CGExprScalar.cpp revision 8f39f5e96ce4a5f401f431f61db7df1cf05dce6f
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" 18de7fb8413b13651fd85b7125d08b3c9ac2816d9dDaniel Dunbar#include "clang/AST/StmtVisitor.h" 1925ddea7f7835c4b1804e458a5c866cde0097430aChris Lattner#include "clang/Basic/TargetInfo.h" 207f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner#include "llvm/Constants.h" 217f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner#include "llvm/Function.h" 2285f9bceab1542aafff012d4d28e998f4ba16e362Anders Carlsson#include "llvm/GlobalVariable.h" 237c50aca2fe36f6daa9bf1c8c428f30e72f96470aAnders Carlsson#include "llvm/Intrinsics.h" 247f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner#include "llvm/Support/Compiler.h" 25f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner#include "llvm/Support/CFG.h" 26c89bf69c9289d2b2305f2c267daacc7312391898Chris Lattner#include <cstdarg> 276aad91a43e26118c824d976661077819265d9bc0Ted Kremenek 287f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattnerusing namespace clang; 297f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattnerusing namespace CodeGen; 307f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattnerusing llvm::Value; 317f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 327f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner//===----------------------------------------------------------------------===// 337f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner// Scalar Expression Emitter 347f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner//===----------------------------------------------------------------------===// 357f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 367f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattnerstruct BinOpInfo { 377f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *LHS; 387f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *RHS; 391f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner QualType Ty; // Computation Type. 407f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner const BinaryOperator *E; 417f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner}; 427f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 437f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattnernamespace { 447f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattnerclass VISIBILITY_HIDDEN ScalarExprEmitter 457f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner : public StmtVisitor<ScalarExprEmitter, Value*> { 467f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner CodeGenFunction &CGF; 4745d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar CGBuilderTy &Builder; 482b94fe35edf951a14ecd32b21f7ebcc2e3754c67Chris Lattner 497f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattnerpublic: 507f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 512b94fe35edf951a14ecd32b21f7ebcc2e3754c67Chris Lattner ScalarExprEmitter(CodeGenFunction &cgf) : CGF(cgf), 52ed7c618f849e2541b1d0288c43154937652c5b15Daniel Dunbar Builder(CGF.Builder) { 537f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 547f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 557f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner //===--------------------------------------------------------------------===// 567f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Utilities 577f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner //===--------------------------------------------------------------------===// 587f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 597f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner const llvm::Type *ConvertType(QualType T) { return CGF.ConvertType(T); } 607f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner LValue EmitLValue(const Expr *E) { return CGF.EmitLValue(E); } 617f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 627f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *EmitLoadOfLValue(LValue LV, QualType T) { 639b65551d0b387a7597fb39356a4d8ef10046445eChris Lattner return CGF.EmitLoadOfLValue(LV, T).getScalarVal(); 647f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 657f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 667f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner /// EmitLoadOfLValue - Given an expression with complex type that represents a 677f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner /// value l-value, this method emits the address of the l-value, then loads 687f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner /// and returns the result. 697f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *EmitLoadOfLValue(const Expr *E) { 707f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // FIXME: Volatile 717f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return EmitLoadOfLValue(EmitLValue(E), E->getType()); 727f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 737f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 749abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner /// EmitConversionToBool - Convert the specified expression value to a 753420d0de2c52fedf771d7ef20522f6080233e377Chris Lattner /// boolean (i1) truth value. This is equivalent to "Val != 0". 769abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner Value *EmitConversionToBool(Value *Src, QualType DstTy); 779abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner 783707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner /// EmitScalarConversion - Emit a conversion from the specified type to the 793707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner /// specified destination type, both of which are LLVM scalar types. 804f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner Value *EmitScalarConversion(Value *Src, QualType SrcTy, QualType DstTy); 814f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner 824f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner /// EmitComplexToScalarConversion - Emit a conversion from the specified 834f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner /// complex type to the specified destination type, where the destination 844f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner /// type is an LLVM scalar type. 854f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner Value *EmitComplexToScalarConversion(CodeGenFunction::ComplexPairTy Src, 864f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner QualType SrcTy, QualType DstTy); 873707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner 887f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner //===--------------------------------------------------------------------===// 897f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Visitor Methods 907f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner //===--------------------------------------------------------------------===// 917f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 927f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitStmt(Stmt *S) { 937a9d49fd2bfac00e905b361ba76d26ab5b6c3b09Ted Kremenek S->dump(CGF.getContext().getSourceManager()); 947f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner assert(0 && "Stmt can't have complex result type!"); 957f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return 0; 967f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 977f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitExpr(Expr *S); 987f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitParenExpr(ParenExpr *PE) { return Visit(PE->getSubExpr()); } 997f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 1007f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Leaves. 1017f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitIntegerLiteral(const IntegerLiteral *E) { 1027f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return llvm::ConstantInt::get(E->getValue()); 1037f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 1047f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitFloatingLiteral(const FloatingLiteral *E) { 10559138ba7ce960888433546639deb45e2e03f8857Chris Lattner return llvm::ConstantFP::get(E->getValue()); 1067f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 1077f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitCharacterLiteral(const CharacterLiteral *E) { 1087f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return llvm::ConstantInt::get(ConvertType(E->getType()), E->getValue()); 109e7579b57eb3eabfd3545b86320fb67466730e9fcNate Begeman } 110e7579b57eb3eabfd3545b86320fb67466730e9fcNate Begeman Value *VisitCXXBoolLiteralExpr(const CXXBoolLiteralExpr *E) { 111e7579b57eb3eabfd3545b86320fb67466730e9fcNate Begeman return llvm::ConstantInt::get(ConvertType(E->getType()), E->getValue()); 1127f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 1137267f7832e5f0c7f951765e201c5a2650eb1637bArgyrios Kyrtzidis Value *VisitCXXZeroInitValueExpr(const CXXZeroInitValueExpr *E) { 1147267f7832e5f0c7f951765e201c5a2650eb1637bArgyrios Kyrtzidis return llvm::Constant::getNullValue(ConvertType(E->getType())); 1157267f7832e5f0c7f951765e201c5a2650eb1637bArgyrios Kyrtzidis } 1167f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitTypesCompatibleExpr(const TypesCompatibleExpr *E) { 1177f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return llvm::ConstantInt::get(ConvertType(E->getType()), 118ec0550fa3653d46560bf4484a2e988329c228e39Steve Naroff CGF.getContext().typesAreCompatible( 119ec0550fa3653d46560bf4484a2e988329c228e39Steve Naroff E->getArgType1(), E->getArgType2())); 1207f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 1210518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl Value *VisitSizeOfAlignOfExpr(const SizeOfAlignOfExpr *E); 1220ffb125996336fc7602b162c0a9e392f1a93060fDaniel Dunbar Value *VisitAddrLabelExpr(const AddrLabelExpr *E) { 12354d19091a809d30a5e6e352fda53377d69ebda66Daniel Dunbar llvm::Value *V = 12454d19091a809d30a5e6e352fda53377d69ebda66Daniel Dunbar llvm::ConstantInt::get(llvm::Type::Int32Ty, 12554d19091a809d30a5e6e352fda53377d69ebda66Daniel Dunbar CGF.GetIDForAddrOfLabel(E->getLabel())); 12654d19091a809d30a5e6e352fda53377d69ebda66Daniel Dunbar 12754d19091a809d30a5e6e352fda53377d69ebda66Daniel Dunbar return Builder.CreateIntToPtr(V, ConvertType(E->getType())); 1280ffb125996336fc7602b162c0a9e392f1a93060fDaniel Dunbar } 1297f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 1307f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // l-values. 1317f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitDeclRefExpr(DeclRefExpr *E) { 1327f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner if (const EnumConstantDecl *EC = dyn_cast<EnumConstantDecl>(E->getDecl())) 1337f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return llvm::ConstantInt::get(EC->getInitVal()); 1347f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return EmitLoadOfLValue(E); 1357f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 1369c3fc703b29a31d40bcf5027dbb4784dd393804eDaniel Dunbar Value *VisitObjCSelectorExpr(ObjCSelectorExpr *E) { 1379c3fc703b29a31d40bcf5027dbb4784dd393804eDaniel Dunbar return CGF.EmitObjCSelectorExpr(E); 1389c3fc703b29a31d40bcf5027dbb4784dd393804eDaniel Dunbar } 1399c3fc703b29a31d40bcf5027dbb4784dd393804eDaniel Dunbar Value *VisitObjCProtocolExpr(ObjCProtocolExpr *E) { 1409c3fc703b29a31d40bcf5027dbb4784dd393804eDaniel Dunbar return CGF.EmitObjCProtocolExpr(E); 1419c3fc703b29a31d40bcf5027dbb4784dd393804eDaniel Dunbar } 1429c3fc703b29a31d40bcf5027dbb4784dd393804eDaniel Dunbar Value *VisitObjCIvarRefExpr(ObjCIvarRefExpr *E) { 1439c3fc703b29a31d40bcf5027dbb4784dd393804eDaniel Dunbar return EmitLoadOfLValue(E); 1449c3fc703b29a31d40bcf5027dbb4784dd393804eDaniel Dunbar } 1450a04d77bde7e3a661c2b41b60630d125d09ed6efDaniel Dunbar Value *VisitObjCPropertyRefExpr(ObjCPropertyRefExpr *E) { 14685c59edda02df48fae8dc85049743319bc6e7e89Daniel Dunbar return EmitLoadOfLValue(E); 1479c3fc703b29a31d40bcf5027dbb4784dd393804eDaniel Dunbar } 14843f447098d5e6162fbfb97ed38365284207a7fbeFariborz Jahanian Value *VisitObjCKVCRefExpr(ObjCKVCRefExpr *E) { 14943f447098d5e6162fbfb97ed38365284207a7fbeFariborz Jahanian return EmitLoadOfLValue(E); 15043f447098d5e6162fbfb97ed38365284207a7fbeFariborz Jahanian } 1519c3fc703b29a31d40bcf5027dbb4784dd393804eDaniel Dunbar Value *VisitObjCMessageExpr(ObjCMessageExpr *E) { 1529c3fc703b29a31d40bcf5027dbb4784dd393804eDaniel Dunbar return CGF.EmitObjCMessageExpr(E).getScalarVal(); 1530a04d77bde7e3a661c2b41b60630d125d09ed6efDaniel Dunbar } 1540a04d77bde7e3a661c2b41b60630d125d09ed6efDaniel Dunbar 1557f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitArraySubscriptExpr(ArraySubscriptExpr *E); 156d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman Value *VisitShuffleVectorExpr(ShuffleVectorExpr *E); 1577f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitMemberExpr(Expr *E) { return EmitLoadOfLValue(E); } 158213541a68a3e137d11d2cefb612c6cdb410d7e8eNate Begeman Value *VisitExtVectorElementExpr(Expr *E) { return EmitLoadOfLValue(E); } 159be20bb558cae5352898e6a913e29d24d20134841Chris Lattner Value *VisitCompoundLiteralExpr(CompoundLiteralExpr *E) { 160be20bb558cae5352898e6a913e29d24d20134841Chris Lattner return EmitLoadOfLValue(E); 161be20bb558cae5352898e6a913e29d24d20134841Chris Lattner } 1627f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitStringLiteral(Expr *E) { return EmitLValue(E).getAddress(); } 163d9f6910f4ef37c0e8eeee2a01287d9572c3176efChris Lattner Value *VisitPredefinedExpr(Expr *E) { return EmitLValue(E).getAddress(); } 16435634f5ed67966c9f1fde38420e79cc6515cd673Devang Patel 16535634f5ed67966c9f1fde38420e79cc6515cd673Devang Patel Value *VisitInitListExpr(InitListExpr *E) { 1667019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson unsigned NumInitElements = E->getNumInits(); 1677019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson 1687019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson const llvm::VectorType *VType = 169f6884ac7cfc4c5562c0678ad65b3460a38f56e23Anders Carlsson dyn_cast<llvm::VectorType>(ConvertType(E->getType())); 170f6884ac7cfc4c5562c0678ad65b3460a38f56e23Anders Carlsson 171f6884ac7cfc4c5562c0678ad65b3460a38f56e23Anders Carlsson // We have a scalar in braces. Just use the first element. 172f6884ac7cfc4c5562c0678ad65b3460a38f56e23Anders Carlsson if (!VType) 173f6884ac7cfc4c5562c0678ad65b3460a38f56e23Anders Carlsson return Visit(E->getInit(0)); 1747019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson 175be20bb558cae5352898e6a913e29d24d20134841Chris Lattner if (E->hadDesignators()) { 176be20bb558cae5352898e6a913e29d24d20134841Chris Lattner CGF.ErrorUnsupported(E, "initializer list with designators"); 177be20bb558cae5352898e6a913e29d24d20134841Chris Lattner return llvm::UndefValue::get(CGF.ConvertType(E->getType())); 178be20bb558cae5352898e6a913e29d24d20134841Chris Lattner } 179be20bb558cae5352898e6a913e29d24d20134841Chris Lattner 1807019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson unsigned NumVectorElements = VType->getNumElements(); 1817019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson const llvm::Type *ElementType = VType->getElementType(); 1827019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson 1837019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson // Emit individual vector element stores. 