getTypeSize(SeltTy); 289834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar return ABIArgInfo::getCoerce(llvm::IntegerType::get((unsigned) Size)); 290834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar } else if (BT->getKind() == BuiltinType::Float) { 291834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar return ABIArgInfo::getCoerce(llvm::Type::FloatTy); 292834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar } else if (BT->getKind() == BuiltinType::Double) { 293834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar return ABIArgInfo::getCoerce(llvm::Type::DoubleTy); 294834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar } 295834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar } else if (SeltTy->isPointerType()) { 296834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar // FIXME: It would be really nice if this could come out as 297834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar // the proper pointer type. 298834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar llvm::Type *PtrTy = 299834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar llvm::PointerType::getUnqual(llvm::Type::Int8Ty); 300834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar return ABIArgInfo::getCoerce(PtrTy); 301834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar } 302834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar } 303834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar 304639ffe47097d01249b98b7acd102aaad6697b43aDaniel Dunbar uint64_t Size = Context.getTypeSize(RetTy); 305639ffe47097d01249b98b7acd102aaad6697b43aDaniel Dunbar if (Size == 8) { 306639ffe47097d01249b98b7acd102aaad6697b43aDaniel Dunbar return ABIArgInfo::getCoerce(llvm::Type::Int8Ty); 307639ffe47097d01249b98b7acd102aaad6697b43aDaniel Dunbar } else if (Size == 16) { 308639ffe47097d01249b98b7acd102aaad6697b43aDaniel Dunbar return ABIArgInfo::getCoerce(llvm::Type::Int16Ty); 309639ffe47097d01249b98b7acd102aaad6697b43aDaniel Dunbar } else if (Size == 32) { 310639ffe47097d01249b98b7acd102aaad6697b43aDaniel Dunbar return ABIArgInfo::getCoerce(llvm::Type::Int32Ty); 311639ffe47097d01249b98b7acd102aaad6697b43aDaniel Dunbar } else if (Size == 64) { 312639ffe47097d01249b98b7acd102aaad6697b43aDaniel Dunbar return ABIArgInfo::getCoerce(llvm::Type::Int64Ty); 313639ffe47097d01249b98b7acd102aaad6697b43aDaniel Dunbar } else { 31411e383aa491a23ebd4a49688a09984c5e16a2e34Daniel Dunbar return ABIArgInfo::getIndirect(0); 315639ffe47097d01249b98b7acd102aaad6697b43aDaniel Dunbar } 3162c8e0f32b9c33686be23c70add0b97490903de9fDaniel Dunbar } else { 3170bcc52114e37a8d152d9a05095ee7f7687c9aa94Daniel Dunbar return ABIArgInfo::getDirect(); 3182c8e0f32b9c33686be23c70add0b97490903de9fDaniel Dunbar } 3192c8e0f32b9c33686be23c70add0b97490903de9fDaniel Dunbar} 3202c8e0f32b9c33686be23c70add0b97490903de9fDaniel Dunbar 3216b1da0ea19c12346192f5ea4d70872c13bfcc82aDaniel DunbarABIArgInfo X86_32ABIInfo::classifyArgumentType(QualType Ty, 322b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbar ASTContext &Context) const { 32311e383aa491a23ebd4a49688a09984c5e16a2e34Daniel Dunbar // FIXME: Set alignment on indirect arguments. 324f035738e346da0a82538ab236aef218a27373635Daniel Dunbar if (CodeGenFunction::hasAggregateLLVMType(Ty)) { 32511e383aa491a23ebd4a49688a09984c5e16a2e34Daniel Dunbar // Structures with flexible arrays are always indirect. 326834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar if (const RecordType *RT = Ty->getAsStructureType()) 327834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar if (RT->getDecl()->hasFlexibleArrayMember()) 32811e383aa491a23ebd4a49688a09984c5e16a2e34Daniel Dunbar return ABIArgInfo::getIndirect(0); 329834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar 3303170c93d26bdc8b360c4ea3b1cedba50bbd818c1Daniel Dunbar // Ignore empty structs. 331834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar uint64_t Size = Context.getTypeSize(Ty); 332834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar if (Ty->isStructureType() && Size == 0) 3333170c93d26bdc8b360c4ea3b1cedba50bbd818c1Daniel Dunbar return ABIArgInfo::getIgnore(); 334834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar 335834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar // Expand structs with size <= 128-bits which consist only of 336834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar // basic types (int, long long, float, double, xxx*). This is 337834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar // non-recursive and does not ignore empty fields. 338834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar if (const RecordType *RT = Ty->getAsStructureType()) { 339834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar if (Context.getTypeSize(Ty) <= 4*32 && 340834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar areAllFields32Or64BitBasicType(RT->getDecl(), Context)) 341834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar return ABIArgInfo::getExpand(); 342834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar } 343834af456588587194337bb32671fb9329e73a7f7Daniel Dunbar 34411e383aa491a23ebd4a49688a09984c5e16a2e34Daniel Dunbar return ABIArgInfo::getIndirect(0); 3458951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar } else { 3460bcc52114e37a8d152d9a05095ee7f7687c9aa94Daniel Dunbar return ABIArgInfo::getDirect(); 3478951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar } 3488951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar} 3498951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar 350b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbarllvm::Value *X86_32ABIInfo::EmitVAArg(llvm::Value *VAListAddr, QualType Ty, 351b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbar CodeGenFunction &CGF) const { 352b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbar const llvm::Type *BP = llvm::PointerType::getUnqual(llvm::Type::Int8Ty); 353b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbar const llvm::Type *BPP = llvm::PointerType::getUnqual(BP); 354b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbar 355b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbar CGBuilderTy &Builder = CGF.Builder; 356b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbar llvm::Value *VAListAddrAsBPP = Builder.CreateBitCast(VAListAddr, BPP, 357b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbar "ap"); 358b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbar llvm::Value *Addr = Builder.CreateLoad(VAListAddrAsBPP, "ap.cur"); 359b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbar llvm::Type *PTy = 360b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbar llvm::PointerType::getUnqual(CGF.ConvertType(Ty)); 361b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbar llvm::Value *AddrTyped = Builder.CreateBitCast(Addr, PTy); 362b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbar 363570f0cf734f321b902eb18dd1b07f53543f0a393Daniel Dunbar uint64_t Offset = 364570f0cf734f321b902eb18dd1b07f53543f0a393Daniel Dunbar llvm::RoundUpToAlignment(CGF.getContext().getTypeSize(Ty) / 8, 4); 365b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbar llvm::Value *NextAddr = 366b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbar Builder.CreateGEP(Addr, 367570f0cf734f321b902eb18dd1b07f53543f0a393Daniel Dunbar llvm::ConstantInt::get(llvm::Type::Int32Ty, Offset), 368b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbar "ap.next"); 369b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbar Builder.CreateStore(NextAddr, VAListAddrAsBPP); 370b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbar 371b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbar return AddrTyped; 372b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbar} 373b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbar 3746f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbarnamespace { 375c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar/// X86_64ABIInfo - The X86_64 ABI information. 3766f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbarclass X86_64ABIInfo : public ABIInfo { 3776f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar enum Class { 3786f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar Integer = 0, 3796f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar SSE, 3806f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar SSEUp, 3816f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar X87, 3826f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar X87Up, 3836f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar ComplexX87, 3846f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar NoClass, 3856f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar Memory 3866f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar }; 3876f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar 3888562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar /// merge - Implement the X86_64 ABI merging algorithm. 3898562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar /// 390c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar /// Merge an accumulating classification \arg Accum with a field 391c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar /// classification \arg Field. 392c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar /// 393c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar /// \param Accum - The accumulating classification. This should 394c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar /// always be either NoClass or the result of a previous merge 395c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar /// call. In addition, this should never be Memory (the caller 396c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar /// should just return Memory for the aggregate). 397c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar Class merge(Class Accum, Class Field) const; 3988562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar 3996f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar /// classify - Determine the x86_64 register classes in which the 4006f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar /// given type T should be passed. 4016f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar /// 402c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar /// \param Lo - The classification for the parts of the type 403c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar /// residing in the low word of the containing object. 404c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar /// 405c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar /// \param Hi - The classification for the parts of the type 406c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar /// residing in the high word of the containing object. 407c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar /// 408c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar /// \param OffsetBase - The bit offset of this type in the 409cdf920ed6c610e21fc899ada93370a68c900d180Daniel Dunbar /// containing object. Some parameters are classified different 410cdf920ed6c610e21fc899ada93370a68c900d180Daniel Dunbar /// depending on whether they straddle an eightbyte boundary. 4116f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar /// 4126f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar /// If a word is unused its result will be NoClass; if a type should 4136f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar /// be passed in Memory then at least the classification of \arg Lo 4146f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar /// will be Memory. 4156f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar /// 4166f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar /// The \arg Lo class will be NoClass iff the argument is ignored. 4176f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar /// 4186f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar /// If the \arg Lo class is ComplexX87, then the \arg Hi class will 4196e53e9b8795022ed08d5e59b8d78b2c616c2ef9aDaniel Dunbar /// also be ComplexX87. 420e620ecdd4104285e09fe585e90f720459b80259bDaniel Dunbar void classify(QualType T, ASTContext &Context, uint64_t OffsetBase, 4216f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar Class &Lo, Class &Hi) const; 422c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar 423644f4c3fe4130c7be75d6191340ba8d857ba0730Daniel Dunbar /// getCoerceResult - Given a source type \arg Ty and an LLVM type 424644f4c3fe4130c7be75d6191340ba8d857ba0730Daniel Dunbar /// to coerce to, chose the best way to pass Ty in the same place 425644f4c3fe4130c7be75d6191340ba8d857ba0730Daniel Dunbar /// that \arg CoerceTo would be passed, but while keeping the 426644f4c3fe4130c7be75d6191340ba8d857ba0730Daniel Dunbar /// emitted code as simple as possible. 427644f4c3fe4130c7be75d6191340ba8d857ba0730Daniel Dunbar /// 428644f4c3fe4130c7be75d6191340ba8d857ba0730Daniel Dunbar /// FIXME: Note, this should be cleaned up to just take an 429644f4c3fe4130c7be75d6191340ba8d857ba0730Daniel Dunbar /// enumeration of all the ways we might want to pass things, 430644f4c3fe4130c7be75d6191340ba8d857ba0730Daniel Dunbar /// instead of constructing an LLVM type. This makes this code more 431644f4c3fe4130c7be75d6191340ba8d857ba0730Daniel Dunbar /// explicit, and it makes it clearer that we are also doing this 432644f4c3fe4130c7be75d6191340ba8d857ba0730Daniel Dunbar /// for correctness in the case of passing scalar types. 433644f4c3fe4130c7be75d6191340ba8d857ba0730Daniel Dunbar ABIArgInfo getCoerceResult(QualType Ty, 434644f4c3fe4130c7be75d6191340ba8d857ba0730Daniel Dunbar const llvm::Type *CoerceTo, 435644f4c3fe4130c7be75d6191340ba8d857ba0730Daniel Dunbar ASTContext &Context) const; 436644f4c3fe4130c7be75d6191340ba8d857ba0730Daniel Dunbar 4376bad2658b48264629db595f944a3fbe07f61b4e9Daniel Dunbar ABIArgInfo classifyReturnType(QualType RetTy, 43859e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar ASTContext &Context) const; 43959e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar 44059e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar ABIArgInfo classifyArgumentType(QualType Ty, 44159e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar ASTContext &Context, 4423b4e9cd0655467f66332575b816a958d319e8ca6Daniel Dunbar unsigned &neededInt, 4433b4e9cd0655467f66332575b816a958d319e8ca6Daniel Dunbar unsigned &neededSSE) const; 44459e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar 44559e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbarpublic: 44659e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar virtual void computeInfo(CGFunctionInfo &FI, ASTContext &Context) const; 447b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbar 448b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbar virtual llvm::Value *EmitVAArg(llvm::Value *VAListAddr, QualType Ty, 449b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbar CodeGenFunction &CGF) const; 4506f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar}; 4516f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar} 4526f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar 453c450357c436c05aa02ef88d406de962d98ac50beDaniel DunbarX86_64ABIInfo::Class X86_64ABIInfo::merge(Class Accum, 454c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar Class Field) const { 4558562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar // AMD64-ABI 3.2.3p2: Rule 4. Each field of an object is 4568562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar // classified recursively so that always two fields are 4578562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar // considered. The resulting class is calculated according to 4588562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar // the classes of the fields in the eightbyte: 4598562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar // 4608562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar // (a) If both classes are equal, this is the resulting class. 4618562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar // 4628562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar // (b) If one of the classes is NO_CLASS, the resulting class is 4638562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar // the other class. 4648562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar // 4658562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar // (c) If one of the classes is MEMORY, the result is the MEMORY 4668562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar // class. 4678562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar // 4688562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar // (d) If one of the classes is INTEGER, the result is the 4698562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar // INTEGER. 4708562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar // 4718562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar // (e) If one of the classes is X87, X87UP, COMPLEX_X87 class, 4728562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar // MEMORY is used as class. 