CGExprScalar.cpp revision daa24a29f881fb2ae53c4022e593eda1adf4b95b
17f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner//===--- CGExprScalar.cpp - Emit LLVM Code for Scalar Exprs ---------------===// 27f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner// 37f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner// The LLVM Compiler Infrastructure 47f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner// 50bc735ffcfb223c0186419547abaa5c84482663eChris Lattner// This file is distributed under the University of Illinois Open Source 60bc735ffcfb223c0186419547abaa5c84482663eChris Lattner// License. See LICENSE.TXT for details. 77f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner// 87f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner//===----------------------------------------------------------------------===// 97f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner// 107f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner// This contains code to emit Expr nodes with scalar LLVM types as LLVM code. 117f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner// 127f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner//===----------------------------------------------------------------------===// 137f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 147f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner#include "CodeGenFunction.h" 157f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner#include "CodeGenModule.h" 16de7fb8413b13651fd85b7125d08b3c9ac2816d9dDaniel Dunbar#include "clang/AST/ASTContext.h" 1798c5ead87d720d8b68b6f236c3c3579a388fc882Daniel Dunbar#include "clang/AST/DeclObjC.h" 18769e411b72465a63454cdd416ff26ff313d43505Eli Friedman#include "clang/AST/RecordLayout.h" 19de7fb8413b13651fd85b7125d08b3c9ac2816d9dDaniel Dunbar#include "clang/AST/StmtVisitor.h" 2025ddea7f7835c4b1804e458a5c866cde0097430aChris Lattner#include "clang/Basic/TargetInfo.h" 217f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner#include "llvm/Constants.h" 227f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner#include "llvm/Function.h" 2385f9bceab1542aafff012d4d28e998f4ba16e362Anders Carlsson#include "llvm/GlobalVariable.h" 247c50aca2fe36f6daa9bf1c8c428f30e72f96470aAnders Carlsson#include "llvm/Intrinsics.h" 257f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner#include "llvm/Support/Compiler.h" 26f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner#include "llvm/Support/CFG.h" 274e7a1f7682d94811bd41fca8aefccc38f686db23Mike Stump#include "llvm/Target/TargetData.h" 28c89bf69c9289d2b2305f2c267daacc7312391898Chris Lattner#include <cstdarg> 296aad91a43e26118c824d976661077819265d9bc0Ted Kremenek 307f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattnerusing namespace clang; 317f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattnerusing namespace CodeGen; 327f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattnerusing llvm::Value; 337f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 347f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner//===----------------------------------------------------------------------===// 357f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner// Scalar Expression Emitter 367f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner//===----------------------------------------------------------------------===// 377f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 387f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattnerstruct BinOpInfo { 397f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *LHS; 407f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *RHS; 411f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner QualType Ty; // Computation Type. 427f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner const BinaryOperator *E; 437f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner}; 447f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 457f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattnernamespace { 467f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattnerclass VISIBILITY_HIDDEN ScalarExprEmitter 477f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner : public StmtVisitor<ScalarExprEmitter, Value*> { 487f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner CodeGenFunction &CGF; 4945d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar CGBuilderTy &Builder; 502b94fe35edf951a14ecd32b21f7ebcc2e3754c67Chris Lattner 517f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattnerpublic: 527f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 532b94fe35edf951a14ecd32b21f7ebcc2e3754c67Chris Lattner ScalarExprEmitter(CodeGenFunction &cgf) : CGF(cgf), 54ed7c618f849e2541b1d0288c43154937652c5b15Daniel Dunbar Builder(CGF.Builder) { 557f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 567f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 577f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner //===--------------------------------------------------------------------===// 587f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Utilities 597f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner //===--------------------------------------------------------------------===// 607f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 617f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner const llvm::Type *ConvertType(QualType T) { return CGF.ConvertType(T); } 627f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner LValue EmitLValue(const Expr *E) { return CGF.EmitLValue(E); } 637f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 647f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *EmitLoadOfLValue(LValue LV, QualType T) { 659b65551d0b387a7597fb39356a4d8ef10046445eChris Lattner return CGF.EmitLoadOfLValue(LV, T).getScalarVal(); 667f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 677f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 687f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner /// EmitLoadOfLValue - Given an expression with complex type that represents a 697f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner /// value l-value, this method emits the address of the l-value, then loads 707f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner /// and returns the result. 717f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *EmitLoadOfLValue(const Expr *E) { 727f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return EmitLoadOfLValue(EmitLValue(E), E->getType()); 737f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 747f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 759abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner /// EmitConversionToBool - Convert the specified expression value to a 763420d0de2c52fedf771d7ef20522f6080233e377Chris Lattner /// boolean (i1) truth value. This is equivalent to "Val != 0". 779abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner Value *EmitConversionToBool(Value *Src, QualType DstTy); 789abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner 793707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner /// EmitScalarConversion - Emit a conversion from the specified type to the 803707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner /// specified destination type, both of which are LLVM scalar types. 814f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner Value *EmitScalarConversion(Value *Src, QualType SrcTy, QualType DstTy); 824f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner 834f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner /// EmitComplexToScalarConversion - Emit a conversion from the specified 844f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner /// complex type to the specified destination type, where the destination 854f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner /// type is an LLVM scalar type. 864f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner Value *EmitComplexToScalarConversion(CodeGenFunction::ComplexPairTy Src, 874f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner QualType SrcTy, QualType DstTy); 88df6b68c9487aed2042c7fc23db10a79f89083a11Mike Stump 897f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner //===--------------------------------------------------------------------===// 907f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Visitor Methods 917f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner //===--------------------------------------------------------------------===// 927f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 937f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitStmt(Stmt *S) { 947a9d49fd2bfac00e905b361ba76d26ab5b6c3b09Ted Kremenek S->dump(CGF.getContext().getSourceManager()); 957f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner assert(0 && "Stmt can't have complex result type!"); 967f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return 0; 977f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 987f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitExpr(Expr *S); 997f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitParenExpr(ParenExpr *PE) { return Visit(PE->getSubExpr()); } 1007f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 1017f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Leaves. 1027f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitIntegerLiteral(const IntegerLiteral *E) { 1037f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return llvm::ConstantInt::get(E->getValue()); 1047f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 1057f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitFloatingLiteral(const FloatingLiteral *E) { 10659138ba7ce960888433546639deb45e2e03f8857Chris Lattner return llvm::ConstantFP::get(E->getValue()); 1077f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 1087f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitCharacterLiteral(const CharacterLiteral *E) { 1097f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return llvm::ConstantInt::get(ConvertType(E->getType()), E->getValue()); 110e7579b57eb3eabfd3545b86320fb67466730e9fcNate Begeman } 111e7579b57eb3eabfd3545b86320fb67466730e9fcNate Begeman Value *VisitCXXBoolLiteralExpr(const CXXBoolLiteralExpr *E) { 112e7579b57eb3eabfd3545b86320fb67466730e9fcNate Begeman return llvm::ConstantInt::get(ConvertType(E->getType()), E->getValue()); 1137f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 1147267f7832e5f0c7f951765e201c5a2650eb1637bArgyrios Kyrtzidis Value *VisitCXXZeroInitValueExpr(const CXXZeroInitValueExpr *E) { 1157267f7832e5f0c7f951765e201c5a2650eb1637bArgyrios Kyrtzidis return llvm::Constant::getNullValue(ConvertType(E->getType())); 1167267f7832e5f0c7f951765e201c5a2650eb1637bArgyrios Kyrtzidis } 1173f70456b8adb0405ef2a47d51f9fc2d5937ae8aeAnders Carlsson Value *VisitGNUNullExpr(const GNUNullExpr *E) { 1183f70456b8adb0405ef2a47d51f9fc2d5937ae8aeAnders Carlsson return llvm::Constant::getNullValue(ConvertType(E->getType())); 1193f70456b8adb0405ef2a47d51f9fc2d5937ae8aeAnders Carlsson } 1207f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitTypesCompatibleExpr(const TypesCompatibleExpr *E) { 1217f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return llvm::ConstantInt::get(ConvertType(E->getType()), 122ec0550fa3653d46560bf4484a2e988329c228e39Steve Naroff CGF.getContext().typesAreCompatible( 123ec0550fa3653d46560bf4484a2e988329c228e39Steve Naroff E->getArgType1(), E->getArgType2())); 1247f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 1250518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl Value *VisitSizeOfAlignOfExpr(const SizeOfAlignOfExpr *E); 1260ffb125996336fc7602b162c0a9e392f1a93060fDaniel Dunbar Value *VisitAddrLabelExpr(const AddrLabelExpr *E) { 12754d19091a809d30a5e6e352fda53377d69ebda66Daniel Dunbar llvm::Value *V = 12854d19091a809d30a5e6e352fda53377d69ebda66Daniel Dunbar llvm::ConstantInt::get(llvm::Type::Int32Ty, 12954d19091a809d30a5e6e352fda53377d69ebda66Daniel Dunbar CGF.GetIDForAddrOfLabel(E->getLabel())); 13054d19091a809d30a5e6e352fda53377d69ebda66Daniel Dunbar 13154d19091a809d30a5e6e352fda53377d69ebda66Daniel Dunbar return Builder.CreateIntToPtr(V, ConvertType(E->getType())); 1320ffb125996336fc7602b162c0a9e392f1a93060fDaniel Dunbar } 1337f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 1347f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // l-values. 1357f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitDeclRefExpr(DeclRefExpr *E) { 1367f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner if (const EnumConstantDecl *EC = dyn_cast<EnumConstantDecl>(E->getDecl())) 1377f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return llvm::ConstantInt::get(EC->getInitVal()); 1387f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return EmitLoadOfLValue(E); 1397f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 1409c3fc703b29a31d40bcf5027dbb4784dd393804eDaniel Dunbar Value *VisitObjCSelectorExpr(ObjCSelectorExpr *E) { 1419c3fc703b29a31d40bcf5027dbb4784dd393804eDaniel Dunbar return CGF.EmitObjCSelectorExpr(E); 1429c3fc703b29a31d40bcf5027dbb4784dd393804eDaniel Dunbar } 1439c3fc703b29a31d40bcf5027dbb4784dd393804eDaniel Dunbar Value *VisitObjCProtocolExpr(ObjCProtocolExpr *E) { 1449c3fc703b29a31d40bcf5027dbb4784dd393804eDaniel Dunbar return CGF.EmitObjCProtocolExpr(E); 1459c3fc703b29a31d40bcf5027dbb4784dd393804eDaniel Dunbar } 1469c3fc703b29a31d40bcf5027dbb4784dd393804eDaniel Dunbar Value *VisitObjCIvarRefExpr(ObjCIvarRefExpr *E) { 1479c3fc703b29a31d40bcf5027dbb4784dd393804eDaniel Dunbar return EmitLoadOfLValue(E); 1489c3fc703b29a31d40bcf5027dbb4784dd393804eDaniel Dunbar } 1490a04d77bde7e3a661c2b41b60630d125d09ed6efDaniel Dunbar Value *VisitObjCPropertyRefExpr(ObjCPropertyRefExpr *E) { 15085c59edda02df48fae8dc85049743319bc6e7e89Daniel Dunbar return EmitLoadOfLValue(E); 1519c3fc703b29a31d40bcf5027dbb4784dd393804eDaniel Dunbar } 15243f447098d5e6162fbfb97ed38365284207a7fbeFariborz Jahanian Value *VisitObjCKVCRefExpr(ObjCKVCRefExpr *E) { 15343f447098d5e6162fbfb97ed38365284207a7fbeFariborz Jahanian return EmitLoadOfLValue(E); 15443f447098d5e6162fbfb97ed38365284207a7fbeFariborz Jahanian } 1559c3fc703b29a31d40bcf5027dbb4784dd393804eDaniel Dunbar Value *VisitObjCMessageExpr(ObjCMessageExpr *E) { 1569c3fc703b29a31d40bcf5027dbb4784dd393804eDaniel Dunbar return CGF.EmitObjCMessageExpr(E).getScalarVal(); 1570a04d77bde7e3a661c2b41b60630d125d09ed6efDaniel Dunbar } 1580a04d77bde7e3a661c2b41b60630d125d09ed6efDaniel Dunbar 1597f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitArraySubscriptExpr(ArraySubscriptExpr *E); 160d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman Value *VisitShuffleVectorExpr(ShuffleVectorExpr *E); 1617f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitMemberExpr(Expr *E) { return EmitLoadOfLValue(E); } 162213541a68a3e137d11d2cefb612c6cdb410d7e8eNate Begeman Value *VisitExtVectorElementExpr(Expr *E) { return EmitLoadOfLValue(E); } 163be20bb558cae5352898e6a913e29d24d20134841Chris Lattner Value *VisitCompoundLiteralExpr(CompoundLiteralExpr *E) { 164be20bb558cae5352898e6a913e29d24d20134841Chris Lattner return EmitLoadOfLValue(E); 165be20bb558cae5352898e6a913e29d24d20134841Chris Lattner } 1667f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitStringLiteral(Expr *E) { return EmitLValue(E).getAddress(); } 167eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner Value *VisitObjCEncodeExpr(const ObjCEncodeExpr *E) { 168eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner return EmitLValue(E).getAddress(); 169eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner } 170eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner 171d9f6910f4ef37c0e8eeee2a01287d9572c3176efChris Lattner Value *VisitPredefinedExpr(Expr *E) { return EmitLValue(E).getAddress(); } 17235634f5ed67966c9f1fde38420e79cc6515cd673Devang Patel 17335634f5ed67966c9f1fde38420e79cc6515cd673Devang Patel Value *VisitInitListExpr(InitListExpr *E) { 1747019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson unsigned NumInitElements = E->getNumInits(); 1757019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson 176a9c878086036de36482cc21e35a33cabe9699b0aDouglas Gregor if (E->hadArrayRangeDesignator()) { 177a9c878086036de36482cc21e35a33cabe9699b0aDouglas Gregor CGF.ErrorUnsupported(E, "GNU array range designator extension"); 178a9c878086036de36482cc21e35a33cabe9699b0aDouglas Gregor } 179a9c878086036de36482cc21e35a33cabe9699b0aDouglas Gregor 1807019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson const llvm::VectorType *VType = 181f6884ac7cfc4c5562c0678ad65b3460a38f56e23Anders Carlsson dyn_cast<llvm::VectorType>(ConvertType(E->getType())); 182f6884ac7cfc4c5562c0678ad65b3460a38f56e23Anders Carlsson 183f6884ac7cfc4c5562c0678ad65b3460a38f56e23Anders Carlsson // We have a scalar in braces. Just use the first element. 