1847019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson llvm::Value *V = llvm::UndefValue::get(VType); 1857019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson 186222d2c8b7886e37ba22f0b25ac7a6552f7cc8492Anders Carlsson // Emit initializers 187222d2c8b7886e37ba22f0b25ac7a6552f7cc8492Anders Carlsson unsigned i; 188222d2c8b7886e37ba22f0b25ac7a6552f7cc8492Anders Carlsson for (i = 0; i < NumInitElements; ++i) { 189a83cc33195c7d1fa31d6809416eaa4c3ebf036ebDevang Patel Value *NewV = Visit(E->getInit(i)); 190a83cc33195c7d1fa31d6809416eaa4c3ebf036ebDevang Patel Value *Idx = llvm::ConstantInt::get(llvm::Type::Int32Ty, i); 191a83cc33195c7d1fa31d6809416eaa4c3ebf036ebDevang Patel V = Builder.CreateInsertElement(V, NewV, Idx); 19235634f5ed67966c9f1fde38420e79cc6515cd673Devang Patel } 1937019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson 1947019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson // Emit remaining default initializers 1957019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson for (/* Do not initialize i*/; i < NumVectorElements; ++i) { 1967019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson Value *Idx = llvm::ConstantInt::get(llvm::Type::Int32Ty, i); 1977019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson llvm::Value *NewV = llvm::Constant::getNullValue(ElementType); 1987019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson V = Builder.CreateInsertElement(V, NewV, Idx); 1997019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson } 2007019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson 201a83cc33195c7d1fa31d6809416eaa4c3ebf036ebDevang Patel return V; 20235634f5ed67966c9f1fde38420e79cc6515cd673Devang Patel } 20304421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner 2047f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitImplicitCastExpr(const ImplicitCastExpr *E); 2057f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitCastExpr(const CastExpr *E) { 2067f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return EmitCastExpr(E->getSubExpr(), E->getType()); 2077f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 2087f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *EmitCastExpr(const Expr *E, QualType T); 2097f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 2107f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitCallExpr(const CallExpr *E) { 2119b65551d0b387a7597fb39356a4d8ef10046445eChris Lattner return CGF.EmitCallExpr(E).getScalarVal(); 2127f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 2138f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar 2143379320c10001d7e1ee5d7e7142c417f797cfe82Chris Lattner Value *VisitStmtExpr(const StmtExpr *E); 2153379320c10001d7e1ee5d7e7142c417f797cfe82Chris Lattner 2167f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Unary Operators. 2177f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitPrePostIncDec(const UnaryOperator *E, bool isInc, bool isPre); 2187f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitUnaryPostDec(const UnaryOperator *E) { 2197f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return VisitPrePostIncDec(E, false, false); 2207f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 2217f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitUnaryPostInc(const UnaryOperator *E) { 2227f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return VisitPrePostIncDec(E, true, false); 2237f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 2247f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitUnaryPreDec(const UnaryOperator *E) { 2257f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return VisitPrePostIncDec(E, false, true); 2267f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 2277f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitUnaryPreInc(const UnaryOperator *E) { 2287f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return VisitPrePostIncDec(E, true, true); 2297f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 2307f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitUnaryAddrOf(const UnaryOperator *E) { 2317f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return EmitLValue(E->getSubExpr()).getAddress(); 2327f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 2337f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitUnaryDeref(const Expr *E) { return EmitLoadOfLValue(E); } 2347f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitUnaryPlus(const UnaryOperator *E) { 2357f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Visit(E->getSubExpr()); 2367f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 2377f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitUnaryMinus (const UnaryOperator *E); 2387f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitUnaryNot (const UnaryOperator *E); 2397f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitUnaryLNot (const UnaryOperator *E); 24046f93d021a1778442c1c4a53f0b94a68bfae3be5Chris Lattner Value *VisitUnaryReal (const UnaryOperator *E); 24146f93d021a1778442c1c4a53f0b94a68bfae3be5Chris Lattner Value *VisitUnaryImag (const UnaryOperator *E); 2427f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitUnaryExtension(const UnaryOperator *E) { 2437f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Visit(E->getSubExpr()); 2447f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 2455a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson Value *VisitUnaryOffsetOf(const UnaryOperator *E); 24604421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner Value *VisitCXXDefaultArgExpr(CXXDefaultArgExpr *DAE) { 24704421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner return Visit(DAE->getExpr()); 24804421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner } 2495a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson 2507f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Binary Operators. 2517f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *EmitMul(const BinOpInfo &Ops) { 2527f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateMul(Ops.LHS, Ops.RHS, "mul"); 2537f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 2547f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *EmitDiv(const BinOpInfo &Ops); 2557f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *EmitRem(const BinOpInfo &Ops); 2567f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *EmitAdd(const BinOpInfo &Ops); 2577f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *EmitSub(const BinOpInfo &Ops); 2587f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *EmitShl(const BinOpInfo &Ops); 2597f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *EmitShr(const BinOpInfo &Ops); 2607f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *EmitAnd(const BinOpInfo &Ops) { 2617f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateAnd(Ops.LHS, Ops.RHS, "and"); 2627f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 2637f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *EmitXor(const BinOpInfo &Ops) { 2647f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateXor(Ops.LHS, Ops.RHS, "xor"); 2657f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 2667f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *EmitOr (const BinOpInfo &Ops) { 2677f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateOr(Ops.LHS, Ops.RHS, "or"); 2687f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 2697f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 2701f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner BinOpInfo EmitBinOps(const BinaryOperator *E); 2713ccf774256382ef9aa95028eaad82f54a3d0b0adChris Lattner Value *EmitCompoundAssign(const CompoundAssignOperator *E, 2721f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner Value *(ScalarExprEmitter::*F)(const BinOpInfo &)); 2731f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner 2741f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner // Binary operators and binary compound assignment operators. 2751f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner#define HANDLEBINOP(OP) \ 2763ccf774256382ef9aa95028eaad82f54a3d0b0adChris Lattner Value *VisitBin ## OP(const BinaryOperator *E) { \ 2773ccf774256382ef9aa95028eaad82f54a3d0b0adChris Lattner return Emit ## OP(EmitBinOps(E)); \ 2783ccf774256382ef9aa95028eaad82f54a3d0b0adChris Lattner } \ 2793ccf774256382ef9aa95028eaad82f54a3d0b0adChris Lattner Value *VisitBin ## OP ## Assign(const CompoundAssignOperator *E) { \ 2803ccf774256382ef9aa95028eaad82f54a3d0b0adChris Lattner return EmitCompoundAssign(E, &ScalarExprEmitter::Emit ## OP); \ 2811f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner } 2821f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner HANDLEBINOP(Mul); 2831f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner HANDLEBINOP(Div); 2841f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner HANDLEBINOP(Rem); 2851f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner HANDLEBINOP(Add); 2868c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar HANDLEBINOP(Sub); 2871f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner HANDLEBINOP(Shl); 2881f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner HANDLEBINOP(Shr); 2891f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner HANDLEBINOP(And); 2901f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner HANDLEBINOP(Xor); 2911f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner HANDLEBINOP(Or); 2921f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner#undef HANDLEBINOP 2938c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar 2947f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Comparisons. 2957f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *EmitCompare(const BinaryOperator *E, unsigned UICmpOpc, 2967f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner unsigned SICmpOpc, unsigned FCmpOpc); 2977f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner#define VISITCOMP(CODE, UI, SI, FP) \ 2987f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitBin##CODE(const BinaryOperator *E) { \ 2997f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return EmitCompare(E, llvm::ICmpInst::UI, llvm::ICmpInst::SI, \ 3007f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner llvm::FCmpInst::FP); } 3017f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner VISITCOMP(LT, ICMP_ULT, ICMP_SLT, FCMP_OLT); 3027f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner VISITCOMP(GT, ICMP_UGT, ICMP_SGT, FCMP_OGT); 3037f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner VISITCOMP(LE, ICMP_ULE, ICMP_SLE, FCMP_OLE); 3047f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner VISITCOMP(GE, ICMP_UGE, ICMP_SGE, FCMP_OGE); 3057f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner VISITCOMP(EQ, ICMP_EQ , ICMP_EQ , FCMP_OEQ); 3067f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner VISITCOMP(NE, ICMP_NE , ICMP_NE , FCMP_UNE); 3077f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner#undef VISITCOMP 3087f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 3097f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitBinAssign (const BinaryOperator *E); 3107f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 3117f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitBinLAnd (const BinaryOperator *E); 3127f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitBinLOr (const BinaryOperator *E); 3137f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitBinComma (const BinaryOperator *E); 3147f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 3157f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Other Operators. 3167f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitConditionalOperator(const ConditionalOperator *CO); 3177f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitChooseExpr(ChooseExpr *CE); 318e2ce1d9440186cf3332368291cd884a6e3ae8946Nate Begeman Value *VisitOverloadExpr(OverloadExpr *OE); 3197c50aca2fe36f6daa9bf1c8c428f30e72f96470aAnders Carlsson Value *VisitVAArgExpr(VAArgExpr *VE); 3207f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitObjCStringLiteral(const ObjCStringLiteral *E) { 3217f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return CGF.EmitObjCStringLiteral(E); 3227f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 32385f9bceab1542aafff012d4d28e998f4ba16e362Anders Carlsson Value *VisitObjCEncodeExpr(const ObjCEncodeExpr *E); 3247f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner}; 3257f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} // end anonymous namespace. 3267f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 3277f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner//===----------------------------------------------------------------------===// 3287f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner// Utilities 3297f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner//===----------------------------------------------------------------------===// 3307f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 3319abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner/// EmitConversionToBool - Convert the specified expression value to a 3323420d0de2c52fedf771d7ef20522f6080233e377Chris Lattner/// boolean (i1) truth value. This is equivalent to "Val != 0". 3339abc84e7ac4db891209fe67cc3a8c9690dc886efChris LattnerValue *ScalarExprEmitter::EmitConversionToBool(Value *Src, QualType SrcType) { 3349abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner assert(SrcType->isCanonical() && "EmitScalarConversion strips typedefs"); 3359abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner 3369abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner if (SrcType->isRealFloatingType()) { 3379abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner // Compare against 0.0 for fp scalars. 3389abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner llvm::Value *Zero = llvm::Constant::getNullValue(Src->getType()); 3399abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner return Builder.CreateFCmpUNE(Src, Zero, "tobool"); 3409abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner } 3419abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner 342d1d66bcd6914ff82abdfa88dd25bb0b74cde3b99Daniel Dunbar assert((SrcType->isIntegerType() || isa<llvm::PointerType>(Src->getType())) && 3439abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner "Unknown scalar type to convert"); 3449abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner 3459abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner // Because of the type rules of C, we often end up computing a logical value, 3469abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner // then zero extending it to int, then wanting it as a logical value again. 