CGExprScalar.cpp revision 0d504c1da852e58ff802545c823ecff3b6c654b8
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" 25c89bf69c9289d2b2305f2c267daacc7312391898Chris Lattner#include <cstdarg> 266aad91a43e26118c824d976661077819265d9bc0Ted Kremenek 277f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattnerusing namespace clang; 287f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattnerusing namespace CodeGen; 297f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattnerusing llvm::Value; 307f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 317f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner//===----------------------------------------------------------------------===// 327f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner// Scalar Expression Emitter 337f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner//===----------------------------------------------------------------------===// 347f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 357f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattnerstruct BinOpInfo { 367f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *LHS; 377f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *RHS; 381f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner QualType Ty; // Computation Type. 397f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner const BinaryOperator *E; 407f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner}; 417f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 427f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattnernamespace { 437f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattnerclass VISIBILITY_HIDDEN ScalarExprEmitter 447f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner : public StmtVisitor<ScalarExprEmitter, Value*> { 457f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner CodeGenFunction &CGF; 4685e356825b291f86c6e926638914222b834b71a3Chris Lattner llvm::IRBuilder<> &Builder; 472b94fe35edf951a14ecd32b21f7ebcc2e3754c67Chris Lattner 487f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattnerpublic: 497f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 502b94fe35edf951a14ecd32b21f7ebcc2e3754c67Chris Lattner ScalarExprEmitter(CodeGenFunction &cgf) : CGF(cgf), 51ed7c618f849e2541b1d0288c43154937652c5b15Daniel Dunbar Builder(CGF.Builder) { 527f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 537f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 547f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner //===--------------------------------------------------------------------===// 557f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Utilities 567f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner //===--------------------------------------------------------------------===// 577f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 587f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner const llvm::Type *ConvertType(QualType T) { return CGF.ConvertType(T); } 597f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner LValue EmitLValue(const Expr *E) { return CGF.EmitLValue(E); } 607f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 617f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *EmitLoadOfLValue(LValue LV, QualType T) { 629b65551d0b387a7597fb39356a4d8ef10046445eChris Lattner return CGF.EmitLoadOfLValue(LV, T).getScalarVal(); 637f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 647f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 657f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner /// EmitLoadOfLValue - Given an expression with complex type that represents a 667f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner /// value l-value, this method emits the address of the l-value, then loads 677f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner /// and returns the result. 687f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *EmitLoadOfLValue(const Expr *E) { 697f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // FIXME: Volatile 707f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return EmitLoadOfLValue(EmitLValue(E), E->getType()); 717f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 727f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 739abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner /// EmitConversionToBool - Convert the specified expression value to a 743420d0de2c52fedf771d7ef20522f6080233e377Chris Lattner /// boolean (i1) truth value. This is equivalent to "Val != 0". 759abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner Value *EmitConversionToBool(Value *Src, QualType DstTy); 769abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner 773707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner /// EmitScalarConversion - Emit a conversion from the specified type to the 783707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner /// specified destination type, both of which are LLVM scalar types. 794f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner Value *EmitScalarConversion(Value *Src, QualType SrcTy, QualType DstTy); 804f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner 814f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner /// EmitComplexToScalarConversion - Emit a conversion from the specified 824f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner /// complex type to the specified destination type, where the destination 834f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner /// type is an LLVM scalar type. 844f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner Value *EmitComplexToScalarConversion(CodeGenFunction::ComplexPairTy Src, 854f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner QualType SrcTy, QualType DstTy); 863707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner 877f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner //===--------------------------------------------------------------------===// 887f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Visitor Methods 897f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner //===--------------------------------------------------------------------===// 907f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 917f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitStmt(Stmt *S) { 927a9d49fd2bfac00e905b361ba76d26ab5b6c3b09Ted Kremenek S->dump(CGF.getContext().getSourceManager()); 937f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner assert(0 && "Stmt can't have complex result type!"); 947f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return 0; 957f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 967f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitExpr(Expr *S); 977f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitParenExpr(ParenExpr *PE) { return Visit(PE->getSubExpr()); } 987f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 997f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Leaves. 1007f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitIntegerLiteral(const IntegerLiteral *E) { 1017f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return llvm::ConstantInt::get(E->getValue()); 1027f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 1037f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitFloatingLiteral(const FloatingLiteral *E) { 10459138ba7ce960888433546639deb45e2e03f8857Chris Lattner return llvm::ConstantFP::get(E->getValue()); 1057f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 1067f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitCharacterLiteral(const CharacterLiteral *E) { 1077f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return llvm::ConstantInt::get(ConvertType(E->getType()), E->getValue()); 108e7579b57eb3eabfd3545b86320fb67466730e9fcNate Begeman } 109e7579b57eb3eabfd3545b86320fb67466730e9fcNate Begeman Value *VisitCXXBoolLiteralExpr(const CXXBoolLiteralExpr *E) { 110e7579b57eb3eabfd3545b86320fb67466730e9fcNate Begeman return llvm::ConstantInt::get(ConvertType(E->getType()), E->getValue()); 1117f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 1127267f7832e5f0c7f951765e201c5a2650eb1637bArgyrios Kyrtzidis Value *VisitCXXZeroInitValueExpr(const CXXZeroInitValueExpr *E) { 1137267f7832e5f0c7f951765e201c5a2650eb1637bArgyrios Kyrtzidis return llvm::Constant::getNullValue(ConvertType(E->getType())); 1147267f7832e5f0c7f951765e201c5a2650eb1637bArgyrios Kyrtzidis } 1157f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitTypesCompatibleExpr(const TypesCompatibleExpr *E) { 1167f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return llvm::ConstantInt::get(ConvertType(E->getType()), 117ec0550fa3653d46560bf4484a2e988329c228e39Steve Naroff CGF.getContext().typesAreCompatible( 118ec0550fa3653d46560bf4484a2e988329c228e39Steve Naroff E->getArgType1(), E->getArgType2())); 1197f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 1207f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitSizeOfAlignOfTypeExpr(const SizeOfAlignOfTypeExpr *E) { 1217f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return EmitSizeAlignOf(E->getArgumentType(), E->getType(), E->isSizeOf()); 1227f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 1230ffb125996336fc7602b162c0a9e392f1a93060fDaniel Dunbar Value *VisitAddrLabelExpr(const AddrLabelExpr *E) { 12454d19091a809d30a5e6e352fda53377d69ebda66Daniel Dunbar llvm::Value *V = 12554d19091a809d30a5e6e352fda53377d69ebda66Daniel Dunbar llvm::ConstantInt::get(llvm::Type::Int32Ty, 12654d19091a809d30a5e6e352fda53377d69ebda66Daniel Dunbar CGF.GetIDForAddrOfLabel(E->getLabel())); 12754d19091a809d30a5e6e352fda53377d69ebda66Daniel Dunbar 12854d19091a809d30a5e6e352fda53377d69ebda66Daniel Dunbar return Builder.CreateIntToPtr(V, ConvertType(E->getType())); 1290ffb125996336fc7602b162c0a9e392f1a93060fDaniel Dunbar } 1307f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 1317f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // l-values. 1327f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitDeclRefExpr(DeclRefExpr *E) { 1337f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner if (const EnumConstantDecl *EC = dyn_cast<EnumConstantDecl>(E->getDecl())) 1347f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return llvm::ConstantInt::get(EC->getInitVal()); 1357f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return EmitLoadOfLValue(E); 1367f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 1379c3fc703b29a31d40bcf5027dbb4784dd393804eDaniel Dunbar Value *VisitObjCSelectorExpr(ObjCSelectorExpr *E) { 1389c3fc703b29a31d40bcf5027dbb4784dd393804eDaniel Dunbar return CGF.EmitObjCSelectorExpr(E); 1399c3fc703b29a31d40bcf5027dbb4784dd393804eDaniel Dunbar } 1409c3fc703b29a31d40bcf5027dbb4784dd393804eDaniel Dunbar Value *VisitObjCProtocolExpr(ObjCProtocolExpr *E) { 1419c3fc703b29a31d40bcf5027dbb4784dd393804eDaniel Dunbar return CGF.EmitObjCProtocolExpr(E); 1429c3fc703b29a31d40bcf5027dbb4784dd393804eDaniel Dunbar } 1439c3fc703b29a31d40bcf5027dbb4784dd393804eDaniel Dunbar Value *VisitObjCIvarRefExpr(ObjCIvarRefExpr *E) { 1449c3fc703b29a31d40bcf5027dbb4784dd393804eDaniel Dunbar return EmitLoadOfLValue(E); 1459c3fc703b29a31d40bcf5027dbb4784dd393804eDaniel Dunbar } 1460a04d77bde7e3a661c2b41b60630d125d09ed6efDaniel Dunbar Value *VisitObjCPropertyRefExpr(ObjCPropertyRefExpr *E) { 14785c59edda02df48fae8dc85049743319bc6e7e89Daniel Dunbar return EmitLoadOfLValue(E); 1489c3fc703b29a31d40bcf5027dbb4784dd393804eDaniel Dunbar } 1499c3fc703b29a31d40bcf5027dbb4784dd393804eDaniel Dunbar Value *VisitObjCMessageExpr(ObjCMessageExpr *E) { 1509c3fc703b29a31d40bcf5027dbb4784dd393804eDaniel Dunbar return CGF.EmitObjCMessageExpr(E).getScalarVal(); 1510a04d77bde7e3a661c2b41b60630d125d09ed6efDaniel Dunbar } 1520a04d77bde7e3a661c2b41b60630d125d09ed6efDaniel Dunbar 1537f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitArraySubscriptExpr(ArraySubscriptExpr *E); 154d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman Value *VisitShuffleVectorExpr(ShuffleVectorExpr *E); 1557f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitMemberExpr(Expr *E) { return EmitLoadOfLValue(E); } 156213541a68a3e137d11d2cefb612c6cdb410d7e8eNate Begeman Value *VisitExtVectorElementExpr(Expr *E) { return EmitLoadOfLValue(E); } 15706e863f2902b8ba55b056308875c19f7ba3dab25Eli Friedman Value *VisitCompoundLiteralExpr(CompoundLiteralExpr *E) { return EmitLoadOfLValue(E); } 1587f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitStringLiteral(Expr *E) { return EmitLValue(E).getAddress(); } 159d9f6910f4ef37c0e8eeee2a01287d9572c3176efChris Lattner Value *VisitPredefinedExpr(Expr *E) { return EmitLValue(E).getAddress(); } 16035634f5ed67966c9f1fde38420e79cc6515cd673Devang Patel 16135634f5ed67966c9f1fde38420e79cc6515cd673Devang Patel Value *VisitInitListExpr(InitListExpr *E) { 1627019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson unsigned NumInitElements = E->getNumInits(); 1637019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson 1647019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson const llvm::VectorType *VType = 165f6884ac7cfc4c5562c0678ad65b3460a38f56e23Anders Carlsson dyn_cast<llvm::VectorType>(ConvertType(E->getType())); 166f6884ac7cfc4c5562c0678ad65b3460a38f56e23Anders Carlsson 167f6884ac7cfc4c5562c0678ad65b3460a38f56e23Anders Carlsson // We have a scalar in braces. Just use the first element. 168f6884ac7cfc4c5562c0678ad65b3460a38f56e23Anders Carlsson if (!VType) 169f6884ac7cfc4c5562c0678ad65b3460a38f56e23Anders Carlsson return Visit(E->getInit(0)); 1707019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson 1717019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson unsigned NumVectorElements = VType->getNumElements(); 1727019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson const llvm::Type *ElementType = VType->getElementType(); 1737019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson 1747019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson // Emit individual vector element stores. 