184f6884ac7cfc4c5562c0678ad65b3460a38f56e23Anders Carlsson if (!VType) 185f6884ac7cfc4c5562c0678ad65b3460a38f56e23Anders Carlsson return Visit(E->getInit(0)); 1867019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson 1877019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson unsigned NumVectorElements = VType->getNumElements(); 1887019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson const llvm::Type *ElementType = VType->getElementType(); 1897019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson 1907019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson // Emit individual vector element stores. 1917019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson llvm::Value *V = llvm::UndefValue::get(VType); 1927019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson 193222d2c8b7886e37ba22f0b25ac7a6552f7cc8492Anders Carlsson // Emit initializers 194222d2c8b7886e37ba22f0b25ac7a6552f7cc8492Anders Carlsson unsigned i; 195222d2c8b7886e37ba22f0b25ac7a6552f7cc8492Anders Carlsson for (i = 0; i < NumInitElements; ++i) { 196a83cc33195c7d1fa31d6809416eaa4c3ebf036ebDevang Patel Value *NewV = Visit(E->getInit(i)); 197a83cc33195c7d1fa31d6809416eaa4c3ebf036ebDevang Patel Value *Idx = llvm::ConstantInt::get(llvm::Type::Int32Ty, i); 198a83cc33195c7d1fa31d6809416eaa4c3ebf036ebDevang Patel V = Builder.CreateInsertElement(V, NewV, Idx); 19935634f5ed67966c9f1fde38420e79cc6515cd673Devang Patel } 2007019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson 2017019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson // Emit remaining default initializers 2027019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson for (/* Do not initialize i*/; i < NumVectorElements; ++i) { 2037019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson Value *Idx = llvm::ConstantInt::get(llvm::Type::Int32Ty, i); 2047019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson llvm::Value *NewV = llvm::Constant::getNullValue(ElementType); 2057019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson V = Builder.CreateInsertElement(V, NewV, Idx); 2067019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson } 2077019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson 208a83cc33195c7d1fa31d6809416eaa4c3ebf036ebDevang Patel return V; 20935634f5ed67966c9f1fde38420e79cc6515cd673Devang Patel } 21004421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner 2113498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor Value *VisitImplicitValueInitExpr(const ImplicitValueInitExpr *E) { 2123498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor return llvm::Constant::getNullValue(ConvertType(E->getType())); 2133498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor } 2147f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitImplicitCastExpr(const ImplicitCastExpr *E); 2157f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitCastExpr(const CastExpr *E) { 2167f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return EmitCastExpr(E->getSubExpr(), E->getType()); 2177f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 2187f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *EmitCastExpr(const Expr *E, QualType T); 2197f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 2207f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitCallExpr(const CallExpr *E) { 2219b65551d0b387a7597fb39356a4d8ef10046445eChris Lattner return CGF.EmitCallExpr(E).getScalarVal(); 2227f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 2238f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar 2243379320c10001d7e1ee5d7e7142c417f797cfe82Chris Lattner Value *VisitStmtExpr(const StmtExpr *E); 2254e7a1f7682d94811bd41fca8aefccc38f686db23Mike Stump 226a99038c0757a836c6faeeddaa5dfd249b32f6e9eMike Stump Value *VisitBlockDeclRefExpr(const BlockDeclRefExpr *E); 2273379320c10001d7e1ee5d7e7142c417f797cfe82Chris Lattner 2287f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Unary Operators. 2297f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitPrePostIncDec(const UnaryOperator *E, bool isInc, bool isPre); 2307f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitUnaryPostDec(const UnaryOperator *E) { 2317f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return VisitPrePostIncDec(E, false, false); 2327f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 2337f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitUnaryPostInc(const UnaryOperator *E) { 2347f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return VisitPrePostIncDec(E, true, false); 2357f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 2367f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitUnaryPreDec(const UnaryOperator *E) { 2377f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return VisitPrePostIncDec(E, false, true); 2387f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 2397f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitUnaryPreInc(const UnaryOperator *E) { 2407f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return VisitPrePostIncDec(E, true, true); 2417f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 2427f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitUnaryAddrOf(const UnaryOperator *E) { 2437f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return EmitLValue(E->getSubExpr()).getAddress(); 2447f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 2457f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitUnaryDeref(const Expr *E) { return EmitLoadOfLValue(E); } 2467f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitUnaryPlus(const UnaryOperator *E) { 2477f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Visit(E->getSubExpr()); 2487f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 2497f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitUnaryMinus (const UnaryOperator *E); 2507f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitUnaryNot (const UnaryOperator *E); 2517f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitUnaryLNot (const UnaryOperator *E); 25246f93d021a1778442c1c4a53f0b94a68bfae3be5Chris Lattner Value *VisitUnaryReal (const UnaryOperator *E); 25346f93d021a1778442c1c4a53f0b94a68bfae3be5Chris Lattner Value *VisitUnaryImag (const UnaryOperator *E); 2547f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitUnaryExtension(const UnaryOperator *E) { 2557f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Visit(E->getSubExpr()); 2567f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 2575a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson Value *VisitUnaryOffsetOf(const UnaryOperator *E); 25804421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner Value *VisitCXXDefaultArgExpr(CXXDefaultArgExpr *DAE) { 25904421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner return Visit(DAE->getExpr()); 26004421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner } 2615a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson 2627f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Binary Operators. 2637f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *EmitMul(const BinOpInfo &Ops) { 2647f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateMul(Ops.LHS, Ops.RHS, "mul"); 2657f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 2667f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *EmitDiv(const BinOpInfo &Ops); 2677f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *EmitRem(const BinOpInfo &Ops); 2687f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *EmitAdd(const BinOpInfo &Ops); 2697f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *EmitSub(const BinOpInfo &Ops); 2707f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *EmitShl(const BinOpInfo &Ops); 2717f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *EmitShr(const BinOpInfo &Ops); 2727f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *EmitAnd(const BinOpInfo &Ops) { 2737f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateAnd(Ops.LHS, Ops.RHS, "and"); 2747f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 2757f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *EmitXor(const BinOpInfo &Ops) { 2767f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateXor(Ops.LHS, Ops.RHS, "xor"); 2777f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 2787f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *EmitOr (const BinOpInfo &Ops) { 2797f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateOr(Ops.LHS, Ops.RHS, "or"); 2807f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 2817f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 2821f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner BinOpInfo EmitBinOps(const BinaryOperator *E); 2833ccf774256382ef9aa95028eaad82f54a3d0b0adChris Lattner Value *EmitCompoundAssign(const CompoundAssignOperator *E, 2841f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner Value *(ScalarExprEmitter::*F)(const BinOpInfo &)); 2851f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner 2861f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner // Binary operators and binary compound assignment operators. 2871f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner#define HANDLEBINOP(OP) \ 2883ccf774256382ef9aa95028eaad82f54a3d0b0adChris Lattner Value *VisitBin ## OP(const BinaryOperator *E) { \ 2893ccf774256382ef9aa95028eaad82f54a3d0b0adChris Lattner return Emit ## OP(EmitBinOps(E)); \ 2903ccf774256382ef9aa95028eaad82f54a3d0b0adChris Lattner } \ 2913ccf774256382ef9aa95028eaad82f54a3d0b0adChris Lattner Value *VisitBin ## OP ## Assign(const CompoundAssignOperator *E) { \ 2923ccf774256382ef9aa95028eaad82f54a3d0b0adChris Lattner return EmitCompoundAssign(E, &ScalarExprEmitter::Emit ## OP); \ 2931f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner } 2941f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner HANDLEBINOP(Mul); 2951f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner HANDLEBINOP(Div); 2961f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner HANDLEBINOP(Rem); 2971f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner HANDLEBINOP(Add); 2988c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar HANDLEBINOP(Sub); 2991f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner HANDLEBINOP(Shl); 3001f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner HANDLEBINOP(Shr); 3011f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner HANDLEBINOP(And); 3021f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner HANDLEBINOP(Xor); 3031f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner HANDLEBINOP(Or); 3041f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner#undef HANDLEBINOP 3058c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar 3067f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Comparisons. 3077f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *EmitCompare(const BinaryOperator *E, unsigned UICmpOpc, 3087f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner unsigned SICmpOpc, unsigned FCmpOpc); 3097f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner#define VISITCOMP(CODE, UI, SI, FP) \ 3107f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitBin##CODE(const BinaryOperator *E) { \ 3117f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return EmitCompare(E, llvm::ICmpInst::UI, llvm::ICmpInst::SI, \ 3127f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner llvm::FCmpInst::FP); } 3137f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner VISITCOMP(LT, ICMP_ULT, ICMP_SLT, FCMP_OLT); 3147f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner VISITCOMP(GT, ICMP_UGT, ICMP_SGT, FCMP_OGT); 3157f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner VISITCOMP(LE, ICMP_ULE, ICMP_SLE, FCMP_OLE); 3167f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner VISITCOMP(GE, ICMP_UGE, ICMP_SGE, FCMP_OGE); 3177f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner VISITCOMP(EQ, ICMP_EQ , ICMP_EQ , FCMP_OEQ); 3187f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner VISITCOMP(NE, ICMP_NE , ICMP_NE , FCMP_UNE); 3197f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner#undef VISITCOMP 3207f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 3217f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitBinAssign (const BinaryOperator *E); 3227f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 3237f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitBinLAnd (const BinaryOperator *E); 3247f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitBinLOr (const BinaryOperator *E); 3257f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitBinComma (const BinaryOperator *E); 3267f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 3277f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Other Operators. 328df6b68c9487aed2042c7fc23db10a79f89083a11Mike Stump Value *VisitBlockExpr(const BlockExpr *BE); 3297f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitConditionalOperator(const ConditionalOperator *CO); 3307f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitChooseExpr(ChooseExpr *CE); 3317c50aca2fe36f6daa9bf1c8c428f30e72f96470aAnders Carlsson Value *VisitVAArgExpr(VAArgExpr *VE); 3327f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitObjCStringLiteral(const ObjCStringLiteral *E) { 3337f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return CGF.EmitObjCStringLiteral(E); 3347f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 3357f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner}; 3367f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} // end anonymous namespace. 3377f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 3387f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner//===----------------------------------------------------------------------===// 3397f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner// Utilities 3407f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner//===----------------------------------------------------------------------===// 3417f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 3429abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner/// EmitConversionToBool - Convert the specified expression value to a 3433420d0de2c52fedf771d7ef20522f6080233e377Chris Lattner/// boolean (i1) truth value. This is equivalent to "Val != 0". 3449abc84e7ac4db891209fe67cc3a8c9690dc886efChris LattnerValue *ScalarExprEmitter::EmitConversionToBool(Value *Src, QualType SrcType) { 3459abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner assert(SrcType->isCanonical() && "EmitScalarConversion strips typedefs"); 3469abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner 3479abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner if (SrcType->isRealFloatingType()) { 3489abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner // Compare against 0.0 for fp scalars. 3499abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner llvm::Value *Zero = llvm::Constant::getNullValue(Src->getType()); 3509abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner return Builder.CreateFCmpUNE(Src, Zero, "tobool"); 3519abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner } 3529abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner 353d1d66bcd6914ff82abdfa88dd25bb0b74cde3b99Daniel Dunbar assert((SrcType->isIntegerType() || isa<llvm::PointerType>(Src->getType())) && 3549abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner "Unknown scalar type to convert"); 3559abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner 3569abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner // Because of the type rules of C, we often end up computing a logical value, 3579abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner // then zero extending it to int, then wanting it as a logical value again. 