3479abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner // Optimize this common case. 3489abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner if (llvm::ZExtInst *ZI = dyn_cast<llvm::ZExtInst>(Src)) { 3499abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner if (ZI->getOperand(0)->getType() == llvm::Type::Int1Ty) { 3509abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner Value *Result = ZI->getOperand(0); 351356916ec84826a793b0353e5db0e9a7589b9ec5cEli Friedman // If there aren't any more uses, zap the instruction to save space. 352356916ec84826a793b0353e5db0e9a7589b9ec5cEli Friedman // Note that there can be more uses, for example if this 353356916ec84826a793b0353e5db0e9a7589b9ec5cEli Friedman // is the result of an assignment. 354356916ec84826a793b0353e5db0e9a7589b9ec5cEli Friedman if (ZI->use_empty()) 355356916ec84826a793b0353e5db0e9a7589b9ec5cEli Friedman ZI->eraseFromParent(); 3569abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner return Result; 3579abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner } 3589abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner } 3599abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner 3609abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner // Compare against an integer or pointer null. 3619abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner llvm::Value *Zero = llvm::Constant::getNullValue(Src->getType()); 3629abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner return Builder.CreateICmpNE(Src, Zero, "tobool"); 3639abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner} 3649abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner 3653707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner/// EmitScalarConversion - Emit a conversion from the specified type to the 3663707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner/// specified destination type, both of which are LLVM scalar types. 3674f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris LattnerValue *ScalarExprEmitter::EmitScalarConversion(Value *Src, QualType SrcType, 3684f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner QualType DstType) { 3699619662a1d42e2008b865d3459c0677e149dad1bChris Lattner SrcType = CGF.getContext().getCanonicalType(SrcType); 3709619662a1d42e2008b865d3459c0677e149dad1bChris Lattner DstType = CGF.getContext().getCanonicalType(DstType); 3713707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner if (SrcType == DstType) return Src; 372cf289083ab007264fa3ea96d92f133339aee5d2dChris Lattner 373cf289083ab007264fa3ea96d92f133339aee5d2dChris Lattner if (DstType->isVoidType()) return 0; 3743707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner 3753707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner // Handle conversions to bool first, they are special: comparisons against 0. 376ed70f0a53610e5e4d4a62cfc0be48d8c1539b5ffChris Lattner if (DstType->isBooleanType()) 377ed70f0a53610e5e4d4a62cfc0be48d8c1539b5ffChris Lattner return EmitConversionToBool(Src, SrcType); 3783707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner 3793707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner const llvm::Type *DstTy = ConvertType(DstType); 3803707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner 3813707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner // Ignore conversions like int -> uint. 3823707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner if (Src->getType() == DstTy) 3833707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner return Src; 3843707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner 385270cc66683b22d6bb0b4644f5a40f84d45edf119Daniel Dunbar // Handle pointer conversions next: pointers can only be converted 386270cc66683b22d6bb0b4644f5a40f84d45edf119Daniel Dunbar // to/from other pointers and integers. Check for pointer types in 387270cc66683b22d6bb0b4644f5a40f84d45edf119Daniel Dunbar // terms of LLVM, as some native types (like Obj-C id) may map to a 388270cc66683b22d6bb0b4644f5a40f84d45edf119Daniel Dunbar // pointer type. 389270cc66683b22d6bb0b4644f5a40f84d45edf119Daniel Dunbar if (isa<llvm::PointerType>(DstTy)) { 3903707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner // The source value may be an integer, or a pointer. 3913707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner if (isa<llvm::PointerType>(Src->getType())) 3923707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner return Builder.CreateBitCast(Src, DstTy, "conv"); 3933707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner assert(SrcType->isIntegerType() && "Not ptr->ptr or int->ptr conversion?"); 3943707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner return Builder.CreateIntToPtr(Src, DstTy, "conv"); 3953707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner } 3963707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner 397270cc66683b22d6bb0b4644f5a40f84d45edf119Daniel Dunbar if (isa<llvm::PointerType>(Src->getType())) { 3983707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner // Must be an ptr to int cast. 3993707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner assert(isa<llvm::IntegerType>(DstTy) && "not ptr->int?"); 40050b5a30db40322880340e957ad7d6d8d60bb4c5bAnders Carlsson return Builder.CreatePtrToInt(Src, DstTy, "conv"); 4013707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner } 4023707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner 403213541a68a3e137d11d2cefb612c6cdb410d7e8eNate Begeman // A scalar can be splatted to an extended vector of the same element type 404213541a68a3e137d11d2cefb612c6cdb410d7e8eNate Begeman if (DstType->isExtVectorType() && !isa<VectorType>(SrcType) && 4053b1ae004d0ee88fc029dad876ec5695f178ef3f6Chris Lattner cast<llvm::VectorType>(DstTy)->getElementType() == Src->getType()) 4064119d1aeca8016654d381ce079864058d1709571Nate Begeman return CGF.EmitVector(&Src, DstType->getAsVectorType()->getNumElements(), 4074119d1aeca8016654d381ce079864058d1709571Nate Begeman true); 4084119d1aeca8016654d381ce079864058d1709571Nate Begeman 4093b1ae004d0ee88fc029dad876ec5695f178ef3f6Chris Lattner // Allow bitcast from vector to integer/fp of the same size. 4107019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson if (isa<llvm::VectorType>(Src->getType()) || 4113b1ae004d0ee88fc029dad876ec5695f178ef3f6Chris Lattner isa<llvm::VectorType>(DstTy)) 4127019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson return Builder.CreateBitCast(Src, DstTy, "conv"); 4137019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson 4143707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner // Finally, we have the arithmetic types: real int/float. 4153707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner if (isa<llvm::IntegerType>(Src->getType())) { 4163707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner bool InputSigned = SrcType->isSignedIntegerType(); 417b5ce097bb741733e24efd7803f29849be227f8ceAnders Carlsson if (isa<llvm::IntegerType>(DstTy)) 418b5ce097bb741733e24efd7803f29849be227f8ceAnders Carlsson return Builder.CreateIntCast(Src, DstTy, InputSigned, "conv"); 419b5ce097bb741733e24efd7803f29849be227f8ceAnders Carlsson else if (InputSigned) 420b5ce097bb741733e24efd7803f29849be227f8ceAnders Carlsson return Builder.CreateSIToFP(Src, DstTy, "conv"); 421b5ce097bb741733e24efd7803f29849be227f8ceAnders Carlsson else 422b5ce097bb741733e24efd7803f29849be227f8ceAnders Carlsson return Builder.CreateUIToFP(Src, DstTy, "conv"); 4233707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner } 4243707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner 4253707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner assert(Src->getType()->isFloatingPoint() && "Unknown real conversion"); 4263707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner if (isa<llvm::IntegerType>(DstTy)) { 427b5ce097bb741733e24efd7803f29849be227f8ceAnders Carlsson if (DstType->isSignedIntegerType()) 428b5ce097bb741733e24efd7803f29849be227f8ceAnders Carlsson return Builder.CreateFPToSI(Src, DstTy, "conv"); 429b5ce097bb741733e24efd7803f29849be227f8ceAnders Carlsson else 430b5ce097bb741733e24efd7803f29849be227f8ceAnders Carlsson return Builder.CreateFPToUI(Src, DstTy, "conv"); 4313707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner } 4323707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner 4333707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner assert(DstTy->isFloatingPoint() && "Unknown real conversion"); 434b5ce097bb741733e24efd7803f29849be227f8ceAnders Carlsson if (DstTy->getTypeID() < Src->getType()->getTypeID()) 435b5ce097bb741733e24efd7803f29849be227f8ceAnders Carlsson return Builder.CreateFPTrunc(Src, DstTy, "conv"); 436b5ce097bb741733e24efd7803f29849be227f8ceAnders Carlsson else 437b5ce097bb741733e24efd7803f29849be227f8ceAnders Carlsson return Builder.CreateFPExt(Src, DstTy, "conv"); 4383707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner} 4393707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner 4404f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner/// EmitComplexToScalarConversion - Emit a conversion from the specified 4414f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner/// complex type to the specified destination type, where the destination 4424f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner/// type is an LLVM scalar type. 4434f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris LattnerValue *ScalarExprEmitter:: 4444f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris LattnerEmitComplexToScalarConversion(CodeGenFunction::ComplexPairTy Src, 4454f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner QualType SrcTy, QualType DstTy) { 446ed70f0a53610e5e4d4a62cfc0be48d8c1539b5ffChris Lattner // Get the source element type. 4479619662a1d42e2008b865d3459c0677e149dad1bChris Lattner SrcTy = SrcTy->getAsComplexType()->getElementType(); 448ed70f0a53610e5e4d4a62cfc0be48d8c1539b5ffChris Lattner 449ed70f0a53610e5e4d4a62cfc0be48d8c1539b5ffChris Lattner // Handle conversions to bool first, they are special: comparisons against 0. 450ed70f0a53610e5e4d4a62cfc0be48d8c1539b5ffChris Lattner if (DstTy->isBooleanType()) { 451ed70f0a53610e5e4d4a62cfc0be48d8c1539b5ffChris Lattner // Complex != 0 -> (Real != 0) | (Imag != 0) 452ed70f0a53610e5e4d4a62cfc0be48d8c1539b5ffChris Lattner Src.first = EmitScalarConversion(Src.first, SrcTy, DstTy); 453ed70f0a53610e5e4d4a62cfc0be48d8c1539b5ffChris Lattner Src.second = EmitScalarConversion(Src.second, SrcTy, DstTy); 454ed70f0a53610e5e4d4a62cfc0be48d8c1539b5ffChris Lattner return Builder.CreateOr(Src.first, Src.second, "tobool"); 455ed70f0a53610e5e4d4a62cfc0be48d8c1539b5ffChris Lattner } 456ed70f0a53610e5e4d4a62cfc0be48d8c1539b5ffChris Lattner 4574f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner // C99 6.3.1.7p2: "When a value of complex type is converted to a real type, 4584f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner // the imaginary part of the complex value is discarded and the value of the 4594f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner // real part is converted according to the conversion rules for the 4604f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner // corresponding real type. 4614f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner return EmitScalarConversion(Src.first, SrcTy, DstTy); 4624f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner} 4634f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner 4644f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner 4657f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner//===----------------------------------------------------------------------===// 4667f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner// Visitor Methods 4677f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner//===----------------------------------------------------------------------===// 4687f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 4697f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::VisitExpr(Expr *E) { 470488e993a135ce700b982bf099c3d6b856301d642Daniel Dunbar CGF.ErrorUnsupported(E, "scalar expression"); 4717f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner if (E->getType()->isVoidType()) 4727f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return 0; 4737f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return llvm::UndefValue::get(CGF.ConvertType(E->getType())); 4747f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 4757f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 476d38617c8a50f9729c254ab76cd359af797c6739bEli FriedmanValue *ScalarExprEmitter::VisitShuffleVectorExpr(ShuffleVectorExpr *E) { 477d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman llvm::SmallVector<llvm::Constant*, 32> indices; 478d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman for (unsigned i = 2; i < E->getNumSubExprs(); i++) { 479d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman indices.push_back(cast<llvm::Constant>(CGF.EmitScalarExpr(E->getExpr(i)))); 480d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman } 481d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman Value* V1 = CGF.EmitScalarExpr(E->getExpr(0)); 482d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman Value* V2 = CGF.EmitScalarExpr(E->getExpr(1)); 483d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman Value* SV = llvm::ConstantVector::get(indices.begin(), indices.size()); 484d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman return Builder.CreateShuffleVector(V1, V2, SV, "shuffle"); 485d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman} 486d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman 4877f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::VisitArraySubscriptExpr(ArraySubscriptExpr *E) { 4887f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Emit subscript expressions in rvalue context's. For most cases, this just 4897f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // loads the lvalue formed by the subscript expr. However, we have to be 4907f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // careful, because the base of a vector subscript is occasionally an rvalue, 4917f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // so we can't get it as an lvalue. 4927f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner if (!E->getBase()->getType()->isVectorType()) 4937f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return EmitLoadOfLValue(E); 4947f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 4957f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Handle the vector case. The base must be a vector, the index must be an 4967f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // integer value. 4977f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *Base = Visit(E->getBase()); 4987f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *Idx = Visit(E->getIdx()); 4997f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 5007f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // FIXME: Convert Idx to i32 type. 5017f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateExtractElement(Base, Idx, "vecext"); 5027f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 5037f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 5047f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner/// VisitImplicitCastExpr - Implicit casts are the same as normal casts, but 5057f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner/// also handle things like function to pointer-to-function decay, and array to 5067f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner/// pointer decay. 