1757019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson llvm::Value *V = llvm::UndefValue::get(VType); 1767019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson 177222d2c8b7886e37ba22f0b25ac7a6552f7cc8492Anders Carlsson // Emit initializers 178222d2c8b7886e37ba22f0b25ac7a6552f7cc8492Anders Carlsson unsigned i; 179222d2c8b7886e37ba22f0b25ac7a6552f7cc8492Anders Carlsson for (i = 0; i < NumInitElements; ++i) { 180a83cc33195c7d1fa31d6809416eaa4c3ebf036ebDevang Patel Value *NewV = Visit(E->getInit(i)); 181a83cc33195c7d1fa31d6809416eaa4c3ebf036ebDevang Patel Value *Idx = llvm::ConstantInt::get(llvm::Type::Int32Ty, i); 182a83cc33195c7d1fa31d6809416eaa4c3ebf036ebDevang Patel V = Builder.CreateInsertElement(V, NewV, Idx); 18335634f5ed67966c9f1fde38420e79cc6515cd673Devang Patel } 1847019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson 1857019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson // Emit remaining default initializers 1867019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson for (/* Do not initialize i*/; i < NumVectorElements; ++i) { 1877019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson Value *Idx = llvm::ConstantInt::get(llvm::Type::Int32Ty, i); 1887019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson llvm::Value *NewV = llvm::Constant::getNullValue(ElementType); 1897019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson V = Builder.CreateInsertElement(V, NewV, Idx); 1907019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson } 1917019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson 192a83cc33195c7d1fa31d6809416eaa4c3ebf036ebDevang Patel return V; 19335634f5ed67966c9f1fde38420e79cc6515cd673Devang Patel } 19404421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner 1957f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitImplicitCastExpr(const ImplicitCastExpr *E); 1967f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitCastExpr(const CastExpr *E) { 1977f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return EmitCastExpr(E->getSubExpr(), E->getType()); 1987f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 1997f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *EmitCastExpr(const Expr *E, QualType T); 2007f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 2017f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitCallExpr(const CallExpr *E) { 2029b65551d0b387a7597fb39356a4d8ef10046445eChris Lattner return CGF.EmitCallExpr(E).getScalarVal(); 2037f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 2048f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar 2053379320c10001d7e1ee5d7e7142c417f797cfe82Chris Lattner Value *VisitStmtExpr(const StmtExpr *E); 2063379320c10001d7e1ee5d7e7142c417f797cfe82Chris Lattner 2077f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Unary Operators. 2087f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitPrePostIncDec(const UnaryOperator *E, bool isInc, bool isPre); 2097f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitUnaryPostDec(const UnaryOperator *E) { 2107f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return VisitPrePostIncDec(E, false, false); 2117f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 2127f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitUnaryPostInc(const UnaryOperator *E) { 2137f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return VisitPrePostIncDec(E, true, false); 2147f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 2157f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitUnaryPreDec(const UnaryOperator *E) { 2167f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return VisitPrePostIncDec(E, false, true); 2177f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 2187f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitUnaryPreInc(const UnaryOperator *E) { 2197f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return VisitPrePostIncDec(E, true, true); 2207f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 2217f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitUnaryAddrOf(const UnaryOperator *E) { 2227f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return EmitLValue(E->getSubExpr()).getAddress(); 2237f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 2247f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitUnaryDeref(const Expr *E) { return EmitLoadOfLValue(E); } 2257f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitUnaryPlus(const UnaryOperator *E) { 2267f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Visit(E->getSubExpr()); 2277f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 2287f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitUnaryMinus (const UnaryOperator *E); 2297f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitUnaryNot (const UnaryOperator *E); 2307f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitUnaryLNot (const UnaryOperator *E); 2317f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitUnarySizeOf (const UnaryOperator *E) { 2327f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return EmitSizeAlignOf(E->getSubExpr()->getType(), E->getType(), true); 2337f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 2347f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitUnaryAlignOf (const UnaryOperator *E) { 2357f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return EmitSizeAlignOf(E->getSubExpr()->getType(), E->getType(), false); 2367f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 2377f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *EmitSizeAlignOf(QualType TypeToSize, QualType RetType, 238bdcd637c29ec1540f912ea6860c88b910e78c329Chris Lattner bool isSizeOf); 23946f93d021a1778442c1c4a53f0b94a68bfae3be5Chris Lattner Value *VisitUnaryReal (const UnaryOperator *E); 24046f93d021a1778442c1c4a53f0b94a68bfae3be5Chris Lattner Value *VisitUnaryImag (const UnaryOperator *E); 2417f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitUnaryExtension(const UnaryOperator *E) { 2427f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Visit(E->getSubExpr()); 2437f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 2445a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson Value *VisitUnaryOffsetOf(const UnaryOperator *E); 24504421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner Value *VisitCXXDefaultArgExpr(CXXDefaultArgExpr *DAE) { 24604421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner return Visit(DAE->getExpr()); 24704421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner } 2485a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson 2497f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Binary Operators. 2507f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *EmitMul(const BinOpInfo &Ops) { 2517f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateMul(Ops.LHS, Ops.RHS, "mul"); 2527f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 2537f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *EmitDiv(const BinOpInfo &Ops); 2547f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *EmitRem(const BinOpInfo &Ops); 2557f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *EmitAdd(const BinOpInfo &Ops); 2567f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *EmitSub(const BinOpInfo &Ops); 2577f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *EmitShl(const BinOpInfo &Ops); 2587f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *EmitShr(const BinOpInfo &Ops); 2597f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *EmitAnd(const BinOpInfo &Ops) { 2607f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateAnd(Ops.LHS, Ops.RHS, "and"); 2617f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 2627f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *EmitXor(const BinOpInfo &Ops) { 2637f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateXor(Ops.LHS, Ops.RHS, "xor"); 2647f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 2657f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *EmitOr (const BinOpInfo &Ops) { 2667f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateOr(Ops.LHS, Ops.RHS, "or"); 2677f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 2687f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 2691f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner BinOpInfo EmitBinOps(const BinaryOperator *E); 2703ccf774256382ef9aa95028eaad82f54a3d0b0adChris Lattner Value *EmitCompoundAssign(const CompoundAssignOperator *E, 2711f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner Value *(ScalarExprEmitter::*F)(const BinOpInfo &)); 2721f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner 2731f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner // Binary operators and binary compound assignment operators. 2741f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner#define HANDLEBINOP(OP) \ 2753ccf774256382ef9aa95028eaad82f54a3d0b0adChris Lattner Value *VisitBin ## OP(const BinaryOperator *E) { \ 2763ccf774256382ef9aa95028eaad82f54a3d0b0adChris Lattner return Emit ## OP(EmitBinOps(E)); \ 2773ccf774256382ef9aa95028eaad82f54a3d0b0adChris Lattner } \ 2783ccf774256382ef9aa95028eaad82f54a3d0b0adChris Lattner Value *VisitBin ## OP ## Assign(const CompoundAssignOperator *E) { \ 2793ccf774256382ef9aa95028eaad82f54a3d0b0adChris Lattner return EmitCompoundAssign(E, &ScalarExprEmitter::Emit ## OP); \ 2801f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner } 2811f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner HANDLEBINOP(Mul); 2821f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner HANDLEBINOP(Div); 2831f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner HANDLEBINOP(Rem); 2841f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner HANDLEBINOP(Add); 2858c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar HANDLEBINOP(Sub); 2861f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner HANDLEBINOP(Shl); 2871f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner HANDLEBINOP(Shr); 2881f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner HANDLEBINOP(And); 2891f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner HANDLEBINOP(Xor); 2901f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner HANDLEBINOP(Or); 2911f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner#undef HANDLEBINOP 2928c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar 2937f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Comparisons. 2947f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *EmitCompare(const BinaryOperator *E, unsigned UICmpOpc, 2957f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner unsigned SICmpOpc, unsigned FCmpOpc); 2967f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner#define VISITCOMP(CODE, UI, SI, FP) \ 2977f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitBin##CODE(const BinaryOperator *E) { \ 2987f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return EmitCompare(E, llvm::ICmpInst::UI, llvm::ICmpInst::SI, \ 2997f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner llvm::FCmpInst::FP); } 3007f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner VISITCOMP(LT, ICMP_ULT, ICMP_SLT, FCMP_OLT); 3017f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner VISITCOMP(GT, ICMP_UGT, ICMP_SGT, FCMP_OGT); 3027f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner VISITCOMP(LE, ICMP_ULE, ICMP_SLE, FCMP_OLE); 3037f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner VISITCOMP(GE, ICMP_UGE, ICMP_SGE, FCMP_OGE); 3047f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner VISITCOMP(EQ, ICMP_EQ , ICMP_EQ , FCMP_OEQ); 3057f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner VISITCOMP(NE, ICMP_NE , ICMP_NE , FCMP_UNE); 3067f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner#undef VISITCOMP 3077f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 3087f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitBinAssign (const BinaryOperator *E); 3097f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 3107f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitBinLAnd (const BinaryOperator *E); 3117f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitBinLOr (const BinaryOperator *E); 3127f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitBinComma (const BinaryOperator *E); 3137f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 3147f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Other Operators. 3157f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitConditionalOperator(const ConditionalOperator *CO); 3167f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitChooseExpr(ChooseExpr *CE); 317e2ce1d9440186cf3332368291cd884a6e3ae8946Nate Begeman Value *VisitOverloadExpr(OverloadExpr *OE); 3187c50aca2fe36f6daa9bf1c8c428f30e72f96470aAnders Carlsson Value *VisitVAArgExpr(VAArgExpr *VE); 3197f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *VisitObjCStringLiteral(const ObjCStringLiteral *E) { 3207f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return CGF.EmitObjCStringLiteral(E); 3217f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 32285f9bceab1542aafff012d4d28e998f4ba16e362Anders Carlsson Value *VisitObjCEncodeExpr(const ObjCEncodeExpr *E); 3237f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner}; 3247f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} // end anonymous namespace. 3257f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 3267f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner//===----------------------------------------------------------------------===// 3277f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner// Utilities 3287f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner//===----------------------------------------------------------------------===// 3297f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 3309abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner/// EmitConversionToBool - Convert the specified expression value to a 3313420d0de2c52fedf771d7ef20522f6080233e377Chris Lattner/// boolean (i1) truth value. This is equivalent to "Val != 0". 