3589abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner // Optimize this common case. 3599abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner if (llvm::ZExtInst *ZI = dyn_cast<llvm::ZExtInst>(Src)) { 3609abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner if (ZI->getOperand(0)->getType() == llvm::Type::Int1Ty) { 3619abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner Value *Result = ZI->getOperand(0); 362356916ec84826a793b0353e5db0e9a7589b9ec5cEli Friedman // If there aren't any more uses, zap the instruction to save space. 363356916ec84826a793b0353e5db0e9a7589b9ec5cEli Friedman // Note that there can be more uses, for example if this 364356916ec84826a793b0353e5db0e9a7589b9ec5cEli Friedman // is the result of an assignment. 365356916ec84826a793b0353e5db0e9a7589b9ec5cEli Friedman if (ZI->use_empty()) 366356916ec84826a793b0353e5db0e9a7589b9ec5cEli Friedman ZI->eraseFromParent(); 3679abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner return Result; 3689abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner } 3699abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner } 3709abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner 3719abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner // Compare against an integer or pointer null. 3729abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner llvm::Value *Zero = llvm::Constant::getNullValue(Src->getType()); 3739abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner return Builder.CreateICmpNE(Src, Zero, "tobool"); 3749abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner} 3759abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner 3763707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner/// EmitScalarConversion - Emit a conversion from the specified type to the 3773707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner/// specified destination type, both of which are LLVM scalar types. 3784f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris LattnerValue *ScalarExprEmitter::EmitScalarConversion(Value *Src, QualType SrcType, 3794f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner QualType DstType) { 3809619662a1d42e2008b865d3459c0677e149dad1bChris Lattner SrcType = CGF.getContext().getCanonicalType(SrcType); 3819619662a1d42e2008b865d3459c0677e149dad1bChris Lattner DstType = CGF.getContext().getCanonicalType(DstType); 3823707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner if (SrcType == DstType) return Src; 383cf289083ab007264fa3ea96d92f133339aee5d2dChris Lattner 384cf289083ab007264fa3ea96d92f133339aee5d2dChris Lattner if (DstType->isVoidType()) return 0; 3853707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner 3863707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner // Handle conversions to bool first, they are special: comparisons against 0. 387ed70f0a53610e5e4d4a62cfc0be48d8c1539b5ffChris Lattner if (DstType->isBooleanType()) 388ed70f0a53610e5e4d4a62cfc0be48d8c1539b5ffChris Lattner return EmitConversionToBool(Src, SrcType); 3893707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner 3903707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner const llvm::Type *DstTy = ConvertType(DstType); 3913707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner 3923707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner // Ignore conversions like int -> uint. 3933707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner if (Src->getType() == DstTy) 3943707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner return Src; 3953707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner 396270cc66683b22d6bb0b4644f5a40f84d45edf119Daniel Dunbar // Handle pointer conversions next: pointers can only be converted 397270cc66683b22d6bb0b4644f5a40f84d45edf119Daniel Dunbar // to/from other pointers and integers. Check for pointer types in 398270cc66683b22d6bb0b4644f5a40f84d45edf119Daniel Dunbar // terms of LLVM, as some native types (like Obj-C id) may map to a 399270cc66683b22d6bb0b4644f5a40f84d45edf119Daniel Dunbar // pointer type. 400270cc66683b22d6bb0b4644f5a40f84d45edf119Daniel Dunbar if (isa<llvm::PointerType>(DstTy)) { 4013707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner // The source value may be an integer, or a pointer. 4023707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner if (isa<llvm::PointerType>(Src->getType())) 4033707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner return Builder.CreateBitCast(Src, DstTy, "conv"); 4043707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner assert(SrcType->isIntegerType() && "Not ptr->ptr or int->ptr conversion?"); 40525615424741bcce31fe52c896f76268f0307f00dEli Friedman // First, convert to the correct width so that we control the kind of 40625615424741bcce31fe52c896f76268f0307f00dEli Friedman // extension. 40725615424741bcce31fe52c896f76268f0307f00dEli Friedman const llvm::Type *MiddleTy = llvm::IntegerType::get(CGF.LLVMPointerWidth); 40825615424741bcce31fe52c896f76268f0307f00dEli Friedman bool InputSigned = SrcType->isSignedIntegerType(); 40925615424741bcce31fe52c896f76268f0307f00dEli Friedman llvm::Value* IntResult = 41025615424741bcce31fe52c896f76268f0307f00dEli Friedman Builder.CreateIntCast(Src, MiddleTy, InputSigned, "conv"); 41125615424741bcce31fe52c896f76268f0307f00dEli Friedman // Then, cast to pointer. 41225615424741bcce31fe52c896f76268f0307f00dEli Friedman return Builder.CreateIntToPtr(IntResult, DstTy, "conv"); 4133707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner } 4143707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner 415270cc66683b22d6bb0b4644f5a40f84d45edf119Daniel Dunbar if (isa<llvm::PointerType>(Src->getType())) { 4163707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner // Must be an ptr to int cast. 4173707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner assert(isa<llvm::IntegerType>(DstTy) && "not ptr->int?"); 41850b5a30db40322880340e957ad7d6d8d60bb4c5bAnders Carlsson return Builder.CreatePtrToInt(Src, DstTy, "conv"); 4193707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner } 4203707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner 421213541a68a3e137d11d2cefb612c6cdb410d7e8eNate Begeman // A scalar can be splatted to an extended vector of the same element type 4226fe7c8aa8c7546743ecd0ac0138c2cf5d8155386Nate Begeman if (DstType->isExtVectorType() && !isa<VectorType>(SrcType)) { 4236fe7c8aa8c7546743ecd0ac0138c2cf5d8155386Nate Begeman // Cast the scalar to element type 4246fe7c8aa8c7546743ecd0ac0138c2cf5d8155386Nate Begeman QualType EltTy = DstType->getAsExtVectorType()->getElementType(); 4256fe7c8aa8c7546743ecd0ac0138c2cf5d8155386Nate Begeman llvm::Value *Elt = EmitScalarConversion(Src, SrcType, EltTy); 4266fe7c8aa8c7546743ecd0ac0138c2cf5d8155386Nate Begeman 4276fe7c8aa8c7546743ecd0ac0138c2cf5d8155386Nate Begeman // Insert the element in element zero of an undef vector 4286fe7c8aa8c7546743ecd0ac0138c2cf5d8155386Nate Begeman llvm::Value *UnV = llvm::UndefValue::get(DstTy); 4296fe7c8aa8c7546743ecd0ac0138c2cf5d8155386Nate Begeman llvm::Value *Idx = llvm::ConstantInt::get(llvm::Type::Int32Ty, 0); 4306fe7c8aa8c7546743ecd0ac0138c2cf5d8155386Nate Begeman UnV = Builder.CreateInsertElement(UnV, Elt, Idx, "tmp"); 4316fe7c8aa8c7546743ecd0ac0138c2cf5d8155386Nate Begeman 4326fe7c8aa8c7546743ecd0ac0138c2cf5d8155386Nate Begeman // Splat the element across to all elements 4336fe7c8aa8c7546743ecd0ac0138c2cf5d8155386Nate Begeman llvm::SmallVector<llvm::Constant*, 16> Args; 4346fe7c8aa8c7546743ecd0ac0138c2cf5d8155386Nate Begeman unsigned NumElements = cast<llvm::VectorType>(DstTy)->getNumElements(); 4356fe7c8aa8c7546743ecd0ac0138c2cf5d8155386Nate Begeman for (unsigned i = 0; i < NumElements; i++) 4366fe7c8aa8c7546743ecd0ac0138c2cf5d8155386Nate Begeman Args.push_back(llvm::ConstantInt::get(llvm::Type::Int32Ty, 0)); 4376fe7c8aa8c7546743ecd0ac0138c2cf5d8155386Nate Begeman 4386fe7c8aa8c7546743ecd0ac0138c2cf5d8155386Nate Begeman llvm::Constant *Mask = llvm::ConstantVector::get(&Args[0], NumElements); 4396fe7c8aa8c7546743ecd0ac0138c2cf5d8155386Nate Begeman llvm::Value *Yay = Builder.CreateShuffleVector(UnV, UnV, Mask, "splat"); 4406fe7c8aa8c7546743ecd0ac0138c2cf5d8155386Nate Begeman return Yay; 4416fe7c8aa8c7546743ecd0ac0138c2cf5d8155386Nate Begeman } 4424119d1aeca8016654d381ce079864058d1709571Nate Begeman 4433b1ae004d0ee88fc029dad876ec5695f178ef3f6Chris Lattner // Allow bitcast from vector to integer/fp of the same size. 4447019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson if (isa<llvm::VectorType>(Src->getType()) || 4453b1ae004d0ee88fc029dad876ec5695f178ef3f6Chris Lattner isa<llvm::VectorType>(DstTy)) 4467019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson return Builder.CreateBitCast(Src, DstTy, "conv"); 4477019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson 4483707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner // Finally, we have the arithmetic types: real int/float. 4493707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner if (isa<llvm::IntegerType>(Src->getType())) { 4503707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner bool InputSigned = SrcType->isSignedIntegerType(); 451b5ce097bb741733e24efd7803f29849be227f8ceAnders Carlsson if (isa<llvm::IntegerType>(DstTy)) 452b5ce097bb741733e24efd7803f29849be227f8ceAnders Carlsson return Builder.CreateIntCast(Src, DstTy, InputSigned, "conv"); 453b5ce097bb741733e24efd7803f29849be227f8ceAnders Carlsson else if (InputSigned) 454b5ce097bb741733e24efd7803f29849be227f8ceAnders Carlsson return Builder.CreateSIToFP(Src, DstTy, "conv"); 455b5ce097bb741733e24efd7803f29849be227f8ceAnders Carlsson else 456b5ce097bb741733e24efd7803f29849be227f8ceAnders Carlsson return Builder.CreateUIToFP(Src, DstTy, "conv"); 4573707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner } 4583707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner 4593707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner assert(Src->getType()->isFloatingPoint() && "Unknown real conversion"); 4603707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner if (isa<llvm::IntegerType>(DstTy)) { 461b5ce097bb741733e24efd7803f29849be227f8ceAnders Carlsson if (DstType->isSignedIntegerType()) 462b5ce097bb741733e24efd7803f29849be227f8ceAnders Carlsson return Builder.CreateFPToSI(Src, DstTy, "conv"); 463b5ce097bb741733e24efd7803f29849be227f8ceAnders Carlsson else 464b5ce097bb741733e24efd7803f29849be227f8ceAnders Carlsson return Builder.CreateFPToUI(Src, DstTy, "conv"); 4653707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner } 4663707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner 4673707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner assert(DstTy->isFloatingPoint() && "Unknown real conversion"); 468b5ce097bb741733e24efd7803f29849be227f8ceAnders Carlsson if (DstTy->getTypeID() < Src->getType()->getTypeID()) 469b5ce097bb741733e24efd7803f29849be227f8ceAnders Carlsson return Builder.CreateFPTrunc(Src, DstTy, "conv"); 470b5ce097bb741733e24efd7803f29849be227f8ceAnders Carlsson else 471b5ce097bb741733e24efd7803f29849be227f8ceAnders Carlsson return Builder.CreateFPExt(Src, DstTy, "conv"); 4723707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner} 4733707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner 4744f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner/// EmitComplexToScalarConversion - Emit a conversion from the specified 4754f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner/// complex type to the specified destination type, where the destination 4764f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner/// type is an LLVM scalar type. 4774f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris LattnerValue *ScalarExprEmitter:: 4784f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris LattnerEmitComplexToScalarConversion(CodeGenFunction::ComplexPairTy Src, 4794f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner QualType SrcTy, QualType DstTy) { 480ed70f0a53610e5e4d4a62cfc0be48d8c1539b5ffChris Lattner // Get the source element type. 4819619662a1d42e2008b865d3459c0677e149dad1bChris Lattner SrcTy = SrcTy->getAsComplexType()->getElementType(); 482ed70f0a53610e5e4d4a62cfc0be48d8c1539b5ffChris Lattner 483ed70f0a53610e5e4d4a62cfc0be48d8c1539b5ffChris Lattner // Handle conversions to bool first, they are special: comparisons against 0. 484ed70f0a53610e5e4d4a62cfc0be48d8c1539b5ffChris Lattner if (DstTy->isBooleanType()) { 485ed70f0a53610e5e4d4a62cfc0be48d8c1539b5ffChris Lattner // Complex != 0 -> (Real != 0) | (Imag != 0) 486ed70f0a53610e5e4d4a62cfc0be48d8c1539b5ffChris Lattner Src.first = EmitScalarConversion(Src.first, SrcTy, DstTy); 487ed70f0a53610e5e4d4a62cfc0be48d8c1539b5ffChris Lattner Src.second = EmitScalarConversion(Src.second, SrcTy, DstTy); 488ed70f0a53610e5e4d4a62cfc0be48d8c1539b5ffChris Lattner return Builder.CreateOr(Src.first, Src.second, "tobool"); 489ed70f0a53610e5e4d4a62cfc0be48d8c1539b5ffChris Lattner } 490ed70f0a53610e5e4d4a62cfc0be48d8c1539b5ffChris Lattner 4914f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner // C99 6.3.1.7p2: "When a value of complex type is converted to a real type, 4924f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner // the imaginary part of the complex value is discarded and the value of the 4934f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner // real part is converted according to the conversion rules for the 4944f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner // corresponding real type. 4954f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner return EmitScalarConversion(Src.first, SrcTy, DstTy); 4964f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner} 4974f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner 4984f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner 4997f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner//===----------------------------------------------------------------------===// 5007f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner// Visitor Methods 5017f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner//===----------------------------------------------------------------------===// 5027f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 5037f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::VisitExpr(Expr *E) { 504488e993a135ce700b982bf099c3d6b856301d642Daniel Dunbar CGF.ErrorUnsupported(E, "scalar expression"); 5057f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner if (E->getType()->isVoidType()) 5067f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return 0; 5077f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return llvm::UndefValue::get(CGF.ConvertType(E->getType())); 5087f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 5097f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 510d38617c8a50f9729c254ab76cd359af797c6739bEli FriedmanValue *ScalarExprEmitter::VisitShuffleVectorExpr(ShuffleVectorExpr *E) { 511d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman llvm::SmallVector<llvm::Constant*, 32> indices; 512d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman for (unsigned i = 2; i < E->getNumSubExprs(); i++) { 513d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman indices.push_back(cast<llvm::Constant>(CGF.EmitScalarExpr(E->getExpr(i)))); 514d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman } 515d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman Value* V1 = CGF.EmitScalarExpr(E->getExpr(0)); 516d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman Value* V2 = CGF.EmitScalarExpr(E->getExpr(1)); 517d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman Value* SV = llvm::ConstantVector::get(indices.begin(), indices.size()); 518d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman return Builder.CreateShuffleVector(V1, V2, SV, "shuffle"); 519d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman} 520d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman 5217f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::VisitArraySubscriptExpr(ArraySubscriptExpr *E) { 5227f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Emit subscript expressions in rvalue context's. For most cases, this just 5237f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // loads the lvalue formed by the subscript expr. However, we have to be 5247f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // careful, because the base of a vector subscript is occasionally an rvalue, 5257f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // so we can't get it as an lvalue. 