5077f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::VisitImplicitCastExpr(const ImplicitCastExpr *E) { 5087f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner const Expr *Op = E->getSubExpr(); 5097f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 5107f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // If this is due to array->pointer conversion, emit the array expression as 5117f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // an l-value. 5127f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner if (Op->getType()->isArrayType()) { 5137f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // FIXME: For now we assume that all source arrays map to LLVM arrays. This 5147f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // will not true when we add support for VLAs. 5154f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner Value *V = EmitLValue(Op).getAddress(); // Bitfields can't be arrays. 5168f39f5e96ce4a5f401f431f61db7df1cf05dce6fEli Friedman 5178f39f5e96ce4a5f401f431f61db7df1cf05dce6fEli Friedman if (!Op->getType()->isVariableArrayType()) { 5188f39f5e96ce4a5f401f431f61db7df1cf05dce6fEli Friedman assert(isa<llvm::PointerType>(V->getType()) && "Expected pointer"); 5198f39f5e96ce4a5f401f431f61db7df1cf05dce6fEli Friedman assert(isa<llvm::ArrayType>(cast<llvm::PointerType>(V->getType()) 5208f39f5e96ce4a5f401f431f61db7df1cf05dce6fEli Friedman ->getElementType()) && 5218f39f5e96ce4a5f401f431f61db7df1cf05dce6fEli Friedman "Expected pointer to array"); 5228f39f5e96ce4a5f401f431f61db7df1cf05dce6fEli Friedman V = Builder.CreateStructGEP(V, 0, "arraydecay"); 523662174c82ef46b19a2329c7d37208e1d12dfb7b3Daniel Dunbar } 524a9e6372208ad77eb2cae639a8a17c86551ac1937Chris Lattner 525a9e6372208ad77eb2cae639a8a17c86551ac1937Chris Lattner // The resultant pointer type can be implicitly casted to other pointer 526f31627f676374812d0355d7e34fd2e940b400757Chris Lattner // types as well (e.g. void*) and can be implicitly converted to integer. 527f31627f676374812d0355d7e34fd2e940b400757Chris Lattner const llvm::Type *DestTy = ConvertType(E->getType()); 528f31627f676374812d0355d7e34fd2e940b400757Chris Lattner if (V->getType() != DestTy) { 529f31627f676374812d0355d7e34fd2e940b400757Chris Lattner if (isa<llvm::PointerType>(DestTy)) 530f31627f676374812d0355d7e34fd2e940b400757Chris Lattner V = Builder.CreateBitCast(V, DestTy, "ptrconv"); 531f31627f676374812d0355d7e34fd2e940b400757Chris Lattner else { 532f31627f676374812d0355d7e34fd2e940b400757Chris Lattner assert(isa<llvm::IntegerType>(DestTy) && "Unknown array decay"); 533f31627f676374812d0355d7e34fd2e940b400757Chris Lattner V = Builder.CreatePtrToInt(V, DestTy, "ptrconv"); 534f31627f676374812d0355d7e34fd2e940b400757Chris Lattner } 535f31627f676374812d0355d7e34fd2e940b400757Chris Lattner } 536a9e6372208ad77eb2cae639a8a17c86551ac1937Chris Lattner return V; 537a9e6372208ad77eb2cae639a8a17c86551ac1937Chris Lattner 538793680ed8104bf088d1b382b963a8badcb3f07deAnders Carlsson } else if (E->getType()->isReferenceType()) { 539793680ed8104bf088d1b382b963a8badcb3f07deAnders Carlsson return EmitLValue(Op).getAddress(); 5407f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 5417f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 5427f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return EmitCastExpr(Op, E->getType()); 5437f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 5447f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 5457f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 5467f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner// VisitCastExpr - Emit code for an explicit or implicit cast. Implicit casts 5477f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner// have to handle a more broad range of conversions than explicit casts, as they 5487f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner// handle things like function to ptr-to-function decay etc. 5497f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::EmitCastExpr(const Expr *E, QualType DestTy) { 55058a2e944faa16f1f61439acd2e71b19f50189511Chris Lattner // Handle cases where the source is an non-complex type. 55119a1d7c646729eb858b15583e647262a22de3637Chris Lattner 55219a1d7c646729eb858b15583e647262a22de3637Chris Lattner if (!CGF.hasAggregateLLVMType(E->getType())) { 5533707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner Value *Src = Visit(const_cast<Expr*>(E)); 5543707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner 5553707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner // Use EmitScalarConversion to perform the conversion. 5563707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner return EmitScalarConversion(Src, E->getType(), DestTy); 5573707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner } 55819a1d7c646729eb858b15583e647262a22de3637Chris Lattner 5599b2dc287177394a8f73833e2ad4f7ca8cd6f22bbChris Lattner if (E->getType()->isAnyComplexType()) { 56019a1d7c646729eb858b15583e647262a22de3637Chris Lattner // Handle cases where the source is a complex type. 56119a1d7c646729eb858b15583e647262a22de3637Chris Lattner return EmitComplexToScalarConversion(CGF.EmitComplexExpr(E), E->getType(), 56219a1d7c646729eb858b15583e647262a22de3637Chris Lattner DestTy); 56319a1d7c646729eb858b15583e647262a22de3637Chris Lattner } 56410b00cfe6422906b223724048b9b2123968d3baaChris Lattner 56519a1d7c646729eb858b15583e647262a22de3637Chris Lattner // Okay, this is a cast from an aggregate. It must be a cast to void. Just 56619a1d7c646729eb858b15583e647262a22de3637Chris Lattner // evaluate the result and return. 56719a1d7c646729eb858b15583e647262a22de3637Chris Lattner CGF.EmitAggExpr(E, 0, false); 56819a1d7c646729eb858b15583e647262a22de3637Chris Lattner return 0; 5697f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 5707f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 5713379320c10001d7e1ee5d7e7142c417f797cfe82Chris LattnerValue *ScalarExprEmitter::VisitStmtExpr(const StmtExpr *E) { 57291d723da7b68be5245c3ac58aa2a36d04658cfb8Chris Lattner return CGF.EmitCompoundStmt(*E->getSubStmt(), 57391d723da7b68be5245c3ac58aa2a36d04658cfb8Chris Lattner !E->getType()->isVoidType()).getScalarVal(); 5743379320c10001d7e1ee5d7e7142c417f797cfe82Chris Lattner} 5753379320c10001d7e1ee5d7e7142c417f797cfe82Chris Lattner 5763379320c10001d7e1ee5d7e7142c417f797cfe82Chris Lattner 5777f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner//===----------------------------------------------------------------------===// 5787f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner// Unary Operators 5797f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner//===----------------------------------------------------------------------===// 5807f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 5817f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::VisitPrePostIncDec(const UnaryOperator *E, 582dfce2a51a78455c915722bc05f07c41e600220c9Chris Lattner bool isInc, bool isPre) { 5837f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner LValue LV = EmitLValue(E->getSubExpr()); 5847f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // FIXME: Handle volatile! 585e936cc8890b94e83f530453c8c9167fb5de9b5faChris Lattner Value *InVal = CGF.EmitLoadOfLValue(LV, // false 5869b65551d0b387a7597fb39356a4d8ef10046445eChris Lattner E->getSubExpr()->getType()).getScalarVal(); 5877f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 5887f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner int AmountVal = isInc ? 1 : -1; 5897f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 5907f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *NextVal; 591e936cc8890b94e83f530453c8c9167fb5de9b5faChris Lattner if (isa<llvm::PointerType>(InVal->getType())) { 592e936cc8890b94e83f530453c8c9167fb5de9b5faChris Lattner // FIXME: This isn't right for VLAs. 593e936cc8890b94e83f530453c8c9167fb5de9b5faChris Lattner NextVal = llvm::ConstantInt::get(llvm::Type::Int32Ty, AmountVal); 59436b6a0a63e87803a85080c639ad8b61e8bb5f9eeChris Lattner NextVal = Builder.CreateGEP(InVal, NextVal, "ptrincdec"); 595e936cc8890b94e83f530453c8c9167fb5de9b5faChris Lattner } else { 596e936cc8890b94e83f530453c8c9167fb5de9b5faChris Lattner // Add the inc/dec to the real part. 597e936cc8890b94e83f530453c8c9167fb5de9b5faChris Lattner if (isa<llvm::IntegerType>(InVal->getType())) 598e936cc8890b94e83f530453c8c9167fb5de9b5faChris Lattner NextVal = llvm::ConstantInt::get(InVal->getType(), AmountVal); 599ca2617c0e1f87c9da4d9aa3db4ea854ee2f6a1daChris Lattner else if (InVal->getType() == llvm::Type::FloatTy) 600e9b8c0a38549692f1b8f688c05c35442fc620865Devang Patel NextVal = 60159138ba7ce960888433546639deb45e2e03f8857Chris Lattner llvm::ConstantFP::get(llvm::APFloat(static_cast<float>(AmountVal))); 60225ddea7f7835c4b1804e458a5c866cde0097430aChris Lattner else if (InVal->getType() == llvm::Type::DoubleTy) 603e9b8c0a38549692f1b8f688c05c35442fc620865Devang Patel NextVal = 60459138ba7ce960888433546639deb45e2e03f8857Chris Lattner llvm::ConstantFP::get(llvm::APFloat(static_cast<double>(AmountVal))); 60525ddea7f7835c4b1804e458a5c866cde0097430aChris Lattner else { 60625ddea7f7835c4b1804e458a5c866cde0097430aChris Lattner llvm::APFloat F(static_cast<float>(AmountVal)); 607ee5a700af3fe9ae1a639c271f093f40677dddc04Dale Johannesen bool ignored; 608ee5a700af3fe9ae1a639c271f093f40677dddc04Dale Johannesen F.convert(CGF.Target.getLongDoubleFormat(), llvm::APFloat::rmTowardZero, 609ee5a700af3fe9ae1a639c271f093f40677dddc04Dale Johannesen &ignored); 61025ddea7f7835c4b1804e458a5c866cde0097430aChris Lattner NextVal = llvm::ConstantFP::get(F); 611ca2617c0e1f87c9da4d9aa3db4ea854ee2f6a1daChris Lattner } 612e936cc8890b94e83f530453c8c9167fb5de9b5faChris Lattner NextVal = Builder.CreateAdd(InVal, NextVal, isInc ? "inc" : "dec"); 613e936cc8890b94e83f530453c8c9167fb5de9b5faChris Lattner } 6147f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 6157f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Store the updated result through the lvalue. 6167f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner CGF.EmitStoreThroughLValue(RValue::get(NextVal), LV, 6177f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner E->getSubExpr()->getType()); 6187f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 6197f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // If this is a postinc, return the value read from memory, otherwise use the 6207f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // updated value. 6217f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return isPre ? NextVal : InVal; 6227f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 6237f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 6247f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 6257f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::VisitUnaryMinus(const UnaryOperator *E) { 6267f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *Op = Visit(E->getSubExpr()); 6277f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateNeg(Op, "neg"); 6287f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 6297f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 6307f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::VisitUnaryNot(const UnaryOperator *E) { 6317f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *Op = Visit(E->getSubExpr()); 6327f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateNot(Op, "neg"); 6337f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 6347f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 6357f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::VisitUnaryLNot(const UnaryOperator *E) { 6367f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Compare operand to zero. 6377f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *BoolVal = CGF.EvaluateExprAsBool(E->getSubExpr()); 6387f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 6397f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Invert value. 6407f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // TODO: Could dynamically modify easy computations here. For example, if 6417f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // the operand is an icmp ne, turn into icmp eq. 6427f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner BoolVal = Builder.CreateNot(BoolVal, "lnot"); 6437f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 6447f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // ZExt result to int. 6457f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateZExt(BoolVal, CGF.LLVMIntTy, "lnot.ext"); 6467f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 6477f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 6480518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl/// VisitSizeOfAlignOfExpr - Return the size or alignment of the type of 6490518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl/// argument of the sizeof expression as an integer. 6500518999d3adcc289997bd974dce90cc97f5c1c44Sebastian RedlValue * 6510518999d3adcc289997bd974dce90cc97f5c1c44Sebastian RedlScalarExprEmitter::VisitSizeOfAlignOfExpr(const SizeOfAlignOfExpr *E) { 6520518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl QualType RetType = E->getType(); 653a269ebfd91c4fa47e051fa1fa904833a022fe025Chris Lattner assert(RetType->isIntegerType() && "Result type must be an integer!"); 654a269ebfd91c4fa47e051fa1fa904833a022fe025Chris Lattner uint32_t ResultWidth = 65598be4943e8dc4f3905629a7102668960873cf863Chris Lattner static_cast<uint32_t>(CGF.getContext().getTypeSize(RetType)); 656a269ebfd91c4fa47e051fa1fa904833a022fe025Chris Lattner 6570518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl QualType TypeToSize = E->getTypeOfArgument(); 6589140845f95d7dedd410d93c3390dd00104c76b0aDaniel Dunbar // sizeof(void) and __alignof__(void) = 1 as a gcc extension. Also 6599140845f95d7dedd410d93c3390dd00104c76b0aDaniel Dunbar // for function types. 6608ee6a63ba1cc2455f4b3e9111091908d50796818Daniel Dunbar // FIXME: what is alignof a function type in gcc? 6619140845f95d7dedd410d93c3390dd00104c76b0aDaniel Dunbar if (TypeToSize->isVoidType() || TypeToSize->isFunctionType()) 662a269ebfd91c4fa47e051fa1fa904833a022fe025Chris Lattner return llvm::ConstantInt::get(llvm::APInt(ResultWidth, 1)); 663a269ebfd91c4fa47e051fa1fa904833a022fe025Chris Lattner 6645d46315ca3cbbfe0d0f5f65520b618fb05dd4446Anders Carlsson if (const VariableArrayType *VAT = 6655d46315ca3cbbfe0d0f5f65520b618fb05dd4446Anders Carlsson CGF.getContext().getAsVariableArrayType(TypeToSize)) { 6665d46315ca3cbbfe0d0f5f65520b618fb05dd4446Anders Carlsson if (E->isSizeOf()) 6675d46315ca3cbbfe0d0f5f65520b618fb05dd4446Anders Carlsson return CGF.GetVLASize(VAT); 66871e38c48609b3502d24a47d39a21f1e73402a0e1Chris Lattner // FIXME: This should be an UNSUPPORTED error. 