3329abc84e7ac4db891209fe67cc3a8c9690dc886efChris LattnerValue *ScalarExprEmitter::EmitConversionToBool(Value *Src, QualType SrcType) { 3339abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner assert(SrcType->isCanonical() && "EmitScalarConversion strips typedefs"); 3349abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner 3359abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner if (SrcType->isRealFloatingType()) { 3369abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner // Compare against 0.0 for fp scalars. 3379abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner llvm::Value *Zero = llvm::Constant::getNullValue(Src->getType()); 3389abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner return Builder.CreateFCmpUNE(Src, Zero, "tobool"); 3399abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner } 3409abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner 341d1d66bcd6914ff82abdfa88dd25bb0b74cde3b99Daniel Dunbar assert((SrcType->isIntegerType() || isa<llvm::PointerType>(Src->getType())) && 3429abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner "Unknown scalar type to convert"); 3439abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner 3449abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner // Because of the type rules of C, we often end up computing a logical value, 3459abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner // then zero extending it to int, then wanting it as a logical value again. 3469abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner // Optimize this common case. 3479abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner if (llvm::ZExtInst *ZI = dyn_cast<llvm::ZExtInst>(Src)) { 3489abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner if (ZI->getOperand(0)->getType() == llvm::Type::Int1Ty) { 3499abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner Value *Result = ZI->getOperand(0); 350356916ec84826a793b0353e5db0e9a7589b9ec5cEli Friedman // If there aren't any more uses, zap the instruction to save space. 351356916ec84826a793b0353e5db0e9a7589b9ec5cEli Friedman // Note that there can be more uses, for example if this 352356916ec84826a793b0353e5db0e9a7589b9ec5cEli Friedman // is the result of an assignment. 353356916ec84826a793b0353e5db0e9a7589b9ec5cEli Friedman if (ZI->use_empty()) 354356916ec84826a793b0353e5db0e9a7589b9ec5cEli Friedman ZI->eraseFromParent(); 3559abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner return Result; 3569abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner } 3579abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner } 3589abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner 3599abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner // Compare against an integer or pointer null. 3609abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner llvm::Value *Zero = llvm::Constant::getNullValue(Src->getType()); 3619abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner return Builder.CreateICmpNE(Src, Zero, "tobool"); 3629abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner} 3639abc84e7ac4db891209fe67cc3a8c9690dc886efChris Lattner 3643707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner/// EmitScalarConversion - Emit a conversion from the specified type to the 3653707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner/// specified destination type, both of which are LLVM scalar types. 3664f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris LattnerValue *ScalarExprEmitter::EmitScalarConversion(Value *Src, QualType SrcType, 3674f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner QualType DstType) { 3689619662a1d42e2008b865d3459c0677e149dad1bChris Lattner SrcType = CGF.getContext().getCanonicalType(SrcType); 3699619662a1d42e2008b865d3459c0677e149dad1bChris Lattner DstType = CGF.getContext().getCanonicalType(DstType); 3703707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner if (SrcType == DstType) return Src; 371cf289083ab007264fa3ea96d92f133339aee5d2dChris Lattner 372cf289083ab007264fa3ea96d92f133339aee5d2dChris Lattner if (DstType->isVoidType()) return 0; 3733707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner 3743707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner // Handle conversions to bool first, they are special: comparisons against 0. 375ed70f0a53610e5e4d4a62cfc0be48d8c1539b5ffChris Lattner if (DstType->isBooleanType()) 376ed70f0a53610e5e4d4a62cfc0be48d8c1539b5ffChris Lattner return EmitConversionToBool(Src, SrcType); 3773707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner 3783707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner const llvm::Type *DstTy = ConvertType(DstType); 3793707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner 3803707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner // Ignore conversions like int -> uint. 3813707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner if (Src->getType() == DstTy) 3823707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner return Src; 3833707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner 384270cc66683b22d6bb0b4644f5a40f84d45edf119Daniel Dunbar // Handle pointer conversions next: pointers can only be converted 385270cc66683b22d6bb0b4644f5a40f84d45edf119Daniel Dunbar // to/from other pointers and integers. Check for pointer types in 386270cc66683b22d6bb0b4644f5a40f84d45edf119Daniel Dunbar // terms of LLVM, as some native types (like Obj-C id) may map to a 387270cc66683b22d6bb0b4644f5a40f84d45edf119Daniel Dunbar // pointer type. 388270cc66683b22d6bb0b4644f5a40f84d45edf119Daniel Dunbar if (isa<llvm::PointerType>(DstTy)) { 3893707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner // The source value may be an integer, or a pointer. 3903707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner if (isa<llvm::PointerType>(Src->getType())) 3913707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner return Builder.CreateBitCast(Src, DstTy, "conv"); 3923707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner assert(SrcType->isIntegerType() && "Not ptr->ptr or int->ptr conversion?"); 3933707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner return Builder.CreateIntToPtr(Src, DstTy, "conv"); 3943707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner } 3953707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner 396270cc66683b22d6bb0b4644f5a40f84d45edf119Daniel Dunbar if (isa<llvm::PointerType>(Src->getType())) { 3973707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner // Must be an ptr to int cast. 3983707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner assert(isa<llvm::IntegerType>(DstTy) && "not ptr->int?"); 39950b5a30db40322880340e957ad7d6d8d60bb4c5bAnders Carlsson return Builder.CreatePtrToInt(Src, DstTy, "conv"); 4003707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner } 4013707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner 402213541a68a3e137d11d2cefb612c6cdb410d7e8eNate Begeman // A scalar can be splatted to an extended vector of the same element type 403213541a68a3e137d11d2cefb612c6cdb410d7e8eNate Begeman if (DstType->isExtVectorType() && !isa<VectorType>(SrcType) && 4043b1ae004d0ee88fc029dad876ec5695f178ef3f6Chris Lattner cast<llvm::VectorType>(DstTy)->getElementType() == Src->getType()) 4054119d1aeca8016654d381ce079864058d1709571Nate Begeman return CGF.EmitVector(&Src, DstType->getAsVectorType()->getNumElements(), 4064119d1aeca8016654d381ce079864058d1709571Nate Begeman true); 4074119d1aeca8016654d381ce079864058d1709571Nate Begeman 4083b1ae004d0ee88fc029dad876ec5695f178ef3f6Chris Lattner // Allow bitcast from vector to integer/fp of the same size. 4097019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson if (isa<llvm::VectorType>(Src->getType()) || 4103b1ae004d0ee88fc029dad876ec5695f178ef3f6Chris Lattner isa<llvm::VectorType>(DstTy)) 4117019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson return Builder.CreateBitCast(Src, DstTy, "conv"); 4127019a9ea3f5d6f8cdf5e2e31f74b4df53e3ffcddAnders Carlsson 4133707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner // Finally, we have the arithmetic types: real int/float. 4143707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner if (isa<llvm::IntegerType>(Src->getType())) { 4153707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner bool InputSigned = SrcType->isSignedIntegerType(); 416b5ce097bb741733e24efd7803f29849be227f8ceAnders Carlsson if (isa<llvm::IntegerType>(DstTy)) 417b5ce097bb741733e24efd7803f29849be227f8ceAnders Carlsson return Builder.CreateIntCast(Src, DstTy, InputSigned, "conv"); 418b5ce097bb741733e24efd7803f29849be227f8ceAnders Carlsson else if (InputSigned) 419b5ce097bb741733e24efd7803f29849be227f8ceAnders Carlsson return Builder.CreateSIToFP(Src, DstTy, "conv"); 420b5ce097bb741733e24efd7803f29849be227f8ceAnders Carlsson else 421b5ce097bb741733e24efd7803f29849be227f8ceAnders Carlsson return Builder.CreateUIToFP(Src, DstTy, "conv"); 4223707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner } 4233707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner 4243707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner assert(Src->getType()->isFloatingPoint() && "Unknown real conversion"); 4253707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner if (isa<llvm::IntegerType>(DstTy)) { 426b5ce097bb741733e24efd7803f29849be227f8ceAnders Carlsson if (DstType->isSignedIntegerType()) 427b5ce097bb741733e24efd7803f29849be227f8ceAnders Carlsson return Builder.CreateFPToSI(Src, DstTy, "conv"); 428b5ce097bb741733e24efd7803f29849be227f8ceAnders Carlsson else 429b5ce097bb741733e24efd7803f29849be227f8ceAnders Carlsson return Builder.CreateFPToUI(Src, DstTy, "conv"); 4303707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner } 4313707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner 4323707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner assert(DstTy->isFloatingPoint() && "Unknown real conversion"); 433b5ce097bb741733e24efd7803f29849be227f8ceAnders Carlsson if (DstTy->getTypeID() < Src->getType()->getTypeID()) 434b5ce097bb741733e24efd7803f29849be227f8ceAnders Carlsson return Builder.CreateFPTrunc(Src, DstTy, "conv"); 435b5ce097bb741733e24efd7803f29849be227f8ceAnders Carlsson else 436b5ce097bb741733e24efd7803f29849be227f8ceAnders Carlsson return Builder.CreateFPExt(Src, DstTy, "conv"); 4373707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner} 4383707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner 4394f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner/// EmitComplexToScalarConversion - Emit a conversion from the specified 4404f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner/// complex type to the specified destination type, where the destination 4414f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner/// type is an LLVM scalar type. 4424f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris LattnerValue *ScalarExprEmitter:: 4434f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris LattnerEmitComplexToScalarConversion(CodeGenFunction::ComplexPairTy Src, 4444f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner QualType SrcTy, QualType DstTy) { 445ed70f0a53610e5e4d4a62cfc0be48d8c1539b5ffChris Lattner // Get the source element type. 4469619662a1d42e2008b865d3459c0677e149dad1bChris Lattner SrcTy = SrcTy->getAsComplexType()->getElementType(); 447ed70f0a53610e5e4d4a62cfc0be48d8c1539b5ffChris Lattner 448ed70f0a53610e5e4d4a62cfc0be48d8c1539b5ffChris Lattner // Handle conversions to bool first, they are special: comparisons against 0. 449ed70f0a53610e5e4d4a62cfc0be48d8c1539b5ffChris Lattner if (DstTy->isBooleanType()) { 450ed70f0a53610e5e4d4a62cfc0be48d8c1539b5ffChris Lattner // Complex != 0 -> (Real != 0) | (Imag != 0) 451ed70f0a53610e5e4d4a62cfc0be48d8c1539b5ffChris Lattner Src.first = EmitScalarConversion(Src.first, SrcTy, DstTy); 452ed70f0a53610e5e4d4a62cfc0be48d8c1539b5ffChris Lattner Src.second = EmitScalarConversion(Src.second, SrcTy, DstTy); 453ed70f0a53610e5e4d4a62cfc0be48d8c1539b5ffChris Lattner return Builder.CreateOr(Src.first, Src.second, "tobool"); 454ed70f0a53610e5e4d4a62cfc0be48d8c1539b5ffChris Lattner } 455ed70f0a53610e5e4d4a62cfc0be48d8c1539b5ffChris Lattner 4564f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner // C99 6.3.1.7p2: "When a value of complex type is converted to a real type, 4574f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner // the imaginary part of the complex value is discarded and the value of the 4584f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner // real part is converted according to the conversion rules for the 4594f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner // corresponding real type. 4604f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner return EmitScalarConversion(Src.first, SrcTy, DstTy); 4614f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner} 4624f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner 4634f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner 4647f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner//===----------------------------------------------------------------------===// 4657f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner// Visitor Methods 4667f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner//===----------------------------------------------------------------------===// 4677f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 4687f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::VisitExpr(Expr *E) { 469488e993a135ce700b982bf099c3d6b856301d642Daniel Dunbar CGF.ErrorUnsupported(E, "scalar expression"); 4707f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner if (E->getType()->isVoidType()) 4717f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return 0; 4727f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return llvm::UndefValue::get(CGF.ConvertType(E->getType())); 4737f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 4747f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 475d38617c8a50f9729c254ab76cd359af797c6739bEli FriedmanValue *ScalarExprEmitter::VisitShuffleVectorExpr(ShuffleVectorExpr *E) { 476d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman llvm::SmallVector<llvm::Constant*, 32> indices; 477d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman for (unsigned i = 2; i < E->getNumSubExprs(); i++) { 478d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman indices.push_back(cast<llvm::Constant>(CGF.EmitScalarExpr(E->getExpr(i)))); 479d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman } 480d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman Value* V1 = CGF.EmitScalarExpr(E->getExpr(0)); 481d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman Value* V2 = CGF.EmitScalarExpr(E->getExpr(1)); 482d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman Value* SV = llvm::ConstantVector::get(indices.begin(), indices.size()); 483d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman return Builder.CreateShuffleVector(V1, V2, SV, "shuffle"); 484d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman} 485d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman 4867f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::VisitArraySubscriptExpr(ArraySubscriptExpr *E) { 4877f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Emit subscript expressions in rvalue context's. For most cases, this just 4887f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // loads the lvalue formed by the subscript expr. However, we have to be 4897f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // careful, because the base of a vector subscript is occasionally an rvalue, 4907f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // so we can't get it as an lvalue. 