4738562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar // 4748562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar // (f) Otherwise class SSE is used. 475c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar assert((Accum == NoClass || Accum == Integer || 476c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar Accum == SSE || Accum == SSEUp) && 477c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar "Invalid accumulated classification during merge."); 478c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar if (Accum == Field || Field == NoClass) 479c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar return Accum; 480c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar else if (Field == Memory) 481c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar return Memory; 482c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar else if (Accum == NoClass) 483c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar return Field; 484c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar else if (Accum == Integer || Field == Integer) 485c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar return Integer; 486c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar else if (Field == X87 || Field == X87Up || Field == ComplexX87) 487c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar return Memory; 4888562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar else 489c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar return SSE; 4908562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar} 4918562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar 4926f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbarvoid X86_64ABIInfo::classify(QualType Ty, 4936f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar ASTContext &Context, 494e620ecdd4104285e09fe585e90f720459b80259bDaniel Dunbar uint64_t OffsetBase, 4956f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar Class &Lo, Class &Hi) const { 4969a82b52ae83fa1c09266b2fa5f0375392f7d127fDaniel Dunbar // FIXME: This code can be simplified by introducing a simple value 4979a82b52ae83fa1c09266b2fa5f0375392f7d127fDaniel Dunbar // class for Class pairs with appropriate constructor methods for 4989a82b52ae83fa1c09266b2fa5f0375392f7d127fDaniel Dunbar // the various situations. 4999a82b52ae83fa1c09266b2fa5f0375392f7d127fDaniel Dunbar 500c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar Lo = Hi = NoClass; 501c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar 502c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar Class &Current = OffsetBase < 64 ? Lo : Hi; 503c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar Current = Memory; 504c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar 5056f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar if (const BuiltinType *BT = Ty->getAsBuiltinType()) { 5066f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar BuiltinType::Kind k = BT->getKind(); 5076f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar 50811434925bf81c932c6c8fe3533bc0ba900d50dc2Daniel Dunbar if (k == BuiltinType::Void) { 509c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar Current = NoClass; 51011434925bf81c932c6c8fe3533bc0ba900d50dc2Daniel Dunbar } else if (k >= BuiltinType::Bool && k <= BuiltinType::LongLong) { 511c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar Current = Integer; 5126f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar } else if (k == BuiltinType::Float || k == BuiltinType::Double) { 513c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar Current = SSE; 5146f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar } else if (k == BuiltinType::LongDouble) { 5156f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar Lo = X87; 5166f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar Hi = X87Up; 5176f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar } 5187a6605d8be0fc30f1846657ee8133387b1b85296Daniel Dunbar // FIXME: _Decimal32 and _Decimal64 are SSE. 5197a6605d8be0fc30f1846657ee8133387b1b85296Daniel Dunbar // FIXME: _float128 and _Decimal128 are (SSE, SSEUp). 5206f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar // FIXME: __int128 is (Integer, Integer). 5216f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar } else if (Ty->isPointerLikeType() || Ty->isBlockPointerType() || 5226f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar Ty->isObjCQualifiedInterfaceType()) { 523c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar Current = Integer; 5247a6605d8be0fc30f1846657ee8133387b1b85296Daniel Dunbar } else if (const VectorType *VT = Ty->getAsVectorType()) { 525e620ecdd4104285e09fe585e90f720459b80259bDaniel Dunbar uint64_t Size = Context.getTypeSize(VT); 5267a6605d8be0fc30f1846657ee8133387b1b85296Daniel Dunbar if (Size == 64) { 5270af9929e1ba8e5b9ae0a8999439736d249599bbeDaniel Dunbar // gcc passes <1 x double> in memory. :( 5280af9929e1ba8e5b9ae0a8999439736d249599bbeDaniel Dunbar if (VT->getElementType()->isSpecificBuiltinType(BuiltinType::Double)) 529d4cd1b07169c698bd003be102bd73a7da7e24b25Daniel Dunbar return; 5300af9929e1ba8e5b9ae0a8999439736d249599bbeDaniel Dunbar 5310af9929e1ba8e5b9ae0a8999439736d249599bbeDaniel Dunbar // gcc passes <1 x long long> as INTEGER. 5320af9929e1ba8e5b9ae0a8999439736d249599bbeDaniel Dunbar if (VT->getElementType()->isSpecificBuiltinType(BuiltinType::LongLong)) 5330af9929e1ba8e5b9ae0a8999439736d249599bbeDaniel Dunbar Current = Integer; 5340af9929e1ba8e5b9ae0a8999439736d249599bbeDaniel Dunbar else 5350af9929e1ba8e5b9ae0a8999439736d249599bbeDaniel Dunbar Current = SSE; 536e33edf150adc44a34c5f6c8ed6109f6dcd2f70c6Daniel Dunbar 537e33edf150adc44a34c5f6c8ed6109f6dcd2f70c6Daniel Dunbar // If this type crosses an eightbyte boundary, it should be 538e33edf150adc44a34c5f6c8ed6109f6dcd2f70c6Daniel Dunbar // split. 539cdf920ed6c610e21fc899ada93370a68c900d180Daniel Dunbar if (OffsetBase && OffsetBase != 64) 540e33edf150adc44a34c5f6c8ed6109f6dcd2f70c6Daniel Dunbar Hi = Lo; 5417a6605d8be0fc30f1846657ee8133387b1b85296Daniel Dunbar } else if (Size == 128) { 5427a6605d8be0fc30f1846657ee8133387b1b85296Daniel Dunbar Lo = SSE; 5437a6605d8be0fc30f1846657ee8133387b1b85296Daniel Dunbar Hi = SSEUp; 5447a6605d8be0fc30f1846657ee8133387b1b85296Daniel Dunbar } 5456f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar } else if (const ComplexType *CT = Ty->getAsComplexType()) { 5463327f6ead9362e5689674a4aaab5b7f23ea0dea3Daniel Dunbar QualType ET = Context.getCanonicalType(CT->getElementType()); 5476f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar 548e33edf150adc44a34c5f6c8ed6109f6dcd2f70c6Daniel Dunbar uint64_t Size = Context.getTypeSize(Ty); 5490af9929e1ba8e5b9ae0a8999439736d249599bbeDaniel Dunbar if (ET->isIntegralType()) { 550eac48dc189154eea5067310c5dd257dfe07c29aaDaniel Dunbar if (Size <= 64) 551c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar Current = Integer; 552eac48dc189154eea5067310c5dd257dfe07c29aaDaniel Dunbar else if (Size <= 128) 553eac48dc189154eea5067310c5dd257dfe07c29aaDaniel Dunbar Lo = Hi = Integer; 554eac48dc189154eea5067310c5dd257dfe07c29aaDaniel Dunbar } else if (ET == Context.FloatTy) 555c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar Current = SSE; 5566f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar else if (ET == Context.DoubleTy) 5576f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar Lo = Hi = SSE; 5586f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar else if (ET == Context.LongDoubleTy) 559c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar Current = ComplexX87; 560f04d69bbb25eb681fff1a108f13f67c6ca70cf6aDaniel Dunbar 561f04d69bbb25eb681fff1a108f13f67c6ca70cf6aDaniel Dunbar // If this complex type crosses an eightbyte boundary then it 562f04d69bbb25eb681fff1a108f13f67c6ca70cf6aDaniel Dunbar // should be split. 563cdf920ed6c610e21fc899ada93370a68c900d180Daniel Dunbar uint64_t EB_Real = (OffsetBase) / 64; 564cdf920ed6c610e21fc899ada93370a68c900d180Daniel Dunbar uint64_t EB_Imag = (OffsetBase + Context.getTypeSize(ET)) / 64; 565f04d69bbb25eb681fff1a108f13f67c6ca70cf6aDaniel Dunbar if (Hi == NoClass && EB_Real != EB_Imag) 566f04d69bbb25eb681fff1a108f13f67c6ca70cf6aDaniel Dunbar Hi = Lo; 5678562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar } else if (const ConstantArrayType *AT = Context.getAsConstantArrayType(Ty)) { 5688562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar // Arrays are treated like structures. 5698562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar 5708562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar uint64_t Size = Context.getTypeSize(Ty); 5718562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar 5728562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar // AMD64-ABI 3.2.3p2: Rule 1. If the size of an object is larger 5738562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar // than two eightbytes, ..., it has class MEMORY. 5748562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar if (Size > 128) 5758562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar return; 5768562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar 5778562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar // AMD64-ABI 3.2.3p2: Rule 1. If ..., or it contains unaligned 5788562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar // fields, it has class MEMORY. 5798562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar // 5808562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar // Only need to check alignment of array base. 581c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar if (OffsetBase % Context.getTypeAlign(AT->getElementType())) 5828562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar return; 5838562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar 5848562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar // Otherwise implement simplified merge. We could be smarter about 5858562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar // this, but it isn't worth it and would be harder to verify. 586c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar Current = NoClass; 5878562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar uint64_t EltSize = Context.getTypeSize(AT->getElementType()); 5888562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar uint64_t ArraySize = AT->getSize().getZExtValue(); 5898562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar for (uint64_t i=0, Offset=OffsetBase; i<ArraySize; ++i, Offset += EltSize) { 5908562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar Class FieldLo, FieldHi; 5918562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar classify(AT->getElementType(), Context, Offset, FieldLo, FieldHi); 592c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar Lo = merge(Lo, FieldLo); 593c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar Hi = merge(Hi, FieldHi); 594c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar if (Lo == Memory || Hi == Memory) 595c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar break; 5968562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar } 597c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar 598c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar // Do post merger cleanup (see below). Only case we worry about is Memory. 599c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar if (Hi == Memory) 600c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar Lo = Memory; 601c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar assert((Hi != SSEUp || Lo == SSE) && "Invalid SSEUp array classification."); 60299037e5a2118bc194251a8033a0885810bf61c95Daniel Dunbar } else if (const RecordType *RT = Ty->getAsRecordType()) { 603e620ecdd4104285e09fe585e90f720459b80259bDaniel Dunbar uint64_t Size = Context.getTypeSize(Ty); 60499037e5a2118bc194251a8033a0885810bf61c95Daniel Dunbar 60599037e5a2118bc194251a8033a0885810bf61c95Daniel Dunbar // AMD64-ABI 3.2.3p2: Rule 1. If the size of an object is larger 60699037e5a2118bc194251a8033a0885810bf61c95Daniel Dunbar // than two eightbytes, ..., it has class MEMORY. 60799037e5a2118bc194251a8033a0885810bf61c95Daniel Dunbar if (Size > 128) 60899037e5a2118bc194251a8033a0885810bf61c95Daniel Dunbar return; 60999037e5a2118bc194251a8033a0885810bf61c95Daniel Dunbar 61099037e5a2118bc194251a8033a0885810bf61c95Daniel Dunbar const RecordDecl *RD = RT->getDecl(); 61199037e5a2118bc194251a8033a0885810bf61c95Daniel Dunbar 61299037e5a2118bc194251a8033a0885810bf61c95Daniel Dunbar // Assume variable sized types are passed in memory. 61399037e5a2118bc194251a8033a0885810bf61c95Daniel Dunbar if (RD->hasFlexibleArrayMember()) 61499037e5a2118bc194251a8033a0885810bf61c95Daniel Dunbar return; 61599037e5a2118bc194251a8033a0885810bf61c95Daniel Dunbar 61699037e5a2118bc194251a8033a0885810bf61c95Daniel Dunbar const ASTRecordLayout &Layout = Context.getASTRecordLayout(RD); 61799037e5a2118bc194251a8033a0885810bf61c95Daniel Dunbar 61899037e5a2118bc194251a8033a0885810bf61c95Daniel Dunbar // Reset Lo class, this will be recomputed. 619c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar Current = NoClass; 62099037e5a2118bc194251a8033a0885810bf61c95Daniel Dunbar unsigned idx = 0; 62199037e5a2118bc194251a8033a0885810bf61c95Daniel Dunbar for (RecordDecl::field_iterator i = RD->field_begin(), 62299037e5a2118bc194251a8033a0885810bf61c95Daniel Dunbar e = RD->field_end(); i != e; ++i, ++idx) { 6238562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar uint64_t Offset = OffsetBase + Layout.getFieldOffset(idx); 624dd81d44fac2631e6ca9fe1f52366aea0f51b03e1Daniel Dunbar bool BitField = i->isBitField(); 62599037e5a2118bc194251a8033a0885810bf61c95Daniel Dunbar 6268562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar // AMD64-ABI 3.2.3p2: Rule 1. If ..., or it contains unaligned 6278562ae74ae0ff0a64b46ef5ebea8e7ce0f76fa00Daniel Dunbar // fields, it has class MEMORY. 628dd81d44fac2631e6ca9fe1f52366aea0f51b03e1Daniel Dunbar // 629dd81d44fac2631e6ca9fe1f52366aea0f51b03e1Daniel Dunbar // Note, skip this test for bitfields, see below. 630dd81d44fac2631e6ca9fe1f52366aea0f51b03e1Daniel Dunbar if (!BitField && Offset % Context.getTypeAlign(i->getType())) { 63199037e5a2118bc194251a8033a0885810bf61c95Daniel Dunbar Lo = Memory; 63299037e5a2118bc194251a8033a0885810bf61c95Daniel Dunbar return; 63399037e5a2118bc194251a8033a0885810bf61c95Daniel Dunbar } 63499037e5a2118bc194251a8033a0885810bf61c95Daniel Dunbar 63599037e5a2118bc194251a8033a0885810bf61c95Daniel Dunbar // Classify this field. 636c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar // 637c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar // AMD64-ABI 3.2.3p2: Rule 3. If the size of the aggregate 638c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar // exceeds a single eightbyte, each is classified 639c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar // separately. Each eightbyte gets initialized to class 640c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar // NO_CLASS. 64199037e5a2118bc194251a8033a0885810bf61c95Daniel Dunbar Class FieldLo, FieldHi; 642dd81d44fac2631e6ca9fe1f52366aea0f51b03e1Daniel Dunbar 643dd81d44fac2631e6ca9fe1f52366aea0f51b03e1Daniel Dunbar // Bitfields require special handling, they do not force the 644dd81d44fac2631e6ca9fe1f52366aea0f51b03e1Daniel Dunbar // structure to be passed in memory even if unaligned, and 645dd81d44fac2631e6ca9fe1f52366aea0f51b03e1Daniel Dunbar // therefore they can straddle an eightbyte. 646dd81d44fac2631e6ca9fe1f52366aea0f51b03e1Daniel Dunbar if (BitField) { 647dd81d44fac2631e6ca9fe1f52366aea0f51b03e1Daniel Dunbar uint64_t Offset = OffsetBase + Layout.getFieldOffset(idx); 648dd81d44fac2631e6ca9fe1f52366aea0f51b03e1Daniel Dunbar uint64_t Size = 649dd81d44fac2631e6ca9fe1f52366aea0f51b03e1Daniel Dunbar i->getBitWidth()->getIntegerConstantExprValue(Context).getZExtValue(); 650dd81d44fac2631e6ca9fe1f52366aea0f51b03e1Daniel Dunbar 651dd81d44fac2631e6ca9fe1f52366aea0f51b03e1Daniel Dunbar uint64_t EB_Lo = Offset / 64; 652dd81d44fac2631e6ca9fe1f52366aea0f51b03e1Daniel Dunbar uint64_t EB_Hi = (Offset + Size - 1) / 64; 653dd81d44fac2631e6ca9fe1f52366aea0f51b03e1Daniel Dunbar FieldLo = FieldHi = NoClass; 654dd81d44fac2631e6ca9fe1f52366aea0f51b03e1Daniel Dunbar if (EB_Lo) { 655dd81d44fac2631e6ca9fe1f52366aea0f51b03e1Daniel Dunbar assert(EB_Hi == EB_Lo && "Invalid classification, type > 16 bytes."); 656dd81d44fac2631e6ca9fe1f52366aea0f51b03e1Daniel Dunbar FieldLo = NoClass; 657dd81d44fac2631e6ca9fe1f52366aea0f51b03e1Daniel Dunbar FieldHi = Integer; 658dd81d44fac2631e6ca9fe1f52366aea0f51b03e1Daniel Dunbar } else { 659dd81d44fac2631e6ca9fe1f52366aea0f51b03e1Daniel Dunbar FieldLo = Integer; 660dd81d44fac2631e6ca9fe1f52366aea0f51b03e1Daniel Dunbar FieldHi = EB_Hi ? Integer : NoClass; 661dd81d44fac2631e6ca9fe1f52366aea0f51b03e1Daniel Dunbar } 662dd81d44fac2631e6ca9fe1f52366aea0f51b03e1Daniel Dunbar } else 663dd81d44fac2631e6ca9fe1f52366aea0f51b03e1Daniel Dunbar classify(i->getType(), Context, Offset, FieldLo, FieldHi); 664c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar Lo = merge(Lo, FieldLo); 665c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar Hi = merge(Hi, FieldHi); 666c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar if (Lo == Memory || Hi == Memory) 667c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar break; 66899037e5a2118bc194251a8033a0885810bf61c95Daniel Dunbar } 66999037e5a2118bc194251a8033a0885810bf61c95Daniel Dunbar 67099037e5a2118bc194251a8033a0885810bf61c95Daniel Dunbar // AMD64-ABI 3.2.3p2: Rule 5. Then a post merger cleanup is done: 67199037e5a2118bc194251a8033a0885810bf61c95Daniel Dunbar // 67299037e5a2118bc194251a8033a0885810bf61c95Daniel Dunbar // (a) If one of the classes is MEMORY, the whole argument is 67399037e5a2118bc194251a8033a0885810bf61c95Daniel Dunbar // passed in memory. 