66971e38c48609b3502d24a47d39a21f1e73402a0e1Chris Lattner assert(0 && "alignof VLAs not implemented yet"); 6705d46315ca3cbbfe0d0f5f65520b618fb05dd4446Anders Carlsson } 6715d46315ca3cbbfe0d0f5f65520b618fb05dd4446Anders Carlsson 67298be4943e8dc4f3905629a7102668960873cf863Chris Lattner std::pair<uint64_t, unsigned> Info = CGF.getContext().getTypeInfo(TypeToSize); 6737f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 6740518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl uint64_t Val = E->isSizeOf() ? Info.first : Info.second; 6757f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Val /= 8; // Return size in bytes, not bits. 6767f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 6777f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return llvm::ConstantInt::get(llvm::APInt(ResultWidth, Val)); 6787f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 6797f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 68046f93d021a1778442c1c4a53f0b94a68bfae3be5Chris LattnerValue *ScalarExprEmitter::VisitUnaryReal(const UnaryOperator *E) { 68146f93d021a1778442c1c4a53f0b94a68bfae3be5Chris Lattner Expr *Op = E->getSubExpr(); 6829b2dc287177394a8f73833e2ad4f7ca8cd6f22bbChris Lattner if (Op->getType()->isAnyComplexType()) 68346f93d021a1778442c1c4a53f0b94a68bfae3be5Chris Lattner return CGF.EmitComplexExpr(Op).first; 68446f93d021a1778442c1c4a53f0b94a68bfae3be5Chris Lattner return Visit(Op); 68546f93d021a1778442c1c4a53f0b94a68bfae3be5Chris Lattner} 68646f93d021a1778442c1c4a53f0b94a68bfae3be5Chris LattnerValue *ScalarExprEmitter::VisitUnaryImag(const UnaryOperator *E) { 68746f93d021a1778442c1c4a53f0b94a68bfae3be5Chris Lattner Expr *Op = E->getSubExpr(); 6889b2dc287177394a8f73833e2ad4f7ca8cd6f22bbChris Lattner if (Op->getType()->isAnyComplexType()) 68946f93d021a1778442c1c4a53f0b94a68bfae3be5Chris Lattner return CGF.EmitComplexExpr(Op).second; 69036f8406db837957b24b926fd657af909e1b12665Chris Lattner 69136f8406db837957b24b926fd657af909e1b12665Chris Lattner // __imag on a scalar returns zero. Emit it the subexpr to ensure side 69236f8406db837957b24b926fd657af909e1b12665Chris Lattner // effects are evaluated. 69336f8406db837957b24b926fd657af909e1b12665Chris Lattner CGF.EmitScalarExpr(Op); 69436f8406db837957b24b926fd657af909e1b12665Chris Lattner return llvm::Constant::getNullValue(ConvertType(E->getType())); 69546f93d021a1778442c1c4a53f0b94a68bfae3be5Chris Lattner} 69646f93d021a1778442c1c4a53f0b94a68bfae3be5Chris Lattner 6975a1deb8d9c0722beae28d693fa137bbb942bd11fAnders CarlssonValue *ScalarExprEmitter::VisitUnaryOffsetOf(const UnaryOperator *E) 6985a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson{ 6995a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson int64_t Val = E->evaluateOffsetOf(CGF.getContext()); 7005a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson 7015a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson assert(E->getType()->isIntegerType() && "Result type must be an integer!"); 7025a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson 70398be4943e8dc4f3905629a7102668960873cf863Chris Lattner uint32_t ResultWidth = 70498be4943e8dc4f3905629a7102668960873cf863Chris Lattner static_cast<uint32_t>(CGF.getContext().getTypeSize(E->getType())); 7055a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson return llvm::ConstantInt::get(llvm::APInt(ResultWidth, Val)); 7065a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson} 70746f93d021a1778442c1c4a53f0b94a68bfae3be5Chris Lattner 7087f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner//===----------------------------------------------------------------------===// 7097f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner// Binary Operators 7107f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner//===----------------------------------------------------------------------===// 7117f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 7127f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerBinOpInfo ScalarExprEmitter::EmitBinOps(const BinaryOperator *E) { 7137f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner BinOpInfo Result; 7147f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Result.LHS = Visit(E->getLHS()); 7157f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Result.RHS = Visit(E->getRHS()); 7161f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner Result.Ty = E->getType(); 7177f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Result.E = E; 7187f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Result; 7197f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 7207f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 7213ccf774256382ef9aa95028eaad82f54a3d0b0adChris LattnerValue *ScalarExprEmitter::EmitCompoundAssign(const CompoundAssignOperator *E, 7221f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner Value *(ScalarExprEmitter::*Func)(const BinOpInfo &)) { 7231f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner QualType LHSTy = E->getLHS()->getType(), RHSTy = E->getRHS()->getType(); 7241f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner 7251f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner BinOpInfo OpInfo; 7261f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner 7271f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner // Load the LHS and RHS operands. 7281f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner LValue LHSLV = EmitLValue(E->getLHS()); 7291f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner OpInfo.LHS = EmitLoadOfLValue(LHSLV, LHSTy); 73004dc76496e869460a1acb7923fc00163c0128b0aChris Lattner 73104dc76496e869460a1acb7923fc00163c0128b0aChris Lattner // Determine the computation type. If the RHS is complex, then this is one of 73204dc76496e869460a1acb7923fc00163c0128b0aChris Lattner // the add/sub/mul/div operators. All of these operators can be computed in 73304dc76496e869460a1acb7923fc00163c0128b0aChris Lattner // with just their real component even though the computation domain really is 73404dc76496e869460a1acb7923fc00163c0128b0aChris Lattner // complex. 73504dc76496e869460a1acb7923fc00163c0128b0aChris Lattner QualType ComputeType = E->getComputationType(); 7361f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner 73704dc76496e869460a1acb7923fc00163c0128b0aChris Lattner // If the computation type is complex, then the RHS is complex. Emit the RHS. 73804dc76496e869460a1acb7923fc00163c0128b0aChris Lattner if (const ComplexType *CT = ComputeType->getAsComplexType()) { 73904dc76496e869460a1acb7923fc00163c0128b0aChris Lattner ComputeType = CT->getElementType(); 74004dc76496e869460a1acb7923fc00163c0128b0aChris Lattner 74104dc76496e869460a1acb7923fc00163c0128b0aChris Lattner // Emit the RHS, only keeping the real component. 74204dc76496e869460a1acb7923fc00163c0128b0aChris Lattner OpInfo.RHS = CGF.EmitComplexExpr(E->getRHS()).first; 74304dc76496e869460a1acb7923fc00163c0128b0aChris Lattner RHSTy = RHSTy->getAsComplexType()->getElementType(); 74404dc76496e869460a1acb7923fc00163c0128b0aChris Lattner } else { 74504dc76496e869460a1acb7923fc00163c0128b0aChris Lattner // Otherwise the RHS is a simple scalar value. 74604dc76496e869460a1acb7923fc00163c0128b0aChris Lattner OpInfo.RHS = Visit(E->getRHS()); 74704dc76496e869460a1acb7923fc00163c0128b0aChris Lattner } 7481f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner 7498c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar QualType LComputeTy, RComputeTy, ResultTy; 7508c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar 7518c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // Compound assignment does not contain enough information about all 7528c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // the types involved for pointer arithmetic cases. Figure it out 7538c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // here for now. 7548c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar if (E->getLHS()->getType()->isPointerType()) { 7558c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // Pointer arithmetic cases: ptr +=,-= int and ptr -= ptr, 7568c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar assert((E->getOpcode() == BinaryOperator::AddAssign || 7578c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar E->getOpcode() == BinaryOperator::SubAssign) && 7588c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar "Invalid compound assignment operator on pointer type."); 7598c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar LComputeTy = E->getLHS()->getType(); 7608c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar 7618c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar if (E->getRHS()->getType()->isPointerType()) { 7628c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // Degenerate case of (ptr -= ptr) allowed by GCC implicit cast 7638c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // extension, the conversion from the pointer difference back to 7648c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // the LHS type is handled at the end. 7658c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar assert(E->getOpcode() == BinaryOperator::SubAssign && 7668c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar "Invalid compound assignment operator on pointer type."); 7678c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar RComputeTy = E->getLHS()->getType(); 7688c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar ResultTy = CGF.getContext().getPointerDiffType(); 7698c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar } else { 7708c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar RComputeTy = E->getRHS()->getType(); 7718c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar ResultTy = LComputeTy; 7728c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar } 7738c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar } else if (E->getRHS()->getType()->isPointerType()) { 7748c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // Degenerate case of (int += ptr) allowed by GCC implicit cast 7758c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // extension. 7768c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar assert(E->getOpcode() == BinaryOperator::AddAssign && 7778c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar "Invalid compound assignment operator on pointer type."); 7788c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar LComputeTy = E->getLHS()->getType(); 7798c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar RComputeTy = E->getRHS()->getType(); 7808c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar ResultTy = RComputeTy; 7818c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar } else { 7828c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar LComputeTy = RComputeTy = ResultTy = ComputeType; 7831f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner } 7848c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar 7858c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // Convert the LHS/RHS values to the computation type. 7868c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar OpInfo.LHS = EmitScalarConversion(OpInfo.LHS, LHSTy, LComputeTy); 7878c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar OpInfo.RHS = EmitScalarConversion(OpInfo.RHS, RHSTy, RComputeTy); 7888c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar OpInfo.Ty = ResultTy; 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. 7958c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar Result = EmitScalarConversion(Result, ResultTy, LHSTy); 7961f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner 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"); 8321f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner 8331f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner // FIXME: What about a pointer to a VLA? 8348f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner Value *Ptr, *Idx; 8358f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner Expr *IdxExp; 8368f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner if (isa<llvm::PointerType>(Ops.LHS->getType())) { // pointer + int 8378f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner Ptr = Ops.LHS; 8388f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner Idx = Ops.RHS; 8398f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner IdxExp = Ops.E->getRHS(); 8408f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner } else { // int + pointer 8418f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner Ptr = Ops.RHS; 8428f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner Idx = Ops.LHS; 8438f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner IdxExp = Ops.E->getLHS(); 8448f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner } 8458f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner 8468f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner unsigned Width = cast<llvm::IntegerType>(Idx->getType())->getBitWidth(); 8478f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner if (Width < CGF.LLVMPointerWidth) { 8488f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner // Zero or sign extend the pointer value based on whether the index is 8498f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner // signed or not. 8508f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner const llvm::Type *IdxType = llvm::IntegerType::get(CGF.LLVMPointerWidth); 8519619662a1d42e2008b865d3459c0677e149dad1bChris Lattner if (IdxExp->getType()->isSignedIntegerType()) 8528f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner Idx = Builder.CreateSExt(Idx, IdxType, "idx.ext"); 8538f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner else 8548f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner Idx = Builder.CreateZExt(Idx, IdxType, "idx.ext"); 8558f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner } 8568f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner 8578f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner return Builder.CreateGEP(Ptr, Idx, "add.ptr"); 8587f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 8597f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 8607f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::EmitSub(const BinOpInfo &Ops) { 8617f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner if (!isa<llvm::PointerType>(Ops.LHS->getType())) 8627f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateSub(Ops.LHS, Ops.RHS, "sub"); 8631f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner 8648c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar if (!isa<llvm::PointerType>(Ops.RHS->getType())) { 8658c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // pointer - int 8668c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar Value *Idx = Ops.RHS; 8678c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar unsigned Width = cast<llvm::IntegerType>(Idx->getType())->getBitWidth(); 8688c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar if (Width < CGF.LLVMPointerWidth) { 8698c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // Zero or sign extend the pointer value based on whether the index is 8708c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // signed or not. 8718c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar const llvm::Type *IdxType = llvm::IntegerType::get(CGF.LLVMPointerWidth); 8728c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar if (Ops.E->getRHS()->getType()->isSignedIntegerType()) 8738c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar Idx = Builder.CreateSExt(Idx, IdxType, "idx.ext"); 8748c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar else 8758c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar Idx = Builder.CreateZExt(Idx, IdxType, "idx.ext"); 8768c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar } 8778c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar Idx = Builder.CreateNeg(Idx, "sub.ptr.neg"); 8788c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar 8798c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // FIXME: The pointer could point to a VLA. 8808c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // The GNU void* - int case is automatically handled here because 8818c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // our LLVM type for void* is i8*. 