4917f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner if (!E->getBase()->getType()->isVectorType()) 4927f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return EmitLoadOfLValue(E); 4937f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 4947f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Handle the vector case. The base must be a vector, the index must be an 4957f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // integer value. 4967f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *Base = Visit(E->getBase()); 4977f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *Idx = Visit(E->getIdx()); 4987f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 4997f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // FIXME: Convert Idx to i32 type. 5007f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateExtractElement(Base, Idx, "vecext"); 5017f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 5027f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 5037f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner/// VisitImplicitCastExpr - Implicit casts are the same as normal casts, but 5047f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner/// also handle things like function to pointer-to-function decay, and array to 5057f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner/// pointer decay. 5067f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::VisitImplicitCastExpr(const ImplicitCastExpr *E) { 5077f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner const Expr *Op = E->getSubExpr(); 5087f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 5097f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // If this is due to array->pointer conversion, emit the array expression as 5107f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // an l-value. 5117f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner if (Op->getType()->isArrayType()) { 5127f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // FIXME: For now we assume that all source arrays map to LLVM arrays. This 5137f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // will not true when we add support for VLAs. 5144f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner Value *V = EmitLValue(Op).getAddress(); // Bitfields can't be arrays. 5157f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 516662174c82ef46b19a2329c7d37208e1d12dfb7b3Daniel Dunbar if (!(isa<llvm::PointerType>(V->getType()) && 517662174c82ef46b19a2329c7d37208e1d12dfb7b3Daniel Dunbar isa<llvm::ArrayType>(cast<llvm::PointerType>(V->getType()) 518662174c82ef46b19a2329c7d37208e1d12dfb7b3Daniel Dunbar ->getElementType()))) { 51990df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar CGF.ErrorUnsupported(E, "variable-length array cast", true); 520662174c82ef46b19a2329c7d37208e1d12dfb7b3Daniel Dunbar if (E->getType()->isVoidType()) 521662174c82ef46b19a2329c7d37208e1d12dfb7b3Daniel Dunbar return 0; 522662174c82ef46b19a2329c7d37208e1d12dfb7b3Daniel Dunbar return llvm::UndefValue::get(CGF.ConvertType(E->getType())); 523662174c82ef46b19a2329c7d37208e1d12dfb7b3Daniel Dunbar } 52436b6a0a63e87803a85080c639ad8b61e8bb5f9eeChris Lattner V = Builder.CreateStructGEP(V, 0, "arraydecay"); 525a9e6372208ad77eb2cae639a8a17c86551ac1937Chris Lattner 526a9e6372208ad77eb2cae639a8a17c86551ac1937Chris Lattner // The resultant pointer type can be implicitly casted to other pointer 527f31627f676374812d0355d7e34fd2e940b400757Chris Lattner // types as well (e.g. void*) and can be implicitly converted to integer. 528f31627f676374812d0355d7e34fd2e940b400757Chris Lattner const llvm::Type *DestTy = ConvertType(E->getType()); 529f31627f676374812d0355d7e34fd2e940b400757Chris Lattner if (V->getType() != DestTy) { 530f31627f676374812d0355d7e34fd2e940b400757Chris Lattner if (isa<llvm::PointerType>(DestTy)) 531f31627f676374812d0355d7e34fd2e940b400757Chris Lattner V = Builder.CreateBitCast(V, DestTy, "ptrconv"); 532f31627f676374812d0355d7e34fd2e940b400757Chris Lattner else { 533f31627f676374812d0355d7e34fd2e940b400757Chris Lattner assert(isa<llvm::IntegerType>(DestTy) && "Unknown array decay"); 534f31627f676374812d0355d7e34fd2e940b400757Chris Lattner V = Builder.CreatePtrToInt(V, DestTy, "ptrconv"); 535f31627f676374812d0355d7e34fd2e940b400757Chris Lattner } 536f31627f676374812d0355d7e34fd2e940b400757Chris Lattner } 537a9e6372208ad77eb2cae639a8a17c86551ac1937Chris Lattner return V; 538a9e6372208ad77eb2cae639a8a17c86551ac1937Chris Lattner 539793680ed8104bf088d1b382b963a8badcb3f07deAnders Carlsson } else if (E->getType()->isReferenceType()) { 540793680ed8104bf088d1b382b963a8badcb3f07deAnders Carlsson return EmitLValue(Op).getAddress(); 5417f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 5427f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 5437f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return EmitCastExpr(Op, E->getType()); 5447f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 5457f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 5467f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 5477f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner// VisitCastExpr - Emit code for an explicit or implicit cast. Implicit casts 5487f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner// have to handle a more broad range of conversions than explicit casts, as they 5497f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner// handle things like function to ptr-to-function decay etc. 5507f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::EmitCastExpr(const Expr *E, QualType DestTy) { 55158a2e944faa16f1f61439acd2e71b19f50189511Chris Lattner // Handle cases where the source is an non-complex type. 55219a1d7c646729eb858b15583e647262a22de3637Chris Lattner 55319a1d7c646729eb858b15583e647262a22de3637Chris Lattner if (!CGF.hasAggregateLLVMType(E->getType())) { 5543707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner Value *Src = Visit(const_cast<Expr*>(E)); 5553707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner 5563707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner // Use EmitScalarConversion to perform the conversion. 5573707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner return EmitScalarConversion(Src, E->getType(), DestTy); 5583707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner } 55919a1d7c646729eb858b15583e647262a22de3637Chris Lattner 5609b2dc287177394a8f73833e2ad4f7ca8cd6f22bbChris Lattner if (E->getType()->isAnyComplexType()) { 56119a1d7c646729eb858b15583e647262a22de3637Chris Lattner // Handle cases where the source is a complex type. 56219a1d7c646729eb858b15583e647262a22de3637Chris Lattner return EmitComplexToScalarConversion(CGF.EmitComplexExpr(E), E->getType(), 56319a1d7c646729eb858b15583e647262a22de3637Chris Lattner DestTy); 56419a1d7c646729eb858b15583e647262a22de3637Chris Lattner } 56510b00cfe6422906b223724048b9b2123968d3baaChris Lattner 56619a1d7c646729eb858b15583e647262a22de3637Chris Lattner // Okay, this is a cast from an aggregate. It must be a cast to void. Just 56719a1d7c646729eb858b15583e647262a22de3637Chris Lattner // evaluate the result and return. 56819a1d7c646729eb858b15583e647262a22de3637Chris Lattner CGF.EmitAggExpr(E, 0, false); 56919a1d7c646729eb858b15583e647262a22de3637Chris Lattner return 0; 5707f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 5717f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 5723379320c10001d7e1ee5d7e7142c417f797cfe82Chris LattnerValue *ScalarExprEmitter::VisitStmtExpr(const StmtExpr *E) { 57391d723da7b68be5245c3ac58aa2a36d04658cfb8Chris Lattner return CGF.EmitCompoundStmt(*E->getSubStmt(), 57491d723da7b68be5245c3ac58aa2a36d04658cfb8Chris Lattner !E->getType()->isVoidType()).getScalarVal(); 5753379320c10001d7e1ee5d7e7142c417f797cfe82Chris Lattner} 5763379320c10001d7e1ee5d7e7142c417f797cfe82Chris Lattner 5773379320c10001d7e1ee5d7e7142c417f797cfe82Chris Lattner 5787f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner//===----------------------------------------------------------------------===// 5797f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner// Unary Operators 5807f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner//===----------------------------------------------------------------------===// 5817f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 5827f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::VisitPrePostIncDec(const UnaryOperator *E, 583dfce2a51a78455c915722bc05f07c41e600220c9Chris Lattner bool isInc, bool isPre) { 5847f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner LValue LV = EmitLValue(E->getSubExpr()); 5857f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // FIXME: Handle volatile! 586e936cc8890b94e83f530453c8c9167fb5de9b5faChris Lattner Value *InVal = CGF.EmitLoadOfLValue(LV, // false 5879b65551d0b387a7597fb39356a4d8ef10046445eChris Lattner E->getSubExpr()->getType()).getScalarVal(); 5887f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 5897f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner int AmountVal = isInc ? 1 : -1; 5907f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 5917f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *NextVal; 592e936cc8890b94e83f530453c8c9167fb5de9b5faChris Lattner if (isa<llvm::PointerType>(InVal->getType())) { 593e936cc8890b94e83f530453c8c9167fb5de9b5faChris Lattner // FIXME: This isn't right for VLAs. 594e936cc8890b94e83f530453c8c9167fb5de9b5faChris Lattner NextVal = llvm::ConstantInt::get(llvm::Type::Int32Ty, AmountVal); 59536b6a0a63e87803a85080c639ad8b61e8bb5f9eeChris Lattner NextVal = Builder.CreateGEP(InVal, NextVal, "ptrincdec"); 596e936cc8890b94e83f530453c8c9167fb5de9b5faChris Lattner } else { 597e936cc8890b94e83f530453c8c9167fb5de9b5faChris Lattner // Add the inc/dec to the real part. 598e936cc8890b94e83f530453c8c9167fb5de9b5faChris Lattner if (isa<llvm::IntegerType>(InVal->getType())) 599e936cc8890b94e83f530453c8c9167fb5de9b5faChris Lattner NextVal = llvm::ConstantInt::get(InVal->getType(), AmountVal); 600ca2617c0e1f87c9da4d9aa3db4ea854ee2f6a1daChris Lattner else if (InVal->getType() == llvm::Type::FloatTy) 601e9b8c0a38549692f1b8f688c05c35442fc620865Devang Patel NextVal = 60259138ba7ce960888433546639deb45e2e03f8857Chris Lattner llvm::ConstantFP::get(llvm::APFloat(static_cast<float>(AmountVal))); 60325ddea7f7835c4b1804e458a5c866cde0097430aChris Lattner else if (InVal->getType() == llvm::Type::DoubleTy) 604e9b8c0a38549692f1b8f688c05c35442fc620865Devang Patel NextVal = 60559138ba7ce960888433546639deb45e2e03f8857Chris Lattner llvm::ConstantFP::get(llvm::APFloat(static_cast<double>(AmountVal))); 60625ddea7f7835c4b1804e458a5c866cde0097430aChris Lattner else { 60725ddea7f7835c4b1804e458a5c866cde0097430aChris Lattner llvm::APFloat F(static_cast<float>(AmountVal)); 608ee5a700af3fe9ae1a639c271f093f40677dddc04Dale Johannesen bool ignored; 609ee5a700af3fe9ae1a639c271f093f40677dddc04Dale Johannesen F.convert(CGF.Target.getLongDoubleFormat(), llvm::APFloat::rmTowardZero, 610ee5a700af3fe9ae1a639c271f093f40677dddc04Dale Johannesen &ignored); 61125ddea7f7835c4b1804e458a5c866cde0097430aChris Lattner NextVal = llvm::ConstantFP::get(F); 612ca2617c0e1f87c9da4d9aa3db4ea854ee2f6a1daChris Lattner } 613e936cc8890b94e83f530453c8c9167fb5de9b5faChris Lattner NextVal = Builder.CreateAdd(InVal, NextVal, isInc ? "inc" : "dec"); 614e936cc8890b94e83f530453c8c9167fb5de9b5faChris Lattner } 6157f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 6167f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Store the updated result through the lvalue. 6177f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner CGF.EmitStoreThroughLValue(RValue::get(NextVal), LV, 6187f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner E->getSubExpr()->getType()); 6197f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 6207f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // If this is a postinc, return the value read from memory, otherwise use the 6217f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // updated value. 