67499037e5a2118bc194251a8033a0885810bf61c95Daniel Dunbar // 67599037e5a2118bc194251a8033a0885810bf61c95Daniel Dunbar // (b) If SSEUP is not preceeded by SSE, it is converted to SSE. 67699037e5a2118bc194251a8033a0885810bf61c95Daniel Dunbar 67799037e5a2118bc194251a8033a0885810bf61c95Daniel Dunbar // The first of these conditions is guaranteed by how we implement 678c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar // the merge (just bail). 679c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar // 680c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar // The second condition occurs in the case of unions; for example 681c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar // union { _Complex double; unsigned; }. 682c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar if (Hi == Memory) 683c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar Lo = Memory; 68499037e5a2118bc194251a8033a0885810bf61c95Daniel Dunbar if (Hi == SSEUp && Lo != SSE) 685c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar Hi = SSE; 6866f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar } 6876f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar} 6886f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar 689644f4c3fe4130c7be75d6191340ba8d857ba0730Daniel DunbarABIArgInfo X86_64ABIInfo::getCoerceResult(QualType Ty, 690644f4c3fe4130c7be75d6191340ba8d857ba0730Daniel Dunbar const llvm::Type *CoerceTo, 691644f4c3fe4130c7be75d6191340ba8d857ba0730Daniel Dunbar ASTContext &Context) const { 692644f4c3fe4130c7be75d6191340ba8d857ba0730Daniel Dunbar if (CoerceTo == llvm::Type::Int64Ty) { 693644f4c3fe4130c7be75d6191340ba8d857ba0730Daniel Dunbar // Integer and pointer types will end up in a general purpose 694644f4c3fe4130c7be75d6191340ba8d857ba0730Daniel Dunbar // register. 6950af9929e1ba8e5b9ae0a8999439736d249599bbeDaniel Dunbar if (Ty->isIntegralType() || Ty->isPointerType()) 696644f4c3fe4130c7be75d6191340ba8d857ba0730Daniel Dunbar return ABIArgInfo::getDirect(); 6970af9929e1ba8e5b9ae0a8999439736d249599bbeDaniel Dunbar 698644f4c3fe4130c7be75d6191340ba8d857ba0730Daniel Dunbar } else if (CoerceTo == llvm::Type::DoubleTy) { 6993327f6ead9362e5689674a4aaab5b7f23ea0dea3Daniel Dunbar // FIXME: It would probably be better to make CGFunctionInfo only 7003327f6ead9362e5689674a4aaab5b7f23ea0dea3Daniel Dunbar // map using canonical types than to canonize here. 7013327f6ead9362e5689674a4aaab5b7f23ea0dea3Daniel Dunbar QualType CTy = Context.getCanonicalType(Ty); 7023327f6ead9362e5689674a4aaab5b7f23ea0dea3Daniel Dunbar 703644f4c3fe4130c7be75d6191340ba8d857ba0730Daniel Dunbar // Float and double end up in a single SSE reg. 7043327f6ead9362e5689674a4aaab5b7f23ea0dea3Daniel Dunbar if (CTy == Context.FloatTy || CTy == Context.DoubleTy) 705644f4c3fe4130c7be75d6191340ba8d857ba0730Daniel Dunbar return ABIArgInfo::getDirect(); 7060af9929e1ba8e5b9ae0a8999439736d249599bbeDaniel Dunbar 707644f4c3fe4130c7be75d6191340ba8d857ba0730Daniel Dunbar } 708644f4c3fe4130c7be75d6191340ba8d857ba0730Daniel Dunbar 709644f4c3fe4130c7be75d6191340ba8d857ba0730Daniel Dunbar return ABIArgInfo::getCoerce(CoerceTo); 710644f4c3fe4130c7be75d6191340ba8d857ba0730Daniel Dunbar} 711c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar 712d4edfe4746c66d2ac452c8a8d7cac17192283e75Daniel DunbarABIArgInfo X86_64ABIInfo::classifyReturnType(QualType RetTy, 713d4edfe4746c66d2ac452c8a8d7cac17192283e75Daniel Dunbar ASTContext &Context) const { 7146f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar // AMD64-ABI 3.2.3p4: Rule 1. Classify the return type with the 7156f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar // classification algorithm. 7166f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar X86_64ABIInfo::Class Lo, Hi; 717f04d69bbb25eb681fff1a108f13f67c6ca70cf6aDaniel Dunbar classify(RetTy, Context, 0, Lo, Hi); 7186f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar 719c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar // Check some invariants. 720c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar assert((Hi != Memory || Lo == Memory) && "Invalid memory classification."); 721c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar assert((Lo != NoClass || Hi == NoClass) && "Invalid null classification."); 722c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar assert((Hi != SSEUp || Lo == SSE) && "Invalid SSEUp classification."); 723c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar 7246f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar const llvm::Type *ResType = 0; 7256f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar switch (Lo) { 7266f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar case NoClass: 72711434925bf81c932c6c8fe3533bc0ba900d50dc2Daniel Dunbar return ABIArgInfo::getIgnore(); 7286f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar 7296f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar case SSEUp: 7306f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar case X87Up: 7316f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar assert(0 && "Invalid classification for lo word."); 7326f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar 733c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar // AMD64-ABI 3.2.3p4: Rule 2. Types of class memory are returned via 73411e383aa491a23ebd4a49688a09984c5e16a2e34Daniel Dunbar // hidden argument. 7356f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar case Memory: 73611e383aa491a23ebd4a49688a09984c5e16a2e34Daniel Dunbar return ABIArgInfo::getIndirect(0); 7376f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar 7386f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar // AMD64-ABI 3.2.3p4: Rule 3. If the class is INTEGER, the next 7396f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar // available register of the sequence %rax, %rdx is used. 7406f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar case Integer: 7416f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar ResType = llvm::Type::Int64Ty; break; 7426f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar 7436f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar // AMD64-ABI 3.2.3p4: Rule 4. If the class is SSE, the next 7446f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar // available SSE register of the sequence %xmm0, %xmm1 is used. 7456f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar case SSE: 7466f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar ResType = llvm::Type::DoubleTy; break; 7476f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar 7486f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar // AMD64-ABI 3.2.3p4: Rule 6. If the class is X87, the value is 7496f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar // returned on the X87 stack in %st0 as 80-bit x87 number. 7506f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar case X87: 7516f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar ResType = llvm::Type::X86_FP80Ty; break; 7526f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar 753c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar // AMD64-ABI 3.2.3p4: Rule 8. If the class is COMPLEX_X87, the real 754c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar // part of the value is returned in %st0 and the imaginary part in 755c450357c436c05aa02ef88d406de962d98ac50beDaniel Dunbar // %st1. 7566f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar case ComplexX87: 7576e53e9b8795022ed08d5e59b8d78b2c616c2ef9aDaniel Dunbar assert(Hi == ComplexX87 && "Unexpected ComplexX87 classification."); 7583e030b4c04546229c81449fde66f71b23b3fc550Daniel Dunbar ResType = llvm::StructType::get(llvm::Type::X86_FP80Ty, 7593e030b4c04546229c81449fde66f71b23b3fc550Daniel Dunbar llvm::Type::X86_FP80Ty, 7603e030b4c04546229c81449fde66f71b23b3fc550Daniel Dunbar NULL); 7616f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar break; 7626f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar } 7636f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar 7646f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar switch (Hi) { 7656e53e9b8795022ed08d5e59b8d78b2c616c2ef9aDaniel Dunbar // Memory was handled previously and X87 should 7666e53e9b8795022ed08d5e59b8d78b2c616c2ef9aDaniel Dunbar // never occur as a hi class. 7676f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar case Memory: 7686f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar case X87: 7696f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar assert(0 && "Invalid classification for hi word."); 7706f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar 7716e53e9b8795022ed08d5e59b8d78b2c616c2ef9aDaniel Dunbar case ComplexX87: // Previously handled. 7726f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar case NoClass: break; 7736e53e9b8795022ed08d5e59b8d78b2c616c2ef9aDaniel Dunbar 7746f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar case Integer: 775b0e14f2a878c1a823341d34ca8f8fe60419fb9efDaniel Dunbar ResType = llvm::StructType::get(ResType, llvm::Type::Int64Ty, NULL); 776b0e14f2a878c1a823341d34ca8f8fe60419fb9efDaniel Dunbar break; 7776f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar case SSE: 778b0e14f2a878c1a823341d34ca8f8fe60419fb9efDaniel Dunbar ResType = llvm::StructType::get(ResType, llvm::Type::DoubleTy, NULL); 779b0e14f2a878c1a823341d34ca8f8fe60419fb9efDaniel Dunbar break; 7806f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar 7816f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar // AMD64-ABI 3.2.3p4: Rule 5. If the class is SSEUP, the eightbyte 7826f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar // is passed in the upper half of the last used SSE register. 7836f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar // 7846f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar // SSEUP should always be preceeded by SSE, just widen. 7856f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar case SSEUp: 7866f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar assert(Lo == SSE && "Unexpected SSEUp classification."); 7876f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar ResType = llvm::VectorType::get(llvm::Type::DoubleTy, 2); 7886f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar break; 7896f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar 7906f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar // AMD64-ABI 3.2.3p4: Rule 7. If the class is X87UP, the value is 791b0e14f2a878c1a823341d34ca8f8fe60419fb9efDaniel Dunbar // returned together with the previous X87 value in %st0. 7926f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar // 7936f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar // X87UP should always be preceeded by X87, so we don't need to do 7946f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar // anything here. 7956f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar case X87Up: 7966f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar assert(Lo == X87 && "Unexpected X87Up classification."); 7976f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar break; 7986f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar } 7996f3e7fac422fb0c50e1579edf49a797797c821ccDaniel Dunbar 800644f4c3fe4130c7be75d6191340ba8d857ba0730Daniel Dunbar return getCoerceResult(RetTy, ResType, Context); 801d4edfe4746c66d2ac452c8a8d7cac17192283e75Daniel Dunbar} 802d4edfe4746c66d2ac452c8a8d7cac17192283e75Daniel Dunbar 80359e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel DunbarABIArgInfo X86_64ABIInfo::classifyArgumentType(QualType Ty, ASTContext &Context, 8043b4e9cd0655467f66332575b816a958d319e8ca6Daniel Dunbar unsigned &neededInt, 8053b4e9cd0655467f66332575b816a958d319e8ca6Daniel Dunbar unsigned &neededSSE) const { 80659e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar X86_64ABIInfo::Class Lo, Hi; 80759e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar classify(Ty, Context, 0, Lo, Hi); 80859e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar 80959e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar // Check some invariants. 81059e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar // FIXME: Enforce these by construction. 81159e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar assert((Hi != Memory || Lo == Memory) && "Invalid memory classification."); 81259e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar assert((Lo != NoClass || Hi == NoClass) && "Invalid null classification."); 81359e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar assert((Hi != SSEUp || Lo == SSE) && "Invalid SSEUp classification."); 81459e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar 8153b4e9cd0655467f66332575b816a958d319e8ca6Daniel Dunbar neededInt = 0; 8163b4e9cd0655467f66332575b816a958d319e8ca6Daniel Dunbar neededSSE = 0; 81759e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar const llvm::Type *ResType = 0; 81859e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar switch (Lo) { 81959e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar case NoClass: 82059e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar return ABIArgInfo::getIgnore(); 82159e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar 82259e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar // AMD64-ABI 3.2.3p3: Rule 1. If the class is MEMORY, pass the argument 82359e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar // on the stack. 82459e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar case Memory: 82559e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar 82659e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar // AMD64-ABI 3.2.3p3: Rule 5. If the class is X87, X87UP or 82759e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar // COMPLEX_X87, it is passed in memory. 82859e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar case X87: 82959e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar case ComplexX87: 83059e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar // Choose appropriate in memory type. 83159e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar if (CodeGenFunction::hasAggregateLLVMType(Ty)) 83211e383aa491a23ebd4a49688a09984c5e16a2e34Daniel Dunbar return ABIArgInfo::getIndirect(0); 83359e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar else 83459e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar return ABIArgInfo::getDirect(); 83559e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar 83659e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar case SSEUp: 83759e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar case X87Up: 83859e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar assert(0 && "Invalid classification for lo word."); 83959e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar 84059e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar // AMD64-ABI 3.2.3p3: Rule 2. If the class is INTEGER, the next 84159e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar // available register of the sequence %rdi, %rsi, %rdx, %rcx, %r8 84259e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar // and %r9 is used. 84359e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar case Integer: 84459e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar ++neededInt; 84559e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar ResType = llvm::Type::Int64Ty; 84659e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar break; 84759e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar 84859e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar // AMD64-ABI 3.2.3p3: Rule 3. If the class is SSE, the next 84959e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar // available SSE register is used, the registers are taken in the 85059e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar // order from %xmm0 to %xmm7. 85159e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar case SSE: 85259e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar ++neededSSE; 85359e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar ResType = llvm::Type::DoubleTy; 85459e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar break; 85559e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar } 85659e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar 85759e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar switch (Hi) { 85859e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar // Memory was handled previously, ComplexX87 and X87 should 85959e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar // never occur as hi classes, and X87Up must be preceed by X87, 86059e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar // which is passed in memory. 86159e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar case Memory: 86259e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar case X87: 86359e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar case X87Up: 86459e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar case ComplexX87: 86559e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar assert(0 && "Invalid classification for hi word."); 86659e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar 86759e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar case NoClass: break; 86859e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar case Integer: 86959e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar ResType = llvm::StructType::get(ResType, llvm::Type::Int64Ty, NULL); 87059e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar ++neededInt; 87159e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar break; 87259e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar case SSE: 87359e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar ResType = llvm::StructType::get(ResType, llvm::Type::DoubleTy, NULL); 87459e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar ++neededSSE; 87559e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar break; 87659e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar 87759e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar // AMD64-ABI 3.2.3p3: Rule 4. If the class is SSEUP, the 87859e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar // eightbyte is passed in the upper half of the last used SSE 87959e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar // register. 