8828c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar return Builder.CreateGEP(Ops.LHS, Idx, "sub.ptr"); 883820b03398fdcc8f1f6c60ace55b708e311fa8ce4Daniel Dunbar } else { 8848c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // pointer - pointer 8858c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar Value *LHS = Ops.LHS; 8868c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar Value *RHS = Ops.RHS; 8871f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner 8888c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar const QualType LHSType = Ops.E->getLHS()->getType(); 8898c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar const QualType LHSElementType = LHSType->getAsPointerType()->getPointeeType(); 8908c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar uint64_t ElementSize; 891820b03398fdcc8f1f6c60ace55b708e311fa8ce4Daniel Dunbar 8928c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // Handle GCC extension for pointer arithmetic on void* types. 8938c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar if (LHSElementType->isVoidType()) { 8948c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar ElementSize = 1; 8958c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar } else { 8968c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar ElementSize = CGF.getContext().getTypeSize(LHSElementType) / 8; 8978c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar } 8988c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar 8998c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar const llvm::Type *ResultType = ConvertType(Ops.Ty); 9008c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar LHS = Builder.CreatePtrToInt(LHS, ResultType, "sub.ptr.lhs.cast"); 9018c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar RHS = Builder.CreatePtrToInt(RHS, ResultType, "sub.ptr.rhs.cast"); 9028c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar Value *BytesBetween = Builder.CreateSub(LHS, RHS, "sub.ptr.sub"); 9038c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar 9048c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // HACK: LLVM doesn't have an divide instruction that 'knows' there is no 9058c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // remainder. As such, we handle common power-of-two cases here to generate 9068c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // better code. See PR2247. 9078c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar if (llvm::isPowerOf2_64(ElementSize)) { 9088c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar Value *ShAmt = 9098c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar llvm::ConstantInt::get(ResultType, llvm::Log2_64(ElementSize)); 9108c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar return Builder.CreateAShr(BytesBetween, ShAmt, "sub.ptr.shr"); 9118c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar } 9128c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar 9138c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // Otherwise, do a full sdiv. 9148c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar Value *BytesPerElt = llvm::ConstantInt::get(ResultType, ElementSize); 9158c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar return Builder.CreateSDiv(BytesBetween, BytesPerElt, "sub.ptr.div"); 9167f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 9177f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 9187f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 9197f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::EmitShl(const BinOpInfo &Ops) { 9207f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // LLVM requires the LHS and RHS to be the same type: promote or truncate the 9217f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // RHS to the same size as the LHS. 9227f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *RHS = Ops.RHS; 9237f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner if (Ops.LHS->getType() != RHS->getType()) 9247f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner RHS = Builder.CreateIntCast(RHS, Ops.LHS->getType(), false, "sh_prom"); 9257f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 9267f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateShl(Ops.LHS, RHS, "shl"); 9277f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 9287f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 9297f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::EmitShr(const BinOpInfo &Ops) { 9307f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // LLVM requires the LHS and RHS to be the same type: promote or truncate the 9317f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // RHS to the same size as the LHS. 9327f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *RHS = Ops.RHS; 9337f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner if (Ops.LHS->getType() != RHS->getType()) 9347f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner RHS = Builder.CreateIntCast(RHS, Ops.LHS->getType(), false, "sh_prom"); 9357f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 9361f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner if (Ops.Ty->isUnsignedIntegerType()) 9377f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateLShr(Ops.LHS, RHS, "shr"); 9387f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateAShr(Ops.LHS, RHS, "shr"); 9397f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 9407f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 9417f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::EmitCompare(const BinaryOperator *E,unsigned UICmpOpc, 9427f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner unsigned SICmpOpc, unsigned FCmpOpc) { 9434f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner Value *Result; 9447f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner QualType LHSTy = E->getLHS()->getType(); 9457a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman if (!LHSTy->isAnyComplexType() && !LHSTy->isVectorType()) { 9467f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *LHS = Visit(E->getLHS()); 9477f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *RHS = Visit(E->getRHS()); 9487f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 9497f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner if (LHS->getType()->isFloatingPoint()) { 9507a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman Result = Builder.CreateFCmp((llvm::CmpInst::Predicate)FCmpOpc, 9517f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner LHS, RHS, "cmp"); 952ec2c12646aee07bf6bb1b4092d538d5860fd0661Eli Friedman } else if (LHSTy->isSignedIntegerType()) { 953ec2c12646aee07bf6bb1b4092d538d5860fd0661Eli Friedman Result = Builder.CreateICmp((llvm::ICmpInst::Predicate)SICmpOpc, 9547f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner LHS, RHS, "cmp"); 9557f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } else { 956ec2c12646aee07bf6bb1b4092d538d5860fd0661Eli Friedman // Unsigned integers and pointers. 957ec2c12646aee07bf6bb1b4092d538d5860fd0661Eli Friedman Result = Builder.CreateICmp((llvm::ICmpInst::Predicate)UICmpOpc, 9587f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner LHS, RHS, "cmp"); 9597f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 9607a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman } else if (LHSTy->isVectorType()) { 9617a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman Value *LHS = Visit(E->getLHS()); 9627a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman Value *RHS = Visit(E->getRHS()); 9637a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman 9647a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman if (LHS->getType()->isFPOrFPVector()) { 9657a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman Result = Builder.CreateVFCmp((llvm::CmpInst::Predicate)FCmpOpc, 9667a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman LHS, RHS, "cmp"); 9677a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman } else if (LHSTy->isUnsignedIntegerType()) { 9687a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman Result = Builder.CreateVICmp((llvm::CmpInst::Predicate)UICmpOpc, 9697a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman LHS, RHS, "cmp"); 9707a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman } else { 9717a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman // Signed integers and pointers. 9727a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman Result = Builder.CreateVICmp((llvm::CmpInst::Predicate)SICmpOpc, 9737a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman LHS, RHS, "cmp"); 9747a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman } 9757a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman return Result; 9767f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } else { 9777f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Complex Comparison: can only be an equality comparison. 9787f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner CodeGenFunction::ComplexPairTy LHS = CGF.EmitComplexExpr(E->getLHS()); 9797f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner CodeGenFunction::ComplexPairTy RHS = CGF.EmitComplexExpr(E->getRHS()); 9807f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 9819619662a1d42e2008b865d3459c0677e149dad1bChris Lattner QualType CETy = LHSTy->getAsComplexType()->getElementType(); 9827f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 9834f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner Value *ResultR, *ResultI; 9847f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner if (CETy->isRealFloatingType()) { 9857f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner ResultR = Builder.CreateFCmp((llvm::FCmpInst::Predicate)FCmpOpc, 9867f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner LHS.first, RHS.first, "cmp.r"); 9877f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner ResultI = Builder.CreateFCmp((llvm::FCmpInst::Predicate)FCmpOpc, 9887f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner LHS.second, RHS.second, "cmp.i"); 9897f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } else { 9907f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Complex comparisons can only be equality comparisons. As such, signed 9917f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // and unsigned opcodes are the same. 9927f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner ResultR = Builder.CreateICmp((llvm::ICmpInst::Predicate)UICmpOpc, 9937f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner LHS.first, RHS.first, "cmp.r"); 9947f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner ResultI = Builder.CreateICmp((llvm::ICmpInst::Predicate)UICmpOpc, 9957f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner LHS.second, RHS.second, "cmp.i"); 9967f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 9977f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 9987f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner if (E->getOpcode() == BinaryOperator::EQ) { 9997f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Result = Builder.CreateAnd(ResultR, ResultI, "and.ri"); 10007f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } else { 10017f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner assert(E->getOpcode() == BinaryOperator::NE && 10027f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner "Complex comparison other than == or != ?"); 10037f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Result = Builder.CreateOr(ResultR, ResultI, "or.ri"); 10047f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 10057f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 10067f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 10077f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // ZExt result to int. 10087f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateZExt(Result, CGF.LLVMIntTy, "cmp.ext"); 10097f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 10107f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 10117f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::VisitBinAssign(const BinaryOperator *E) { 10127f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner LValue LHS = EmitLValue(E->getLHS()); 10137f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *RHS = Visit(E->getRHS()); 10147f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 1015ed3849b456d64d124bddc7ac044f3ce590bd9d69Daniel Dunbar // Store the value into the LHS. Bit-fields are handled specially 1016371d16f45aeec61c1d07687f763d92137e133642Daniel Dunbar // because the result is altered by the store, i.e., [C99 6.5.16p1] 1017371d16f45aeec61c1d07687f763d92137e133642Daniel Dunbar // 'An assignment expression has the value of the left operand after 1018371d16f45aeec61c1d07687f763d92137e133642Daniel Dunbar // the assignment...'. 10197f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // FIXME: Volatility! 10201849128c7d88247d914f05efe4c03907f0932174Eli Friedman if (LHS.isBitfield()) 1021ed3849b456d64d124bddc7ac044f3ce590bd9d69Daniel Dunbar CGF.EmitStoreThroughBitfieldLValue(RValue::get(RHS), LHS, E->getType(), 1022ed3849b456d64d124bddc7ac044f3ce590bd9d69Daniel Dunbar &RHS); 1023ed3849b456d64d124bddc7ac044f3ce590bd9d69Daniel Dunbar else 1024ed3849b456d64d124bddc7ac044f3ce590bd9d69Daniel Dunbar CGF.EmitStoreThroughLValue(RValue::get(RHS), LHS, E->getType()); 102585c59edda02df48fae8dc85049743319bc6e7e89Daniel Dunbar 10267f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Return the RHS. 10277f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return RHS; 10287f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 10297f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 10307f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::VisitBinLAnd(const BinaryOperator *E) { 103120eb09d562b80420a3328be789547af354bf3e36Chris Lattner // If we have 0 && RHS, see if we can elide RHS, if so, just return 0. 