Check in LLVM r95781.
diff --git a/lib/CodeGen/CGExprComplex.cpp b/lib/CodeGen/CGExprComplex.cpp
new file mode 100644
index 0000000..5ec336c
--- /dev/null
+++ b/lib/CodeGen/CGExprComplex.cpp
@@ -0,0 +1,724 @@
+//===--- CGExprComplex.cpp - Emit LLVM Code for Complex Exprs -------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This contains code to emit Expr nodes with complex types as LLVM code.
+//
+//===----------------------------------------------------------------------===//
+
+#include "CodeGenFunction.h"
+#include "CodeGenModule.h"
+#include "clang/AST/ASTContext.h"
+#include "clang/AST/StmtVisitor.h"
+#include "llvm/Constants.h"
+#include "llvm/Function.h"
+#include "llvm/ADT/SmallString.h"
+using namespace clang;
+using namespace CodeGen;
+
+//===----------------------------------------------------------------------===//
+// Complex Expression Emitter
+//===----------------------------------------------------------------------===//
+
+typedef CodeGenFunction::ComplexPairTy ComplexPairTy;
+
+namespace {
+class ComplexExprEmitter
+ : public StmtVisitor<ComplexExprEmitter, ComplexPairTy> {
+ CodeGenFunction &CGF;
+ CGBuilderTy &Builder;
+ // True is we should ignore the value of a
+ bool IgnoreReal;
+ bool IgnoreImag;
+ // True if we should ignore the value of a=b
+ bool IgnoreRealAssign;
+ bool IgnoreImagAssign;
+public:
+ ComplexExprEmitter(CodeGenFunction &cgf, bool ir=false, bool ii=false,
+ bool irn=false, bool iin=false)
+ : CGF(cgf), Builder(CGF.Builder), IgnoreReal(ir), IgnoreImag(ii),
+ IgnoreRealAssign(irn), IgnoreImagAssign(iin) {
+ }
+
+
+ //===--------------------------------------------------------------------===//
+ // Utilities
+ //===--------------------------------------------------------------------===//
+
+ bool TestAndClearIgnoreReal() {
+ bool I = IgnoreReal;
+ IgnoreReal = false;
+ return I;
+ }
+ bool TestAndClearIgnoreImag() {
+ bool I = IgnoreImag;
+ IgnoreImag = false;
+ return I;
+ }
+ bool TestAndClearIgnoreRealAssign() {
+ bool I = IgnoreRealAssign;
+ IgnoreRealAssign = false;
+ return I;
+ }
+ bool TestAndClearIgnoreImagAssign() {
+ bool I = IgnoreImagAssign;
+ IgnoreImagAssign = false;
+ return I;
+ }
+
+ /// EmitLoadOfLValue - Given an expression with complex type that represents a
+ /// value l-value, this method emits the address of the l-value, then loads
+ /// and returns the result.
+ ComplexPairTy EmitLoadOfLValue(const Expr *E) {
+ LValue LV = CGF.EmitLValue(E);
+ if (LV.isSimple())
+ return EmitLoadOfComplex(LV.getAddress(), LV.isVolatileQualified());
+
+ if (LV.isPropertyRef())
+ return CGF.EmitObjCPropertyGet(LV.getPropertyRefExpr()).getComplexVal();
+
+ assert(LV.isKVCRef() && "Unknown LValue type!");
+ return CGF.EmitObjCPropertyGet(LV.getKVCRefExpr()).getComplexVal();
+ }
+
+ /// EmitLoadOfComplex - Given a pointer to a complex value, emit code to load
+ /// the real and imaginary pieces.
+ ComplexPairTy EmitLoadOfComplex(llvm::Value *SrcPtr, bool isVolatile);
+
+ /// EmitStoreOfComplex - Store the specified real/imag parts into the
+ /// specified value pointer.
+ void EmitStoreOfComplex(ComplexPairTy Val, llvm::Value *ResPtr, bool isVol);
+
+ /// EmitComplexToComplexCast - Emit a cast from complex value Val to DestType.
+ ComplexPairTy EmitComplexToComplexCast(ComplexPairTy Val, QualType SrcType,
+ QualType DestType);
+
+ //===--------------------------------------------------------------------===//
+ // Visitor Methods
+ //===--------------------------------------------------------------------===//
+
+ ComplexPairTy VisitStmt(Stmt *S) {
+ S->dump(CGF.getContext().getSourceManager());
+ assert(0 && "Stmt can't have complex result type!");
+ return ComplexPairTy();
+ }
+ ComplexPairTy VisitExpr(Expr *S);
+ ComplexPairTy VisitParenExpr(ParenExpr *PE) { return Visit(PE->getSubExpr());}
+ ComplexPairTy VisitImaginaryLiteral(const ImaginaryLiteral *IL);
+
+ // l-values.