5267f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner if (!E->getBase()->getType()->isVectorType()) 5277f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return EmitLoadOfLValue(E); 5287f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 5297f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Handle the vector case. The base must be a vector, the index must be an 5307f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // integer value. 5317f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *Base = Visit(E->getBase()); 5327f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *Idx = Visit(E->getIdx()); 533daa24a29f881fb2ae53c4022e593eda1adf4b95bEli Friedman bool IdxSigned = E->getIdx()->getType()->isSignedIntegerType(); 534daa24a29f881fb2ae53c4022e593eda1adf4b95bEli Friedman Idx = Builder.CreateIntCast(Idx, llvm::IntegerType::get(32), 535daa24a29f881fb2ae53c4022e593eda1adf4b95bEli Friedman IdxSigned, "vecidxcast"); 5367f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateExtractElement(Base, Idx, "vecext"); 5377f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 5387f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 5397f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner/// VisitImplicitCastExpr - Implicit casts are the same as normal casts, but 5407f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner/// also handle things like function to pointer-to-function decay, and array to 5417f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner/// pointer decay. 5427f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::VisitImplicitCastExpr(const ImplicitCastExpr *E) { 5437f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner const Expr *Op = E->getSubExpr(); 5447f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 5457f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // If this is due to array->pointer conversion, emit the array expression as 5467f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // an l-value. 5477f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner if (Op->getType()->isArrayType()) { 5484f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner Value *V = EmitLValue(Op).getAddress(); // Bitfields can't be arrays. 5498f39f5e96ce4a5f401f431f61db7df1cf05dce6fEli Friedman 550daa24a29f881fb2ae53c4022e593eda1adf4b95bEli Friedman // Note that VLA pointers are always decayed, so we don't need to do 551daa24a29f881fb2ae53c4022e593eda1adf4b95bEli Friedman // anything here. 5528f39f5e96ce4a5f401f431f61db7df1cf05dce6fEli Friedman if (!Op->getType()->isVariableArrayType()) { 5538f39f5e96ce4a5f401f431f61db7df1cf05dce6fEli Friedman assert(isa<llvm::PointerType>(V->getType()) && "Expected pointer"); 5548f39f5e96ce4a5f401f431f61db7df1cf05dce6fEli Friedman assert(isa<llvm::ArrayType>(cast<llvm::PointerType>(V->getType()) 5558f39f5e96ce4a5f401f431f61db7df1cf05dce6fEli Friedman ->getElementType()) && 5568f39f5e96ce4a5f401f431f61db7df1cf05dce6fEli Friedman "Expected pointer to array"); 5578f39f5e96ce4a5f401f431f61db7df1cf05dce6fEli Friedman V = Builder.CreateStructGEP(V, 0, "arraydecay"); 558662174c82ef46b19a2329c7d37208e1d12dfb7b3Daniel Dunbar } 559a9e6372208ad77eb2cae639a8a17c86551ac1937Chris Lattner 560a9e6372208ad77eb2cae639a8a17c86551ac1937Chris Lattner // The resultant pointer type can be implicitly casted to other pointer 561f31627f676374812d0355d7e34fd2e940b400757Chris Lattner // types as well (e.g. void*) and can be implicitly converted to integer. 562f31627f676374812d0355d7e34fd2e940b400757Chris Lattner const llvm::Type *DestTy = ConvertType(E->getType()); 563f31627f676374812d0355d7e34fd2e940b400757Chris Lattner if (V->getType() != DestTy) { 564f31627f676374812d0355d7e34fd2e940b400757Chris Lattner if (isa<llvm::PointerType>(DestTy)) 565f31627f676374812d0355d7e34fd2e940b400757Chris Lattner V = Builder.CreateBitCast(V, DestTy, "ptrconv"); 566f31627f676374812d0355d7e34fd2e940b400757Chris Lattner else { 567f31627f676374812d0355d7e34fd2e940b400757Chris Lattner assert(isa<llvm::IntegerType>(DestTy) && "Unknown array decay"); 568f31627f676374812d0355d7e34fd2e940b400757Chris Lattner V = Builder.CreatePtrToInt(V, DestTy, "ptrconv"); 569f31627f676374812d0355d7e34fd2e940b400757Chris Lattner } 570f31627f676374812d0355d7e34fd2e940b400757Chris Lattner } 571a9e6372208ad77eb2cae639a8a17c86551ac1937Chris Lattner return V; 5727f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 573daa24a29f881fb2ae53c4022e593eda1adf4b95bEli Friedman 5747f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return EmitCastExpr(Op, E->getType()); 5757f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 5767f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 5777f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 5787f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner// VisitCastExpr - Emit code for an explicit or implicit cast. Implicit casts 5797f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner// have to handle a more broad range of conversions than explicit casts, as they 5807f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner// handle things like function to ptr-to-function decay etc. 5817f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::EmitCastExpr(const Expr *E, QualType DestTy) { 58258a2e944faa16f1f61439acd2e71b19f50189511Chris Lattner // Handle cases where the source is an non-complex type. 58319a1d7c646729eb858b15583e647262a22de3637Chris Lattner 58419a1d7c646729eb858b15583e647262a22de3637Chris Lattner if (!CGF.hasAggregateLLVMType(E->getType())) { 5853707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner Value *Src = Visit(const_cast<Expr*>(E)); 5863707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner 5873707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner // Use EmitScalarConversion to perform the conversion. 5883707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner return EmitScalarConversion(Src, E->getType(), DestTy); 5893707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner } 59019a1d7c646729eb858b15583e647262a22de3637Chris Lattner 5919b2dc287177394a8f73833e2ad4f7ca8cd6f22bbChris Lattner if (E->getType()->isAnyComplexType()) { 59219a1d7c646729eb858b15583e647262a22de3637Chris Lattner // Handle cases where the source is a complex type. 59319a1d7c646729eb858b15583e647262a22de3637Chris Lattner return EmitComplexToScalarConversion(CGF.EmitComplexExpr(E), E->getType(), 59419a1d7c646729eb858b15583e647262a22de3637Chris Lattner DestTy); 59519a1d7c646729eb858b15583e647262a22de3637Chris Lattner } 59610b00cfe6422906b223724048b9b2123968d3baaChris Lattner 59719a1d7c646729eb858b15583e647262a22de3637Chris Lattner // Okay, this is a cast from an aggregate. It must be a cast to void. Just 59819a1d7c646729eb858b15583e647262a22de3637Chris Lattner // evaluate the result and return. 59919a1d7c646729eb858b15583e647262a22de3637Chris Lattner CGF.EmitAggExpr(E, 0, false); 60019a1d7c646729eb858b15583e647262a22de3637Chris Lattner return 0; 6017f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 6027f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 6033379320c10001d7e1ee5d7e7142c417f797cfe82Chris LattnerValue *ScalarExprEmitter::VisitStmtExpr(const StmtExpr *E) { 60491d723da7b68be5245c3ac58aa2a36d04658cfb8Chris Lattner return CGF.EmitCompoundStmt(*E->getSubStmt(), 60591d723da7b68be5245c3ac58aa2a36d04658cfb8Chris Lattner !E->getType()->isVoidType()).getScalarVal(); 6063379320c10001d7e1ee5d7e7142c417f797cfe82Chris Lattner} 6073379320c10001d7e1ee5d7e7142c417f797cfe82Chris Lattner 608a99038c0757a836c6faeeddaa5dfd249b32f6e9eMike StumpValue *ScalarExprEmitter::VisitBlockDeclRefExpr(const BlockDeclRefExpr *E) { 609a99038c0757a836c6faeeddaa5dfd249b32f6e9eMike Stump return Builder.CreateLoad(CGF.GetAddrOfBlockDecl(E), false, "tmp"); 6104e7a1f7682d94811bd41fca8aefccc38f686db23Mike Stump} 6113379320c10001d7e1ee5d7e7142c417f797cfe82Chris Lattner 6127f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner//===----------------------------------------------------------------------===// 6137f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner// Unary Operators 6147f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner//===----------------------------------------------------------------------===// 6157f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 6167f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::VisitPrePostIncDec(const UnaryOperator *E, 617dfce2a51a78455c915722bc05f07c41e600220c9Chris Lattner bool isInc, bool isPre) { 6187f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner LValue LV = EmitLValue(E->getSubExpr()); 619f52bbeb1ce55aa10b4519024258b8962777fa8d4Eli Friedman QualType ValTy = E->getSubExpr()->getType(); 620f52bbeb1ce55aa10b4519024258b8962777fa8d4Eli Friedman Value *InVal = CGF.EmitLoadOfLValue(LV, ValTy).getScalarVal(); 6217f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 6227f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner int AmountVal = isInc ? 1 : -1; 623daa24a29f881fb2ae53c4022e593eda1adf4b95bEli Friedman 624daa24a29f881fb2ae53c4022e593eda1adf4b95bEli Friedman if (ValTy->isPointerType() && 625daa24a29f881fb2ae53c4022e593eda1adf4b95bEli Friedman ValTy->getAsPointerType()->isVariableArrayType()) { 626daa24a29f881fb2ae53c4022e593eda1adf4b95bEli Friedman // The amount of the addition/subtraction needs to account for the VLA size 627daa24a29f881fb2ae53c4022e593eda1adf4b95bEli Friedman CGF.ErrorUnsupported(E, "VLA pointer inc/dec"); 628daa24a29f881fb2ae53c4022e593eda1adf4b95bEli Friedman } 629daa24a29f881fb2ae53c4022e593eda1adf4b95bEli Friedman 6307f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *NextVal; 6318cc9d08eb8b2652ca939d724ab64dec906e418a0Chris Lattner if (const llvm::PointerType *PT = 6328cc9d08eb8b2652ca939d724ab64dec906e418a0Chris Lattner dyn_cast<llvm::PointerType>(InVal->getType())) { 6338cc9d08eb8b2652ca939d724ab64dec906e418a0Chris Lattner llvm::Constant *Inc =llvm::ConstantInt::get(llvm::Type::Int32Ty, AmountVal); 6348cc9d08eb8b2652ca939d724ab64dec906e418a0Chris Lattner if (!isa<llvm::FunctionType>(PT->getElementType())) { 6358cc9d08eb8b2652ca939d724ab64dec906e418a0Chris Lattner NextVal = Builder.CreateGEP(InVal, Inc, "ptrincdec"); 6368cc9d08eb8b2652ca939d724ab64dec906e418a0Chris Lattner } else { 6378cc9d08eb8b2652ca939d724ab64dec906e418a0Chris Lattner const llvm::Type *i8Ty = llvm::PointerType::getUnqual(llvm::Type::Int8Ty); 6388cc9d08eb8b2652ca939d724ab64dec906e418a0Chris Lattner NextVal = Builder.CreateBitCast(InVal, i8Ty, "tmp"); 6398cc9d08eb8b2652ca939d724ab64dec906e418a0Chris Lattner NextVal = Builder.CreateGEP(NextVal, Inc, "ptrincdec"); 6408cc9d08eb8b2652ca939d724ab64dec906e418a0Chris Lattner NextVal = Builder.CreateBitCast(NextVal, InVal->getType()); 6418cc9d08eb8b2652ca939d724ab64dec906e418a0Chris Lattner } 642db3bd4b4eabc325781a6a407c3dcf68a8d6db0f9Chris Lattner } else if (InVal->getType() == llvm::Type::Int1Ty && isInc) { 643db3bd4b4eabc325781a6a407c3dcf68a8d6db0f9Chris Lattner // Bool++ is an interesting case, due to promotion rules, we get: 644db3bd4b4eabc325781a6a407c3dcf68a8d6db0f9Chris Lattner // Bool++ -> Bool = Bool+1 -> Bool = (int)Bool+1 -> 645db3bd4b4eabc325781a6a407c3dcf68a8d6db0f9Chris Lattner // Bool = ((int)Bool+1) != 0 646db3bd4b4eabc325781a6a407c3dcf68a8d6db0f9Chris Lattner // An interesting aspect of this is that increment is always true. 647db3bd4b4eabc325781a6a407c3dcf68a8d6db0f9Chris Lattner // Decrement does not have this property. 648db3bd4b4eabc325781a6a407c3dcf68a8d6db0f9Chris Lattner NextVal = llvm::ConstantInt::getTrue(); 649e936cc8890b94e83f530453c8c9167fb5de9b5faChris Lattner } else { 650e936cc8890b94e83f530453c8c9167fb5de9b5faChris Lattner // Add the inc/dec to the real part. 651e936cc8890b94e83f530453c8c9167fb5de9b5faChris Lattner if (isa<llvm::IntegerType>(InVal->getType())) 652e936cc8890b94e83f530453c8c9167fb5de9b5faChris Lattner NextVal = llvm::ConstantInt::get(InVal->getType(), AmountVal); 653ca2617c0e1f87c9da4d9aa3db4ea854ee2f6a1daChris Lattner else if (InVal->getType() == llvm::Type::FloatTy) 654e9b8c0a38549692f1b8f688c05c35442fc620865Devang Patel NextVal = 65559138ba7ce960888433546639deb45e2e03f8857Chris Lattner llvm::ConstantFP::get(llvm::APFloat(static_cast<float>(AmountVal))); 65625ddea7f7835c4b1804e458a5c866cde0097430aChris Lattner else if (InVal->getType() == llvm::Type::DoubleTy) 657e9b8c0a38549692f1b8f688c05c35442fc620865Devang Patel NextVal = 65859138ba7ce960888433546639deb45e2e03f8857Chris Lattner llvm::ConstantFP::get(llvm::APFloat(static_cast<double>(AmountVal))); 65925ddea7f7835c4b1804e458a5c866cde0097430aChris Lattner else { 66025ddea7f7835c4b1804e458a5c866cde0097430aChris Lattner llvm::APFloat F(static_cast<float>(AmountVal)); 661ee5a700af3fe9ae1a639c271f093f40677dddc04Dale Johannesen bool ignored; 662ee5a700af3fe9ae1a639c271f093f40677dddc04Dale Johannesen F.convert(CGF.Target.getLongDoubleFormat(), llvm::APFloat::rmTowardZero, 663ee5a700af3fe9ae1a639c271f093f40677dddc04Dale Johannesen &ignored); 66425ddea7f7835c4b1804e458a5c866cde0097430aChris Lattner NextVal = llvm::ConstantFP::get(F); 665ca2617c0e1f87c9da4d9aa3db4ea854ee2f6a1daChris Lattner } 666e936cc8890b94e83f530453c8c9167fb5de9b5faChris Lattner NextVal = Builder.CreateAdd(InVal, NextVal, isInc ? "inc" : "dec"); 667e936cc8890b94e83f530453c8c9167fb5de9b5faChris Lattner } 6687f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 6697f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Store the updated result through the lvalue. 670f52bbeb1ce55aa10b4519024258b8962777fa8d4Eli Friedman if (LV.isBitfield()) 671f52bbeb1ce55aa10b4519024258b8962777fa8d4Eli Friedman CGF.EmitStoreThroughBitfieldLValue(RValue::get(NextVal), LV, ValTy, 672f52bbeb1ce55aa10b4519024258b8962777fa8d4Eli Friedman &NextVal); 673f52bbeb1ce55aa10b4519024258b8962777fa8d4Eli Friedman else 674f52bbeb1ce55aa10b4519024258b8962777fa8d4Eli Friedman CGF.EmitStoreThroughLValue(RValue::get(NextVal), LV, ValTy); 6757f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 6767f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // If this is a postinc, return the value read from memory, otherwise use the 6777f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // updated value. 6787f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return isPre ? NextVal : InVal; 6797f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 6807f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 6817f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 6827f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::VisitUnaryMinus(const UnaryOperator *E) { 6837f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *Op = Visit(E->getSubExpr()); 6847f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateNeg(Op, "neg"); 6857f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 6867f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 6877f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::VisitUnaryNot(const UnaryOperator *E) { 6887f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *Op = Visit(E->getSubExpr()); 6897f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateNot(Op, "neg"); 6907f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 6917f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 6927f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::VisitUnaryLNot(const UnaryOperator *E) { 6937f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Compare operand to zero. 6947f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *BoolVal = CGF.EvaluateExprAsBool(E->getSubExpr()); 6957f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 6967f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Invert value. 