6227f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return isPre ? NextVal : InVal; 6237f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 6247f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 6257f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 6267f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::VisitUnaryMinus(const UnaryOperator *E) { 6277f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *Op = Visit(E->getSubExpr()); 6287f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateNeg(Op, "neg"); 6297f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 6307f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 6317f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::VisitUnaryNot(const UnaryOperator *E) { 6327f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *Op = Visit(E->getSubExpr()); 6337f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateNot(Op, "neg"); 6347f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 6357f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 6367f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::VisitUnaryLNot(const UnaryOperator *E) { 6377f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Compare operand to zero. 6387f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *BoolVal = CGF.EvaluateExprAsBool(E->getSubExpr()); 6397f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 6407f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Invert value. 6417f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // TODO: Could dynamically modify easy computations here. For example, if 6427f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // the operand is an icmp ne, turn into icmp eq. 6437f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner BoolVal = Builder.CreateNot(BoolVal, "lnot"); 6447f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 6457f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // ZExt result to int. 6467f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateZExt(BoolVal, CGF.LLVMIntTy, "lnot.ext"); 6477f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 6487f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 6497f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner/// EmitSizeAlignOf - Return the size or alignment of the 'TypeToSize' type as 6507f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner/// an integer (RetType). 6517f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::EmitSizeAlignOf(QualType TypeToSize, 65246f93d021a1778442c1c4a53f0b94a68bfae3be5Chris Lattner QualType RetType,bool isSizeOf){ 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 6579140845f95d7dedd410d93c3390dd00104c76b0aDaniel Dunbar // sizeof(void) and __alignof__(void) = 1 as a gcc extension. Also 6589140845f95d7dedd410d93c3390dd00104c76b0aDaniel Dunbar // for function types. 6598ee6a63ba1cc2455f4b3e9111091908d50796818Daniel Dunbar // FIXME: what is alignof a function type in gcc? 6609140845f95d7dedd410d93c3390dd00104c76b0aDaniel Dunbar if (TypeToSize->isVoidType() || TypeToSize->isFunctionType()) 661a269ebfd91c4fa47e051fa1fa904833a022fe025Chris Lattner return llvm::ConstantInt::get(llvm::APInt(ResultWidth, 1)); 662a269ebfd91c4fa47e051fa1fa904833a022fe025Chris Lattner 6637f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner /// FIXME: This doesn't handle VLAs yet! 66498be4943e8dc4f3905629a7102668960873cf863Chris Lattner std::pair<uint64_t, unsigned> Info = CGF.getContext().getTypeInfo(TypeToSize); 6657f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 6667f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner uint64_t Val = isSizeOf ? Info.first : Info.second; 6677f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Val /= 8; // Return size in bytes, not bits. 6687f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 6697f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return llvm::ConstantInt::get(llvm::APInt(ResultWidth, Val)); 6707f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 6717f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 67246f93d021a1778442c1c4a53f0b94a68bfae3be5Chris LattnerValue *ScalarExprEmitter::VisitUnaryReal(const UnaryOperator *E) { 67346f93d021a1778442c1c4a53f0b94a68bfae3be5Chris Lattner Expr *Op = E->getSubExpr(); 6749b2dc287177394a8f73833e2ad4f7ca8cd6f22bbChris Lattner if (Op->getType()->isAnyComplexType()) 67546f93d021a1778442c1c4a53f0b94a68bfae3be5Chris Lattner return CGF.EmitComplexExpr(Op).first; 67646f93d021a1778442c1c4a53f0b94a68bfae3be5Chris Lattner return Visit(Op); 67746f93d021a1778442c1c4a53f0b94a68bfae3be5Chris Lattner} 67846f93d021a1778442c1c4a53f0b94a68bfae3be5Chris LattnerValue *ScalarExprEmitter::VisitUnaryImag(const UnaryOperator *E) { 67946f93d021a1778442c1c4a53f0b94a68bfae3be5Chris Lattner Expr *Op = E->getSubExpr(); 6809b2dc287177394a8f73833e2ad4f7ca8cd6f22bbChris Lattner if (Op->getType()->isAnyComplexType()) 68146f93d021a1778442c1c4a53f0b94a68bfae3be5Chris Lattner return CGF.EmitComplexExpr(Op).second; 68236f8406db837957b24b926fd657af909e1b12665Chris Lattner 68336f8406db837957b24b926fd657af909e1b12665Chris Lattner // __imag on a scalar returns zero. Emit it the subexpr to ensure side 68436f8406db837957b24b926fd657af909e1b12665Chris Lattner // effects are evaluated. 68536f8406db837957b24b926fd657af909e1b12665Chris Lattner CGF.EmitScalarExpr(Op); 68636f8406db837957b24b926fd657af909e1b12665Chris Lattner return llvm::Constant::getNullValue(ConvertType(E->getType())); 68746f93d021a1778442c1c4a53f0b94a68bfae3be5Chris Lattner} 68846f93d021a1778442c1c4a53f0b94a68bfae3be5Chris Lattner 6895a1deb8d9c0722beae28d693fa137bbb942bd11fAnders CarlssonValue *ScalarExprEmitter::VisitUnaryOffsetOf(const UnaryOperator *E) 6905a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson{ 6915a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson int64_t Val = E->evaluateOffsetOf(CGF.getContext()); 6925a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson 6935a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson assert(E->getType()->isIntegerType() && "Result type must be an integer!"); 6945a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson 69598be4943e8dc4f3905629a7102668960873cf863Chris Lattner uint32_t ResultWidth = 69698be4943e8dc4f3905629a7102668960873cf863Chris Lattner static_cast<uint32_t>(CGF.getContext().getTypeSize(E->getType())); 6975a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson return llvm::ConstantInt::get(llvm::APInt(ResultWidth, Val)); 6985a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson} 69946f93d021a1778442c1c4a53f0b94a68bfae3be5Chris Lattner 7007f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner//===----------------------------------------------------------------------===// 7017f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner// Binary Operators 7027f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner//===----------------------------------------------------------------------===// 7037f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 7047f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerBinOpInfo ScalarExprEmitter::EmitBinOps(const BinaryOperator *E) { 7057f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner BinOpInfo Result; 7067f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Result.LHS = Visit(E->getLHS()); 7077f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Result.RHS = Visit(E->getRHS()); 7081f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner Result.Ty = E->getType(); 7097f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Result.E = E; 7107f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Result; 7117f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 7127f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 7133ccf774256382ef9aa95028eaad82f54a3d0b0adChris LattnerValue *ScalarExprEmitter::EmitCompoundAssign(const CompoundAssignOperator *E, 7141f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner Value *(ScalarExprEmitter::*Func)(const BinOpInfo &)) { 7151f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner QualType LHSTy = E->getLHS()->getType(), RHSTy = E->getRHS()->getType(); 7161f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner 7171f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner BinOpInfo OpInfo; 7181f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner 7191f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner // Load the LHS and RHS operands. 7201f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner LValue LHSLV = EmitLValue(E->getLHS()); 7211f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner OpInfo.LHS = EmitLoadOfLValue(LHSLV, LHSTy); 72204dc76496e869460a1acb7923fc00163c0128b0aChris Lattner 72304dc76496e869460a1acb7923fc00163c0128b0aChris Lattner // Determine the computation type. If the RHS is complex, then this is one of 72404dc76496e869460a1acb7923fc00163c0128b0aChris Lattner // the add/sub/mul/div operators. All of these operators can be computed in 72504dc76496e869460a1acb7923fc00163c0128b0aChris Lattner // with just their real component even though the computation domain really is 72604dc76496e869460a1acb7923fc00163c0128b0aChris Lattner // complex. 72704dc76496e869460a1acb7923fc00163c0128b0aChris Lattner QualType ComputeType = E->getComputationType(); 7281f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner 72904dc76496e869460a1acb7923fc00163c0128b0aChris Lattner // If the computation type is complex, then the RHS is complex. Emit the RHS. 73004dc76496e869460a1acb7923fc00163c0128b0aChris Lattner if (const ComplexType *CT = ComputeType->getAsComplexType()) { 73104dc76496e869460a1acb7923fc00163c0128b0aChris Lattner ComputeType = CT->getElementType(); 73204dc76496e869460a1acb7923fc00163c0128b0aChris Lattner 73304dc76496e869460a1acb7923fc00163c0128b0aChris Lattner // Emit the RHS, only keeping the real component. 73404dc76496e869460a1acb7923fc00163c0128b0aChris Lattner OpInfo.RHS = CGF.EmitComplexExpr(E->getRHS()).first; 73504dc76496e869460a1acb7923fc00163c0128b0aChris Lattner RHSTy = RHSTy->getAsComplexType()->getElementType(); 73604dc76496e869460a1acb7923fc00163c0128b0aChris Lattner } else { 73704dc76496e869460a1acb7923fc00163c0128b0aChris Lattner // Otherwise the RHS is a simple scalar value. 73804dc76496e869460a1acb7923fc00163c0128b0aChris Lattner OpInfo.RHS = Visit(E->getRHS()); 73904dc76496e869460a1acb7923fc00163c0128b0aChris Lattner } 7401f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner 7418c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar QualType LComputeTy, RComputeTy, ResultTy; 7428c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar 7438c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // Compound assignment does not contain enough information about all 7448c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // the types involved for pointer arithmetic cases. Figure it out 7458c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // here for now. 7468c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar if (E->getLHS()->getType()->isPointerType()) { 7478c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // Pointer arithmetic cases: ptr +=,-= int and ptr -= ptr, 7488c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar assert((E->getOpcode() == BinaryOperator::AddAssign || 7498c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar E->getOpcode() == BinaryOperator::SubAssign) && 7508c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar "Invalid compound assignment operator on pointer type."); 7518c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar LComputeTy = E->getLHS()->getType(); 7528c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar 7538c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar if (E->getRHS()->getType()->isPointerType()) { 7548c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // Degenerate case of (ptr -= ptr) allowed by GCC implicit cast 7558c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // extension, the conversion from the pointer difference back to 7568c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // the LHS type is handled at the end. 7578c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar assert(E->getOpcode() == BinaryOperator::SubAssign && 7588c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar "Invalid compound assignment operator on pointer type."); 7598c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar RComputeTy = E->getLHS()->getType(); 7608c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar ResultTy = CGF.getContext().getPointerDiffType(); 7618c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar } else { 7628c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar RComputeTy = E->getRHS()->getType(); 7638c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar ResultTy = LComputeTy; 7648c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar } 7658c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar } else if (E->getRHS()->getType()->isPointerType()) { 7668c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // Degenerate case of (int += ptr) allowed by GCC implicit cast 7678c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // extension. 7688c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar assert(E->getOpcode() == BinaryOperator::AddAssign && 7698c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar "Invalid compound assignment operator on pointer type."); 7708c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar LComputeTy = E->getLHS()->getType(); 7718c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar RComputeTy = E->getRHS()->getType(); 7728c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar ResultTy = RComputeTy; 7738c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar } else { 7748c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar LComputeTy = RComputeTy = ResultTy = ComputeType; 7751f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner } 7768c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar 7778c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // Convert the LHS/RHS values to the computation type. 7788c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar OpInfo.LHS = EmitScalarConversion(OpInfo.LHS, LHSTy, LComputeTy); 7798c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar OpInfo.RHS = EmitScalarConversion(OpInfo.RHS, RHSTy, RComputeTy); 7808c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar OpInfo.Ty = ResultTy; 7811f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner OpInfo.E = E; 7821f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner 7831f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner // Expand the binary operator. 