88059e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar case SSEUp: 88159e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar assert(Lo == SSE && "Unexpected SSEUp classification."); 88259e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar ResType = llvm::VectorType::get(llvm::Type::DoubleTy, 2); 88359e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar break; 88459e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar } 88559e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar 886644f4c3fe4130c7be75d6191340ba8d857ba0730Daniel Dunbar return getCoerceResult(Ty, ResType, Context); 887d4edfe4746c66d2ac452c8a8d7cac17192283e75Daniel Dunbar} 888d4edfe4746c66d2ac452c8a8d7cac17192283e75Daniel Dunbar 88959e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbarvoid X86_64ABIInfo::computeInfo(CGFunctionInfo &FI, ASTContext &Context) const { 89059e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar FI.getReturnInfo() = classifyReturnType(FI.getReturnType(), Context); 89159e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar 89259e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar // Keep track of the number of assigned registers. 89359e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar unsigned freeIntRegs = 6, freeSSERegs = 8; 89459e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar 89559e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar // AMD64-ABI 3.2.3p3: Once arguments are classified, the registers 89659e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar // get assigned (in left-to-right order) for passing as follows... 89759e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar for (CGFunctionInfo::arg_iterator it = FI.arg_begin(), ie = FI.arg_end(); 8983b4e9cd0655467f66332575b816a958d319e8ca6Daniel Dunbar it != ie; ++it) { 8993b4e9cd0655467f66332575b816a958d319e8ca6Daniel Dunbar unsigned neededInt, neededSSE; 9003b4e9cd0655467f66332575b816a958d319e8ca6Daniel Dunbar it->info = classifyArgumentType(it->type, Context, neededInt, neededSSE); 9013b4e9cd0655467f66332575b816a958d319e8ca6Daniel Dunbar 9023b4e9cd0655467f66332575b816a958d319e8ca6Daniel Dunbar // AMD64-ABI 3.2.3p3: If there are no registers available for any 9033b4e9cd0655467f66332575b816a958d319e8ca6Daniel Dunbar // eightbyte of an argument, the whole argument is passed on the 9043b4e9cd0655467f66332575b816a958d319e8ca6Daniel Dunbar // stack. If registers have already been assigned for some 9053b4e9cd0655467f66332575b816a958d319e8ca6Daniel Dunbar // eightbytes of such an argument, the assignments get reverted. 9063b4e9cd0655467f66332575b816a958d319e8ca6Daniel Dunbar if (freeIntRegs >= neededInt && freeSSERegs >= neededSSE) { 9073b4e9cd0655467f66332575b816a958d319e8ca6Daniel Dunbar freeIntRegs -= neededInt; 9083b4e9cd0655467f66332575b816a958d319e8ca6Daniel Dunbar freeSSERegs -= neededSSE; 9093b4e9cd0655467f66332575b816a958d319e8ca6Daniel Dunbar } else { 9103b4e9cd0655467f66332575b816a958d319e8ca6Daniel Dunbar // Choose appropriate in memory type. 9113b4e9cd0655467f66332575b816a958d319e8ca6Daniel Dunbar if (CodeGenFunction::hasAggregateLLVMType(it->type)) 9123b4e9cd0655467f66332575b816a958d319e8ca6Daniel Dunbar it->info = ABIArgInfo::getIndirect(0); 9133b4e9cd0655467f66332575b816a958d319e8ca6Daniel Dunbar else 9143b4e9cd0655467f66332575b816a958d319e8ca6Daniel Dunbar it->info = ABIArgInfo::getDirect(); 9153b4e9cd0655467f66332575b816a958d319e8ca6Daniel Dunbar } 9163b4e9cd0655467f66332575b816a958d319e8ca6Daniel Dunbar } 91759e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar} 91859e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar 919be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbarstatic llvm::Value *EmitVAArgFromMemory(llvm::Value *VAListAddr, 920be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar QualType Ty, 921be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar CodeGenFunction &CGF) { 922be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar llvm::Value *overflow_arg_area_p = 923be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar CGF.Builder.CreateStructGEP(VAListAddr, 2, "overflow_arg_area_p"); 924be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar llvm::Value *overflow_arg_area = 925be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar CGF.Builder.CreateLoad(overflow_arg_area_p, "overflow_arg_area"); 926be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar 927be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar // AMD64-ABI 3.5.7p5: Step 7. Align l->overflow_arg_area upwards to a 16 928be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar // byte boundary if alignment needed by type exceeds 8 byte boundary. 929c5bcee4dce79458c4f490490c71619e06cbde357Daniel Dunbar uint64_t Align = CGF.getContext().getTypeAlign(Ty) / 8; 930be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar if (Align > 8) { 931c5bcee4dce79458c4f490490c71619e06cbde357Daniel Dunbar // Note that we follow the ABI & gcc here, even though the type 932c5bcee4dce79458c4f490490c71619e06cbde357Daniel Dunbar // could in theory have an alignment greater than 16. This case 933c5bcee4dce79458c4f490490c71619e06cbde357Daniel Dunbar // shouldn't ever matter in practice. 934c5bcee4dce79458c4f490490c71619e06cbde357Daniel Dunbar 935c5bcee4dce79458c4f490490c71619e06cbde357Daniel Dunbar // overflow_arg_area = (overflow_arg_area + 15) & ~15; 936c5bcee4dce79458c4f490490c71619e06cbde357Daniel Dunbar llvm::Value *Offset = llvm::ConstantInt::get(llvm::Type::Int32Ty, 15); 937c5bcee4dce79458c4f490490c71619e06cbde357Daniel Dunbar overflow_arg_area = CGF.Builder.CreateGEP(overflow_arg_area, Offset); 938c5bcee4dce79458c4f490490c71619e06cbde357Daniel Dunbar llvm::Value *AsInt = CGF.Builder.CreatePtrToInt(overflow_arg_area, 939c5bcee4dce79458c4f490490c71619e06cbde357Daniel Dunbar llvm::Type::Int64Ty); 940c5bcee4dce79458c4f490490c71619e06cbde357Daniel Dunbar llvm::Value *Mask = llvm::ConstantInt::get(llvm::Type::Int64Ty, ~15LL); 941c5bcee4dce79458c4f490490c71619e06cbde357Daniel Dunbar overflow_arg_area = 942c5bcee4dce79458c4f490490c71619e06cbde357Daniel Dunbar CGF.Builder.CreateIntToPtr(CGF.Builder.CreateAnd(AsInt, Mask), 943c5bcee4dce79458c4f490490c71619e06cbde357Daniel Dunbar overflow_arg_area->getType(), 944c5bcee4dce79458c4f490490c71619e06cbde357Daniel Dunbar "overflow_arg_area.align"); 945be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar } 946be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar 947be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar // AMD64-ABI 3.5.7p5: Step 8. Fetch type from l->overflow_arg_area. 948be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar const llvm::Type *LTy = CGF.ConvertTypeForMem(Ty); 949be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar llvm::Value *Res = 950be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar CGF.Builder.CreateBitCast(overflow_arg_area, 951be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar llvm::PointerType::getUnqual(LTy)); 952be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar 953be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar // AMD64-ABI 3.5.7p5: Step 9. Set l->overflow_arg_area to: 954be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar // l->overflow_arg_area + sizeof(type). 955be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar // AMD64-ABI 3.5.7p5: Step 10. Align l->overflow_arg_area upwards to 956be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar // an 8 byte boundary. 957be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar 958be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar uint64_t SizeInBytes = (CGF.getContext().getTypeSize(Ty) + 7) / 8; 959be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar llvm::Value *Offset = llvm::ConstantInt::get(llvm::Type::Int32Ty, 960be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar (SizeInBytes + 7) & ~7); 961be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar overflow_arg_area = CGF.Builder.CreateGEP(overflow_arg_area, Offset, 962be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar "overflow_arg_area.next"); 963be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar CGF.Builder.CreateStore(overflow_arg_area, overflow_arg_area_p); 964be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar 965be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar // AMD64-ABI 3.5.7p5: Step 11. Return the fetched type. 966be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar return Res; 967be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar} 968be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar 969b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbarllvm::Value *X86_64ABIInfo::EmitVAArg(llvm::Value *VAListAddr, QualType Ty, 970b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbar CodeGenFunction &CGF) const { 971be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar // Assume that va_list type is correct; should be pointer to LLVM type: 972be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar // struct { 973be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar // i32 gp_offset; 974be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar // i32 fp_offset; 975be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar // i8* overflow_arg_area; 976be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar // i8* reg_save_area; 977be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar // }; 978be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar unsigned neededInt, neededSSE; 979be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar ABIArgInfo AI = classifyArgumentType(Ty, CGF.getContext(), 980be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar neededInt, neededSSE); 981be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar 982be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar // AMD64-ABI 3.5.7p5: Step 1. Determine whether type may be passed 983be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar // in the registers. If not go to step 7. 984be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar if (!neededInt && !neededSSE) 985be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar return EmitVAArgFromMemory(VAListAddr, Ty, CGF); 986be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar 987be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar // AMD64-ABI 3.5.7p5: Step 2. Compute num_gp to hold the number of 988be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar // general purpose registers needed to pass type and num_fp to hold 989be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar // the number of floating point registers needed. 990be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar 991be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar // AMD64-ABI 3.5.7p5: Step 3. Verify whether arguments fit into 992be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar // registers. In the case: l->gp_offset > 48 - num_gp * 8 or 993be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar // l->fp_offset > 304 - num_fp * 16 go to step 7. 994be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar // 995be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar // NOTE: 304 is a typo, there are (6 * 8 + 8 * 16) = 176 bytes of 996be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar // register save space). 997be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar 998be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar llvm::Value *InRegs = 0; 999be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar llvm::Value *gp_offset_p = 0, *gp_offset = 0; 1000be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar llvm::Value *fp_offset_p = 0, *fp_offset = 0; 1001be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar if (neededInt) { 1002be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar gp_offset_p = CGF.Builder.CreateStructGEP(VAListAddr, 0, "gp_offset_p"); 1003be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar gp_offset = CGF.Builder.CreateLoad(gp_offset_p, "gp_offset"); 1004be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar InRegs = 1005be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar CGF.Builder.CreateICmpULE(gp_offset, 1006be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar llvm::ConstantInt::get(llvm::Type::Int32Ty, 1007be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar 48 - neededInt * 8), 1008be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar "fits_in_gp"); 1009be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar } 1010be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar 1011be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar if (neededSSE) { 1012be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar fp_offset_p = CGF.Builder.CreateStructGEP(VAListAddr, 1, "fp_offset_p"); 1013be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar fp_offset = CGF.Builder.CreateLoad(fp_offset_p, "fp_offset"); 1014be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar llvm::Value *FitsInFP = 1015be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar CGF.Builder.CreateICmpULE(fp_offset, 1016be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar llvm::ConstantInt::get(llvm::Type::Int32Ty, 101790dafa1638edaffbba4b50f504d1470428a2d25dDaniel Dunbar 176 - neededSSE * 16), 1018be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar "fits_in_fp"); 1019f231346438e61e59ff7b72d5ecbd58b6ae484211Daniel Dunbar InRegs = InRegs ? CGF.Builder.CreateAnd(InRegs, FitsInFP) : FitsInFP; 1020be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar } 1021be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar 1022be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar llvm::BasicBlock *InRegBlock = CGF.createBasicBlock("vaarg.in_reg"); 1023be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar llvm::BasicBlock *InMemBlock = CGF.createBasicBlock("vaarg.in_mem"); 1024be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar llvm::BasicBlock *ContBlock = CGF.createBasicBlock("vaarg.end"); 1025be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar CGF.Builder.CreateCondBr(InRegs, InRegBlock, InMemBlock); 1026be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar 1027be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar // Emit code to load the value if it was passed in registers. 1028be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar 1029be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar CGF.EmitBlock(InRegBlock); 1030be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar 1031be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar // AMD64-ABI 3.5.7p5: Step 4. Fetch type from l->reg_save_area with 1032be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar // an offset of l->gp_offset and/or l->fp_offset. This may require 1033be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar // copying to a temporary location in case the parameter is passed 1034be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar // in different register classes or requires an alignment greater 1035be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar // than 8 for general purpose registers and 16 for XMM registers. 10363e030b4c04546229c81449fde66f71b23b3fc550Daniel Dunbar // 10373e030b4c04546229c81449fde66f71b23b3fc550Daniel Dunbar // FIXME: This really results in shameful code when we end up 10383e030b4c04546229c81449fde66f71b23b3fc550Daniel Dunbar // needing to collect arguments from different places; often what 10393e030b4c04546229c81449fde66f71b23b3fc550Daniel Dunbar // should result in a simple assembling of a structure from 10403e030b4c04546229c81449fde66f71b23b3fc550Daniel Dunbar // scattered addresses has many more loads than necessary. Can we 10413e030b4c04546229c81449fde66f71b23b3fc550Daniel Dunbar // clean this up? 1042be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar const llvm::Type *LTy = CGF.ConvertTypeForMem(Ty); 1043be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar llvm::Value *RegAddr = 1044be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar CGF.Builder.CreateLoad(CGF.Builder.CreateStructGEP(VAListAddr, 3), 1045be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar "reg_save_area"); 1046be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar if (neededInt && neededSSE) { 104755e5d8956be516d66db2196bd0ce3c30ebf5fbf0Daniel Dunbar // FIXME: Cleanup. 