6977f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // TODO: Could dynamically modify easy computations here. For example, if 6987f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // the operand is an icmp ne, turn into icmp eq. 6997f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner BoolVal = Builder.CreateNot(BoolVal, "lnot"); 7007f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 7017f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // ZExt result to int. 7027f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateZExt(BoolVal, CGF.LLVMIntTy, "lnot.ext"); 7037f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 7047f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 7050518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl/// VisitSizeOfAlignOfExpr - Return the size or alignment of the type of 7060518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl/// argument of the sizeof expression as an integer. 7070518999d3adcc289997bd974dce90cc97f5c1c44Sebastian RedlValue * 7080518999d3adcc289997bd974dce90cc97f5c1c44Sebastian RedlScalarExprEmitter::VisitSizeOfAlignOfExpr(const SizeOfAlignOfExpr *E) { 7090518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl QualType TypeToSize = E->getTypeOfArgument(); 710f2da9dfef96dc11b7b5effb1d02cb427b2d71599Eli Friedman if (E->isSizeOf()) { 711f2da9dfef96dc11b7b5effb1d02cb427b2d71599Eli Friedman if (const VariableArrayType *VAT = 712f2da9dfef96dc11b7b5effb1d02cb427b2d71599Eli Friedman CGF.getContext().getAsVariableArrayType(TypeToSize)) { 713f2da9dfef96dc11b7b5effb1d02cb427b2d71599Eli Friedman if (E->isArgumentType()) { 714f2da9dfef96dc11b7b5effb1d02cb427b2d71599Eli Friedman // sizeof(type) - make sure to emit the VLA size. 715f2da9dfef96dc11b7b5effb1d02cb427b2d71599Eli Friedman CGF.EmitVLASize(TypeToSize); 716f2da9dfef96dc11b7b5effb1d02cb427b2d71599Eli Friedman } 7176cd586d2668653501ecd73d53e81cbc76db3a18cAnders Carlsson 71896f214776c0f69069fee4d67557c8c7f416009a8Anders Carlsson return CGF.GetVLASize(VAT); 719b50525ba0e996bc072cdb76152fcfe0bc64bb72aAnders Carlsson } 7205d46315ca3cbbfe0d0f5f65520b618fb05dd4446Anders Carlsson } 721f2da9dfef96dc11b7b5effb1d02cb427b2d71599Eli Friedman 722f2da9dfef96dc11b7b5effb1d02cb427b2d71599Eli Friedman // If this isn't sizeof(vla), the result must be constant; use the 723f2da9dfef96dc11b7b5effb1d02cb427b2d71599Eli Friedman // constant folding logic so we don't have to duplicate it here. 724f2da9dfef96dc11b7b5effb1d02cb427b2d71599Eli Friedman Expr::EvalResult Result; 725f2da9dfef96dc11b7b5effb1d02cb427b2d71599Eli Friedman E->Evaluate(Result, CGF.getContext()); 726f2da9dfef96dc11b7b5effb1d02cb427b2d71599Eli Friedman return llvm::ConstantInt::get(Result.Val.getInt()); 7277f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 7287f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 72946f93d021a1778442c1c4a53f0b94a68bfae3be5Chris LattnerValue *ScalarExprEmitter::VisitUnaryReal(const UnaryOperator *E) { 73046f93d021a1778442c1c4a53f0b94a68bfae3be5Chris Lattner Expr *Op = E->getSubExpr(); 7319b2dc287177394a8f73833e2ad4f7ca8cd6f22bbChris Lattner if (Op->getType()->isAnyComplexType()) 73246f93d021a1778442c1c4a53f0b94a68bfae3be5Chris Lattner return CGF.EmitComplexExpr(Op).first; 73346f93d021a1778442c1c4a53f0b94a68bfae3be5Chris Lattner return Visit(Op); 73446f93d021a1778442c1c4a53f0b94a68bfae3be5Chris Lattner} 73546f93d021a1778442c1c4a53f0b94a68bfae3be5Chris LattnerValue *ScalarExprEmitter::VisitUnaryImag(const UnaryOperator *E) { 73646f93d021a1778442c1c4a53f0b94a68bfae3be5Chris Lattner Expr *Op = E->getSubExpr(); 7379b2dc287177394a8f73833e2ad4f7ca8cd6f22bbChris Lattner if (Op->getType()->isAnyComplexType()) 73846f93d021a1778442c1c4a53f0b94a68bfae3be5Chris Lattner return CGF.EmitComplexExpr(Op).second; 73936f8406db837957b24b926fd657af909e1b12665Chris Lattner 74036f8406db837957b24b926fd657af909e1b12665Chris Lattner // __imag on a scalar returns zero. Emit it the subexpr to ensure side 74136f8406db837957b24b926fd657af909e1b12665Chris Lattner // effects are evaluated. 74236f8406db837957b24b926fd657af909e1b12665Chris Lattner CGF.EmitScalarExpr(Op); 74336f8406db837957b24b926fd657af909e1b12665Chris Lattner return llvm::Constant::getNullValue(ConvertType(E->getType())); 74446f93d021a1778442c1c4a53f0b94a68bfae3be5Chris Lattner} 74546f93d021a1778442c1c4a53f0b94a68bfae3be5Chris Lattner 7465a1deb8d9c0722beae28d693fa137bbb942bd11fAnders CarlssonValue *ScalarExprEmitter::VisitUnaryOffsetOf(const UnaryOperator *E) 7475a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson{ 74835183aca180a2b9b2c637cd625a40a7e147d6a32Eli Friedman Value* ResultAsPtr = EmitLValue(E->getSubExpr()).getAddress(); 749769e411b72465a63454cdd416ff26ff313d43505Eli Friedman const llvm::Type* ResultType = ConvertType(E->getType()); 75035183aca180a2b9b2c637cd625a40a7e147d6a32Eli Friedman return Builder.CreatePtrToInt(ResultAsPtr, ResultType, "offsetof"); 7515a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson} 75246f93d021a1778442c1c4a53f0b94a68bfae3be5Chris Lattner 7537f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner//===----------------------------------------------------------------------===// 7547f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner// Binary Operators 7557f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner//===----------------------------------------------------------------------===// 7567f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 7577f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerBinOpInfo ScalarExprEmitter::EmitBinOps(const BinaryOperator *E) { 7587f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner BinOpInfo Result; 7597f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Result.LHS = Visit(E->getLHS()); 7607f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Result.RHS = Visit(E->getRHS()); 7611f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner Result.Ty = E->getType(); 7627f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Result.E = E; 7637f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Result; 7647f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 7657f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 7663ccf774256382ef9aa95028eaad82f54a3d0b0adChris LattnerValue *ScalarExprEmitter::EmitCompoundAssign(const CompoundAssignOperator *E, 7671f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner Value *(ScalarExprEmitter::*Func)(const BinOpInfo &)) { 7681f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner QualType LHSTy = E->getLHS()->getType(), RHSTy = E->getRHS()->getType(); 7691f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner 7701f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner BinOpInfo OpInfo; 7711f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner 772ab3a852ae713189444dcbf75e70accf1e8c2b7f2Eli Friedman if (E->getComputationResultType()->isAnyComplexType()) { 773daa24a29f881fb2ae53c4022e593eda1adf4b95bEli Friedman // This needs to go through the complex expression emitter, but 774ab3a852ae713189444dcbf75e70accf1e8c2b7f2Eli Friedman // it's a tad complicated to do that... I'm leaving it out for now. 775ab3a852ae713189444dcbf75e70accf1e8c2b7f2Eli Friedman // (Note that we do actually need the imaginary part of the RHS for 776ab3a852ae713189444dcbf75e70accf1e8c2b7f2Eli Friedman // multiplication and division.) 777ab3a852ae713189444dcbf75e70accf1e8c2b7f2Eli Friedman CGF.ErrorUnsupported(E, "complex compound assignment"); 778ab3a852ae713189444dcbf75e70accf1e8c2b7f2Eli Friedman return llvm::UndefValue::get(CGF.ConvertType(E->getType())); 7791f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner } 7808c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar 781ab3a852ae713189444dcbf75e70accf1e8c2b7f2Eli Friedman // Load/convert the LHS. 782ab3a852ae713189444dcbf75e70accf1e8c2b7f2Eli Friedman LValue LHSLV = EmitLValue(E->getLHS()); 783ab3a852ae713189444dcbf75e70accf1e8c2b7f2Eli Friedman OpInfo.LHS = EmitLoadOfLValue(LHSLV, LHSTy); 784ab3a852ae713189444dcbf75e70accf1e8c2b7f2Eli Friedman OpInfo.LHS = EmitScalarConversion(OpInfo.LHS, LHSTy, 785ab3a852ae713189444dcbf75e70accf1e8c2b7f2Eli Friedman E->getComputationLHSType()); 786ab3a852ae713189444dcbf75e70accf1e8c2b7f2Eli Friedman // Emit the RHS. 787ab3a852ae713189444dcbf75e70accf1e8c2b7f2Eli Friedman OpInfo.RHS = Visit(E->getRHS()); 788ab3a852ae713189444dcbf75e70accf1e8c2b7f2Eli Friedman OpInfo.Ty = E->getComputationResultType(); 7891f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner OpInfo.E = E; 7901f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner 7911f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner // Expand the binary operator. 7921f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner Value *Result = (this->*Func)(OpInfo); 7931f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner 7948c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // Convert the result back to the LHS type. 795ab3a852ae713189444dcbf75e70accf1e8c2b7f2Eli Friedman Result = EmitScalarConversion(Result, E->getComputationResultType(), LHSTy); 796ab3a852ae713189444dcbf75e70accf1e8c2b7f2Eli Friedman 797ed3849b456d64d124bddc7ac044f3ce590bd9d69Daniel Dunbar // Store the result value into the LHS lvalue. Bit-fields are 798371d16f45aeec61c1d07687f763d92137e133642Daniel Dunbar // handled specially because the result is altered by the store, 799371d16f45aeec61c1d07687f763d92137e133642Daniel Dunbar // i.e., [C99 6.5.16p1] 'An assignment expression has the value of 800371d16f45aeec61c1d07687f763d92137e133642Daniel Dunbar // the left operand after the assignment...'. 8011849128c7d88247d914f05efe4c03907f0932174Eli Friedman if (LHSLV.isBitfield()) 802ed3849b456d64d124bddc7ac044f3ce590bd9d69Daniel Dunbar CGF.EmitStoreThroughBitfieldLValue(RValue::get(Result), LHSLV, LHSTy, 803ed3849b456d64d124bddc7ac044f3ce590bd9d69Daniel Dunbar &Result); 804ed3849b456d64d124bddc7ac044f3ce590bd9d69Daniel Dunbar else 805ed3849b456d64d124bddc7ac044f3ce590bd9d69Daniel Dunbar CGF.EmitStoreThroughLValue(RValue::get(Result), LHSLV, LHSTy); 806ed3849b456d64d124bddc7ac044f3ce590bd9d69Daniel Dunbar 8071f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner return Result; 8081f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner} 8091f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner 8101f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner 8117f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::EmitDiv(const BinOpInfo &Ops) { 812b3ab8dc7d3b2e24259b990ac4ad75abfd07fa1f9Nate Begeman if (Ops.LHS->getType()->isFPOrFPVector()) 8137f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateFDiv(Ops.LHS, Ops.RHS, "div"); 8141f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner else if (Ops.Ty->isUnsignedIntegerType()) 8157f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateUDiv(Ops.LHS, Ops.RHS, "div"); 8167f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner else 8177f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateSDiv(Ops.LHS, Ops.RHS, "div"); 8187f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 8197f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 8207f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::EmitRem(const BinOpInfo &Ops) { 8217f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Rem in C can't be a floating point type: C99 6.5.5p2. 8221f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner if (Ops.Ty->isUnsignedIntegerType()) 8237f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateURem(Ops.LHS, Ops.RHS, "rem"); 8247f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner else 8257f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateSRem(Ops.LHS, Ops.RHS, "rem"); 8267f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 8277f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 8287f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 8297f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::EmitAdd(const BinOpInfo &Ops) { 8301f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner if (!Ops.Ty->isPointerType()) 8317f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateAdd(Ops.LHS, Ops.RHS, "add"); 832daa24a29f881fb2ae53c4022e593eda1adf4b95bEli Friedman 833daa24a29f881fb2ae53c4022e593eda1adf4b95bEli Friedman if (Ops.Ty->getAsPointerType()->isVariableArrayType()) { 834daa24a29f881fb2ae53c4022e593eda1adf4b95bEli Friedman // The amount of the addition needs to account for the VLA size 835daa24a29f881fb2ae53c4022e593eda1adf4b95bEli Friedman CGF.ErrorUnsupported(Ops.E, "VLA pointer addition"); 836daa24a29f881fb2ae53c4022e593eda1adf4b95bEli Friedman } 8378f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner Value *Ptr, *Idx; 8388f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner Expr *IdxExp; 839b09fae74acfae7af8b3d31b9638a0aa0fdf7c7acDaniel Dunbar const PointerType *PT; 840b09fae74acfae7af8b3d31b9638a0aa0fdf7c7acDaniel Dunbar if ((PT = Ops.E->getLHS()->getType()->getAsPointerType())) { 8418f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner Ptr = Ops.LHS; 8428f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner Idx = Ops.RHS; 8438f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner IdxExp = Ops.E->getRHS(); 8448f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner } else { // int + pointer 845b09fae74acfae7af8b3d31b9638a0aa0fdf7c7acDaniel Dunbar PT = Ops.E->getRHS()->getType()->getAsPointerType(); 846b09fae74acfae7af8b3d31b9638a0aa0fdf7c7acDaniel Dunbar assert(PT && "Invalid add expr"); 8478f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner Ptr = Ops.RHS; 8488f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner Idx = Ops.LHS; 8498f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner IdxExp = Ops.E->getLHS(); 8508f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner } 8518f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner 8528f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner unsigned Width = cast<llvm::IntegerType>(Idx->getType())->getBitWidth(); 8538f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner if (Width < CGF.LLVMPointerWidth) { 8548f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner // Zero or sign extend the pointer value based on whether the index is 8558f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner // signed or not. 8568f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner const llvm::Type *IdxType = llvm::IntegerType::get(CGF.LLVMPointerWidth); 8579619662a1d42e2008b865d3459c0677e149dad1bChris Lattner if (IdxExp->getType()->isSignedIntegerType()) 8588f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner Idx = Builder.CreateSExt(Idx, IdxType, "idx.ext"); 8598f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner else 8608f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner Idx = Builder.CreateZExt(Idx, IdxType, "idx.ext"); 8618f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner } 862b09fae74acfae7af8b3d31b9638a0aa0fdf7c7acDaniel Dunbar 863b09fae74acfae7af8b3d31b9638a0aa0fdf7c7acDaniel Dunbar // Explicitly handle GNU void* and function pointer arithmetic 864b09fae74acfae7af8b3d31b9638a0aa0fdf7c7acDaniel Dunbar // extensions. The GNU void* casts amount to no-ops since our void* 865b09fae74acfae7af8b3d31b9638a0aa0fdf7c7acDaniel Dunbar // type is i8*, but this is future proof. 