103220eb09d562b80420a3328be789547af354bf3e36Chris Lattner // If we have 1 && X, just emit X without inserting the control flow. 103320eb09d562b80420a3328be789547af354bf3e36Chris Lattner if (int Cond = CGF.ConstantFoldsToSimpleInteger(E->getLHS())) { 103420eb09d562b80420a3328be789547af354bf3e36Chris Lattner if (Cond == 1) { // If we have 1 && X, just emit X. 10350946ccd1e58c1f1da31ddbca67c5b6301ac8b255Chris Lattner Value *RHSCond = CGF.EvaluateExprAsBool(E->getRHS()); 10360946ccd1e58c1f1da31ddbca67c5b6301ac8b255Chris Lattner // ZExt result to int. 10370946ccd1e58c1f1da31ddbca67c5b6301ac8b255Chris Lattner return Builder.CreateZExt(RHSCond, CGF.LLVMIntTy, "land.ext"); 10380946ccd1e58c1f1da31ddbca67c5b6301ac8b255Chris Lattner } 103920eb09d562b80420a3328be789547af354bf3e36Chris Lattner 104020eb09d562b80420a3328be789547af354bf3e36Chris Lattner // 0 && RHS: If it is safe, just elide the RHS, and return 0. 104120eb09d562b80420a3328be789547af354bf3e36Chris Lattner if (!CGF.ContainsLabel(E->getRHS())) 104220eb09d562b80420a3328be789547af354bf3e36Chris Lattner return llvm::Constant::getNullValue(CGF.LLVMIntTy); 10430946ccd1e58c1f1da31ddbca67c5b6301ac8b255Chris Lattner } 10440946ccd1e58c1f1da31ddbca67c5b6301ac8b255Chris Lattner 10459615ecb44f549ae9fa2b4db6ff46bc78befbf62cDaniel Dunbar llvm::BasicBlock *ContBlock = CGF.createBasicBlock("land.end"); 10469615ecb44f549ae9fa2b4db6ff46bc78befbf62cDaniel Dunbar llvm::BasicBlock *RHSBlock = CGF.createBasicBlock("land.rhs"); 104720eb09d562b80420a3328be789547af354bf3e36Chris Lattner 1048f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner // Branch on the LHS first. If it is false, go to the failure (cont) block. 1049f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner CGF.EmitBranchOnBoolExpr(E->getLHS(), RHSBlock, ContBlock); 1050f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner 1051f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner // Any edges into the ContBlock are now from an (indeterminate number of) 1052f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner // edges from this first condition. All of these values will be false. Start 1053f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner // setting up the PHI node in the Cont Block for this. 1054f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner llvm::PHINode *PN = llvm::PHINode::Create(llvm::Type::Int1Ty, "", ContBlock); 1055f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner PN->reserveOperandSpace(2); // Normal case, two inputs. 1056f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner for (llvm::pred_iterator PI = pred_begin(ContBlock), PE = pred_end(ContBlock); 1057f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner PI != PE; ++PI) 1058f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner PN->addIncoming(llvm::ConstantInt::getFalse(), *PI); 10597f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 10607f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner CGF.EmitBlock(RHSBlock); 10617f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *RHSCond = CGF.EvaluateExprAsBool(E->getRHS()); 10627f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 10637f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Reaquire the RHS block, as there may be subblocks inserted. 10647f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner RHSBlock = Builder.GetInsertBlock(); 1065f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner 1066f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner // Emit an unconditional branch from this block to ContBlock. Insert an entry 1067f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner // into the phi node for the edge with the value of RHSCond. 10687f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner CGF.EmitBlock(ContBlock); 10697f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner PN->addIncoming(RHSCond, RHSBlock); 10707f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 10717f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // ZExt result to int. 10727f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateZExt(PN, CGF.LLVMIntTy, "land.ext"); 10737f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 10747f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 10757f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::VisitBinLOr(const BinaryOperator *E) { 107620eb09d562b80420a3328be789547af354bf3e36Chris Lattner // If we have 1 || RHS, see if we can elide RHS, if so, just return 1. 107720eb09d562b80420a3328be789547af354bf3e36Chris Lattner // If we have 0 || X, just emit X without inserting the control flow. 107820eb09d562b80420a3328be789547af354bf3e36Chris Lattner if (int Cond = CGF.ConstantFoldsToSimpleInteger(E->getLHS())) { 107920eb09d562b80420a3328be789547af354bf3e36Chris Lattner if (Cond == -1) { // If we have 0 || X, just emit X. 10800946ccd1e58c1f1da31ddbca67c5b6301ac8b255Chris Lattner Value *RHSCond = CGF.EvaluateExprAsBool(E->getRHS()); 10810946ccd1e58c1f1da31ddbca67c5b6301ac8b255Chris Lattner // ZExt result to int. 10820946ccd1e58c1f1da31ddbca67c5b6301ac8b255Chris Lattner return Builder.CreateZExt(RHSCond, CGF.LLVMIntTy, "lor.ext"); 10830946ccd1e58c1f1da31ddbca67c5b6301ac8b255Chris Lattner } 108420eb09d562b80420a3328be789547af354bf3e36Chris Lattner 10858de8d1d3f2e21e4a72ac294276930ad293a3a765Eli Friedman // 1 || RHS: If it is safe, just elide the RHS, and return 1. 108620eb09d562b80420a3328be789547af354bf3e36Chris Lattner if (!CGF.ContainsLabel(E->getRHS())) 10878de8d1d3f2e21e4a72ac294276930ad293a3a765Eli Friedman return llvm::ConstantInt::get(CGF.LLVMIntTy, 1); 10880946ccd1e58c1f1da31ddbca67c5b6301ac8b255Chris Lattner } 10890946ccd1e58c1f1da31ddbca67c5b6301ac8b255Chris Lattner 10909615ecb44f549ae9fa2b4db6ff46bc78befbf62cDaniel Dunbar llvm::BasicBlock *ContBlock = CGF.createBasicBlock("lor.end"); 10919615ecb44f549ae9fa2b4db6ff46bc78befbf62cDaniel Dunbar llvm::BasicBlock *RHSBlock = CGF.createBasicBlock("lor.rhs"); 10927f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 1093f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner // Branch on the LHS first. If it is true, go to the success (cont) block. 1094f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner CGF.EmitBranchOnBoolExpr(E->getLHS(), ContBlock, RHSBlock); 1095f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner 1096f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner // Any edges into the ContBlock are now from an (indeterminate number of) 1097f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner // edges from this first condition. All of these values will be true. Start 1098f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner // setting up the PHI node in the Cont Block for this. 1099f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner llvm::PHINode *PN = llvm::PHINode::Create(llvm::Type::Int1Ty, "", ContBlock); 1100f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner PN->reserveOperandSpace(2); // Normal case, two inputs. 1101f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner for (llvm::pred_iterator PI = pred_begin(ContBlock), PE = pred_end(ContBlock); 1102f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner PI != PE; ++PI) 1103f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner PN->addIncoming(llvm::ConstantInt::getTrue(), *PI); 1104f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner 1105f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner // Emit the RHS condition as a bool value. 11067f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner CGF.EmitBlock(RHSBlock); 11077f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *RHSCond = CGF.EvaluateExprAsBool(E->getRHS()); 11087f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 11097f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Reaquire the RHS block, as there may be subblocks inserted. 11107f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner RHSBlock = Builder.GetInsertBlock(); 11117f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 1112f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner // Emit an unconditional branch from this block to ContBlock. Insert an entry 1113f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner // into the phi node for the edge with the value of RHSCond. 1114f7b5ea9de3d043fa900ab8a8976a4c0eefc233b7Chris Lattner CGF.EmitBlock(ContBlock); 11157f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner PN->addIncoming(RHSCond, RHSBlock); 11167f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 11177f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // ZExt result to int. 11187f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateZExt(PN, CGF.LLVMIntTy, "lor.ext"); 11197f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 11207f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 11217f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::VisitBinComma(const BinaryOperator *E) { 11227f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner CGF.EmitStmt(E->getLHS()); 1123a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar CGF.EnsureInsertPoint(); 11247f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Visit(E->getRHS()); 11257f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 11267f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 11277f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner//===----------------------------------------------------------------------===// 11287f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner// Other Operators 11297f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner//===----------------------------------------------------------------------===// 11307f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 11319802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner/// isCheapEnoughToEvaluateUnconditionally - Return true if the specified 11329802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner/// expression is cheap enough and side-effect-free enough to evaluate 11339802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner/// unconditionally instead of conditionally. This is used to convert control 11349802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner/// flow into selects in some cases. 11359802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattnerstatic bool isCheapEnoughToEvaluateUnconditionally(const Expr *E) { 11369802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner if (const ParenExpr *PE = dyn_cast<ParenExpr>(E)) 11379802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner return isCheapEnoughToEvaluateUnconditionally(PE->getSubExpr()); 11389802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner 11399802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner // TODO: Allow anything we can constant fold to an integer or fp constant. 11409802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner if (isa<IntegerLiteral>(E) || isa<CharacterLiteral>(E) || 11419802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner isa<FloatingLiteral>(E)) 11429802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner return true; 11439802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner 11449802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner // Non-volatile automatic variables too, to get "cond ? X : Y" where 11459802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner // X and Y are local variables. 11469802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E)) 11479802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner if (const VarDecl *VD = dyn_cast<VarDecl>(DRE->getDecl())) 11489802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner if (VD->hasLocalStorage() && !VD->getType().isVolatileQualified()) 11499802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner return true; 11509802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner 11519802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner return false; 11529802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner} 11539802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner 11549802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner 11557f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter:: 11567f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerVisitConditionalOperator(const ConditionalOperator *E) { 115731a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattner // If the condition constant folds and can be elided, try to avoid emitting 115831a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattner // the condition and the dead arm. 115931a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattner if (int Cond = CGF.ConstantFoldsToSimpleInteger(E->getCond())){ 1160c657e92d7b44568fe39ae018a69b18cbcc4ea3b0Chris Lattner Expr *Live = E->getLHS(), *Dead = E->getRHS(); 116131a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattner if (Cond == -1) 1162c657e92d7b44568fe39ae018a69b18cbcc4ea3b0Chris Lattner std::swap(Live, Dead); 116331a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattner 116431a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattner // If the dead side doesn't have labels we need, and if the Live side isn't 116531a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattner // the gnu missing ?: extension (which we could handle, but don't bother 116631a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattner // to), just emit the Live part. 116731a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattner if ((!Dead || !CGF.ContainsLabel(Dead)) && // No labels in dead part 116831a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattner Live) // Live part isn't missing. 116931a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattner return Visit(Live); 1170c657e92d7b44568fe39ae018a69b18cbcc4ea3b0Chris Lattner } 1171c657e92d7b44568fe39ae018a69b18cbcc4ea3b0Chris Lattner 11729802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner 11739802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner // If this is a really simple expression (like x ? 4 : 5), emit this as a 11749802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner // select instead of as control flow. We can only do this if it is cheap and 1175531a550531c144a58438f187816abbf1879e1c4eChris Lattner // safe to evaluate the LHS and RHS unconditionally. 11769802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner if (E->getLHS() && isCheapEnoughToEvaluateUnconditionally(E->getLHS()) && 11779802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner isCheapEnoughToEvaluateUnconditionally(E->getRHS())) { 11789802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner llvm::Value *CondV = CGF.EvaluateExprAsBool(E->getCond()); 11799802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner llvm::Value *LHS = Visit(E->getLHS()); 11809802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner llvm::Value *RHS = Visit(E->getRHS()); 11819802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner return Builder.CreateSelect(CondV, LHS, RHS, "cond"); 11829802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner } 11839802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner 11849802a5173ffd403d9ede2d4b6b6107fa2e220544Chris Lattner 1185be65abc8e41213ecb951f2f507fb2e13a151d30cDaniel Dunbar llvm::BasicBlock *LHSBlock = CGF.createBasicBlock("cond.true"); 1186be65abc8e41213ecb951f2f507fb2e13a151d30cDaniel Dunbar llvm::BasicBlock *RHSBlock = CGF.createBasicBlock("cond.false"); 11879615ecb44f549ae9fa2b4db6ff46bc78befbf62cDaniel Dunbar llvm::BasicBlock *ContBlock = CGF.createBasicBlock("cond.end"); 1188035cf4294319271ad19ddcc5ba327c8365f3575eChris Lattner Value *CondVal = 0; 1189035cf4294319271ad19ddcc5ba327c8365f3575eChris Lattner 1190035cf4294319271ad19ddcc5ba327c8365f3575eChris Lattner // If we have the GNU missing condition extension, evaluate the conditional 1191035cf4294319271ad19ddcc5ba327c8365f3575eChris Lattner // and then convert it to bool the hard way. We do this explicitly 1192035cf4294319271ad19ddcc5ba327c8365f3575eChris Lattner // because we need the unconverted value for the missing middle value of 1193035cf4294319271ad19ddcc5ba327c8365f3575eChris Lattner // the ?:. 