7841f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner Value *Result = (this->*Func)(OpInfo); 7851f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner 7868c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // Convert the result back to the LHS type. 7878c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar Result = EmitScalarConversion(Result, ResultTy, LHSTy); 7881f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner 7891f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner // Store the result value into the LHS lvalue. 7908c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar CGF.EmitStoreThroughLValue(RValue::get(Result), LHSLV, LHSTy); 7911f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner 79285c59edda02df48fae8dc85049743319bc6e7e89Daniel Dunbar // For bitfields, we need the value in the bitfield. Note that 79385c59edda02df48fae8dc85049743319bc6e7e89Daniel Dunbar // property references do not reload their value (even though the 79485c59edda02df48fae8dc85049743319bc6e7e89Daniel Dunbar // setter may have changed it). 7951849128c7d88247d914f05efe4c03907f0932174Eli Friedman // FIXME: This adds an extra bitfield load 7961849128c7d88247d914f05efe4c03907f0932174Eli Friedman if (LHSLV.isBitfield()) 7971849128c7d88247d914f05efe4c03907f0932174Eli Friedman Result = EmitLoadOfLValue(LHSLV, LHSTy); 7981f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner return Result; 7991f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner} 8001f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner 8011f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner 8027f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::EmitDiv(const BinOpInfo &Ops) { 803b3ab8dc7d3b2e24259b990ac4ad75abfd07fa1f9Nate Begeman if (Ops.LHS->getType()->isFPOrFPVector()) 8047f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateFDiv(Ops.LHS, Ops.RHS, "div"); 8051f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner else if (Ops.Ty->isUnsignedIntegerType()) 8067f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateUDiv(Ops.LHS, Ops.RHS, "div"); 8077f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner else 8087f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateSDiv(Ops.LHS, Ops.RHS, "div"); 8097f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 8107f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 8117f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::EmitRem(const BinOpInfo &Ops) { 8127f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Rem in C can't be a floating point type: C99 6.5.5p2. 8131f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner if (Ops.Ty->isUnsignedIntegerType()) 8147f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateURem(Ops.LHS, Ops.RHS, "rem"); 8157f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner else 8167f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateSRem(Ops.LHS, Ops.RHS, "rem"); 8177f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 8187f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 8197f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 8207f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::EmitAdd(const BinOpInfo &Ops) { 8211f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner if (!Ops.Ty->isPointerType()) 8227f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateAdd(Ops.LHS, Ops.RHS, "add"); 8231f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner 8241f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner // FIXME: What about a pointer to a VLA? 8258f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner Value *Ptr, *Idx; 8268f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner Expr *IdxExp; 8278f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner if (isa<llvm::PointerType>(Ops.LHS->getType())) { // pointer + int 8288f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner Ptr = Ops.LHS; 8298f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner Idx = Ops.RHS; 8308f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner IdxExp = Ops.E->getRHS(); 8318f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner } else { // int + pointer 8328f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner Ptr = Ops.RHS; 8338f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner Idx = Ops.LHS; 8348f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner IdxExp = Ops.E->getLHS(); 8358f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner } 8368f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner 8378f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner unsigned Width = cast<llvm::IntegerType>(Idx->getType())->getBitWidth(); 8388f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner if (Width < CGF.LLVMPointerWidth) { 8398f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner // Zero or sign extend the pointer value based on whether the index is 8408f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner // signed or not. 8418f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner const llvm::Type *IdxType = llvm::IntegerType::get(CGF.LLVMPointerWidth); 8429619662a1d42e2008b865d3459c0677e149dad1bChris Lattner if (IdxExp->getType()->isSignedIntegerType()) 8438f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner Idx = Builder.CreateSExt(Idx, IdxType, "idx.ext"); 8448f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner else 8458f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner Idx = Builder.CreateZExt(Idx, IdxType, "idx.ext"); 8468f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner } 8478f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner 8488f925280abe3795ae0fb47f2ba90faea62e26af4Chris Lattner return Builder.CreateGEP(Ptr, Idx, "add.ptr"); 8497f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 8507f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 8517f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::EmitSub(const BinOpInfo &Ops) { 8527f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner if (!isa<llvm::PointerType>(Ops.LHS->getType())) 8537f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateSub(Ops.LHS, Ops.RHS, "sub"); 8541f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner 8558c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar if (!isa<llvm::PointerType>(Ops.RHS->getType())) { 8568c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // pointer - int 8578c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar Value *Idx = Ops.RHS; 8588c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar unsigned Width = cast<llvm::IntegerType>(Idx->getType())->getBitWidth(); 8598c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar if (Width < CGF.LLVMPointerWidth) { 8608c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // Zero or sign extend the pointer value based on whether the index is 8618c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // signed or not. 8628c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar const llvm::Type *IdxType = llvm::IntegerType::get(CGF.LLVMPointerWidth); 8638c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar if (Ops.E->getRHS()->getType()->isSignedIntegerType()) 8648c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar Idx = Builder.CreateSExt(Idx, IdxType, "idx.ext"); 8658c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar else 8668c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar Idx = Builder.CreateZExt(Idx, IdxType, "idx.ext"); 8678c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar } 8688c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar Idx = Builder.CreateNeg(Idx, "sub.ptr.neg"); 8698c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar 8708c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // FIXME: The pointer could point to a VLA. 8718c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // The GNU void* - int case is automatically handled here because 8728c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // our LLVM type for void* is i8*. 8738c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar return Builder.CreateGEP(Ops.LHS, Idx, "sub.ptr"); 874820b03398fdcc8f1f6c60ace55b708e311fa8ce4Daniel Dunbar } else { 8758c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // pointer - pointer 8768c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar Value *LHS = Ops.LHS; 8778c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar Value *RHS = Ops.RHS; 8781f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner 8798c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar const QualType LHSType = Ops.E->getLHS()->getType(); 8808c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar const QualType LHSElementType = LHSType->getAsPointerType()->getPointeeType(); 8818c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar uint64_t ElementSize; 882820b03398fdcc8f1f6c60ace55b708e311fa8ce4Daniel Dunbar 8838c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // Handle GCC extension for pointer arithmetic on void* types. 8848c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar if (LHSElementType->isVoidType()) { 8858c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar ElementSize = 1; 8868c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar } else { 8878c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar ElementSize = CGF.getContext().getTypeSize(LHSElementType) / 8; 8888c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar } 8898c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar 8908c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar const llvm::Type *ResultType = ConvertType(Ops.Ty); 8918c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar LHS = Builder.CreatePtrToInt(LHS, ResultType, "sub.ptr.lhs.cast"); 8928c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar RHS = Builder.CreatePtrToInt(RHS, ResultType, "sub.ptr.rhs.cast"); 8938c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar Value *BytesBetween = Builder.CreateSub(LHS, RHS, "sub.ptr.sub"); 8948c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar 8958c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // HACK: LLVM doesn't have an divide instruction that 'knows' there is no 8968c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // remainder. As such, we handle common power-of-two cases here to generate 8978c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // better code. See PR2247. 8988c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar if (llvm::isPowerOf2_64(ElementSize)) { 8998c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar Value *ShAmt = 9008c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar llvm::ConstantInt::get(ResultType, llvm::Log2_64(ElementSize)); 9018c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar return Builder.CreateAShr(BytesBetween, ShAmt, "sub.ptr.shr"); 9028c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar } 9038c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar 9048c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar // Otherwise, do a full sdiv. 9058c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar Value *BytesPerElt = llvm::ConstantInt::get(ResultType, ElementSize); 9068c6f57c38b1451bb28945876b0d147fd2f26e6d3Daniel Dunbar return Builder.CreateSDiv(BytesBetween, BytesPerElt, "sub.ptr.div"); 9077f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 9087f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 9097f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 9107f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::EmitShl(const BinOpInfo &Ops) { 9117f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // LLVM requires the LHS and RHS to be the same type: promote or truncate the 9127f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // RHS to the same size as the LHS. 9137f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *RHS = Ops.RHS; 9147f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner if (Ops.LHS->getType() != RHS->getType()) 9157f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner RHS = Builder.CreateIntCast(RHS, Ops.LHS->getType(), false, "sh_prom"); 9167f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 9177f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateShl(Ops.LHS, RHS, "shl"); 9187f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 9197f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 9207f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::EmitShr(const BinOpInfo &Ops) { 9217f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // LLVM requires the LHS and RHS to be the same type: promote or truncate the 9227f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // RHS to the same size as the LHS. 9237f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *RHS = Ops.RHS; 9247f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner if (Ops.LHS->getType() != RHS->getType()) 9257f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner RHS = Builder.CreateIntCast(RHS, Ops.LHS->getType(), false, "sh_prom"); 9267f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 9271f1ded9629529085e1673c99fb805e4d9d0b370bChris Lattner if (Ops.Ty->isUnsignedIntegerType()) 9287f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateLShr(Ops.LHS, RHS, "shr"); 9297f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateAShr(Ops.LHS, RHS, "shr"); 9307f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 9317f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 9327f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::EmitCompare(const BinaryOperator *E,unsigned UICmpOpc, 9337f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner unsigned SICmpOpc, unsigned FCmpOpc) { 9344f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner Value *Result; 9357f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner QualType LHSTy = E->getLHS()->getType(); 9367a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman if (!LHSTy->isAnyComplexType() && !LHSTy->isVectorType()) { 9377f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *LHS = Visit(E->getLHS()); 9387f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *RHS = Visit(E->getRHS()); 9397f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 9407f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner if (LHS->getType()->isFloatingPoint()) { 9417a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman Result = Builder.CreateFCmp((llvm::CmpInst::Predicate)FCmpOpc, 9427f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner LHS, RHS, "cmp"); 943ec2c12646aee07bf6bb1b4092d538d5860fd0661Eli Friedman } else if (LHSTy->isSignedIntegerType()) { 944ec2c12646aee07bf6bb1b4092d538d5860fd0661Eli Friedman Result = Builder.CreateICmp((llvm::ICmpInst::Predicate)SICmpOpc, 9457f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner LHS, RHS, "cmp"); 9467f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } else { 947ec2c12646aee07bf6bb1b4092d538d5860fd0661Eli Friedman // Unsigned integers and pointers. 