866b09fae74acfae7af8b3d31b9638a0aa0fdf7c7acDaniel Dunbar const QualType ElementType = PT->getPointeeType(); 867b09fae74acfae7af8b3d31b9638a0aa0fdf7c7acDaniel Dunbar if (ElementType->isVoidType() || ElementType->isFunctionType()) { 868b09fae74acfae7af8b3d31b9638a0aa0fdf7c7acDaniel Dunbar const llvm::Type *i8Ty = llvm::PointerType::getUnqual(llvm::Type::Int8Ty); 869b09fae74acfae7af8b3d31b9638a0aa0fdf7c7acDaniel Dunbar Value *Casted = Builder.CreateBitCast(Ptr, i8Ty); 870b09fae74acfae7af8b3d31b9638a0aa0fdf7c7acDaniel Dunbar Value *Res = Builder.CreateGEP(Casted, Idx, "sub.ptr"); 871b09fae74acfae7af8b3d31b9638a0aa0fdf7c7acDaniel Dunbar return Builder.CreateBitCast(Res, Ptr->getType()); 872b09fae74acfae7af8b3d31b9638a0aa0fdf7c7acDaniel Dunbar } 8738f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner 8748f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner return Builder.CreateGEP(Ptr, Idx, "add.ptr"); 8757f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 8767f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 8777f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::EmitSub(const BinOpInfo &Ops) { 8787f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner if (!isa<llvm::PointerType>(Ops.LHS->getType())) 8797f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateSub(Ops.LHS, Ops.RHS, "sub"); 8801f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner 881daa24a29f881fb2ae53c4022e593eda1adf4b95bEli Friedman if (Ops.E->getLHS()->getType()->getAsPointerType()->isVariableArrayType()) { 882daa24a29f881fb2ae53c4022e593eda1adf4b95bEli Friedman // The amount of the addition needs to account for the VLA size for 883daa24a29f881fb2ae53c4022e593eda1adf4b95bEli Friedman // ptr-int 884daa24a29f881fb2ae53c4022e593eda1adf4b95bEli Friedman // The amount of the division needs to account for the VLA size for 885daa24a29f881fb2ae53c4022e593eda1adf4b95bEli Friedman // ptr-ptr. 886daa24a29f881fb2ae53c4022e593eda1adf4b95bEli Friedman CGF.ErrorUnsupported(Ops.E, "VLA pointer subtraction"); 887daa24a29f881fb2ae53c4022e593eda1adf4b95bEli Friedman } 888daa24a29f881fb2ae53c4022e593eda1adf4b95bEli Friedman 889b09fae74acfae7af8b3d31b9638a0aa0fdf7c7acDaniel Dunbar const QualType LHSType = Ops.E->getLHS()->getType(); 890b09fae74acfae7af8b3d31b9638a0aa0fdf7c7acDaniel Dunbar const QualType LHSElementType = LHSType->getAsPointerType()->getPointeeType(); 8918c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar if (!isa<llvm::PointerType>(Ops.RHS->getType())) { 8928c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // pointer - int 8938c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar Value *Idx = Ops.RHS; 8948c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar unsigned Width = cast<llvm::IntegerType>(Idx->getType())->getBitWidth(); 8958c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar if (Width < CGF.LLVMPointerWidth) { 8968c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // Zero or sign extend the pointer value based on whether the index is 8978c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // signed or not. 8988c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar const llvm::Type *IdxType = llvm::IntegerType::get(CGF.LLVMPointerWidth); 8998c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar if (Ops.E->getRHS()->getType()->isSignedIntegerType()) 9008c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar Idx = Builder.CreateSExt(Idx, IdxType, "idx.ext"); 9018c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar else 9028c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar Idx = Builder.CreateZExt(Idx, IdxType, "idx.ext"); 9038c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar } 9048c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar Idx = Builder.CreateNeg(Idx, "sub.ptr.neg"); 905b09fae74acfae7af8b3d31b9638a0aa0fdf7c7acDaniel Dunbar 906b09fae74acfae7af8b3d31b9638a0aa0fdf7c7acDaniel Dunbar // Explicitly handle GNU void* and function pointer arithmetic 907b09fae74acfae7af8b3d31b9638a0aa0fdf7c7acDaniel Dunbar // extensions. The GNU void* casts amount to no-ops since our 908b09fae74acfae7af8b3d31b9638a0aa0fdf7c7acDaniel Dunbar // void* type is i8*, but this is future proof. 909b09fae74acfae7af8b3d31b9638a0aa0fdf7c7acDaniel Dunbar if (LHSElementType->isVoidType() || LHSElementType->isFunctionType()) { 910b09fae74acfae7af8b3d31b9638a0aa0fdf7c7acDaniel Dunbar const llvm::Type *i8Ty = llvm::PointerType::getUnqual(llvm::Type::Int8Ty); 911b09fae74acfae7af8b3d31b9638a0aa0fdf7c7acDaniel Dunbar Value *LHSCasted = Builder.CreateBitCast(Ops.LHS, i8Ty); 912b09fae74acfae7af8b3d31b9638a0aa0fdf7c7acDaniel Dunbar Value *Res = Builder.CreateGEP(LHSCasted, Idx, "sub.ptr"); 913b09fae74acfae7af8b3d31b9638a0aa0fdf7c7acDaniel Dunbar return Builder.CreateBitCast(Res, Ops.LHS->getType()); 914b09fae74acfae7af8b3d31b9638a0aa0fdf7c7acDaniel Dunbar } 915b09fae74acfae7af8b3d31b9638a0aa0fdf7c7acDaniel Dunbar 9168c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar return Builder.CreateGEP(Ops.LHS, Idx, "sub.ptr"); 917820b03398fdcc8f1f6c60ace55b708e311fa8ce4Daniel Dunbar } else { 9188c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // pointer - pointer 9198c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar Value *LHS = Ops.LHS; 9208c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar Value *RHS = Ops.RHS; 9211f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner 9228c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar uint64_t ElementSize; 923820b03398fdcc8f1f6c60ace55b708e311fa8ce4Daniel Dunbar 924e5ed15195b71b8fa440e67d49db0168bb58e4e8aChris Lattner // Handle GCC extension for pointer arithmetic on void* and function pointer 925e5ed15195b71b8fa440e67d49db0168bb58e4e8aChris Lattner // types. 926e5ed15195b71b8fa440e67d49db0168bb58e4e8aChris Lattner if (LHSElementType->isVoidType() || LHSElementType->isFunctionType()) { 9278c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar ElementSize = 1; 9288c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar } else { 9298c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar ElementSize = CGF.getContext().getTypeSize(LHSElementType) / 8; 9308c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar } 9318c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar 9328c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar const llvm::Type *ResultType = ConvertType(Ops.Ty); 9338c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar LHS = Builder.CreatePtrToInt(LHS, ResultType, "sub.ptr.lhs.cast"); 9348c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar RHS = Builder.CreatePtrToInt(RHS, ResultType, "sub.ptr.rhs.cast"); 9358c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar Value *BytesBetween = Builder.CreateSub(LHS, RHS, "sub.ptr.sub"); 9368c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar 937e5ed15195b71b8fa440e67d49db0168bb58e4e8aChris Lattner // Optimize out the shift for element size of 1. 938e5ed15195b71b8fa440e67d49db0168bb58e4e8aChris Lattner if (ElementSize == 1) 939e5ed15195b71b8fa440e67d49db0168bb58e4e8aChris Lattner return BytesBetween; 940e5ed15195b71b8fa440e67d49db0168bb58e4e8aChris Lattner 9418c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // HACK: LLVM doesn't have an divide instruction that 'knows' there is no 9428c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // remainder. As such, we handle common power-of-two cases here to generate 9438c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // better code. See PR2247. 9448c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar if (llvm::isPowerOf2_64(ElementSize)) { 9458c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar Value *ShAmt = 9468c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar llvm::ConstantInt::get(ResultType, llvm::Log2_64(ElementSize)); 9478c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar return Builder.CreateAShr(BytesBetween, ShAmt, "sub.ptr.shr"); 9488c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar } 9498c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar 9508c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // Otherwise, do a full sdiv. 9518c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar Value *BytesPerElt = llvm::ConstantInt::get(ResultType, ElementSize); 9528c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar return Builder.CreateSDiv(BytesBetween, BytesPerElt, "sub.ptr.div"); 9537f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 9547f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 9557f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 9567f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::EmitShl(const BinOpInfo &Ops) { 9577f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // LLVM requires the LHS and RHS to be the same type: promote or truncate the 9587f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // RHS to the same size as the LHS. 9597f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *RHS = Ops.RHS; 9607f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner if (Ops.LHS->getType() != RHS->getType()) 9617f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner RHS = Builder.CreateIntCast(RHS, Ops.LHS->getType(), false, "sh_prom"); 9627f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 9637f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateShl(Ops.LHS, RHS, "shl"); 9647f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 9657f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 9667f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::EmitShr(const BinOpInfo &Ops) { 9677f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // LLVM requires the LHS and RHS to be the same type: promote or truncate the 9687f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // RHS to the same size as the LHS. 9697f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *RHS = Ops.RHS; 9707f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner if (Ops.LHS->getType() != RHS->getType()) 9717f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner RHS = Builder.CreateIntCast(RHS, Ops.LHS->getType(), false, "sh_prom"); 9727f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 9731f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner if (Ops.Ty->isUnsignedIntegerType()) 9747f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateLShr(Ops.LHS, RHS, "shr"); 9757f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateAShr(Ops.LHS, RHS, "shr"); 9767f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 9777f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 9787f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::EmitCompare(const BinaryOperator *E,unsigned UICmpOpc, 9797f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner unsigned SICmpOpc, unsigned FCmpOpc) { 9804f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner Value *Result; 9817f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner QualType LHSTy = E->getLHS()->getType(); 9827a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman if (!LHSTy->isAnyComplexType() && !LHSTy->isVectorType()) { 9837f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *LHS = Visit(E->getLHS()); 9847f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *RHS = Visit(E->getRHS()); 9857f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 9867f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner if (LHS->getType()->isFloatingPoint()) { 9877a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman Result = Builder.CreateFCmp((llvm::CmpInst::Predicate)FCmpOpc, 9887f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner LHS, RHS, "cmp"); 989ec2c12646aee07bf6bb1b4092d538d5860fd0661Eli Friedman } else if (LHSTy->isSignedIntegerType()) { 990ec2c12646aee07bf6bb1b4092d538d5860fd0661Eli Friedman Result = Builder.CreateICmp((llvm::ICmpInst::Predicate)SICmpOpc, 9917f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner LHS, RHS, "cmp"); 9927f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } else { 993ec2c12646aee07bf6bb1b4092d538d5860fd0661Eli Friedman // Unsigned integers and pointers. 994ec2c12646aee07bf6bb1b4092d538d5860fd0661Eli Friedman Result = Builder.CreateICmp((llvm::ICmpInst::Predicate)UICmpOpc, 9957f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner LHS, RHS, "cmp"); 9967f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 9977a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman } else if (LHSTy->isVectorType()) { 9987a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman Value *LHS = Visit(E->getLHS()); 9997a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman Value *RHS = Visit(E->getRHS()); 10007a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman 10017a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman if (LHS->getType()->isFPOrFPVector()) { 10027a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman Result = Builder.CreateVFCmp((llvm::CmpInst::Predicate)FCmpOpc, 10037a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman LHS, RHS, "cmp"); 10047a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman } else if (LHSTy->isUnsignedIntegerType()) { 10057a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman Result = Builder.CreateVICmp((llvm::CmpInst::Predicate)UICmpOpc, 10067a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman LHS, RHS, "cmp"); 10077a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman } else { 10087a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman // Signed integers and pointers. 10097a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman Result = Builder.CreateVICmp((llvm::CmpInst::Predicate)SICmpOpc, 10107a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman LHS, RHS, "cmp"); 10117a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman } 10127a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman return Result; 10137f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } else { 10147f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Complex Comparison: can only be an equality comparison. 10157f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner CodeGenFunction::ComplexPairTy LHS = CGF.EmitComplexExpr(E->getLHS()); 10167f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner CodeGenFunction::ComplexPairTy RHS = CGF.EmitComplexExpr(E->getRHS()); 10177f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 10189619662a1d42e2008b865d3459c0677e149dad1bChris Lattner QualType CETy = LHSTy->getAsComplexType()->getElementType(); 10197f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 10204f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner Value *ResultR, *ResultI; 10217f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner if (CETy->isRealFloatingType()) { 10227f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner ResultR = Builder.CreateFCmp((llvm::FCmpInst::Predicate)FCmpOpc, 10237f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner LHS.first, RHS.first, "cmp.r"); 10247f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner ResultI = Builder.CreateFCmp((llvm::FCmpInst::Predicate)FCmpOpc, 10257f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner LHS.second, RHS.second, "cmp.i"); 10267f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } else { 10277f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Complex comparisons can only be equality comparisons. As such, signed 10287f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // and unsigned opcodes are the same. 10297f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner ResultR = Builder.CreateICmp((llvm::ICmpInst::Predicate)UICmpOpc, 10307f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner LHS.first, RHS.first, "cmp.r"); 10317f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner ResultI = Builder.CreateICmp((llvm::ICmpInst::Predicate)UICmpOpc, 10327f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner LHS.second, RHS.second, "cmp.i"); 10337f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 10347f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 10357f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner if (E->getOpcode() == BinaryOperator::EQ) { 10367f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Result = Builder.CreateAnd(ResultR, ResultI, "and.ri"); 10377f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } else { 10387f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner assert(E->getOpcode() == BinaryOperator::NE && 10397f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner "Complex comparison other than == or != ?"); 10407f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Result = Builder.CreateOr(ResultR, ResultI, "or.ri"); 10417f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 10427f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 104332f6209ea9a5a88ad3f8d7ad5e5b160b403d12daNuno Lopes 104432f6209ea9a5a88ad3f8d7ad5e5b160b403d12daNuno Lopes return EmitScalarConversion(Result, CGF.getContext().BoolTy, E->getType()); 10457f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 10467f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 10477f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::VisitBinAssign(const BinaryOperator *E) { 10487f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner LValue LHS = EmitLValue(E->getLHS()); 10497f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *RHS = Visit(E->getRHS()); 10507f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 1051ed3849b456d64d124bddc7ac044f3ce590bd9d69Daniel Dunbar // Store the value into the LHS. Bit-fields are handled specially 1052371d16f45aeec61c1d07687f763d92137e133642Daniel Dunbar // because the result is altered by the store, i.e., [C99 6.5.16p1] 1053371d16f45aeec61c1d07687f763d92137e133642Daniel Dunbar // 'An assignment expression has the value of the left operand after 1054daa24a29f881fb2ae53c4022e593eda1adf4b95bEli Friedman // the assignment...'