104855e5d8956be516d66db2196bd0ce3c30ebf5fbf0Daniel Dunbar assert(AI.isCoerce() && "Unexpected ABI info for mixed regs"); 104955e5d8956be516d66db2196bd0ce3c30ebf5fbf0Daniel Dunbar const llvm::StructType *ST = cast<llvm::StructType>(AI.getCoerceToType()); 105055e5d8956be516d66db2196bd0ce3c30ebf5fbf0Daniel Dunbar llvm::Value *Tmp = CGF.CreateTempAlloca(ST); 105155e5d8956be516d66db2196bd0ce3c30ebf5fbf0Daniel Dunbar assert(ST->getNumElements() == 2 && "Unexpected ABI info for mixed regs"); 105255e5d8956be516d66db2196bd0ce3c30ebf5fbf0Daniel Dunbar const llvm::Type *TyLo = ST->getElementType(0); 105355e5d8956be516d66db2196bd0ce3c30ebf5fbf0Daniel Dunbar const llvm::Type *TyHi = ST->getElementType(1); 105455e5d8956be516d66db2196bd0ce3c30ebf5fbf0Daniel Dunbar assert((TyLo->isFloatingPoint() ^ TyHi->isFloatingPoint()) && 105555e5d8956be516d66db2196bd0ce3c30ebf5fbf0Daniel Dunbar "Unexpected ABI info for mixed regs"); 105655e5d8956be516d66db2196bd0ce3c30ebf5fbf0Daniel Dunbar const llvm::Type *PTyLo = llvm::PointerType::getUnqual(TyLo); 105755e5d8956be516d66db2196bd0ce3c30ebf5fbf0Daniel Dunbar const llvm::Type *PTyHi = llvm::PointerType::getUnqual(TyHi); 105855e5d8956be516d66db2196bd0ce3c30ebf5fbf0Daniel Dunbar llvm::Value *GPAddr = CGF.Builder.CreateGEP(RegAddr, gp_offset); 105955e5d8956be516d66db2196bd0ce3c30ebf5fbf0Daniel Dunbar llvm::Value *FPAddr = CGF.Builder.CreateGEP(RegAddr, fp_offset); 106055e5d8956be516d66db2196bd0ce3c30ebf5fbf0Daniel Dunbar llvm::Value *RegLoAddr = TyLo->isFloatingPoint() ? FPAddr : GPAddr; 106155e5d8956be516d66db2196bd0ce3c30ebf5fbf0Daniel Dunbar llvm::Value *RegHiAddr = TyLo->isFloatingPoint() ? GPAddr : FPAddr; 106255e5d8956be516d66db2196bd0ce3c30ebf5fbf0Daniel Dunbar llvm::Value *V = 106355e5d8956be516d66db2196bd0ce3c30ebf5fbf0Daniel Dunbar CGF.Builder.CreateLoad(CGF.Builder.CreateBitCast(RegLoAddr, PTyLo)); 106455e5d8956be516d66db2196bd0ce3c30ebf5fbf0Daniel Dunbar CGF.Builder.CreateStore(V, CGF.Builder.CreateStructGEP(Tmp, 0)); 106555e5d8956be516d66db2196bd0ce3c30ebf5fbf0Daniel Dunbar V = CGF.Builder.CreateLoad(CGF.Builder.CreateBitCast(RegHiAddr, PTyHi)); 106655e5d8956be516d66db2196bd0ce3c30ebf5fbf0Daniel Dunbar CGF.Builder.CreateStore(V, CGF.Builder.CreateStructGEP(Tmp, 1)); 106755e5d8956be516d66db2196bd0ce3c30ebf5fbf0Daniel Dunbar 106855e5d8956be516d66db2196bd0ce3c30ebf5fbf0Daniel Dunbar RegAddr = CGF.Builder.CreateBitCast(Tmp, llvm::PointerType::getUnqual(LTy)); 1069be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar } else if (neededInt) { 1070be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar RegAddr = CGF.Builder.CreateGEP(RegAddr, gp_offset); 1071be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar RegAddr = CGF.Builder.CreateBitCast(RegAddr, 1072be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar llvm::PointerType::getUnqual(LTy)); 1073be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar } else { 10743e030b4c04546229c81449fde66f71b23b3fc550Daniel Dunbar if (neededSSE == 1) { 10753e030b4c04546229c81449fde66f71b23b3fc550Daniel Dunbar RegAddr = CGF.Builder.CreateGEP(RegAddr, fp_offset); 10763e030b4c04546229c81449fde66f71b23b3fc550Daniel Dunbar RegAddr = CGF.Builder.CreateBitCast(RegAddr, 10773e030b4c04546229c81449fde66f71b23b3fc550Daniel Dunbar llvm::PointerType::getUnqual(LTy)); 10783e030b4c04546229c81449fde66f71b23b3fc550Daniel Dunbar } else { 10793e030b4c04546229c81449fde66f71b23b3fc550Daniel Dunbar assert(neededSSE == 2 && "Invalid number of needed registers!"); 10803e030b4c04546229c81449fde66f71b23b3fc550Daniel Dunbar // SSE registers are spaced 16 bytes apart in the register save 10813e030b4c04546229c81449fde66f71b23b3fc550Daniel Dunbar // area, we need to collect the two eightbytes together. 10823e030b4c04546229c81449fde66f71b23b3fc550Daniel Dunbar llvm::Value *RegAddrLo = CGF.Builder.CreateGEP(RegAddr, fp_offset); 10833e030b4c04546229c81449fde66f71b23b3fc550Daniel Dunbar llvm::Value *RegAddrHi = 10843e030b4c04546229c81449fde66f71b23b3fc550Daniel Dunbar CGF.Builder.CreateGEP(RegAddrLo, 10853e030b4c04546229c81449fde66f71b23b3fc550Daniel Dunbar llvm::ConstantInt::get(llvm::Type::Int32Ty, 16)); 10863e030b4c04546229c81449fde66f71b23b3fc550Daniel Dunbar const llvm::Type *DblPtrTy = 10873e030b4c04546229c81449fde66f71b23b3fc550Daniel Dunbar llvm::PointerType::getUnqual(llvm::Type::DoubleTy); 10883e030b4c04546229c81449fde66f71b23b3fc550Daniel Dunbar const llvm::StructType *ST = llvm::StructType::get(llvm::Type::DoubleTy, 10893e030b4c04546229c81449fde66f71b23b3fc550Daniel Dunbar llvm::Type::DoubleTy, 10903e030b4c04546229c81449fde66f71b23b3fc550Daniel Dunbar NULL); 10913e030b4c04546229c81449fde66f71b23b3fc550Daniel Dunbar llvm::Value *V, *Tmp = CGF.CreateTempAlloca(ST); 10923e030b4c04546229c81449fde66f71b23b3fc550Daniel Dunbar V = CGF.Builder.CreateLoad(CGF.Builder.CreateBitCast(RegAddrLo, 10933e030b4c04546229c81449fde66f71b23b3fc550Daniel Dunbar DblPtrTy)); 10943e030b4c04546229c81449fde66f71b23b3fc550Daniel Dunbar CGF.Builder.CreateStore(V, CGF.Builder.CreateStructGEP(Tmp, 0)); 10953e030b4c04546229c81449fde66f71b23b3fc550Daniel Dunbar V = CGF.Builder.CreateLoad(CGF.Builder.CreateBitCast(RegAddrHi, 10963e030b4c04546229c81449fde66f71b23b3fc550Daniel Dunbar DblPtrTy)); 10973e030b4c04546229c81449fde66f71b23b3fc550Daniel Dunbar CGF.Builder.CreateStore(V, CGF.Builder.CreateStructGEP(Tmp, 1)); 10983e030b4c04546229c81449fde66f71b23b3fc550Daniel Dunbar RegAddr = CGF.Builder.CreateBitCast(Tmp, 10993e030b4c04546229c81449fde66f71b23b3fc550Daniel Dunbar llvm::PointerType::getUnqual(LTy)); 11003e030b4c04546229c81449fde66f71b23b3fc550Daniel Dunbar } 1101be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar } 1102be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar 1103be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar // AMD64-ABI 3.5.7p5: Step 5. Set: 1104be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar // l->gp_offset = l->gp_offset + num_gp * 8 1105be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar // l->fp_offset = l->fp_offset + num_fp * 16. 1106be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar if (neededInt) { 1107be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar llvm::Value *Offset = llvm::ConstantInt::get(llvm::Type::Int32Ty, 1108be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar neededInt * 8); 1109be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar CGF.Builder.CreateStore(CGF.Builder.CreateAdd(gp_offset, Offset), 1110be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar gp_offset_p); 1111be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar } 1112be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar if (neededSSE) { 1113be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar llvm::Value *Offset = llvm::ConstantInt::get(llvm::Type::Int32Ty, 1114be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar neededSSE * 16); 1115be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar CGF.Builder.CreateStore(CGF.Builder.CreateAdd(fp_offset, Offset), 1116be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar fp_offset_p); 1117be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar } 1118be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar CGF.EmitBranch(ContBlock); 1119be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar 1120be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar // Emit code to load the value if it was passed in memory. 1121be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar 1122be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar CGF.EmitBlock(InMemBlock); 1123be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar llvm::Value *MemAddr = EmitVAArgFromMemory(VAListAddr, Ty, CGF); 1124be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar 1125be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar // Return the appropriate result. 1126be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar 1127be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar CGF.EmitBlock(ContBlock); 1128be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar llvm::PHINode *ResAddr = CGF.Builder.CreatePHI(RegAddr->getType(), 1129be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar "vaarg.addr"); 1130be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar ResAddr->reserveOperandSpace(2); 1131be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar ResAddr->addIncoming(RegAddr, InRegBlock); 1132be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar ResAddr->addIncoming(MemAddr, InMemBlock); 1133be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar 1134be9eb0937c667e2823971966adf960f86d3985d6Daniel Dunbar return ResAddr; 1135b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbar} 1136b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbar 11376b1da0ea19c12346192f5ea4d70872c13bfcc82aDaniel DunbarABIArgInfo DefaultABIInfo::classifyReturnType(QualType RetTy, 1138b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbar ASTContext &Context) const { 11390bcc52114e37a8d152d9a05095ee7f7687c9aa94Daniel Dunbar if (RetTy->isVoidType()) { 11400bcc52114e37a8d152d9a05095ee7f7687c9aa94Daniel Dunbar return ABIArgInfo::getIgnore(); 11410bcc52114e37a8d152d9a05095ee7f7687c9aa94Daniel Dunbar } else if (CodeGenFunction::hasAggregateLLVMType(RetTy)) { 114211e383aa491a23ebd4a49688a09984c5e16a2e34Daniel Dunbar return ABIArgInfo::getIndirect(0); 11430bcc52114e37a8d152d9a05095ee7f7687c9aa94Daniel Dunbar } else { 11440bcc52114e37a8d152d9a05095ee7f7687c9aa94Daniel Dunbar return ABIArgInfo::getDirect(); 11450bcc52114e37a8d152d9a05095ee7f7687c9aa94Daniel Dunbar } 11466b1da0ea19c12346192f5ea4d70872c13bfcc82aDaniel Dunbar} 11476b1da0ea19c12346192f5ea4d70872c13bfcc82aDaniel Dunbar 11486b1da0ea19c12346192f5ea4d70872c13bfcc82aDaniel DunbarABIArgInfo DefaultABIInfo::classifyArgumentType(QualType Ty, 1149b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbar ASTContext &Context) const { 11500bcc52114e37a8d152d9a05095ee7f7687c9aa94Daniel Dunbar if (CodeGenFunction::hasAggregateLLVMType(Ty)) { 115111e383aa491a23ebd4a49688a09984c5e16a2e34Daniel Dunbar return ABIArgInfo::getIndirect(0); 11520bcc52114e37a8d152d9a05095ee7f7687c9aa94Daniel Dunbar } else { 11530bcc52114e37a8d152d9a05095ee7f7687c9aa94Daniel Dunbar return ABIArgInfo::getDirect(); 11540bcc52114e37a8d152d9a05095ee7f7687c9aa94Daniel Dunbar } 11556b1da0ea19c12346192f5ea4d70872c13bfcc82aDaniel Dunbar} 11566b1da0ea19c12346192f5ea4d70872c13bfcc82aDaniel Dunbar 1157b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbarllvm::Value *DefaultABIInfo::EmitVAArg(llvm::Value *VAListAddr, QualType Ty, 1158b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbar CodeGenFunction &CGF) const { 1159b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbar return 0; 1160b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbar} 1161b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbar 11626b1da0ea19c12346192f5ea4d70872c13bfcc82aDaniel Dunbarconst ABIInfo &CodeGenTypes::getABIInfo() const { 11636b1da0ea19c12346192f5ea4d70872c13bfcc82aDaniel Dunbar if (TheABIInfo) 11646b1da0ea19c12346192f5ea4d70872c13bfcc82aDaniel Dunbar return *TheABIInfo; 11656b1da0ea19c12346192f5ea4d70872c13bfcc82aDaniel Dunbar 11666b1da0ea19c12346192f5ea4d70872c13bfcc82aDaniel Dunbar // For now we just cache this in the CodeGenTypes and don't bother 11676b1da0ea19c12346192f5ea4d70872c13bfcc82aDaniel Dunbar // to free it. 11686b1da0ea19c12346192f5ea4d70872c13bfcc82aDaniel Dunbar const char *TargetPrefix = getContext().Target.getTargetPrefix(); 11696b1da0ea19c12346192f5ea4d70872c13bfcc82aDaniel Dunbar if (strcmp(TargetPrefix, "x86") == 0) { 1170d4edfe4746c66d2ac452c8a8d7cac17192283e75Daniel Dunbar switch (getContext().Target.getPointerWidth(0)) { 1171d4edfe4746c66d2ac452c8a8d7cac17192283e75Daniel Dunbar case 32: 11726b1da0ea19c12346192f5ea4d70872c13bfcc82aDaniel Dunbar return *(TheABIInfo = new X86_32ABIInfo()); 1173d4edfe4746c66d2ac452c8a8d7cac17192283e75Daniel Dunbar case 64: 117411a76ed8e34901f2b997896a8c0833c6c17bc586Daniel Dunbar return *(TheABIInfo = new X86_64ABIInfo()); 1175d4edfe4746c66d2ac452c8a8d7cac17192283e75Daniel Dunbar } 11766b1da0ea19c12346192f5ea4d70872c13bfcc82aDaniel Dunbar } 11776b1da0ea19c12346192f5ea4d70872c13bfcc82aDaniel Dunbar 11786b1da0ea19c12346192f5ea4d70872c13bfcc82aDaniel Dunbar return *(TheABIInfo = new DefaultABIInfo); 11796b1da0ea19c12346192f5ea4d70872c13bfcc82aDaniel Dunbar} 11806b1da0ea19c12346192f5ea4d70872c13bfcc82aDaniel Dunbar 11812c8e0f32b9c33686be23c70add0b97490903de9fDaniel Dunbar/***/ 11822c8e0f32b9c33686be23c70add0b97490903de9fDaniel Dunbar 118388c2fa96be989571b4afb6229f0ef5a3ef4450cbDaniel DunbarCGFunctionInfo::CGFunctionInfo(QualType ResTy, 118488c2fa96be989571b4afb6229f0ef5a3ef4450cbDaniel Dunbar const llvm::SmallVector<QualType, 16> &ArgTys) { 118588c2fa96be989571b4afb6229f0ef5a3ef4450cbDaniel Dunbar NumArgs = ArgTys.size(); 118688c2fa96be989571b4afb6229f0ef5a3ef4450cbDaniel Dunbar Args = new ArgInfo[1 + NumArgs]; 118788c2fa96be989571b4afb6229f0ef5a3ef4450cbDaniel Dunbar Args[0].type = ResTy; 118888c2fa96be989571b4afb6229f0ef5a3ef4450cbDaniel Dunbar for (unsigned i = 0; i < NumArgs; ++i) 118988c2fa96be989571b4afb6229f0ef5a3ef4450cbDaniel Dunbar Args[1 + i].type = ArgTys[i]; 119088c2fa96be989571b4afb6229f0ef5a3ef4450cbDaniel Dunbar} 119188c2fa96be989571b4afb6229f0ef5a3ef4450cbDaniel Dunbar 119288c2fa96be989571b4afb6229f0ef5a3ef4450cbDaniel Dunbar/***/ 119388c2fa96be989571b4afb6229f0ef5a3ef4450cbDaniel Dunbar 11945627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbarvoid CodeGenTypes::GetExpandedTypes(QualType Ty, 11955627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar std::vector<const llvm::Type*> &ArgTys) { 11965627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar const RecordType *RT = Ty->getAsStructureType(); 11975627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar assert(RT && "Can only expand structure types."); 11985627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar const RecordDecl *RD = RT->getDecl(); 11995627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar assert(!RD->hasFlexibleArrayMember() && 12005627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar "Cannot expand structure with flexible array."); 12015627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar 1202f8d49f64ef6ab7e632717a31631fc289aab69428Douglas Gregor for (RecordDecl::field_iterator i = RD->field_begin(), 12035627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar e = RD->field_end(); i != e; ++i) { 12045627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar const FieldDecl *FD = *i; 12055627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar assert(!FD->isBitField() && 12065627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar "Cannot expand structure with bit-field members."); 12075627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar 12085627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar QualType FT = FD->getType(); 12095627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar if (CodeGenFunction::hasAggregateLLVMType(FT)) { 12105627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar GetExpandedTypes(FT, ArgTys); 12115627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar } else { 12125627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar ArgTys.push_back(ConvertType(FT)); 12135627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar } 12145627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar } 12155627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar} 12165627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar 12175627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbarllvm::Function::arg_iterator 12185627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel DunbarCodeGenFunction::ExpandTypeFromArgs(QualType Ty, LValue LV, 12195627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar llvm::Function::arg_iterator AI) { 12205627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar const RecordType *RT = Ty->getAsStructureType(); 12215627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar assert(RT && "Can only expand structure types."); 12225627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar 12235627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar RecordDecl *RD = RT->getDecl(); 12245627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar assert(LV.isSimple() && 12255627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar "Unexpected non-simple lvalue during struct expansion."); 12265627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar llvm::Value *Addr = LV.getAddress(); 12275627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar for (RecordDecl::field_iterator i = RD->field_begin(), 12285627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar e = RD->field_end(); i != e; ++i) { 12295627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar FieldDecl *FD = *i; 12305627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar QualType FT = FD->getType(); 12315627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar 12325627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar // FIXME: What are the right qualifiers here? 12335627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar LValue LV = EmitLValueForField(Addr, FD, false, 0); 12345627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar if (CodeGenFunction::hasAggregateLLVMType(FT)) { 12355627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar AI = ExpandTypeFromArgs(FT, LV, AI); 12365627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar } else { 12375627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar EmitStoreThroughLValue(RValue::get(AI), LV, FT); 12385627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar ++AI; 12395627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar } 12405627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar } 12415627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar 12425627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar return AI; 12435627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar} 12445627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar 12455627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbarvoid 12465627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel DunbarCodeGenFunction::ExpandTypeToArgs(QualType Ty, RValue RV, 12475627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar llvm::SmallVector<llvm::Value*, 16> &Args) { 12485627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar const RecordType *RT = Ty->getAsStructureType(); 12495627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar assert(RT && "Can only expand structure types."); 12505627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar 12515627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar RecordDecl *RD = RT->getDecl(); 12525627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar assert(RV.isAggregate() && "Unexpected rvalue during struct expansion"); 12535627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar llvm::Value *Addr = RV.getAggregateAddr(); 12545627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar for (RecordDecl::field_iterator i = RD->field_begin(), 12555627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar e = RD->field_end(); i != e; ++i) { 12565627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar FieldDecl *FD = *i; 12575627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar QualType FT = FD->getType(); 12585627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar 12595627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar // FIXME: What are the right qualifiers here? 12605627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar LValue LV = EmitLValueForField(Addr, FD, false, 0); 12615627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar if (CodeGenFunction::hasAggregateLLVMType(FT)) { 12625627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar ExpandTypeToArgs(FT, RValue::getAggregate(LV.getAddress()), Args); 12635627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar } else { 12645627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar RValue RV = EmitLoadOfLValue(LV, FT); 12655627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar assert(RV.isScalar() && 12665627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar "Unexpected non-scalar rvalue during struct expansion."); 12675627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar Args.push_back(RV.getScalarVal()); 12685627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar } 12695627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar } 12705627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar} 12715627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar 1272275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar/// CreateCoercedLoad - Create a load from \arg SrcPtr interpreted as 1273275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar/// a pointer to an object of type \arg Ty. 1274275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar/// 1275275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar/// This safely handles the case when the src type is smaller than the 1276275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar/// destination type; in this situation the values of bits which not 1277275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar/// present in the src are undefined. 1278275e10d62af4a129a8559253958296d8659684c9Daniel Dunbarstatic llvm::Value *CreateCoercedLoad(llvm::Value *SrcPtr, 1279275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar const llvm::Type *Ty, 1280275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar CodeGenFunction &CGF) { 1281275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar const llvm::Type *SrcTy = 1282275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar cast<llvm::PointerType>(SrcPtr->getType())->getElementType(); 1283275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar uint64_t SrcSize = CGF.CGM.getTargetData().getTypePaddedSize(SrcTy); 1284275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar uint64_t DstSize = CGF.CGM.getTargetData().getTypePaddedSize(Ty); 1285275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar 1286b225be44aaab85a603e80dbe0eb3d81638b20d23Daniel Dunbar // If load is legal, just bitcast the src pointer. 1287275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar if (SrcSize == DstSize) { 1288275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar llvm::Value *Casted = 1289275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar CGF.Builder.CreateBitCast(SrcPtr, llvm::PointerType::getUnqual(Ty)); 1290386621f5e12f5db95af3b82250b08fdae3e3d321Daniel Dunbar llvm::LoadInst *Load = CGF.Builder.CreateLoad(Casted); 1291386621f5e12f5db95af3b82250b08fdae3e3d321Daniel Dunbar // FIXME: Use better alignment / avoid requiring aligned load. 1292386621f5e12f5db95af3b82250b08fdae3e3d321Daniel Dunbar Load->setAlignment(1); 1293386621f5e12f5db95af3b82250b08fdae3e3d321Daniel Dunbar return Load; 1294275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar } else { 1295275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar assert(SrcSize < DstSize && "Coercion is losing source bits!"); 1296275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar 1297275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar // Otherwise do coercion through memory. This is stupid, but 1298275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar // simple. 1299275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar llvm::Value *Tmp = CGF.CreateTempAlloca(Ty); 1300275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar llvm::Value *Casted = 1301275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar CGF.Builder.CreateBitCast(Tmp, llvm::PointerType::getUnqual(SrcTy)); 1302386621f5e12f5db95af3b82250b08fdae3e3d321Daniel Dunbar llvm::StoreInst *Store = 1303386621f5e12f5db95af3b82250b08fdae3e3d321Daniel Dunbar CGF.Builder.CreateStore(CGF.Builder.CreateLoad(SrcPtr), Casted); 1304386621f5e12f5db95af3b82250b08fdae3e3d321Daniel Dunbar // FIXME: Use better alignment / avoid requiring aligned store. 1305386621f5e12f5db95af3b82250b08fdae3e3d321Daniel Dunbar Store->setAlignment(1); 1306275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar return CGF.Builder.CreateLoad(Tmp); 1307275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar } 1308275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar} 1309275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar 1310275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar/// CreateCoercedStore - Create a store to \arg DstPtr from \arg Src, 1311275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar/// where the source and destination may have different types. 1312275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar/// 1313275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar/// This safely handles the case when the src type is larger than the 1314275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar/// destination type; the upper bits of the src will be lost. 1315275e10d62af4a129a8559253958296d8659684c9Daniel Dunbarstatic void CreateCoercedStore(llvm::Value *Src, 1316275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar llvm::Value *DstPtr, 1317275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar CodeGenFunction &CGF) { 1318275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar const llvm::Type *SrcTy = Src->getType(); 1319275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar const llvm::Type *DstTy = 1320275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar cast<llvm::PointerType>(DstPtr->getType())->getElementType(); 1321275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar 1322275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar uint64_t SrcSize = CGF.CGM.getTargetData().getTypePaddedSize(SrcTy); 1323275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar uint64_t DstSize = CGF.CGM.getTargetData().getTypePaddedSize(DstTy); 1324275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar 132588c2fa96be989571b4afb6229f0ef5a3ef4450cbDaniel Dunbar // If store is legal, just bitcast the src pointer. 1326275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar if (SrcSize == DstSize) { 1327275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar llvm::Value *Casted = 1328275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar CGF.Builder.CreateBitCast(DstPtr, llvm::PointerType::getUnqual(SrcTy)); 1329386621f5e12f5db95af3b82250b08fdae3e3d321Daniel Dunbar // FIXME: Use better alignment / avoid requiring aligned store. 1330386621f5e12f5db95af3b82250b08fdae3e3d321Daniel Dunbar CGF.Builder.CreateStore(Src, Casted)->setAlignment(1); 1331275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar } else { 1332275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar assert(SrcSize > DstSize && "Coercion is missing bits!"); 1333275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar 1334275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar // Otherwise do coercion through memory. This is stupid, but 1335275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar // simple. 1336275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar llvm::Value *Tmp = CGF.CreateTempAlloca(SrcTy); 1337275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar CGF.Builder.CreateStore(Src, Tmp); 1338275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar llvm::Value *Casted = 1339275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar CGF.Builder.CreateBitCast(Tmp, llvm::PointerType::getUnqual(DstTy)); 1340386621f5e12f5db95af3b82250b08fdae3e3d321Daniel Dunbar llvm::LoadInst *Load = CGF.Builder.CreateLoad(Casted); 1341386621f5e12f5db95af3b82250b08fdae3e3d321Daniel Dunbar // FIXME: Use better alignment / avoid requiring aligned load. 1342386621f5e12f5db95af3b82250b08fdae3e3d321Daniel Dunbar Load->setAlignment(1); 1343386621f5e12f5db95af3b82250b08fdae3e3d321Daniel Dunbar CGF.Builder.CreateStore(Load, DstPtr); 1344275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar } 1345275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar} 1346275e10d62af4a129a8559253958296d8659684c9Daniel Dunbar 13475627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar/***/ 13485627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar 134988b5396b0897f28d22ae3debf4a0d97b33b6c362Daniel Dunbarbool CodeGenModule::ReturnTypeUsesSret(const CGFunctionInfo &FI) { 135011e383aa491a23ebd4a49688a09984c5e16a2e34Daniel Dunbar return FI.getReturnInfo().isIndirect(); 1351bb36d331f439f49859efcfb4435c61762fbba6f9Daniel Dunbar} 1352bb36d331f439f49859efcfb4435c61762fbba6f9Daniel Dunbar 135345c25ba11cbf8c9a461def5b03f6ee9481e06769Daniel Dunbarconst llvm::FunctionType * 1354bb36d331f439f49859efcfb4435c61762fbba6f9Daniel DunbarCodeGenTypes::GetFunctionType(const CGFunctionInfo &FI, bool IsVariadic) { 135545c25ba11cbf8c9a461def5b03f6ee9481e06769Daniel Dunbar std::vector<const llvm::Type*> ArgTys; 135645c25ba11cbf8c9a461def5b03f6ee9481e06769Daniel Dunbar 135745c25ba11cbf8c9a461def5b03f6ee9481e06769Daniel Dunbar const llvm::Type *ResultType = 0; 135845c25ba11cbf8c9a461def5b03f6ee9481e06769Daniel Dunbar 1359a0a99e02f5b2de3817706071077298ef040634feDaniel Dunbar QualType RetTy = FI.getReturnType(); 1360b225be44aaab85a603e80dbe0eb3d81638b20d23Daniel Dunbar const ABIArgInfo &RetAI = FI.getReturnInfo(); 13618951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar switch (RetAI.getKind()) { 13628951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar case ABIArgInfo::Expand: 13638951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar assert(0 && "Invalid ABI kind for return argument"); 13648951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar 136546327aaf031529be2cf8bb21bc76d7a5ae0d43cdDaniel Dunbar case ABIArgInfo::Direct: 136646327aaf031529be2cf8bb21bc76d7a5ae0d43cdDaniel Dunbar ResultType = ConvertType(RetTy); 136746327aaf031529be2cf8bb21bc76d7a5ae0d43cdDaniel Dunbar break; 136846327aaf031529be2cf8bb21bc76d7a5ae0d43cdDaniel Dunbar 136911e383aa491a23ebd4a49688a09984c5e16a2e34Daniel Dunbar case ABIArgInfo::Indirect: { 137011e383aa491a23ebd4a49688a09984c5e16a2e34Daniel Dunbar assert(!RetAI.getIndirectAlign() && "Align unused on indirect return."); 137145c25ba11cbf8c9a461def5b03f6ee9481e06769Daniel Dunbar ResultType = llvm::Type::VoidTy; 137262d5c1b5038cdaa4a887a03c37fe1e8d00166ea0Daniel Dunbar const llvm::Type *STy = ConvertType(RetTy); 137345c25ba11cbf8c9a461def5b03f6ee9481e06769Daniel Dunbar ArgTys.push_back(llvm::PointerType::get(STy, RetTy.getAddressSpace())); 137445c25ba11cbf8c9a461def5b03f6ee9481e06769Daniel Dunbar break; 137545c25ba11cbf8c9a461def5b03f6ee9481e06769Daniel Dunbar } 137645c25ba11cbf8c9a461def5b03f6ee9481e06769Daniel Dunbar 137711434925bf81c932c6c8fe3533bc0ba900d50dc2Daniel Dunbar case ABIArgInfo::Ignore: 137811434925bf81c932c6c8fe3533bc0ba900d50dc2Daniel Dunbar ResultType = llvm::Type::VoidTy; 137911434925bf81c932c6c8fe3533bc0ba900d50dc2Daniel Dunbar break; 138011434925bf81c932c6c8fe3533bc0ba900d50dc2Daniel Dunbar 138145c25ba11cbf8c9a461def5b03f6ee9481e06769Daniel Dunbar case ABIArgInfo::Coerce: 1382639ffe47097d01249b98b7acd102aaad6697b43aDaniel Dunbar ResultType = RetAI.getCoerceToType(); 138345c25ba11cbf8c9a461def5b03f6ee9481e06769Daniel Dunbar break; 138445c25ba11cbf8c9a461def5b03f6ee9481e06769Daniel Dunbar } 138545c25ba11cbf8c9a461def5b03f6ee9481e06769Daniel Dunbar 138688c2fa96be989571b4afb6229f0ef5a3ef4450cbDaniel Dunbar for (CGFunctionInfo::const_arg_iterator it = FI.arg_begin(), 138788c2fa96be989571b4afb6229f0ef5a3ef4450cbDaniel Dunbar ie = FI.arg_end(); it != ie; ++it) { 138888c2fa96be989571b4afb6229f0ef5a3ef4450cbDaniel Dunbar const ABIArgInfo &AI = it->info; 13898951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar 13908951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar switch (AI.getKind()) { 139111434925bf81c932c6c8fe3533bc0ba900d50dc2Daniel Dunbar case ABIArgInfo::Ignore: 139211434925bf81c932c6c8fe3533bc0ba900d50dc2Daniel Dunbar break; 139311434925bf81c932c6c8fe3533bc0ba900d50dc2Daniel Dunbar 13945627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar case ABIArgInfo::Coerce: 139589c9d8e7f0700d27b1d93dc3832eb1af9b92c221Daniel Dunbar ArgTys.push_back(AI.getCoerceToType()); 139689c9d8e7f0700d27b1d93dc3832eb1af9b92c221Daniel Dunbar break; 139789c9d8e7f0700d27b1d93dc3832eb1af9b92c221Daniel Dunbar 1398adc8bdd6ab6f4f90d16f696f16948e46acf66267Daniel Dunbar case ABIArgInfo::Indirect: { 139911e383aa491a23ebd4a49688a09984c5e16a2e34Daniel Dunbar // indirect arguments are always on the stack, which is addr space #0. 1400adc8bdd6ab6f4f90d16f696f16948e46acf66267Daniel Dunbar const llvm::Type *LTy = ConvertTypeForMem(it->type); 1401adc8bdd6ab6f4f90d16f696f16948e46acf66267Daniel Dunbar ArgTys.push_back(llvm::PointerType::getUnqual(LTy)); 14028951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar break; 1403adc8bdd6ab6f4f90d16f696f16948e46acf66267Daniel Dunbar } 14048951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar 140546327aaf031529be2cf8bb21bc76d7a5ae0d43cdDaniel Dunbar case ABIArgInfo::Direct: 14061f7459814ed78067a8f0db3e1082b45ec89c16abDaniel Dunbar ArgTys.push_back(ConvertType(it->type)); 14078951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar break; 14088951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar 14098951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar case ABIArgInfo::Expand: 141088c2fa96be989571b4afb6229f0ef5a3ef4450cbDaniel Dunbar GetExpandedTypes(it->type, ArgTys); 14118951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar break; 14128951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar } 141345c25ba11cbf8c9a461def5b03f6ee9481e06769Daniel Dunbar } 141445c25ba11cbf8c9a461def5b03f6ee9481e06769Daniel Dunbar 1415bb36d331f439f49859efcfb4435c61762fbba6f9Daniel Dunbar return llvm::FunctionType::get(ResultType, ArgTys, IsVariadic); 14163913f184c84135fb4612743f1faa6c1edd2dd055Daniel Dunbar} 14173913f184c84135fb4612743f1faa6c1edd2dd055Daniel Dunbar 1418a0a99e02f5b2de3817706071077298ef040634feDaniel Dunbarvoid CodeGenModule::ConstructAttributeList(const CGFunctionInfo &FI, 141988b5396b0897f28d22ae3debf4a0d97b33b6c362Daniel Dunbar const Decl *TargetDecl, 1420761d7f78e2dac7ea5f35828c2271e60d91e106ceDevang Patel AttributeListType &PAL) { 14215323a4b0a1c248fa2ffdf886bb41a5d8fba71d2dDaniel Dunbar unsigned FuncAttrs = 0; 1422a2c6912c416c2d9f79d18f3a88ab0ae2609286c3Devang Patel unsigned RetAttrs = 0; 14235323a4b0a1c248fa2ffdf886bb41a5d8fba71d2dDaniel Dunbar 14245323a4b0a1c248fa2ffdf886bb41a5d8fba71d2dDaniel Dunbar if (TargetDecl) { 14255323a4b0a1c248fa2ffdf886bb41a5d8fba71d2dDaniel Dunbar if (TargetDecl->getAttr<NoThrowAttr>()) 1426761d7f78e2dac7ea5f35828c2271e60d91e106ceDevang Patel FuncAttrs |= llvm::Attribute::NoUnwind; 14275323a4b0a1c248fa2ffdf886bb41a5d8fba71d2dDaniel Dunbar if (TargetDecl->getAttr<NoReturnAttr>()) 1428761d7f78e2dac7ea5f35828c2271e60d91e106ceDevang Patel FuncAttrs |= llvm::Attribute::NoReturn; 1429232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson if (TargetDecl->getAttr<PureAttr>()) 1430232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson FuncAttrs |= llvm::Attribute::ReadOnly; 1431232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson if (TargetDecl->getAttr<ConstAttr>()) 1432232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson FuncAttrs |= llvm::Attribute::ReadNone; 14335323a4b0a1c248fa2ffdf886bb41a5d8fba71d2dDaniel Dunbar } 14345323a4b0a1c248fa2ffdf886bb41a5d8fba71d2dDaniel Dunbar 1435a0a99e02f5b2de3817706071077298ef040634feDaniel Dunbar QualType RetTy = FI.getReturnType(); 14365323a4b0a1c248fa2ffdf886bb41a5d8fba71d2dDaniel Dunbar unsigned Index = 1; 