+ ComplexPairTy VisitDeclRefExpr(const Expr *E) { return EmitLoadOfLValue(E); }
+ ComplexPairTy VisitObjCIvarRefExpr(ObjCIvarRefExpr *E) {
+ return EmitLoadOfLValue(E);
+ }
+ ComplexPairTy VisitObjCPropertyRefExpr(ObjCPropertyRefExpr *E) {
+ return EmitLoadOfLValue(E);
+ }
+ ComplexPairTy VisitObjCImplicitSetterGetterRefExpr(
+ ObjCImplicitSetterGetterRefExpr *E) {
+ return EmitLoadOfLValue(E);
+ }
+ ComplexPairTy VisitObjCMessageExpr(ObjCMessageExpr *E) {
+ return CGF.EmitObjCMessageExpr(E).getComplexVal();
+ }
+ ComplexPairTy VisitArraySubscriptExpr(Expr *E) { return EmitLoadOfLValue(E); }
+ ComplexPairTy VisitMemberExpr(const Expr *E) { return EmitLoadOfLValue(E); }
+
+ // FIXME: CompoundLiteralExpr
+
+ ComplexPairTy EmitCast(Expr *Op, QualType DestTy);
+ ComplexPairTy VisitImplicitCastExpr(ImplicitCastExpr *E) {
+ // Unlike for scalars, we don't have to worry about function->ptr demotion
+ // here.
+ return EmitCast(E->getSubExpr(), E->getType());
+ }
+ ComplexPairTy VisitCastExpr(CastExpr *E) {
+ return EmitCast(E->getSubExpr(), E->getType());
+ }
+ ComplexPairTy VisitCallExpr(const CallExpr *E);
+ ComplexPairTy VisitStmtExpr(const StmtExpr *E);
+
+ // Operators.
+ ComplexPairTy VisitPrePostIncDec(const UnaryOperator *E,
+ bool isInc, bool isPre) {
+ LValue LV = CGF.EmitLValue(E->getSubExpr());
+ return CGF.EmitComplexPrePostIncDec(E, LV, isInc, isPre);
+ }
+ ComplexPairTy VisitUnaryPostDec(const UnaryOperator *E) {
+ return VisitPrePostIncDec(E, false, false);
+ }
+ ComplexPairTy VisitUnaryPostInc(const UnaryOperator *E) {
+ return VisitPrePostIncDec(E, true, false);
+ }
+ ComplexPairTy VisitUnaryPreDec(const UnaryOperator *E) {
+ return VisitPrePostIncDec(E, false, true);
+ }
+ ComplexPairTy VisitUnaryPreInc(const UnaryOperator *E) {
+ return VisitPrePostIncDec(E, true, true);
+ }
+ ComplexPairTy VisitUnaryDeref(const Expr *E) { return EmitLoadOfLValue(E); }
+ ComplexPairTy VisitUnaryPlus (const UnaryOperator *E) {
+ TestAndClearIgnoreReal();
+ TestAndClearIgnoreImag();
+ TestAndClearIgnoreRealAssign();
+ TestAndClearIgnoreImagAssign();
+ return Visit(E->getSubExpr());
+ }
+ ComplexPairTy VisitUnaryMinus (const UnaryOperator *E);
+ ComplexPairTy VisitUnaryNot (const UnaryOperator *E);
+ // LNot,Real,Imag never return complex.
+ ComplexPairTy VisitUnaryExtension(const UnaryOperator *E) {
+ return Visit(E->getSubExpr());
+ }
+ ComplexPairTy VisitCXXDefaultArgExpr(CXXDefaultArgExpr *DAE) {
+ return Visit(DAE->getExpr());
+ }
+ ComplexPairTy VisitCXXExprWithTemporaries(CXXExprWithTemporaries *E) {
+ return CGF.EmitCXXExprWithTemporaries(E).getComplexVal();
+ }
+ ComplexPairTy VisitCXXZeroInitValueExpr(CXXZeroInitValueExpr *E) {
+ assert(E->getType()->isAnyComplexType() && "Expected complex type!");
+ QualType Elem = E->getType()->getAs<ComplexType>()->getElementType();
+ llvm::Constant *Null = llvm::Constant::getNullValue(CGF.ConvertType(Elem));
+ return ComplexPairTy(Null, Null);
+ }
+ ComplexPairTy VisitImplicitValueInitExpr(ImplicitValueInitExpr *E) {
+ assert(E->getType()->isAnyComplexType() && "Expected complex type!");
+ QualType Elem = E->getType()->getAs<ComplexType>()->getElementType();
+ llvm::Constant *Null =
+ llvm::Constant::getNullValue(CGF.ConvertType(Elem));
+ return ComplexPairTy(Null, Null);
+ }
+
+ struct BinOpInfo {
+ ComplexPairTy LHS;
+ ComplexPairTy RHS;
+ QualType Ty; // Computation Type.