. 10551849128c7d88247d914f05efe4c03907f0932174Eli Friedman if (LHS.isBitfield()) 1056ed3849b456d64d124bddc7ac044f3ce590bd9d69Daniel Dunbar CGF.EmitStoreThroughBitfieldLValue(RValue::get(RHS), LHS, E->getType(), 1057ed3849b456d64d124bddc7ac044f3ce590bd9d69Daniel Dunbar &RHS); 1058ed3849b456d64d124bddc7ac044f3ce590bd9d69Daniel Dunbar else 1059ed3849b456d64d124bddc7ac044f3ce590bd9d69Daniel Dunbar CGF.EmitStoreThroughLValue(RValue::get(RHS), LHS, E->getType()); 106085c59edda02df48fae8dc85049743319bc6e7e89Daniel Dunbar 10617f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Return the RHS. 10627f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return RHS; 10637f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 10647f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 10657f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::VisitBinLAnd(const BinaryOperator *E) { 106620eb09d562b80420a3328be789547af354bf3e36Chris Lattner // If we have 0 && RHS, see if we can elide RHS, if so, just return 0. 106720eb09d562b80420a3328be789547af354bf3e36Chris Lattner // If we have 1 && X, just emit X without inserting the control flow. 106820eb09d562b80420a3328be789547af354bf3e36Chris Lattner if (int Cond = CGF.ConstantFoldsToSimpleInteger(E->getLHS())) { 106920eb09d562b80420a3328be789547af354bf3e36Chris Lattner if (Cond == 1) { // If we have 1 && X, just emit X. 10700946ccd1e58c1f1da31ddbca67c5b6301ac8b255Chris Lattner Value *RHSCond = CGF.EvaluateExprAsBool(E->getRHS()); 10710946ccd1e58c1f1da31ddbca67c5b6301ac8b255Chris Lattner // ZExt result to int. 10720946ccd1e58c1f1da31ddbca67c5b6301ac8b255Chris Lattner return Builder.CreateZExt(RHSCond, CGF.LLVMIntTy, "land.ext"); 10730946ccd1e58c1f1da31ddbca67c5b6301ac8b255Chris Lattner } 107420eb09d562b80420a3328be789547af354bf3e36Chris Lattner 107520eb09d562b80420a3328be789547af354bf3e36Chris Lattner // 0 && RHS: If it is safe, just elide the RHS, and return 0. 107620eb09d562b80420a3328be789547af354bf3e36Chris Lattner if (!CGF.ContainsLabel(E->getRHS())) 107720eb09d562b80420a3328be789547af354bf3e36Chris Lattner return llvm::Constant::getNullValue(CGF.LLVMIntTy); 10780946ccd1e58c1f1da31ddbca67c5b6301ac8b255Chris Lattner } 10790946ccd1e58c1f1da31ddbca67c5b6301ac8b255Chris Lattner 10809615ecb44f549ae9fa2b4db6ff46bc78befbf62cDaniel Dunbar llvm::BasicBlock *ContBlock = CGF.createBasicBlock("land.end"); 10819615ecb44f549ae9fa2b4db6ff46bc78befbf62cDaniel Dunbar llvm::BasicBlock *RHSBlock = CGF.createBasicBlock("land.rhs"); 108220eb09d562b80420a3328be789547af354bf3e36Chris Lattner 1083f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner // Branch on the LHS first. If it is false, go to the failure (cont) block. 1084f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner CGF.EmitBranchOnBoolExpr(E->getLHS(), RHSBlock, ContBlock); 1085f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner 1086f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner // Any edges into the ContBlock are now from an (indeterminate number of) 1087f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner // edges from this first condition. All of these values will be false. Start 1088f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner // setting up the PHI node in the Cont Block for this. 1089f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner llvm::PHINode *PN = llvm::PHINode::Create(llvm::Type::Int1Ty, "", ContBlock); 1090f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner PN->reserveOperandSpace(2); // Normal case, two inputs. 1091f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner for (llvm::pred_iterator PI = pred_begin(ContBlock), PE = pred_end(ContBlock); 1092f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner PI != PE; ++PI) 1093f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner PN->addIncoming(llvm::ConstantInt::getFalse(), *PI); 10947f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 10957f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner CGF.EmitBlock(RHSBlock); 10967f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *RHSCond = CGF.EvaluateExprAsBool(E->getRHS()); 10977f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 10987f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Reaquire the RHS block, as there may be subblocks inserted. 10997f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner RHSBlock = Builder.GetInsertBlock(); 1100f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner 1101f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner // Emit an unconditional branch from this block to ContBlock. Insert an entry 1102f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner // into the phi node for the edge with the value of RHSCond. 11037f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner CGF.EmitBlock(ContBlock); 11047f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner PN->addIncoming(RHSCond, RHSBlock); 11057f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 11067f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // ZExt result to int. 11077f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateZExt(PN, CGF.LLVMIntTy, "land.ext"); 11087f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 11097f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 11107f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::VisitBinLOr(const BinaryOperator *E) { 111120eb09d562b80420a3328be789547af354bf3e36Chris Lattner // If we have 1 || RHS, see if we can elide RHS, if so, just return 1. 111220eb09d562b80420a3328be789547af354bf3e36Chris Lattner // If we have 0 || X, just emit X without inserting the control flow. 111320eb09d562b80420a3328be789547af354bf3e36Chris Lattner if (int Cond = CGF.ConstantFoldsToSimpleInteger(E->getLHS())) { 111420eb09d562b80420a3328be789547af354bf3e36Chris Lattner if (Cond == -1) { // If we have 0 || X, just emit X. 11150946ccd1e58c1f1da31ddbca67c5b6301ac8b255Chris Lattner Value *RHSCond = CGF.EvaluateExprAsBool(E->getRHS()); 11160946ccd1e58c1f1da31ddbca67c5b6301ac8b255Chris Lattner // ZExt result to int. 11170946ccd1e58c1f1da31ddbca67c5b6301ac8b255Chris Lattner return Builder.CreateZExt(RHSCond, CGF.LLVMIntTy, "lor.ext"); 11180946ccd1e58c1f1da31ddbca67c5b6301ac8b255Chris Lattner } 111920eb09d562b80420a3328be789547af354bf3e36Chris Lattner 11208de8d1d3f2e21e4a72ac294276930ad293a3a765Eli Friedman // 1 || RHS: If it is safe, just elide the RHS, and return 1. 112120eb09d562b80420a3328be789547af354bf3e36Chris Lattner if (!CGF.ContainsLabel(E->getRHS())) 11228de8d1d3f2e21e4a72ac294276930ad293a3a765Eli Friedman return llvm::ConstantInt::get(CGF.LLVMIntTy, 1); 11230946ccd1e58c1f1da31ddbca67c5b6301ac8b255Chris Lattner } 11240946ccd1e58c1f1da31ddbca67c5b6301ac8b255Chris Lattner 11259615ecb44f549ae9fa2b4db6ff46bc78befbf62cDaniel Dunbar llvm::BasicBlock *ContBlock = CGF.createBasicBlock("lor.end"); 11269615ecb44f549ae9fa2b4db6ff46bc78befbf62cDaniel Dunbar llvm::BasicBlock *RHSBlock = CGF.createBasicBlock("lor.rhs"); 11277f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 1128f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner // Branch on the LHS first. If it is true, go to the success (cont) block. 1129f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner CGF.EmitBranchOnBoolExpr(E->getLHS(), ContBlock, RHSBlock); 1130f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner 1131f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner // Any edges into the ContBlock are now from an (indeterminate number of) 1132f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner // edges from this first condition. All of these values will be true. Start 1133f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner // setting up the PHI node in the Cont Block for this. 1134f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner llvm::PHINode *PN = llvm::PHINode::Create(llvm::Type::Int1Ty, "", ContBlock); 1135f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner PN->reserveOperandSpace(2); // Normal case, two inputs. 1136f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner for (llvm::pred_iterator PI = pred_begin(ContBlock), PE = pred_end(ContBlock); 1137f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner PI != PE; ++PI) 1138f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner PN->addIncoming(llvm::ConstantInt::getTrue(), *PI); 1139f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner 1140f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner // Emit the RHS condition as a bool value. 11417f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner CGF.EmitBlock(RHSBlock); 11427f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *RHSCond = CGF.EvaluateExprAsBool(E->getRHS()); 11437f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 11447f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Reaquire the RHS block, as there may be subblocks inserted. 11457f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner RHSBlock = Builder.GetInsertBlock(); 11467f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 1147f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner // Emit an unconditional branch from this block to ContBlock. Insert an entry 1148f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner // into the phi node for the edge with the value of RHSCond. 1149f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner CGF.EmitBlock(ContBlock); 11507f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner PN->addIncoming(RHSCond, RHSBlock); 11517f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 11527f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // ZExt result to int. 11537f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateZExt(PN, CGF.LLVMIntTy, "lor.ext"); 11547f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 11557f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 11567f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::VisitBinComma(const BinaryOperator *E) { 11577f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner CGF.EmitStmt(E->getLHS()); 1158a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar CGF.EnsureInsertPoint(); 11597f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Visit(E->getRHS()); 11607f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 11617f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 11627f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner//===----------------------------------------------------------------------===// 11637f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner// Other Operators 11647f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner//===----------------------------------------------------------------------===// 11657f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 11669802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner/// isCheapEnoughToEvaluateUnconditionally - Return true if the specified 11679802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner/// expression is cheap enough and side-effect-free enough to evaluate 11689802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner/// unconditionally instead of conditionally. This is used to convert control 11699802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner/// flow into selects in some cases. 11709802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattnerstatic bool isCheapEnoughToEvaluateUnconditionally(const Expr *E) { 11719802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner if (const ParenExpr *PE = dyn_cast<ParenExpr>(E)) 11729802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner return isCheapEnoughToEvaluateUnconditionally(PE->getSubExpr()); 11739802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner 11749802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner // TODO: Allow anything we can constant fold to an integer or fp constant. 11759802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner if (isa<IntegerLiteral>(E) || isa<CharacterLiteral>(E) || 11769802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner isa<FloatingLiteral>(E)) 11779802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner return true; 11789802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner 11799802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner // Non-volatile automatic variables too, to get "cond ? X : Y" where 11809802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner // X and Y are local variables. 11819802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E)) 11829802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner if (const VarDecl *VD = dyn_cast<VarDecl>(DRE->getDecl())) 11839802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner if (VD->hasLocalStorage() && !VD->getType().isVolatileQualified()) 11849802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner return true; 11859802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner 11869802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner return false; 11879802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner} 11889802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner 11899802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner 11907f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter:: 11917f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerVisitConditionalOperator(const ConditionalOperator *E) { 119231a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattner // If the condition constant folds and can be elided, try to avoid emitting 119331a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattner // the condition and the dead arm. 119431a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattner if (int Cond = CGF.ConstantFoldsToSimpleInteger(E->getCond())){ 1195c657e92d7b44568fe39ae018a69b18cbcc4ea3b0Chris Lattner Expr *Live = E->getLHS(), *Dead = E->getRHS(); 119631a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattner if (Cond == -1) 1197c657e92d7b44568fe39ae018a69b18cbcc4ea3b0Chris Lattner std::swap(Live, Dead); 119831a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattner 119931a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattner // If the dead side doesn't have labels we need, and if the Live side isn't 120031a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattner // the gnu missing ?: extension (which we could handle, but don't bother 120131a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattner // to), just emit the Live part. 120231a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattner if ((!Dead || !CGF.ContainsLabel(Dead)) && // No labels in dead part 120331a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattner Live) // Live part isn't missing. 