948ec2c12646aee07bf6bb1b4092d538d5860fd0661Eli Friedman Result = Builder.CreateICmp((llvm::ICmpInst::Predicate)UICmpOpc, 9497f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner LHS, RHS, "cmp"); 9507f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 9517a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman } else if (LHSTy->isVectorType()) { 9527a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman Value *LHS = Visit(E->getLHS()); 9537a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman Value *RHS = Visit(E->getRHS()); 9547a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman 9557a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman if (LHS->getType()->isFPOrFPVector()) { 9567a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman Result = Builder.CreateVFCmp((llvm::CmpInst::Predicate)FCmpOpc, 9577a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman LHS, RHS, "cmp"); 9587a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman } else if (LHSTy->isUnsignedIntegerType()) { 9597a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman Result = Builder.CreateVICmp((llvm::CmpInst::Predicate)UICmpOpc, 9607a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman LHS, RHS, "cmp"); 9617a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman } else { 9627a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman // Signed integers and pointers. 9637a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman Result = Builder.CreateVICmp((llvm::CmpInst::Predicate)SICmpOpc, 9647a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman LHS, RHS, "cmp"); 9657a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman } 9667a66d7b6c0d84f8c9c74c687a338cf3cf6b9c808Nate Begeman return Result; 9677f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } else { 9687f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Complex Comparison: can only be an equality comparison. 9697f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner CodeGenFunction::ComplexPairTy LHS = CGF.EmitComplexExpr(E->getLHS()); 9707f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner CodeGenFunction::ComplexPairTy RHS = CGF.EmitComplexExpr(E->getRHS()); 9717f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 9729619662a1d42e2008b865d3459c0677e149dad1bChris Lattner QualType CETy = LHSTy->getAsComplexType()->getElementType(); 9737f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 9744f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner Value *ResultR, *ResultI; 9757f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner if (CETy->isRealFloatingType()) { 9767f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner ResultR = Builder.CreateFCmp((llvm::FCmpInst::Predicate)FCmpOpc, 9777f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner LHS.first, RHS.first, "cmp.r"); 9787f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner ResultI = Builder.CreateFCmp((llvm::FCmpInst::Predicate)FCmpOpc, 9797f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner LHS.second, RHS.second, "cmp.i"); 9807f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } else { 9817f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Complex comparisons can only be equality comparisons. As such, signed 9827f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // and unsigned opcodes are the same. 9837f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner ResultR = Builder.CreateICmp((llvm::ICmpInst::Predicate)UICmpOpc, 9847f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner LHS.first, RHS.first, "cmp.r"); 9857f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner ResultI = Builder.CreateICmp((llvm::ICmpInst::Predicate)UICmpOpc, 9867f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner LHS.second, RHS.second, "cmp.i"); 9877f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 9887f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 9897f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner if (E->getOpcode() == BinaryOperator::EQ) { 9907f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Result = Builder.CreateAnd(ResultR, ResultI, "and.ri"); 9917f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } else { 9927f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner assert(E->getOpcode() == BinaryOperator::NE && 9937f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner "Complex comparison other than == or != ?"); 9947f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Result = Builder.CreateOr(ResultR, ResultI, "or.ri"); 9957f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 9967f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner } 9977f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 9987f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // ZExt result to int. 9997f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateZExt(Result, CGF.LLVMIntTy, "cmp.ext"); 10007f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 10017f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 10027f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::VisitBinAssign(const BinaryOperator *E) { 10037f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner LValue LHS = EmitLValue(E->getLHS()); 10047f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *RHS = Visit(E->getRHS()); 10057f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 10067f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Store the value into the LHS. 10077f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // FIXME: Volatility! 10087f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner CGF.EmitStoreThroughLValue(RValue::get(RHS), LHS, E->getType()); 10091849128c7d88247d914f05efe4c03907f0932174Eli Friedman 101085c59edda02df48fae8dc85049743319bc6e7e89Daniel Dunbar // For bitfields, we need the value in the bitfield. Note that 101185c59edda02df48fae8dc85049743319bc6e7e89Daniel Dunbar // property references do not reload their value (even though the 101285c59edda02df48fae8dc85049743319bc6e7e89Daniel Dunbar // setter may have changed it). 10131849128c7d88247d914f05efe4c03907f0932174Eli Friedman // FIXME: This adds an extra bitfield load 10141849128c7d88247d914f05efe4c03907f0932174Eli Friedman if (LHS.isBitfield()) 10151849128c7d88247d914f05efe4c03907f0932174Eli Friedman return EmitLoadOfLValue(LHS, E->getLHS()->getType()); 101685c59edda02df48fae8dc85049743319bc6e7e89Daniel Dunbar 10177f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Return the RHS. 10187f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return RHS; 10197f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 10207f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 10217f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::VisitBinLAnd(const BinaryOperator *E) { 10227f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *LHSCond = CGF.EvaluateExprAsBool(E->getLHS()); 10237f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 1024984d0b414bc76d3530b9bc55a5a55834ba76c607Gabor Greif llvm::BasicBlock *ContBlock = llvm::BasicBlock::Create("land_cont"); 1025984d0b414bc76d3530b9bc55a5a55834ba76c607Gabor Greif llvm::BasicBlock *RHSBlock = llvm::BasicBlock::Create("land_rhs"); 10267f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 10277f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner llvm::BasicBlock *OrigBlock = Builder.GetInsertBlock(); 10287f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Builder.CreateCondBr(LHSCond, RHSBlock, ContBlock); 10297f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 10307f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner CGF.EmitBlock(RHSBlock); 10317f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *RHSCond = CGF.EvaluateExprAsBool(E->getRHS()); 10327f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 10337f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Reaquire the RHS block, as there may be subblocks inserted. 10347f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner RHSBlock = Builder.GetInsertBlock(); 10357f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner CGF.EmitBlock(ContBlock); 10367f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 10377f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Create a PHI node. If we just evaluted the LHS condition, the result is 10387f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // false. If we evaluated both, the result is the RHS condition. 10397f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner llvm::PHINode *PN = Builder.CreatePHI(llvm::Type::Int1Ty, "land"); 10407f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner PN->reserveOperandSpace(2); 10417f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner PN->addIncoming(llvm::ConstantInt::getFalse(), OrigBlock); 10427f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner PN->addIncoming(RHSCond, RHSBlock); 10437f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 10447f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // ZExt result to int. 10457f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateZExt(PN, CGF.LLVMIntTy, "land.ext"); 10467f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 10477f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 10487f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::VisitBinLOr(const BinaryOperator *E) { 10497f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *LHSCond = CGF.EvaluateExprAsBool(E->getLHS()); 10507f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 1051984d0b414bc76d3530b9bc55a5a55834ba76c607Gabor Greif llvm::BasicBlock *ContBlock = llvm::BasicBlock::Create("lor_cont"); 1052984d0b414bc76d3530b9bc55a5a55834ba76c607Gabor Greif llvm::BasicBlock *RHSBlock = llvm::BasicBlock::Create("lor_rhs"); 10537f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 10547f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner llvm::BasicBlock *OrigBlock = Builder.GetInsertBlock(); 10557f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Builder.CreateCondBr(LHSCond, ContBlock, RHSBlock); 10567f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 10577f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner CGF.EmitBlock(RHSBlock); 10587f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Value *RHSCond = CGF.EvaluateExprAsBool(E->getRHS()); 10597f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 10607f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Reaquire the RHS block, as there may be subblocks inserted. 10617f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner RHSBlock = Builder.GetInsertBlock(); 10627f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner CGF.EmitBlock(ContBlock); 10637f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 10647f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Create a PHI node. If we just evaluted the LHS condition, the result is 10657f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // true. If we evaluated both, the result is the RHS condition. 10667f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner llvm::PHINode *PN = Builder.CreatePHI(llvm::Type::Int1Ty, "lor"); 10677f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner PN->reserveOperandSpace(2); 10687f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner PN->addIncoming(llvm::ConstantInt::getTrue(), OrigBlock); 10697f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner PN->addIncoming(RHSCond, RHSBlock); 10707f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 10717f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // ZExt result to int. 10727f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Builder.CreateZExt(PN, CGF.LLVMIntTy, "lor.ext"); 10737f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 10747f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 10757f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::VisitBinComma(const BinaryOperator *E) { 10767f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner CGF.EmitStmt(E->getLHS()); 10777f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return Visit(E->getRHS()); 10787f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 10797f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 10807f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner//===----------------------------------------------------------------------===// 10817f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner// Other Operators 10827f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner//===----------------------------------------------------------------------===// 10837f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 10847f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter:: 10857f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerVisitConditionalOperator(const ConditionalOperator *E) { 1086984d0b414bc76d3530b9bc55a5a55834ba76c607Gabor Greif llvm::BasicBlock *LHSBlock = llvm::BasicBlock::Create("cond.?"); 1087984d0b414bc76d3530b9bc55a5a55834ba76c607Gabor Greif llvm::BasicBlock *RHSBlock = llvm::BasicBlock::Create("cond.:"); 1088984d0b414bc76d3530b9bc55a5a55834ba76c607Gabor Greif llvm::BasicBlock *ContBlock = llvm::BasicBlock::Create("cond.cont"); 10897f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 1090a21ddb30e56026967d58e26c5212744e1831305bChris Lattner // Evaluate the conditional, then convert it to bool. We do this explicitly 1091a21ddb30e56026967d58e26c5212744e1831305bChris Lattner // because we need the unconverted value if this is a GNU ?: expression with 1092a21ddb30e56026967d58e26c5212744e1831305bChris Lattner // missing middle value. 