1194035cf4294319271ad19ddcc5ba327c8365f3575eChris Lattner if (E->getLHS() == 0) { 1195035cf4294319271ad19ddcc5ba327c8365f3575eChris Lattner CondVal = CGF.EmitScalarExpr(E->getCond()); 1196035cf4294319271ad19ddcc5ba327c8365f3575eChris Lattner Value *CondBoolVal = 1197035cf4294319271ad19ddcc5ba327c8365f3575eChris Lattner CGF.EmitScalarConversion(CondVal, E->getCond()->getType(), 1198035cf4294319271ad19ddcc5ba327c8365f3575eChris Lattner CGF.getContext().BoolTy); 1199035cf4294319271ad19ddcc5ba327c8365f3575eChris Lattner Builder.CreateCondBr(CondBoolVal, LHSBlock, RHSBlock); 1200035cf4294319271ad19ddcc5ba327c8365f3575eChris Lattner } else { 1201035cf4294319271ad19ddcc5ba327c8365f3575eChris Lattner // Otherwise, just use EmitBranchOnBoolExpr to get small and simple code for 1202035cf4294319271ad19ddcc5ba327c8365f3575eChris Lattner // the branch on bool. 1203035cf4294319271ad19ddcc5ba327c8365f3575eChris Lattner CGF.EmitBranchOnBoolExpr(E->getCond(), LHSBlock, RHSBlock); 1204035cf4294319271ad19ddcc5ba327c8365f3575eChris Lattner } 12057f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 12067f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner CGF.EmitBlock(LHSBlock); 12077f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 12087f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Handle the GNU extension for missing LHS. 1209a21ddb30e56026967d58e26c5212744e1831305bChris Lattner Value *LHS; 1210a21ddb30e56026967d58e26c5212744e1831305bChris Lattner if (E->getLHS()) 1211856226c37ff10955c7f3f07ce6fa9522da23a3a5Eli Friedman LHS = Visit(E->getLHS()); 1212a21ddb30e56026967d58e26c5212744e1831305bChris Lattner else // Perform promotions, to handle cases like "short ?: int" 1213a21ddb30e56026967d58e26c5212744e1831305bChris Lattner LHS = EmitScalarConversion(CondVal, E->getCond()->getType(), E->getType()); 1214a21ddb30e56026967d58e26c5212744e1831305bChris Lattner 12157f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner LHSBlock = Builder.GetInsertBlock(); 1216d57a871339c7c98d58d93108b806f59bdf4e13e2Daniel Dunbar CGF.EmitBranch(ContBlock); 12177f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 12187f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner CGF.EmitBlock(RHSBlock); 12197f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 1220856226c37ff10955c7f3f07ce6fa9522da23a3a5Eli Friedman Value *RHS = Visit(E->getRHS()); 12217f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner RHSBlock = Builder.GetInsertBlock(); 1222d57a871339c7c98d58d93108b806f59bdf4e13e2Daniel Dunbar CGF.EmitBranch(ContBlock); 12237f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 12247f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner CGF.EmitBlock(ContBlock); 12257f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 1226108f55d6fd9a1c0e753eb8e046cb1f1b81d77a76Nuno Lopes if (!LHS || !RHS) { 12272202bce80fc72d067cbe67dc1512f7b45351fd31Chris Lattner assert(E->getType()->isVoidType() && "Non-void value should have a value"); 12282202bce80fc72d067cbe67dc1512f7b45351fd31Chris Lattner return 0; 12292202bce80fc72d067cbe67dc1512f7b45351fd31Chris Lattner } 12302202bce80fc72d067cbe67dc1512f7b45351fd31Chris Lattner 12317f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Create a PHI node for the real part. 12327f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner llvm::PHINode *PN = Builder.CreatePHI(LHS->getType(), "cond"); 12337f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner PN->reserveOperandSpace(2); 12347f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner PN->addIncoming(LHS, LHSBlock); 12357f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner PN->addIncoming(RHS, RHSBlock); 12367f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return PN; 12377f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 12387f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 12397f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::VisitChooseExpr(ChooseExpr *E) { 12407f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Emit the LHS or RHS as appropriate. 1241e9b8c0a38549692f1b8f688c05c35442fc620865Devang Patel return 1242e9b8c0a38549692f1b8f688c05c35442fc620865Devang Patel Visit(E->isConditionTrue(CGF.getContext()) ? E->getLHS() : E->getRHS()); 12437f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 12447f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 1245e2ce1d9440186cf3332368291cd884a6e3ae8946Nate BegemanValue *ScalarExprEmitter::VisitOverloadExpr(OverloadExpr *E) { 124667295d05c50ab0b5d1b0f9ef82a906701c348715Nate Begeman return CGF.EmitCallExpr(E->getFn(), E->arg_begin(), 12475549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek E->arg_end(CGF.getContext())).getScalarVal(); 1248e2ce1d9440186cf3332368291cd884a6e3ae8946Nate Begeman} 1249e2ce1d9440186cf3332368291cd884a6e3ae8946Nate Begeman 12502202bce80fc72d067cbe67dc1512f7b45351fd31Chris LattnerValue *ScalarExprEmitter::VisitVAArgExpr(VAArgExpr *VE) { 12517c50aca2fe36f6daa9bf1c8c428f30e72f96470aAnders Carlsson llvm::Value *ArgValue = EmitLValue(VE->getSubExpr()).getAddress(); 12527c50aca2fe36f6daa9bf1c8c428f30e72f96470aAnders Carlsson 1253ddf7cac45d85b73127adbbd91a2b28fc7291c57eAnders Carlsson llvm::Value *ArgPtr = CGF.EmitVAArg(ArgValue, VE->getType()); 1254ddf7cac45d85b73127adbbd91a2b28fc7291c57eAnders Carlsson 1255ddf7cac45d85b73127adbbd91a2b28fc7291c57eAnders Carlsson // If EmitVAArg fails, we fall back to the LLVM instruction. 1256ddf7cac45d85b73127adbbd91a2b28fc7291c57eAnders Carlsson if (!ArgPtr) 1257ddf7cac45d85b73127adbbd91a2b28fc7291c57eAnders Carlsson return Builder.CreateVAArg(ArgValue, ConvertType(VE->getType())); 1258ddf7cac45d85b73127adbbd91a2b28fc7291c57eAnders Carlsson 1259ddf7cac45d85b73127adbbd91a2b28fc7291c57eAnders Carlsson // FIXME: volatile? 1260ddf7cac45d85b73127adbbd91a2b28fc7291c57eAnders Carlsson return Builder.CreateLoad(ArgPtr); 12617c50aca2fe36f6daa9bf1c8c428f30e72f96470aAnders Carlsson} 12627c50aca2fe36f6daa9bf1c8c428f30e72f96470aAnders Carlsson 12632202bce80fc72d067cbe67dc1512f7b45351fd31Chris LattnerValue *ScalarExprEmitter::VisitObjCEncodeExpr(const ObjCEncodeExpr *E) { 126485f9bceab1542aafff012d4d28e998f4ba16e362Anders Carlsson std::string str; 12650d504c1da852e58ff802545c823ecff3b6c654b8Daniel Dunbar CGF.getContext().getObjCEncodingForType(E->getEncodedType(), str); 126685f9bceab1542aafff012d4d28e998f4ba16e362Anders Carlsson 126785f9bceab1542aafff012d4d28e998f4ba16e362Anders Carlsson llvm::Constant *C = llvm::ConstantArray::get(str); 126885f9bceab1542aafff012d4d28e998f4ba16e362Anders Carlsson C = new llvm::GlobalVariable(C->getType(), true, 126985f9bceab1542aafff012d4d28e998f4ba16e362Anders Carlsson llvm::GlobalValue::InternalLinkage, 127085f9bceab1542aafff012d4d28e998f4ba16e362Anders Carlsson C, ".str", &CGF.CGM.getModule()); 127185f9bceab1542aafff012d4d28e998f4ba16e362Anders Carlsson llvm::Constant *Zero = llvm::Constant::getNullValue(llvm::Type::Int32Ty); 127285f9bceab1542aafff012d4d28e998f4ba16e362Anders Carlsson llvm::Constant *Zeros[] = { Zero, Zero }; 127385f9bceab1542aafff012d4d28e998f4ba16e362Anders Carlsson C = llvm::ConstantExpr::getGetElementPtr(C, Zeros, 2); 127485f9bceab1542aafff012d4d28e998f4ba16e362Anders Carlsson 127585f9bceab1542aafff012d4d28e998f4ba16e362Anders Carlsson return C; 127685f9bceab1542aafff012d4d28e998f4ba16e362Anders Carlsson} 127785f9bceab1542aafff012d4d28e998f4ba16e362Anders Carlsson 12787f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner//===----------------------------------------------------------------------===// 12797f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner// Entry Point into this File 12807f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner//===----------------------------------------------------------------------===// 12817f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 12827f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner/// EmitComplexExpr - Emit the computation of the specified expression of 12837f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner/// complex type, ignoring the result. 12847f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *CodeGenFunction::EmitScalarExpr(const Expr *E) { 12857f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner assert(E && !hasAggregateLLVMType(E->getType()) && 12867f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner "Invalid scalar expression to emit"); 12877f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 12887f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return ScalarExprEmitter(*this).Visit(const_cast<Expr*>(E)); 12897f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 12903707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner 12913707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner/// EmitScalarConversion - Emit a conversion from the specified type to the 12923707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner/// specified destination type, both of which are LLVM scalar types. 12934f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris LattnerValue *CodeGenFunction::EmitScalarConversion(Value *Src, QualType SrcTy, 12944f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner QualType DstTy) { 12953707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner assert(!hasAggregateLLVMType(SrcTy) && !hasAggregateLLVMType(DstTy) && 12963707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner "Invalid scalar expression to emit"); 12973707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner return ScalarExprEmitter(*this).EmitScalarConversion(Src, SrcTy, DstTy); 12983707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner} 12994f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner 13004f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner/// EmitComplexToScalarConversion - Emit a conversion from the specified 13014f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner/// complex type to the specified destination type, where the destination 13024f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner/// type is an LLVM scalar type. 13034f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris LattnerValue *CodeGenFunction::EmitComplexToScalarConversion(ComplexPairTy Src, 13044f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner QualType SrcTy, 13054f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner QualType DstTy) { 13069b2dc287177394a8f73833e2ad4f7ca8cd6f22bbChris Lattner assert(SrcTy->isAnyComplexType() && !hasAggregateLLVMType(DstTy) && 13074f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner "Invalid complex -> scalar conversion"); 13084f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner return ScalarExprEmitter(*this).EmitComplexToScalarConversion(Src, SrcTy, 13094f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner DstTy); 13104f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner} 1311cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson 1312cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders CarlssonValue *CodeGenFunction::EmitShuffleVector(Value* V1, Value *V2, ...) { 1313cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson assert(V1->getType() == V2->getType() && 1314cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson "Vector operands must be of the same type"); 1315cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson unsigned NumElements = 1316cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson cast<llvm::VectorType>(V1->getType())->getNumElements(); 1317cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson 1318cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson va_list va; 1319cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson va_start(va, V2); 1320cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson 1321cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson llvm::SmallVector<llvm::Constant*, 16> Args; 1322cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson for (unsigned i = 0; i < NumElements; i++) { 1323cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson int n = va_arg(va, int); 1324cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson assert(n >= 0 && n < (int)NumElements * 2 && 1325cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson "Vector shuffle index out of bounds!"); 1326cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson Args.push_back(llvm::ConstantInt::get(llvm::Type::Int32Ty, n)); 1327cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson } 1328cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson 1329cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson const char *Name = va_arg(va, const char *); 1330cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson va_end(va); 1331cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson 1332cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson llvm::Constant *Mask = llvm::ConstantVector::get(&Args[0], NumElements); 1333cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson 1334cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson return Builder.CreateShuffleVector(V1, V2, Mask, Name); 1335cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson} 1336cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson 13376086bbd1799e22e75561c3d31dc9b923f0508fa5Anders Carlssonllvm::Value *CodeGenFunction::EmitVector(llvm::Value * const *Vals, 1338345f7209692b116ca433a3196c1e3c998e0ffcdeChris Lattner unsigned NumVals, bool isSplat) { 13396086bbd1799e22e75561c3d31dc9b923f0508fa5Anders Carlsson llvm::Value *Vec 1340345f7209692b116ca433a3196c1e3c998e0ffcdeChris Lattner = llvm::UndefValue::get(llvm::VectorType::get(Vals[0]->getType(), NumVals)); 13416086bbd1799e22e75561c3d31dc9b923f0508fa5Anders Carlsson 1342345f7209692b116ca433a3196c1e3c998e0ffcdeChris Lattner for (unsigned i = 0, e = NumVals; i != e; ++i) { 13434119d1aeca8016654d381ce079864058d1709571Nate Begeman llvm::Value *Val = isSplat ? Vals[0] : Vals[i]; 13446086bbd1799e22e75561c3d31dc9b923f0508fa5Anders Carlsson llvm::Value *Idx = llvm::ConstantInt::get(llvm::Type::Int32Ty, i); 13454119d1aeca8016654d381ce079864058d1709571Nate Begeman Vec = Builder.CreateInsertElement(Vec, Val, Idx, "tmp"); 13466086bbd1799e22e75561c3d31dc9b923f0508fa5Anders Carlsson } 13476086bbd1799e22e75561c3d31dc9b923f0508fa5Anders Carlsson 13486086bbd1799e22e75561c3d31dc9b923f0508fa5Anders Carlsson return Vec; 13496086bbd1799e22e75561c3d31dc9b923f0508fa5Anders Carlsson} 1350