120431a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattner return Visit(Live); 1205c657e92d7b44568fe39ae018a69b18cbcc4ea3b0Chris Lattner } 1206c657e92d7b44568fe39ae018a69b18cbcc4ea3b0Chris Lattner 12079802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner 12089802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner // If this is a really simple expression (like x ? 4 : 5), emit this as a 12099802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner // select instead of as control flow. We can only do this if it is cheap and 1210531a550531c144a58438f187816abbf1879e1c4eChris Lattner // safe to evaluate the LHS and RHS unconditionally. 12119802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner if (E->getLHS() && isCheapEnoughToEvaluateUnconditionally(E->getLHS()) && 12129802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner isCheapEnoughToEvaluateUnconditionally(E->getRHS())) { 12139802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner llvm::Value *CondV = CGF.EvaluateExprAsBool(E->getCond()); 12149802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner llvm::Value *LHS = Visit(E->getLHS()); 12159802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner llvm::Value *RHS = Visit(E->getRHS()); 12169802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner return Builder.CreateSelect(CondV, LHS, RHS, "cond"); 12179802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner } 12189802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner 12199802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner 1220be65abc8e41213ecb951f2f507fb2e13a151d30cDaniel Dunbar llvm::BasicBlock *LHSBlock = CGF.createBasicBlock("cond.true"); 1221be65abc8e41213ecb951f2f507fb2e13a151d30cDaniel Dunbar llvm::BasicBlock *RHSBlock = CGF.createBasicBlock("cond.false"); 12229615ecb44f549ae9fa2b4db6ff46bc78befbf62cDaniel Dunbar llvm::BasicBlock *ContBlock = CGF.createBasicBlock("cond.end"); 1223035cf4294319271ad19ddcc5ba327c8365f3575eChris Lattner Value *CondVal = 0; 1224035cf4294319271ad19ddcc5ba327c8365f3575eChris Lattner 122512d152f61ccef9a2c0372ba39be7cf416c6e1a9eChris Lattner // If we don't have the GNU missing condition extension, emit a branch on 122612d152f61ccef9a2c0372ba39be7cf416c6e1a9eChris Lattner // bool the normal way. 122712d152f61ccef9a2c0372ba39be7cf416c6e1a9eChris Lattner if (E->getLHS()) { 122812d152f61ccef9a2c0372ba39be7cf416c6e1a9eChris Lattner // Otherwise, just use EmitBranchOnBoolExpr to get small and simple code for 122912d152f61ccef9a2c0372ba39be7cf416c6e1a9eChris Lattner // the branch on bool. 123012d152f61ccef9a2c0372ba39be7cf416c6e1a9eChris Lattner CGF.EmitBranchOnBoolExpr(E->getCond(), LHSBlock, RHSBlock); 123112d152f61ccef9a2c0372ba39be7cf416c6e1a9eChris Lattner } else { 123212d152f61ccef9a2c0372ba39be7cf416c6e1a9eChris Lattner // Otherwise, for the ?: extension, evaluate the conditional and then 123312d152f61ccef9a2c0372ba39be7cf416c6e1a9eChris Lattner // convert it to bool the hard way. We do this explicitly because we need 123412d152f61ccef9a2c0372ba39be7cf416c6e1a9eChris Lattner // the unconverted value for the missing middle value of the ?:. 1235035cf4294319271ad19ddcc5ba327c8365f3575eChris Lattner CondVal = CGF.EmitScalarExpr(E->getCond()); 123612d152f61ccef9a2c0372ba39be7cf416c6e1a9eChris Lattner 123712d152f61ccef9a2c0372ba39be7cf416c6e1a9eChris Lattner // In some cases, EmitScalarConversion will delete the "CondVal" expression 123812d152f61ccef9a2c0372ba39be7cf416c6e1a9eChris Lattner // if there are no extra uses (an optimization). Inhibit this by making an 123912d152f61ccef9a2c0372ba39be7cf416c6e1a9eChris Lattner // extra dead use, because we're going to add a use of CondVal later. We 124012d152f61ccef9a2c0372ba39be7cf416c6e1a9eChris Lattner // don't use the builder for this, because we don't want it to get optimized 124112d152f61ccef9a2c0372ba39be7cf416c6e1a9eChris Lattner // away. This leaves dead code, but the ?: extension isn't common. 124212d152f61ccef9a2c0372ba39be7cf416c6e1a9eChris Lattner new llvm::BitCastInst(CondVal, CondVal->getType(), "dummy?:holder", 124312d152f61ccef9a2c0372ba39be7cf416c6e1a9eChris Lattner Builder.GetInsertBlock()); 124412d152f61ccef9a2c0372ba39be7cf416c6e1a9eChris Lattner 1245035cf4294319271ad19ddcc5ba327c8365f3575eChris Lattner Value *CondBoolVal = 1246035cf4294319271ad19ddcc5ba327c8365f3575eChris Lattner CGF.EmitScalarConversion(CondVal, E->getCond()->getType(), 1247035cf4294319271ad19ddcc5ba327c8365f3575eChris Lattner CGF.getContext().BoolTy); 1248035cf4294319271ad19ddcc5ba327c8365f3575eChris Lattner Builder.CreateCondBr(CondBoolVal, LHSBlock, RHSBlock); 1249035cf4294319271ad19ddcc5ba327c8365f3575eChris Lattner } 12507f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 12517f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner CGF.EmitBlock(LHSBlock); 12527f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 12537f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Handle the GNU extension for missing LHS. 1254a21ddb30e56026967d58e26c5212744e1831305bChris Lattner Value *LHS; 1255a21ddb30e56026967d58e26c5212744e1831305bChris Lattner if (E->getLHS()) 1256856226c37ff10955c7f3f07ce6fa9522da23a3a5Eli Friedman LHS = Visit(E->getLHS()); 1257a21ddb30e56026967d58e26c5212744e1831305bChris Lattner else // Perform promotions, to handle cases like "short ?: int" 1258a21ddb30e56026967d58e26c5212744e1831305bChris Lattner LHS = EmitScalarConversion(CondVal, E->getCond()->getType(), E->getType()); 1259a21ddb30e56026967d58e26c5212744e1831305bChris Lattner 12607f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner LHSBlock = Builder.GetInsertBlock(); 1261d57a871339c7c98d58d93108b806f59bdf4e13e2Daniel Dunbar CGF.EmitBranch(ContBlock); 12627f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 12637f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner CGF.EmitBlock(RHSBlock); 12647f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 1265856226c37ff10955c7f3f07ce6fa9522da23a3a5Eli Friedman Value *RHS = Visit(E->getRHS()); 12667f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner RHSBlock = Builder.GetInsertBlock(); 1267d57a871339c7c98d58d93108b806f59bdf4e13e2Daniel Dunbar CGF.EmitBranch(ContBlock); 12687f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 12697f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner CGF.EmitBlock(ContBlock); 12707f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 1271108f55d6fd9a1c0e753eb8e046cb1f1b81d77a76Nuno Lopes if (!LHS || !RHS) { 12722202bce80fc72d067cbe67dc1512f7b45351fd31Chris Lattner assert(E->getType()->isVoidType() && "Non-void value should have a value"); 12732202bce80fc72d067cbe67dc1512f7b45351fd31Chris Lattner return 0; 12742202bce80fc72d067cbe67dc1512f7b45351fd31Chris Lattner } 12752202bce80fc72d067cbe67dc1512f7b45351fd31Chris Lattner 12767f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Create a PHI node for the real part. 12777f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner llvm::PHINode *PN = Builder.CreatePHI(LHS->getType(), "cond"); 12787f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner PN->reserveOperandSpace(2); 12797f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner PN->addIncoming(LHS, LHSBlock); 12807f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner PN->addIncoming(RHS, RHSBlock); 12817f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return PN; 12827f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 12837f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 12847f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::VisitChooseExpr(ChooseExpr *E) { 12857976932a1c256d447316ffac58e9821417725e34Eli Friedman return Visit(E->getChosenSubExpr(CGF.getContext())); 12867f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 12877f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 12882202bce80fc72d067cbe67dc1512f7b45351fd31Chris LattnerValue *ScalarExprEmitter::VisitVAArgExpr(VAArgExpr *VE) { 12894fd0aa5803357d8c72eeac2cae15e12649ea08feEli Friedman llvm::Value *ArgValue = CGF.EmitVAListRef(VE->getSubExpr()); 1290ddf7cac45d85b73127adbbd91a2b28fc7291c57eAnders Carlsson llvm::Value *ArgPtr = CGF.EmitVAArg(ArgValue, VE->getType()); 1291ddf7cac45d85b73127adbbd91a2b28fc7291c57eAnders Carlsson 1292ddf7cac45d85b73127adbbd91a2b28fc7291c57eAnders Carlsson // If EmitVAArg fails, we fall back to the LLVM instruction. 1293ddf7cac45d85b73127adbbd91a2b28fc7291c57eAnders Carlsson if (!ArgPtr) 1294ddf7cac45d85b73127adbbd91a2b28fc7291c57eAnders Carlsson return Builder.CreateVAArg(ArgValue, ConvertType(VE->getType())); 1295ddf7cac45d85b73127adbbd91a2b28fc7291c57eAnders Carlsson 1296ddf7cac45d85b73127adbbd91a2b28fc7291c57eAnders Carlsson return Builder.CreateLoad(ArgPtr); 12977c50aca2fe36f6daa9bf1c8c428f30e72f96470aAnders Carlsson} 12987c50aca2fe36f6daa9bf1c8c428f30e72f96470aAnders Carlsson 1299df6b68c9487aed2042c7fc23db10a79f89083a11Mike StumpValue *ScalarExprEmitter::VisitBlockExpr(const BlockExpr *BE) { 13000892099dbc640720400a1d9decd2733a09d733e5Mike Stump return CGF.BuildBlockLiteralTmp(BE); 1301df6b68c9487aed2042c7fc23db10a79f89083a11Mike Stump} 1302df6b68c9487aed2042c7fc23db10a79f89083a11Mike Stump 13037f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner//===----------------------------------------------------------------------===// 13047f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner// Entry Point into this File 13057f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner//===----------------------------------------------------------------------===// 13067f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 13077f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner/// EmitComplexExpr - Emit the computation of the specified expression of 13087f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner/// complex type, ignoring the result. 13097f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *CodeGenFunction::EmitScalarExpr(const Expr *E) { 13107f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner assert(E && !hasAggregateLLVMType(E->getType()) && 13117f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner "Invalid scalar expression to emit"); 13127f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 13137f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return ScalarExprEmitter(*this).Visit(const_cast<Expr*>(E)); 13147f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 13153707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner 13163707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner/// EmitScalarConversion - Emit a conversion from the specified type to the 13173707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner/// specified destination type, both of which are LLVM scalar types. 13184f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris LattnerValue *CodeGenFunction::EmitScalarConversion(Value *Src, QualType SrcTy, 13194f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner QualType DstTy) { 13203707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner assert(!hasAggregateLLVMType(SrcTy) && !hasAggregateLLVMType(DstTy) && 13213707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner "Invalid scalar expression to emit"); 13223707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner return ScalarExprEmitter(*this).EmitScalarConversion(Src, SrcTy, DstTy); 13233707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner} 13244f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner 13254f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner/// EmitComplexToScalarConversion - Emit a conversion from the specified 13264f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner/// complex type to the specified destination type, where the destination 13274f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner/// type is an LLVM scalar type. 13284f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris LattnerValue *CodeGenFunction::EmitComplexToScalarConversion(ComplexPairTy Src, 13294f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner QualType SrcTy, 13304f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner QualType DstTy) { 13319b2dc287177394a8f73833e2ad4f7ca8cd6f22bbChris Lattner assert(SrcTy->isAnyComplexType() && !hasAggregateLLVMType(DstTy) && 13324f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner "Invalid complex -> scalar conversion"); 13334f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner return ScalarExprEmitter(*this).EmitComplexToScalarConversion(Src, SrcTy, 13344f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner DstTy); 13354f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner} 1336cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson 1337cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders CarlssonValue *CodeGenFunction::EmitShuffleVector(Value* V1, Value *V2, ...) { 1338cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson assert(V1->getType() == V2->getType() && 1339cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson "Vector operands must be of the same type"); 1340cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson unsigned NumElements = 1341cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson cast<llvm::VectorType>(V1->getType())->getNumElements(); 1342cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson 1343cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson va_list va; 1344cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson va_start(va, V2); 1345cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson 1346cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson llvm::SmallVector<llvm::Constant*, 16> Args; 1347cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson for (unsigned i = 0; i < NumElements; i++) { 1348cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson int n = va_arg(va, int); 1349cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson assert(n >= 0 && n < (int)NumElements * 2 && 1350cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson "Vector shuffle index out of bounds!"); 1351cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson Args.push_back(llvm::ConstantInt::get(llvm::Type::Int32Ty, n)); 1352cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson } 1353cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson 1354cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson const char *Name = va_arg(va, const char *); 1355cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson va_end(va); 1356cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson 1357cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson llvm::Constant *Mask = llvm::ConstantVector::get(&Args[0], NumElements); 1358cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson 1359cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson return Builder.CreateShuffleVector(V1, V2, Mask, Name); 1360cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson} 1361cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson 13626086bbd1799e22e75561c3d31dc9b923f0508fa5Anders Carlssonllvm::Value *CodeGenFunction::EmitVector(llvm::Value * const *Vals, 1363345f7209692b116ca433a3196c1e3c998e0ffcdeChris Lattner unsigned NumVals, bool isSplat) { 13646086bbd1799e22e75561c3d31dc9b923f0508fa5Anders Carlsson llvm::Value *Vec 1365345f7209692b116ca433a3196c1e3c998e0ffcdeChris Lattner = llvm::UndefValue::get(llvm::VectorType::get(Vals[0]->getType(), NumVals)); 13666086bbd1799e22e75561c3d31dc9b923f0508fa5Anders Carlsson 1367345f7209692b116ca433a3196c1e3c998e0ffcdeChris Lattner for (unsigned i = 0, e = NumVals; i != e; ++i) { 13684119d1aeca8016654d381ce079864058d1709571Nate Begeman llvm::Value *Val = isSplat ? Vals[0] : Vals[i]; 13696086bbd1799e22e75561c3d31dc9b923f0508fa5Anders Carlsson llvm::Value *Idx = llvm::ConstantInt::get(llvm::Type::Int32Ty, i); 13704119d1aeca8016654d381ce079864058d1709571Nate Begeman Vec = Builder.CreateInsertElement(Vec, Val, Idx, "tmp"); 13716086bbd1799e22e75561c3d31dc9b923f0508fa5Anders Carlsson } 13726086bbd1799e22e75561c3d31dc9b923f0508fa5Anders Carlsson 13736086bbd1799e22e75561c3d31dc9b923f0508fa5Anders Carlsson return Vec; 13746086bbd1799e22e75561c3d31dc9b923f0508fa5Anders Carlsson} 1375