+ };
+
+ BinOpInfo EmitBinOps(const BinaryOperator *E);
+ ComplexPairTy EmitCompoundAssign(const CompoundAssignOperator *E,
+ ComplexPairTy (ComplexExprEmitter::*Func)
+ (const BinOpInfo &));
+
+ ComplexPairTy EmitBinAdd(const BinOpInfo &Op);
+ ComplexPairTy EmitBinSub(const BinOpInfo &Op);
+ ComplexPairTy EmitBinMul(const BinOpInfo &Op);
+ ComplexPairTy EmitBinDiv(const BinOpInfo &Op);
+
+ ComplexPairTy VisitBinMul(const BinaryOperator *E) {
+ return EmitBinMul(EmitBinOps(E));
+ }
+ ComplexPairTy VisitBinAdd(const BinaryOperator *E) {
+ return EmitBinAdd(EmitBinOps(E));
+ }
+ ComplexPairTy VisitBinSub(const BinaryOperator *E) {
+ return EmitBinSub(EmitBinOps(E));
+ }
+ ComplexPairTy VisitBinDiv(const BinaryOperator *E) {
+ return EmitBinDiv(EmitBinOps(E));
+ }
+
+ // Compound assignments.
+ ComplexPairTy VisitBinAddAssign(const CompoundAssignOperator *E) {
+ return EmitCompoundAssign(E, &ComplexExprEmitter::EmitBinAdd);
+ }
+ ComplexPairTy VisitBinSubAssign(const CompoundAssignOperator *E) {
+ return EmitCompoundAssign(E, &ComplexExprEmitter::EmitBinSub);
+ }
+ ComplexPairTy VisitBinMulAssign(const CompoundAssignOperator *E) {
+ return EmitCompoundAssign(E, &ComplexExprEmitter::EmitBinMul);
+ }
+ ComplexPairTy VisitBinDivAssign(const CompoundAssignOperator *E) {
+ return EmitCompoundAssign(E, &ComplexExprEmitter::EmitBinDiv);
+ }
+
+ // GCC rejects rem/and/or/xor for integer complex.
+ // Logical and/or always return int, never complex.
+
+ // No comparisons produce a complex result.
+ ComplexPairTy VisitBinAssign (const BinaryOperator *E);
+ ComplexPairTy VisitBinComma (const BinaryOperator *E);
+
+
+ ComplexPairTy VisitConditionalOperator(const ConditionalOperator *CO);
+ ComplexPairTy VisitChooseExpr(ChooseExpr *CE);
+
+ ComplexPairTy VisitInitListExpr(InitListExpr *E);
+
+ ComplexPairTy VisitVAArgExpr(VAArgExpr *E);
+};
+} // end anonymous namespace.
+
+//===----------------------------------------------------------------------===//
+// Utilities
+//===----------------------------------------------------------------------===//
+
+/// EmitLoadOfComplex - Given an RValue reference for a complex, emit code to
+/// load the real and imaginary pieces, returning them as Real/Imag.
+ComplexPairTy ComplexExprEmitter::EmitLoadOfComplex(llvm::Value *SrcPtr,
+ bool isVolatile) {
+ llvm::Value *Real=0, *Imag=0;
+
+ if (!IgnoreReal) {
+ llvm::Value *RealP = Builder.CreateStructGEP(SrcPtr, 0,
+ SrcPtr->getName() + ".realp");
+ Real = Builder.CreateLoad(RealP, isVolatile, SrcPtr->getName() + ".real");
+ }
+
+ if (!IgnoreImag) {
+ llvm::Value *ImagP = Builder.CreateStructGEP(SrcPtr, 1,
+ SrcPtr->getName() + ".imagp");
+ Imag = Builder.CreateLoad(ImagP, isVolatile, SrcPtr->getName() + ".imag");
+ }
+ return ComplexPairTy(Real, Imag);
+}
+
+/// EmitStoreOfComplex - Store the specified real/imag parts into the
+/// specified value pointer.