1437b225be44aaab85a603e80dbe0eb3d81638b20d23Daniel Dunbar const ABIArgInfo &RetAI = FI.getReturnInfo(); 143845c25ba11cbf8c9a461def5b03f6ee9481e06769Daniel Dunbar switch (RetAI.getKind()) { 143946327aaf031529be2cf8bb21bc76d7a5ae0d43cdDaniel Dunbar case ABIArgInfo::Direct: 14402c8e0f32b9c33686be23c70add0b97490903de9fDaniel Dunbar if (RetTy->isPromotableIntegerType()) { 14412c8e0f32b9c33686be23c70add0b97490903de9fDaniel Dunbar if (RetTy->isSignedIntegerType()) { 1442a2c6912c416c2d9f79d18f3a88ab0ae2609286c3Devang Patel RetAttrs |= llvm::Attribute::SExt; 14432c8e0f32b9c33686be23c70add0b97490903de9fDaniel Dunbar } else if (RetTy->isUnsignedIntegerType()) { 1444a2c6912c416c2d9f79d18f3a88ab0ae2609286c3Devang Patel RetAttrs |= llvm::Attribute::ZExt; 14452c8e0f32b9c33686be23c70add0b97490903de9fDaniel Dunbar } 14462c8e0f32b9c33686be23c70add0b97490903de9fDaniel Dunbar } 14472c8e0f32b9c33686be23c70add0b97490903de9fDaniel Dunbar break; 14482c8e0f32b9c33686be23c70add0b97490903de9fDaniel Dunbar 144911e383aa491a23ebd4a49688a09984c5e16a2e34Daniel Dunbar case ABIArgInfo::Indirect: 1450761d7f78e2dac7ea5f35828c2271e60d91e106ceDevang Patel PAL.push_back(llvm::AttributeWithIndex::get(Index, 1451725ad31086e3d6c41afa10c43db44f2e7060a961Daniel Dunbar llvm::Attribute::StructRet | 1452725ad31086e3d6c41afa10c43db44f2e7060a961Daniel Dunbar llvm::Attribute::NoAlias)); 14535323a4b0a1c248fa2ffdf886bb41a5d8fba71d2dDaniel Dunbar ++Index; 14542c8e0f32b9c33686be23c70add0b97490903de9fDaniel Dunbar break; 14552c8e0f32b9c33686be23c70add0b97490903de9fDaniel Dunbar 145611434925bf81c932c6c8fe3533bc0ba900d50dc2Daniel Dunbar case ABIArgInfo::Ignore: 14572c8e0f32b9c33686be23c70add0b97490903de9fDaniel Dunbar case ABIArgInfo::Coerce: 14582c8e0f32b9c33686be23c70add0b97490903de9fDaniel Dunbar break; 14598951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar 14608951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar case ABIArgInfo::Expand: 14618951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar assert(0 && "Invalid ABI kind for return argument"); 14625323a4b0a1c248fa2ffdf886bb41a5d8fba71d2dDaniel Dunbar } 14632c8e0f32b9c33686be23c70add0b97490903de9fDaniel Dunbar 1464a2c6912c416c2d9f79d18f3a88ab0ae2609286c3Devang Patel if (RetAttrs) 1465a2c6912c416c2d9f79d18f3a88ab0ae2609286c3Devang Patel PAL.push_back(llvm::AttributeWithIndex::get(0, RetAttrs)); 146688c2fa96be989571b4afb6229f0ef5a3ef4450cbDaniel Dunbar for (CGFunctionInfo::const_arg_iterator it = FI.arg_begin(), 146788c2fa96be989571b4afb6229f0ef5a3ef4450cbDaniel Dunbar ie = FI.arg_end(); it != ie; ++it) { 146888c2fa96be989571b4afb6229f0ef5a3ef4450cbDaniel Dunbar QualType ParamType = it->type; 146988c2fa96be989571b4afb6229f0ef5a3ef4450cbDaniel Dunbar const ABIArgInfo &AI = it->info; 1470761d7f78e2dac7ea5f35828c2271e60d91e106ceDevang Patel unsigned Attributes = 0; 14718951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar 14728951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar switch (AI.getKind()) { 147389c9d8e7f0700d27b1d93dc3832eb1af9b92c221Daniel Dunbar case ABIArgInfo::Coerce: 147489c9d8e7f0700d27b1d93dc3832eb1af9b92c221Daniel Dunbar break; 147589c9d8e7f0700d27b1d93dc3832eb1af9b92c221Daniel Dunbar 147611e383aa491a23ebd4a49688a09984c5e16a2e34Daniel Dunbar case ABIArgInfo::Indirect: 1477761d7f78e2dac7ea5f35828c2271e60d91e106ceDevang Patel Attributes |= llvm::Attribute::ByVal; 1478ca008822e8ad5dd8b3ff598cf62e909966847a67Daniel Dunbar Attributes |= 147911e383aa491a23ebd4a49688a09984c5e16a2e34Daniel Dunbar llvm::Attribute::constructAlignmentFromInt(AI.getIndirectAlign()); 14808951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar break; 14818951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar 148246327aaf031529be2cf8bb21bc76d7a5ae0d43cdDaniel Dunbar case ABIArgInfo::Direct: 14838951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar if (ParamType->isPromotableIntegerType()) { 14848951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar if (ParamType->isSignedIntegerType()) { 1485761d7f78e2dac7ea5f35828c2271e60d91e106ceDevang Patel Attributes |= llvm::Attribute::SExt; 14868951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar } else if (ParamType->isUnsignedIntegerType()) { 1487761d7f78e2dac7ea5f35828c2271e60d91e106ceDevang Patel Attributes |= llvm::Attribute::ZExt; 14888951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar } 14895323a4b0a1c248fa2ffdf886bb41a5d8fba71d2dDaniel Dunbar } 14908951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar break; 14918951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar 149211434925bf81c932c6c8fe3533bc0ba900d50dc2Daniel Dunbar case ABIArgInfo::Ignore: 149311434925bf81c932c6c8fe3533bc0ba900d50dc2Daniel Dunbar // Skip increment, no matching LLVM parameter. 149411434925bf81c932c6c8fe3533bc0ba900d50dc2Daniel Dunbar continue; 149511434925bf81c932c6c8fe3533bc0ba900d50dc2Daniel Dunbar 14965627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar case ABIArgInfo::Expand: { 14975627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar std::vector<const llvm::Type*> Tys; 14985627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar // FIXME: This is rather inefficient. Do we ever actually need 14995627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar // to do anything here? The result should be just reconstructed 15005627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar // on the other side, so extension should be a non-issue. 15015627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar getTypes().GetExpandedTypes(ParamType, Tys); 15025627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar Index += Tys.size(); 15035627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar continue; 15045627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar } 15055323a4b0a1c248fa2ffdf886bb41a5d8fba71d2dDaniel Dunbar } 15068951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar 1507761d7f78e2dac7ea5f35828c2271e60d91e106ceDevang Patel if (Attributes) 1508761d7f78e2dac7ea5f35828c2271e60d91e106ceDevang Patel PAL.push_back(llvm::AttributeWithIndex::get(Index, Attributes)); 15095627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar ++Index; 15105323a4b0a1c248fa2ffdf886bb41a5d8fba71d2dDaniel Dunbar } 1511a2c6912c416c2d9f79d18f3a88ab0ae2609286c3Devang Patel if (FuncAttrs) 1512a2c6912c416c2d9f79d18f3a88ab0ae2609286c3Devang Patel PAL.push_back(llvm::AttributeWithIndex::get(~0, FuncAttrs)); 1513a2c6912c416c2d9f79d18f3a88ab0ae2609286c3Devang Patel 15145323a4b0a1c248fa2ffdf886bb41a5d8fba71d2dDaniel Dunbar} 15155323a4b0a1c248fa2ffdf886bb41a5d8fba71d2dDaniel Dunbar 151688b5396b0897f28d22ae3debf4a0d97b33b6c362Daniel Dunbarvoid CodeGenFunction::EmitFunctionProlog(const CGFunctionInfo &FI, 151788b5396b0897f28d22ae3debf4a0d97b33b6c362Daniel Dunbar llvm::Function *Fn, 151817b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar const FunctionArgList &Args) { 15195251afa21d3583f2740fd4f83659d008625a7260Daniel Dunbar // FIXME: We no longer need the types from FunctionArgList; lift up 15205251afa21d3583f2740fd4f83659d008625a7260Daniel Dunbar // and simplify. 15215251afa21d3583f2740fd4f83659d008625a7260Daniel Dunbar 152217b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar // Emit allocs for param decls. Give the LLVM Argument nodes names. 152317b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar llvm::Function::arg_iterator AI = Fn->arg_begin(); 152417b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar 152517b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar // Name the struct return argument. 152688b5396b0897f28d22ae3debf4a0d97b33b6c362Daniel Dunbar if (CGM.ReturnTypeUsesSret(FI)) { 152717b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar AI->setName("agg.result"); 152817b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar ++AI; 152917b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar } 1530b225be44aaab85a603e80dbe0eb3d81638b20d23Daniel Dunbar 15314b5f0a4bd6645e87e5feae4be4675ce87d97b4a5Daniel Dunbar assert(FI.arg_size() == Args.size() && 15324b5f0a4bd6645e87e5feae4be4675ce87d97b4a5Daniel Dunbar "Mismatch between function signature & arguments."); 1533b225be44aaab85a603e80dbe0eb3d81638b20d23Daniel Dunbar CGFunctionInfo::const_arg_iterator info_it = FI.arg_begin(); 153417b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar for (FunctionArgList::const_iterator i = Args.begin(), e = Args.end(); 1535b225be44aaab85a603e80dbe0eb3d81638b20d23Daniel Dunbar i != e; ++i, ++info_it) { 153617b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar const VarDecl *Arg = i->first; 1537b225be44aaab85a603e80dbe0eb3d81638b20d23Daniel Dunbar QualType Ty = info_it->type; 1538b225be44aaab85a603e80dbe0eb3d81638b20d23Daniel Dunbar const ABIArgInfo &ArgI = info_it->info; 15398951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar 15408951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar switch (ArgI.getKind()) { 15411f7459814ed78067a8f0db3e1082b45ec89c16abDaniel Dunbar case ABIArgInfo::Indirect: { 15421f7459814ed78067a8f0db3e1082b45ec89c16abDaniel Dunbar llvm::Value* V = AI; 15431f7459814ed78067a8f0db3e1082b45ec89c16abDaniel Dunbar if (hasAggregateLLVMType(Ty)) { 15441f7459814ed78067a8f0db3e1082b45ec89c16abDaniel Dunbar // Do nothing, aggregates and complex variables are accessed by 15451f7459814ed78067a8f0db3e1082b45ec89c16abDaniel Dunbar // reference. 15461f7459814ed78067a8f0db3e1082b45ec89c16abDaniel Dunbar } else { 15471f7459814ed78067a8f0db3e1082b45ec89c16abDaniel Dunbar // Load scalar value from indirect argument. 1548adc8bdd6ab6f4f90d16f696f16948e46acf66267Daniel Dunbar V = EmitLoadOfScalar(V, false, Ty); 15491f7459814ed78067a8f0db3e1082b45ec89c16abDaniel Dunbar if (!getContext().typesAreCompatible(Ty, Arg->getType())) { 15501f7459814ed78067a8f0db3e1082b45ec89c16abDaniel Dunbar // This must be a promotion, for something like 15511f7459814ed78067a8f0db3e1082b45ec89c16abDaniel Dunbar // "void a(x) short x; {..." 15521f7459814ed78067a8f0db3e1082b45ec89c16abDaniel Dunbar V = EmitScalarConversion(V, Ty, Arg->getType()); 15531f7459814ed78067a8f0db3e1082b45ec89c16abDaniel Dunbar } 15541f7459814ed78067a8f0db3e1082b45ec89c16abDaniel Dunbar } 15551f7459814ed78067a8f0db3e1082b45ec89c16abDaniel Dunbar EmitParmDecl(*Arg, V); 15561f7459814ed78067a8f0db3e1082b45ec89c16abDaniel Dunbar break; 15571f7459814ed78067a8f0db3e1082b45ec89c16abDaniel Dunbar } 15581f7459814ed78067a8f0db3e1082b45ec89c16abDaniel Dunbar 155946327aaf031529be2cf8bb21bc76d7a5ae0d43cdDaniel Dunbar case ABIArgInfo::Direct: { 15608951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar assert(AI != Fn->arg_end() && "Argument mismatch!"); 15618951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar llvm::Value* V = AI; 15622fbf2f547cf23c0dd89719c2b5c5d6c6f0fa469cDaniel Dunbar if (hasAggregateLLVMType(Ty)) { 15632fbf2f547cf23c0dd89719c2b5c5d6c6f0fa469cDaniel Dunbar // Create a temporary alloca to hold the argument; the rest of 15642fbf2f547cf23c0dd89719c2b5c5d6c6f0fa469cDaniel Dunbar // codegen expects to access aggregates & complex values by 15652fbf2f547cf23c0dd89719c2b5c5d6c6f0fa469cDaniel Dunbar // reference. 1566adc8bdd6ab6f4f90d16f696f16948e46acf66267Daniel Dunbar V = CreateTempAlloca(ConvertTypeForMem(Ty)); 15672fbf2f547cf23c0dd89719c2b5c5d6c6f0fa469cDaniel Dunbar Builder.CreateStore(AI, V); 15682fbf2f547cf23c0dd89719c2b5c5d6c6f0fa469cDaniel Dunbar } else { 15692fbf2f547cf23c0dd89719c2b5c5d6c6f0fa469cDaniel Dunbar if (!getContext().typesAreCompatible(Ty, Arg->getType())) { 15702fbf2f547cf23c0dd89719c2b5c5d6c6f0fa469cDaniel Dunbar // This must be a promotion, for something like 15712fbf2f547cf23c0dd89719c2b5c5d6c6f0fa469cDaniel Dunbar // "void a(x) short x; {..." 15722fbf2f547cf23c0dd89719c2b5c5d6c6f0fa469cDaniel Dunbar V = EmitScalarConversion(V, Ty, Arg->getType()); 15732fbf2f547cf23c0dd89719c2b5c5d6c6f0fa469cDaniel Dunbar } 157417b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar } 15758951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar EmitParmDecl(*Arg, V); 15768951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar break; 15778951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar } 15788951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar 15795627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar case ABIArgInfo::Expand: { 1580b225be44aaab85a603e80dbe0eb3d81638b20d23Daniel Dunbar // If this structure was expanded into multiple arguments then 15815627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar // we need to create a temporary and reconstruct it from the 15825627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar // arguments. 158339f34e97d6a468f0a7dfa5664c61217cffc65b74Chris Lattner std::string Name = Arg->getNameAsString(); 1584adc8bdd6ab6f4f90d16f696f16948e46acf66267Daniel Dunbar llvm::Value *Temp = CreateTempAlloca(ConvertTypeForMem(Ty), 15855627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar (Name + ".addr").c_str()); 15865627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar // FIXME: What are the right qualifiers here? 15875627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar llvm::Function::arg_iterator End = 15885627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar ExpandTypeFromArgs(Ty, LValue::MakeAddr(Temp,0), AI); 15895627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar EmitParmDecl(*Arg, Temp); 15905627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar 15915627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar // Name the arguments used in expansion and increment AI. 15925627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar unsigned Index = 0; 15935627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar for (; AI != End; ++AI, ++Index) 15945627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar AI->setName(Name + "." + llvm::utostr(Index)); 15955627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar continue; 15965627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar } 159711434925bf81c932c6c8fe3533bc0ba900d50dc2Daniel Dunbar 159811434925bf81c932c6c8fe3533bc0ba900d50dc2Daniel Dunbar case ABIArgInfo::Ignore: 15998b979d9e4c41fb67eb276996bdaa608fb4b11ccdDaniel Dunbar // Initialize the local variable appropriately. 16008b979d9e4c41fb67eb276996bdaa608fb4b11ccdDaniel Dunbar if (hasAggregateLLVMType(Ty)) { 1601adc8bdd6ab6f4f90d16f696f16948e46acf66267Daniel Dunbar EmitParmDecl(*Arg, CreateTempAlloca(ConvertTypeForMem(Ty))); 16028b979d9e4c41fb67eb276996bdaa608fb4b11ccdDaniel Dunbar } else { 16038b979d9e4c41fb67eb276996bdaa608fb4b11ccdDaniel Dunbar EmitParmDecl(*Arg, llvm::UndefValue::get(ConvertType(Arg->getType()))); 16048b979d9e4c41fb67eb276996bdaa608fb4b11ccdDaniel Dunbar } 16058b979d9e4c41fb67eb276996bdaa608fb4b11ccdDaniel Dunbar 160659e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar // Skip increment, no matching LLVM parameter. 160759e5a0e4f1b3a6f4ddcb0e902e98d8b3c9d10799Daniel Dunbar continue; 160811434925bf81c932c6c8fe3533bc0ba900d50dc2Daniel Dunbar 160989c9d8e7f0700d27b1d93dc3832eb1af9b92c221Daniel Dunbar case ABIArgInfo::Coerce: { 161089c9d8e7f0700d27b1d93dc3832eb1af9b92c221Daniel Dunbar assert(AI != Fn->arg_end() && "Argument mismatch!"); 161189c9d8e7f0700d27b1d93dc3832eb1af9b92c221Daniel Dunbar // FIXME: This is very wasteful; EmitParmDecl is just going to 161289c9d8e7f0700d27b1d93dc3832eb1af9b92c221Daniel Dunbar // drop the result in a new alloca anyway, so we could just 161389c9d8e7f0700d27b1d93dc3832eb1af9b92c221Daniel Dunbar // store into that directly if we broke the abstraction down 161489c9d8e7f0700d27b1d93dc3832eb1af9b92c221Daniel Dunbar // more. 1615adc8bdd6ab6f4f90d16f696f16948e46acf66267Daniel Dunbar llvm::Value *V = CreateTempAlloca(ConvertTypeForMem(Ty), "coerce"); 161689c9d8e7f0700d27b1d93dc3832eb1af9b92c221Daniel Dunbar CreateCoercedStore(AI, V, *this); 161789c9d8e7f0700d27b1d93dc3832eb1af9b92c221Daniel Dunbar // Match to what EmitParmDecl is expecting for this type. 16188b29a387788bbb7a7c3b64c37473bc46299d2132Daniel Dunbar if (!CodeGenFunction::hasAggregateLLVMType(Ty)) { 1619adc8bdd6ab6f4f90d16f696f16948e46acf66267Daniel Dunbar V = EmitLoadOfScalar(V, false, Ty); 16208b29a387788bbb7a7c3b64c37473bc46299d2132Daniel Dunbar if (!getContext().typesAreCompatible(Ty, Arg->getType())) { 16218b29a387788bbb7a7c3b64c37473bc46299d2132Daniel Dunbar // This must be a promotion, for something like 16228b29a387788bbb7a7c3b64c37473bc46299d2132Daniel Dunbar // "void a(x) short x; {..." 