1093a21ddb30e56026967d58e26c5212744e1831305bChris Lattner Value *CondVal = CGF.EmitScalarExpr(E->getCond()); 1094c89bf69c9289d2b2305f2c267daacc7312391898Chris Lattner Value *CondBoolVal =CGF.EmitScalarConversion(CondVal, E->getCond()->getType(), 1095c89bf69c9289d2b2305f2c267daacc7312391898Chris Lattner CGF.getContext().BoolTy); 1096a21ddb30e56026967d58e26c5212744e1831305bChris Lattner Builder.CreateCondBr(CondBoolVal, LHSBlock, RHSBlock); 10977f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 10987f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner CGF.EmitBlock(LHSBlock); 10997f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 11007f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Handle the GNU extension for missing LHS. 1101a21ddb30e56026967d58e26c5212744e1831305bChris Lattner Value *LHS; 1102a21ddb30e56026967d58e26c5212744e1831305bChris Lattner if (E->getLHS()) 1103856226c37ff10955c7f3f07ce6fa9522da23a3a5Eli Friedman LHS = Visit(E->getLHS()); 1104a21ddb30e56026967d58e26c5212744e1831305bChris Lattner else // Perform promotions, to handle cases like "short ?: int" 1105a21ddb30e56026967d58e26c5212744e1831305bChris Lattner LHS = EmitScalarConversion(CondVal, E->getCond()->getType(), E->getType()); 1106a21ddb30e56026967d58e26c5212744e1831305bChris Lattner 11077f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Builder.CreateBr(ContBlock); 11087f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner LHSBlock = Builder.GetInsertBlock(); 11097f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 11107f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner CGF.EmitBlock(RHSBlock); 11117f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 1112856226c37ff10955c7f3f07ce6fa9522da23a3a5Eli Friedman Value *RHS = Visit(E->getRHS()); 11137f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner Builder.CreateBr(ContBlock); 11147f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner RHSBlock = Builder.GetInsertBlock(); 11157f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 11167f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner CGF.EmitBlock(ContBlock); 11177f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 1118108f55d6fd9a1c0e753eb8e046cb1f1b81d77a76Nuno Lopes if (!LHS || !RHS) { 11192202bce80fc72d067cbe67dc1512f7b45351fd31Chris Lattner assert(E->getType()->isVoidType() && "Non-void value should have a value"); 11202202bce80fc72d067cbe67dc1512f7b45351fd31Chris Lattner return 0; 11212202bce80fc72d067cbe67dc1512f7b45351fd31Chris Lattner } 11222202bce80fc72d067cbe67dc1512f7b45351fd31Chris Lattner 11237f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Create a PHI node for the real part. 11247f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner llvm::PHINode *PN = Builder.CreatePHI(LHS->getType(), "cond"); 11257f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner PN->reserveOperandSpace(2); 11267f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner PN->addIncoming(LHS, LHSBlock); 11277f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner PN->addIncoming(RHS, RHSBlock); 11287f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return PN; 11297f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 11307f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 11317f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *ScalarExprEmitter::VisitChooseExpr(ChooseExpr *E) { 11327f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner // Emit the LHS or RHS as appropriate. 1133e9b8c0a38549692f1b8f688c05c35442fc620865Devang Patel return 1134e9b8c0a38549692f1b8f688c05c35442fc620865Devang Patel Visit(E->isConditionTrue(CGF.getContext()) ? E->getLHS() : E->getRHS()); 11357f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 11367f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 1137e2ce1d9440186cf3332368291cd884a6e3ae8946Nate BegemanValue *ScalarExprEmitter::VisitOverloadExpr(OverloadExpr *E) { 113867295d05c50ab0b5d1b0f9ef82a906701c348715Nate Begeman return CGF.EmitCallExpr(E->getFn(), E->arg_begin(), 11395549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek E->arg_end(CGF.getContext())).getScalarVal(); 1140e2ce1d9440186cf3332368291cd884a6e3ae8946Nate Begeman} 1141e2ce1d9440186cf3332368291cd884a6e3ae8946Nate Begeman 11422202bce80fc72d067cbe67dc1512f7b45351fd31Chris LattnerValue *ScalarExprEmitter::VisitVAArgExpr(VAArgExpr *VE) { 11437c50aca2fe36f6daa9bf1c8c428f30e72f96470aAnders Carlsson llvm::Value *ArgValue = EmitLValue(VE->getSubExpr()).getAddress(); 11447c50aca2fe36f6daa9bf1c8c428f30e72f96470aAnders Carlsson 11457c50aca2fe36f6daa9bf1c8c428f30e72f96470aAnders Carlsson llvm::Value *V = Builder.CreateVAArg(ArgValue, ConvertType(VE->getType())); 11467c50aca2fe36f6daa9bf1c8c428f30e72f96470aAnders Carlsson return V; 11477c50aca2fe36f6daa9bf1c8c428f30e72f96470aAnders Carlsson} 11487c50aca2fe36f6daa9bf1c8c428f30e72f96470aAnders Carlsson 11492202bce80fc72d067cbe67dc1512f7b45351fd31Chris LattnerValue *ScalarExprEmitter::VisitObjCEncodeExpr(const ObjCEncodeExpr *E) { 115085f9bceab1542aafff012d4d28e998f4ba16e362Anders Carlsson std::string str; 11510d504c1da852e58ff802545c823ecff3b6c654b8Daniel Dunbar CGF.getContext().getObjCEncodingForType(E->getEncodedType(), str); 115285f9bceab1542aafff012d4d28e998f4ba16e362Anders Carlsson 115385f9bceab1542aafff012d4d28e998f4ba16e362Anders Carlsson llvm::Constant *C = llvm::ConstantArray::get(str); 115485f9bceab1542aafff012d4d28e998f4ba16e362Anders Carlsson C = new llvm::GlobalVariable(C->getType(), true, 115585f9bceab1542aafff012d4d28e998f4ba16e362Anders Carlsson llvm::GlobalValue::InternalLinkage, 115685f9bceab1542aafff012d4d28e998f4ba16e362Anders Carlsson C, ".str", &CGF.CGM.getModule()); 115785f9bceab1542aafff012d4d28e998f4ba16e362Anders Carlsson llvm::Constant *Zero = llvm::Constant::getNullValue(llvm::Type::Int32Ty); 115885f9bceab1542aafff012d4d28e998f4ba16e362Anders Carlsson llvm::Constant *Zeros[] = { Zero, Zero }; 115985f9bceab1542aafff012d4d28e998f4ba16e362Anders Carlsson C = llvm::ConstantExpr::getGetElementPtr(C, Zeros, 2); 116085f9bceab1542aafff012d4d28e998f4ba16e362Anders Carlsson 116185f9bceab1542aafff012d4d28e998f4ba16e362Anders Carlsson return C; 116285f9bceab1542aafff012d4d28e998f4ba16e362Anders Carlsson} 116385f9bceab1542aafff012d4d28e998f4ba16e362Anders Carlsson 11647f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner//===----------------------------------------------------------------------===// 11657f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner// Entry Point into this File 11667f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner//===----------------------------------------------------------------------===// 11677f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 11687f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner/// EmitComplexExpr - Emit the computation of the specified expression of 11697f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner/// complex type, ignoring the result. 11707f02f721d48772e4eee4fccd8af4f800be1bbc1eChris LattnerValue *CodeGenFunction::EmitScalarExpr(const Expr *E) { 11717f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner assert(E && !hasAggregateLLVMType(E->getType()) && 11727f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner "Invalid scalar expression to emit"); 11737f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner 11747f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner return ScalarExprEmitter(*this).Visit(const_cast<Expr*>(E)); 11757f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner} 11763707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner 11773707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner/// EmitScalarConversion - Emit a conversion from the specified type to the 11783707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner/// specified destination type, both of which are LLVM scalar types. 11794f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris LattnerValue *CodeGenFunction::EmitScalarConversion(Value *Src, QualType SrcTy, 11804f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner QualType DstTy) { 11813707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner assert(!hasAggregateLLVMType(SrcTy) && !hasAggregateLLVMType(DstTy) && 11823707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner "Invalid scalar expression to emit"); 11833707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner return ScalarExprEmitter(*this).EmitScalarConversion(Src, SrcTy, DstTy); 11843707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner} 11854f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner 11864f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner/// EmitComplexToScalarConversion - Emit a conversion from the specified 11874f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner/// complex type to the specified destination type, where the destination 11884f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner/// type is an LLVM scalar type. 11894f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris LattnerValue *CodeGenFunction::EmitComplexToScalarConversion(ComplexPairTy Src, 11904f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner QualType SrcTy, 11914f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner QualType DstTy) { 11929b2dc287177394a8f73833e2ad4f7ca8cd6f22bbChris Lattner assert(SrcTy->isAnyComplexType() && !hasAggregateLLVMType(DstTy) && 11934f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner "Invalid complex -> scalar conversion"); 11944f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner return ScalarExprEmitter(*this).EmitComplexToScalarConversion(Src, SrcTy, 11954f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner DstTy); 11964f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner} 1197cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson 1198cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders CarlssonValue *CodeGenFunction::EmitShuffleVector(Value* V1, Value *V2, ...) { 1199cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson assert(V1->getType() == V2->getType() && 1200cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson "Vector operands must be of the same type"); 1201cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson unsigned NumElements = 1202cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson cast<llvm::VectorType>(V1->getType())->getNumElements(); 1203cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson 1204cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson va_list va; 1205cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson va_start(va, V2); 1206cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson 1207cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson llvm::SmallVector<llvm::Constant*, 16> Args; 1208cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson for (unsigned i = 0; i < NumElements; i++) { 1209cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson int n = va_arg(va, int); 1210cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson assert(n >= 0 && n < (int)NumElements * 2 && 1211cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson "Vector shuffle index out of bounds!"); 1212cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson Args.push_back(llvm::ConstantInt::get(llvm::Type::Int32Ty, n)); 1213cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson } 1214cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson 1215cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson const char *Name = va_arg(va, const char *); 1216cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson va_end(va); 1217cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson 1218cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson llvm::Constant *Mask = llvm::ConstantVector::get(&Args[0], NumElements); 1219cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson 1220cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson return Builder.CreateShuffleVector(V1, V2, Mask, Name); 1221cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson} 1222cc23acae84c6d5c37b4805edbcd95ee5d821c400Anders Carlsson 12236086bbd1799e22e75561c3d31dc9b923f0508fa5Anders Carlssonllvm::Value *CodeGenFunction::EmitVector(llvm::Value * const *Vals, 1224345f7209692b116ca433a3196c1e3c998e0ffcdeChris Lattner unsigned NumVals, bool isSplat) { 12256086bbd1799e22e75561c3d31dc9b923f0508fa5Anders Carlsson llvm::Value *Vec 1226345f7209692b116ca433a3196c1e3c998e0ffcdeChris Lattner = llvm::UndefValue::get(llvm::VectorType::get(Vals[0]->getType(), NumVals)); 12276086bbd1799e22e75561c3d31dc9b923f0508fa5Anders Carlsson 1228345f7209692b116ca433a3196c1e3c998e0ffcdeChris Lattner for (unsigned i = 0, e = NumVals; i != e; ++i) { 12294119d1aeca8016654d381ce079864058d1709571Nate Begeman llvm::Value *Val = isSplat ? Vals[0] : Vals[i]; 12306086bbd1799e22e75561c3d31dc9b923f0508fa5Anders Carlsson llvm::Value *Idx = llvm::ConstantInt::get(llvm::Type::Int32Ty, i); 12314119d1aeca8016654d381ce079864058d1709571Nate Begeman Vec = Builder.CreateInsertElement(Vec, Val, Idx, "tmp"); 12326086bbd1799e22e75561c3d31dc9b923f0508fa5Anders Carlsson } 12336086bbd1799e22e75561c3d31dc9b923f0508fa5Anders Carlsson 12346086bbd1799e22e75561c3d31dc9b923f0508fa5Anders Carlsson return Vec; 12356086bbd1799e22e75561c3d31dc9b923f0508fa5Anders Carlsson} 1236