16238b29a387788bbb7a7c3b64c37473bc46299d2132Daniel Dunbar V = EmitScalarConversion(V, Ty, Arg->getType()); 16248b29a387788bbb7a7c3b64c37473bc46299d2132Daniel Dunbar } 16258b29a387788bbb7a7c3b64c37473bc46299d2132Daniel Dunbar } 162689c9d8e7f0700d27b1d93dc3832eb1af9b92c221Daniel Dunbar EmitParmDecl(*Arg, V); 162789c9d8e7f0700d27b1d93dc3832eb1af9b92c221Daniel Dunbar break; 162889c9d8e7f0700d27b1d93dc3832eb1af9b92c221Daniel Dunbar } 16298951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar } 16305627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar 16315627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar ++AI; 163217b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar } 163317b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar assert(AI == Fn->arg_end() && "Argument mismatch!"); 163417b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar} 163517b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar 163688b5396b0897f28d22ae3debf4a0d97b33b6c362Daniel Dunbarvoid CodeGenFunction::EmitFunctionEpilog(const CGFunctionInfo &FI, 163717b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar llvm::Value *ReturnValue) { 16382c8e0f32b9c33686be23c70add0b97490903de9fDaniel Dunbar llvm::Value *RV = 0; 16392c8e0f32b9c33686be23c70add0b97490903de9fDaniel Dunbar 16402c8e0f32b9c33686be23c70add0b97490903de9fDaniel Dunbar // Functions with no result always return void. 16412c8e0f32b9c33686be23c70add0b97490903de9fDaniel Dunbar if (ReturnValue) { 164288b5396b0897f28d22ae3debf4a0d97b33b6c362Daniel Dunbar QualType RetTy = FI.getReturnType(); 1643b225be44aaab85a603e80dbe0eb3d81638b20d23Daniel Dunbar const ABIArgInfo &RetAI = FI.getReturnInfo(); 16442c8e0f32b9c33686be23c70add0b97490903de9fDaniel Dunbar 16452c8e0f32b9c33686be23c70add0b97490903de9fDaniel Dunbar switch (RetAI.getKind()) { 164611e383aa491a23ebd4a49688a09984c5e16a2e34Daniel Dunbar case ABIArgInfo::Indirect: 16473aea8cac3ec9ad03b1d2b002f38a0d42a70483c8Daniel Dunbar if (RetTy->isAnyComplexType()) { 16483aea8cac3ec9ad03b1d2b002f38a0d42a70483c8Daniel Dunbar ComplexPairTy RT = LoadComplexFromAddr(ReturnValue, false); 16493aea8cac3ec9ad03b1d2b002f38a0d42a70483c8Daniel Dunbar StoreComplexToAddr(RT, CurFn->arg_begin(), false); 16503aea8cac3ec9ad03b1d2b002f38a0d42a70483c8Daniel Dunbar } else if (CodeGenFunction::hasAggregateLLVMType(RetTy)) { 16513aea8cac3ec9ad03b1d2b002f38a0d42a70483c8Daniel Dunbar EmitAggregateCopy(CurFn->arg_begin(), ReturnValue, RetTy); 16523aea8cac3ec9ad03b1d2b002f38a0d42a70483c8Daniel Dunbar } else { 1653adc8bdd6ab6f4f90d16f696f16948e46acf66267Daniel Dunbar EmitStoreOfScalar(Builder.CreateLoad(ReturnValue), CurFn->arg_begin(), 1654adc8bdd6ab6f4f90d16f696f16948e46acf66267Daniel Dunbar false); 16553aea8cac3ec9ad03b1d2b002f38a0d42a70483c8Daniel Dunbar } 16562c8e0f32b9c33686be23c70add0b97490903de9fDaniel Dunbar break; 16578951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar 165846327aaf031529be2cf8bb21bc76d7a5ae0d43cdDaniel Dunbar case ABIArgInfo::Direct: 16592fbf2f547cf23c0dd89719c2b5c5d6c6f0fa469cDaniel Dunbar // The internal return value temp always will have 16602fbf2f547cf23c0dd89719c2b5c5d6c6f0fa469cDaniel Dunbar // pointer-to-return-type type. 16612c8e0f32b9c33686be23c70add0b97490903de9fDaniel Dunbar RV = Builder.CreateLoad(ReturnValue); 16622c8e0f32b9c33686be23c70add0b97490903de9fDaniel Dunbar break; 16632c8e0f32b9c33686be23c70add0b97490903de9fDaniel Dunbar 166411434925bf81c932c6c8fe3533bc0ba900d50dc2Daniel Dunbar case ABIArgInfo::Ignore: 166511434925bf81c932c6c8fe3533bc0ba900d50dc2Daniel Dunbar break; 166611434925bf81c932c6c8fe3533bc0ba900d50dc2Daniel Dunbar 1667adc8bdd6ab6f4f90d16f696f16948e46acf66267Daniel Dunbar case ABIArgInfo::Coerce: 166854d1ccbfcf19ddf39444f1b4018dd79487cc847bDaniel Dunbar RV = CreateCoercedLoad(ReturnValue, RetAI.getCoerceToType(), *this); 16698951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar break; 16708951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar 16718951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar case ABIArgInfo::Expand: 16728951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar assert(0 && "Invalid ABI kind for return argument"); 167317b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar } 167417b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar } 16752c8e0f32b9c33686be23c70add0b97490903de9fDaniel Dunbar 16762c8e0f32b9c33686be23c70add0b97490903de9fDaniel Dunbar if (RV) { 16772c8e0f32b9c33686be23c70add0b97490903de9fDaniel Dunbar Builder.CreateRet(RV); 16782c8e0f32b9c33686be23c70add0b97490903de9fDaniel Dunbar } else { 16792c8e0f32b9c33686be23c70add0b97490903de9fDaniel Dunbar Builder.CreateRetVoid(); 16802c8e0f32b9c33686be23c70add0b97490903de9fDaniel Dunbar } 168117b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar} 168217b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar 168388b5396b0897f28d22ae3debf4a0d97b33b6c362Daniel DunbarRValue CodeGenFunction::EmitCall(const CGFunctionInfo &CallInfo, 168488b5396b0897f28d22ae3debf4a0d97b33b6c362Daniel Dunbar llvm::Value *Callee, 1685c0ef9f59937c3971c48b6fed37cf5bd8985c024bDaniel Dunbar const CallArgList &CallArgs, 1686c0ef9f59937c3971c48b6fed37cf5bd8985c024bDaniel Dunbar const Decl *TargetDecl) { 16875251afa21d3583f2740fd4f83659d008625a7260Daniel Dunbar // FIXME: We no longer need the types from CallArgs; lift up and 16885251afa21d3583f2740fd4f83659d008625a7260Daniel Dunbar // simplify. 168917b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar llvm::SmallVector<llvm::Value*, 16> Args; 169017b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar 169117b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar // Handle struct-return functions by passing a pointer to the 169217b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar // location that we would like to return into. 1693bb36d331f439f49859efcfb4435c61762fbba6f9Daniel Dunbar QualType RetTy = CallInfo.getReturnType(); 1694b225be44aaab85a603e80dbe0eb3d81638b20d23Daniel Dunbar const ABIArgInfo &RetAI = CallInfo.getReturnInfo(); 16952969a0243b0939286a45d0ba58dd3e1de226ac60Daniel Dunbar if (CGM.ReturnTypeUsesSret(CallInfo)) { 169617b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar // Create a temporary alloca to hold the result of the call. :( 1697adc8bdd6ab6f4f90d16f696f16948e46acf66267Daniel Dunbar Args.push_back(CreateTempAlloca(ConvertTypeForMem(RetTy))); 169817b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar } 169917b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar 17004b5f0a4bd6645e87e5feae4be4675ce87d97b4a5Daniel Dunbar assert(CallInfo.arg_size() == CallArgs.size() && 17014b5f0a4bd6645e87e5feae4be4675ce87d97b4a5Daniel Dunbar "Mismatch between function signature & arguments."); 1702b225be44aaab85a603e80dbe0eb3d81638b20d23Daniel Dunbar CGFunctionInfo::const_arg_iterator info_it = CallInfo.arg_begin(); 170317b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar for (CallArgList::const_iterator I = CallArgs.begin(), E = CallArgs.end(); 1704b225be44aaab85a603e80dbe0eb3d81638b20d23Daniel Dunbar I != E; ++I, ++info_it) { 1705b225be44aaab85a603e80dbe0eb3d81638b20d23Daniel Dunbar const ABIArgInfo &ArgInfo = info_it->info; 170617b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar RValue RV = I->first; 17075627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar 17085627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar switch (ArgInfo.getKind()) { 170911e383aa491a23ebd4a49688a09984c5e16a2e34Daniel Dunbar case ABIArgInfo::Indirect: 17101f7459814ed78067a8f0db3e1082b45ec89c16abDaniel Dunbar if (RV.isScalar() || RV.isComplex()) { 17111f7459814ed78067a8f0db3e1082b45ec89c16abDaniel Dunbar // Make a temporary alloca to pass the argument. 1712adc8bdd6ab6f4f90d16f696f16948e46acf66267Daniel Dunbar Args.push_back(CreateTempAlloca(ConvertTypeForMem(I->second))); 17131f7459814ed78067a8f0db3e1082b45ec89c16abDaniel Dunbar if (RV.isScalar()) 1714adc8bdd6ab6f4f90d16f696f16948e46acf66267Daniel Dunbar EmitStoreOfScalar(RV.getScalarVal(), Args.back(), false); 17151f7459814ed78067a8f0db3e1082b45ec89c16abDaniel Dunbar else 17161f7459814ed78067a8f0db3e1082b45ec89c16abDaniel Dunbar StoreComplexToAddr(RV.getComplexVal(), Args.back(), false); 17171f7459814ed78067a8f0db3e1082b45ec89c16abDaniel Dunbar } else { 17181f7459814ed78067a8f0db3e1082b45ec89c16abDaniel Dunbar Args.push_back(RV.getAggregateAddr()); 17191f7459814ed78067a8f0db3e1082b45ec89c16abDaniel Dunbar } 17201f7459814ed78067a8f0db3e1082b45ec89c16abDaniel Dunbar break; 17211f7459814ed78067a8f0db3e1082b45ec89c16abDaniel Dunbar 172246327aaf031529be2cf8bb21bc76d7a5ae0d43cdDaniel Dunbar case ABIArgInfo::Direct: 17235627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar if (RV.isScalar()) { 17245627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar Args.push_back(RV.getScalarVal()); 17255627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar } else if (RV.isComplex()) { 17262fbf2f547cf23c0dd89719c2b5c5d6c6f0fa469cDaniel Dunbar llvm::Value *Tmp = llvm::UndefValue::get(ConvertType(I->second)); 17272fbf2f547cf23c0dd89719c2b5c5d6c6f0fa469cDaniel Dunbar Tmp = Builder.CreateInsertValue(Tmp, RV.getComplexVal().first, 0); 17282fbf2f547cf23c0dd89719c2b5c5d6c6f0fa469cDaniel Dunbar Tmp = Builder.CreateInsertValue(Tmp, RV.getComplexVal().second, 1); 17292fbf2f547cf23c0dd89719c2b5c5d6c6f0fa469cDaniel Dunbar Args.push_back(Tmp); 17305627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar } else { 17312fbf2f547cf23c0dd89719c2b5c5d6c6f0fa469cDaniel Dunbar Args.push_back(Builder.CreateLoad(RV.getAggregateAddr())); 17325627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar } 17335627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar break; 17345627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar 173511434925bf81c932c6c8fe3533bc0ba900d50dc2Daniel Dunbar case ABIArgInfo::Ignore: 173611434925bf81c932c6c8fe3533bc0ba900d50dc2Daniel Dunbar break; 173711434925bf81c932c6c8fe3533bc0ba900d50dc2Daniel Dunbar 173889c9d8e7f0700d27b1d93dc3832eb1af9b92c221Daniel Dunbar case ABIArgInfo::Coerce: { 173989c9d8e7f0700d27b1d93dc3832eb1af9b92c221Daniel Dunbar // FIXME: Avoid the conversion through memory if possible. 174089c9d8e7f0700d27b1d93dc3832eb1af9b92c221Daniel Dunbar llvm::Value *SrcPtr; 174189c9d8e7f0700d27b1d93dc3832eb1af9b92c221Daniel Dunbar if (RV.isScalar()) { 17425a1be6e16ba306c349a3c3f80e9dce800976bc24Daniel Dunbar SrcPtr = CreateTempAlloca(ConvertTypeForMem(I->second), "coerce"); 1743adc8bdd6ab6f4f90d16f696f16948e46acf66267Daniel Dunbar EmitStoreOfScalar(RV.getScalarVal(), SrcPtr, false); 174489c9d8e7f0700d27b1d93dc3832eb1af9b92c221Daniel Dunbar } else if (RV.isComplex()) { 1745adc8bdd6ab6f4f90d16f696f16948e46acf66267Daniel Dunbar SrcPtr = CreateTempAlloca(ConvertTypeForMem(I->second), "coerce"); 174689c9d8e7f0700d27b1d93dc3832eb1af9b92c221Daniel Dunbar StoreComplexToAddr(RV.getComplexVal(), SrcPtr, false); 174789c9d8e7f0700d27b1d93dc3832eb1af9b92c221Daniel Dunbar } else 174889c9d8e7f0700d27b1d93dc3832eb1af9b92c221Daniel Dunbar SrcPtr = RV.getAggregateAddr(); 174989c9d8e7f0700d27b1d93dc3832eb1af9b92c221Daniel Dunbar Args.push_back(CreateCoercedLoad(SrcPtr, ArgInfo.getCoerceToType(), 175089c9d8e7f0700d27b1d93dc3832eb1af9b92c221Daniel Dunbar *this)); 175189c9d8e7f0700d27b1d93dc3832eb1af9b92c221Daniel Dunbar break; 175289c9d8e7f0700d27b1d93dc3832eb1af9b92c221Daniel Dunbar } 175389c9d8e7f0700d27b1d93dc3832eb1af9b92c221Daniel Dunbar 17545627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar case ABIArgInfo::Expand: 17555627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar ExpandTypeToArgs(I->second, RV, Args); 17565627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar break; 175717b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar } 175817b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar } 175917b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar 176017b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar llvm::CallInst *CI = Builder.CreateCall(Callee,&Args[0],&Args[0]+Args.size()); 176117b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar 1762761d7f78e2dac7ea5f35828c2271e60d91e106ceDevang Patel CodeGen::AttributeListType AttributeList; 1763c0ef9f59937c3971c48b6fed37cf5bd8985c024bDaniel Dunbar CGM.ConstructAttributeList(CallInfo, TargetDecl, AttributeList); 1764761d7f78e2dac7ea5f35828c2271e60d91e106ceDevang Patel CI->setAttributes(llvm::AttrListPtr::get(AttributeList.begin(), 1765725ad31086e3d6c41afa10c43db44f2e7060a961Daniel Dunbar AttributeList.size())); 1766725ad31086e3d6c41afa10c43db44f2e7060a961Daniel Dunbar 176717b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar if (const llvm::Function *F = dyn_cast<llvm::Function>(Callee)) 176817b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar CI->setCallingConv(F->getCallingConv()); 1769f4fe0f082f21048c0777ad5aeac04a5a94db1f46Daniel Dunbar 1770f4fe0f082f21048c0777ad5aeac04a5a94db1f46Daniel Dunbar // If the call doesn't return, finish the basic block and clear the 1771f4fe0f082f21048c0777ad5aeac04a5a94db1f46Daniel Dunbar // insertion point; this allows the rest of IRgen to discard 1772f4fe0f082f21048c0777ad5aeac04a5a94db1f46Daniel Dunbar // unreachable code. 1773f4fe0f082f21048c0777ad5aeac04a5a94db1f46Daniel Dunbar if (CI->doesNotReturn()) { 1774f4fe0f082f21048c0777ad5aeac04a5a94db1f46Daniel Dunbar Builder.CreateUnreachable(); 1775f4fe0f082f21048c0777ad5aeac04a5a94db1f46Daniel Dunbar Builder.ClearInsertionPoint(); 1776f4fe0f082f21048c0777ad5aeac04a5a94db1f46Daniel Dunbar 1777f4fe0f082f21048c0777ad5aeac04a5a94db1f46Daniel Dunbar // Return a reasonable RValue. 1778f4fe0f082f21048c0777ad5aeac04a5a94db1f46Daniel Dunbar return GetUndefRValue(RetTy); 1779f4fe0f082f21048c0777ad5aeac04a5a94db1f46Daniel Dunbar } 1780f4fe0f082f21048c0777ad5aeac04a5a94db1f46Daniel Dunbar 178117b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar if (CI->getType() != llvm::Type::VoidTy) 178217b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar CI->setName("call"); 17832c8e0f32b9c33686be23c70add0b97490903de9fDaniel Dunbar 17842c8e0f32b9c33686be23c70add0b97490903de9fDaniel Dunbar switch (RetAI.getKind()) { 178511e383aa491a23ebd4a49688a09984c5e16a2e34Daniel Dunbar case ABIArgInfo::Indirect: 17862c8e0f32b9c33686be23c70add0b97490903de9fDaniel Dunbar if (RetTy->isAnyComplexType()) 17875627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar return RValue::getComplex(LoadComplexFromAddr(Args[0], false)); 17883aea8cac3ec9ad03b1d2b002f38a0d42a70483c8Daniel Dunbar else if (CodeGenFunction::hasAggregateLLVMType(RetTy)) 17895627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar return RValue::getAggregate(Args[0]); 17903aea8cac3ec9ad03b1d2b002f38a0d42a70483c8Daniel Dunbar else 1791adc8bdd6ab6f4f90d16f696f16948e46acf66267Daniel Dunbar return RValue::get(EmitLoadOfScalar(Args[0], false, RetTy)); 17928951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar 179346327aaf031529be2cf8bb21bc76d7a5ae0d43cdDaniel Dunbar case ABIArgInfo::Direct: 17942fbf2f547cf23c0dd89719c2b5c5d6c6f0fa469cDaniel Dunbar if (RetTy->isAnyComplexType()) { 17952fbf2f547cf23c0dd89719c2b5c5d6c6f0fa469cDaniel Dunbar llvm::Value *Real = Builder.CreateExtractValue(CI, 0); 17962fbf2f547cf23c0dd89719c2b5c5d6c6f0fa469cDaniel Dunbar llvm::Value *Imag = Builder.CreateExtractValue(CI, 1); 17972fbf2f547cf23c0dd89719c2b5c5d6c6f0fa469cDaniel Dunbar return RValue::getComplex(std::make_pair(Real, Imag)); 17982fbf2f547cf23c0dd89719c2b5c5d6c6f0fa469cDaniel Dunbar } else if (CodeGenFunction::hasAggregateLLVMType(RetTy)) { 1799adc8bdd6ab6f4f90d16f696f16948e46acf66267Daniel Dunbar llvm::Value *V = CreateTempAlloca(ConvertTypeForMem(RetTy), "agg.tmp"); 18002fbf2f547cf23c0dd89719c2b5c5d6c6f0fa469cDaniel Dunbar Builder.CreateStore(CI, V); 18012fbf2f547cf23c0dd89719c2b5c5d6c6f0fa469cDaniel Dunbar return RValue::getAggregate(V); 18022fbf2f547cf23c0dd89719c2b5c5d6c6f0fa469cDaniel Dunbar } else 18032fbf2f547cf23c0dd89719c2b5c5d6c6f0fa469cDaniel Dunbar return RValue::get(CI); 18042c8e0f32b9c33686be23c70add0b97490903de9fDaniel Dunbar 180511434925bf81c932c6c8fe3533bc0ba900d50dc2Daniel Dunbar case ABIArgInfo::Ignore: 18060bcc52114e37a8d152d9a05095ee7f7687c9aa94Daniel Dunbar // If we are ignoring an argument that had a result, make sure to 18070bcc52114e37a8d152d9a05095ee7f7687c9aa94Daniel Dunbar // construct the appropriate return value for our caller. 180813e81737a433b23f8c662d10d1d57356122a8caaDaniel Dunbar return GetUndefRValue(RetTy); 180911434925bf81c932c6c8fe3533bc0ba900d50dc2Daniel Dunbar 1810639ffe47097d01249b98b7acd102aaad6697b43aDaniel Dunbar case ABIArgInfo::Coerce: { 181189c9d8e7f0700d27b1d93dc3832eb1af9b92c221Daniel Dunbar // FIXME: Avoid the conversion through memory if possible. 1812adc8bdd6ab6f4f90d16f696f16948e46acf66267Daniel Dunbar llvm::Value *V = CreateTempAlloca(ConvertTypeForMem(RetTy), "coerce"); 181354d1ccbfcf19ddf39444f1b4018dd79487cc847bDaniel Dunbar CreateCoercedStore(CI, V, *this); 1814ad3d6917dabbdab3399ff8307240aad58247d2e3Anders Carlsson if (RetTy->isAnyComplexType()) 1815ad3d6917dabbdab3399ff8307240aad58247d2e3Anders Carlsson return RValue::getComplex(LoadComplexFromAddr(V, false)); 181611434925bf81c932c6c8fe3533bc0ba900d50dc2Daniel Dunbar else if (CodeGenFunction::hasAggregateLLVMType(RetTy)) 1817ad3d6917dabbdab3399ff8307240aad58247d2e3Anders Carlsson return RValue::getAggregate(V); 181811434925bf81c932c6c8fe3533bc0ba900d50dc2Daniel Dunbar else 1819adc8bdd6ab6f4f90d16f696f16948e46acf66267Daniel Dunbar return RValue::get(EmitLoadOfScalar(V, false, RetTy)); 1820639ffe47097d01249b98b7acd102aaad6697b43aDaniel Dunbar } 18218951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar 18228951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar case ABIArgInfo::Expand: 18238951dbd225580173193ec9db503d9d9844ff97d6Daniel Dunbar assert(0 && "Invalid ABI kind for return argument"); 182417b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar } 18252c8e0f32b9c33686be23c70add0b97490903de9fDaniel Dunbar 18262c8e0f32b9c33686be23c70add0b97490903de9fDaniel Dunbar assert(0 && "Unhandled ABIArgInfo::Kind"); 18272c8e0f32b9c33686be23c70add0b97490903de9fDaniel Dunbar return RValue::get(0); 182817b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar} 1829b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbar 1830b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbar/* VarArg handling */ 1831b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbar 1832b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbarllvm::Value *CodeGenFunction::EmitVAArg(llvm::Value *VAListAddr, QualType Ty) { 1833b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbar return CGM.getTypes().getABIInfo().EmitVAArg(VAListAddr, Ty, *this); 1834b4094ea09eee7d3a847cadf181a81efc99003dafDaniel Dunbar} 1835