+void ComplexExprEmitter::EmitStoreOfComplex(ComplexPairTy Val, llvm::Value *Ptr,
+ bool isVolatile) {
+ llvm::Value *RealPtr = Builder.CreateStructGEP(Ptr, 0, "real");
+ llvm::Value *ImagPtr = Builder.CreateStructGEP(Ptr, 1, "imag");
+
+ Builder.CreateStore(Val.first, RealPtr, isVolatile);
+ Builder.CreateStore(Val.second, ImagPtr, isVolatile);
+}
+
+
+
+//===----------------------------------------------------------------------===//
+// Visitor Methods
+//===----------------------------------------------------------------------===//
+
+ComplexPairTy ComplexExprEmitter::VisitExpr(Expr *E) {
+ CGF.ErrorUnsupported(E, "complex expression");
+ const llvm::Type *EltTy =
+ CGF.ConvertType(E->getType()->getAs<ComplexType>()->getElementType());
+ llvm::Value *U = llvm::UndefValue::get(EltTy);
+ return ComplexPairTy(U, U);
+}
+
+ComplexPairTy ComplexExprEmitter::
+VisitImaginaryLiteral(const ImaginaryLiteral *IL) {
+ llvm::Value *Imag = CGF.EmitScalarExpr(IL->getSubExpr());
+ return
+ ComplexPairTy(llvm::Constant::getNullValue(Imag->getType()), Imag);
+}
+
+
+ComplexPairTy ComplexExprEmitter::VisitCallExpr(const CallExpr *E) {
+ if (E->getCallReturnType()->isReferenceType())
+ return EmitLoadOfLValue(E);
+
+ return CGF.EmitCallExpr(E).getComplexVal();
+}
+
+ComplexPairTy ComplexExprEmitter::VisitStmtExpr(const StmtExpr *E) {
+ return CGF.EmitCompoundStmt(*E->getSubStmt(), true).getComplexVal();
+}
+
+/// EmitComplexToComplexCast - Emit a cast from complex value Val to DestType.
+ComplexPairTy ComplexExprEmitter::EmitComplexToComplexCast(ComplexPairTy Val,
+ QualType SrcType,
+ QualType DestType) {
+ // Get the src/dest element type.
+ SrcType = SrcType->getAs<ComplexType>()->getElementType();
+ DestType = DestType->getAs<ComplexType>()->getElementType();
+
+ // C99 6.3.1.6: When a value of complex type is converted to another
+ // complex type, both the real and imaginary parts follow the conversion
+ // rules for the corresponding real types.
+ Val.first = CGF.EmitScalarConversion(Val.first, SrcType, DestType);
+ Val.second = CGF.EmitScalarConversion(Val.second, SrcType, DestType);
+ return Val;
+}
+
+ComplexPairTy ComplexExprEmitter::EmitCast(Expr *Op, QualType DestTy) {
+ // Two cases here: cast from (complex to complex) and (scalar to complex).
+ if (Op->getType()->isAnyComplexType())
+ return EmitComplexToComplexCast(Visit(Op), Op->getType(), DestTy);
+
+ // C99 6.3.1.7: When a value of real type is converted to a complex type, the
+ // real part of the complex result value is determined by the rules of
+ // conversion to the corresponding real type and the imaginary part of the
+ // complex result value is a positive zero or an unsigned zero.
+ llvm::Value *Elt = CGF.EmitScalarExpr(Op);
+
+ // Convert the input element to the element type of the complex.
+ DestTy = DestTy->getAs<ComplexType>()->getElementType();
+ Elt = CGF.EmitScalarConversion(Elt, Op->getType(), DestTy);
+
+ // Return (realval, 0).
+ return ComplexPairTy(Elt, llvm::Constant::getNullValue(Elt->getType()));
+}
+
+ComplexPairTy ComplexExprEmitter::VisitUnaryMinus(const UnaryOperator *E) {
+ TestAndClearIgnoreReal();
+ TestAndClearIgnoreImag();
+ TestAndClearIgnoreRealAssign();
+ TestAndClearIgnoreImagAssign();
+ ComplexPairTy Op = Visit(E->getSubExpr());
+
+ llvm::Value *ResR, *ResI;
+ if (Op.first->getType()->isFloatingPoint()) {
+ ResR = Builder.CreateFNeg(Op.first, "neg.r");
+ ResI = Builder.CreateFNeg(Op.second, "neg.i");
+ } else {
+ ResR = Builder.CreateNeg(Op.first, "neg.r");
+ ResI = Builder.CreateNeg(Op.second, "neg.i");
+ }
+ return ComplexPairTy(ResR, ResI);
+}
+
+ComplexPairTy ComplexExprEmitter::VisitUnaryNot(const UnaryOperator *E) {
+ TestAndClearIgnoreReal();
+ TestAndClearIgnoreImag();
+ TestAndClearIgnoreRealAssign();
+ TestAndClearIgnoreImagAssign();
+ // ~(a+ib) = a + i*-b
+ ComplexPairTy Op = Visit(E->getSubExpr());
+ llvm::Value *ResI;
+ if (Op.second->getType()->isFloatingPoint())
+ ResI = Builder.CreateFNeg(Op.second, "conj.i");
+ else
+ ResI = Builder.CreateNeg(Op.second, "conj.i");
+
+ return ComplexPairTy(Op.first, ResI);
+}
+
+ComplexPairTy ComplexExprEmitter::EmitBinAdd(const BinOpInfo &Op) {
+ llvm::Value *ResR, *ResI;
+
+ if (Op.LHS.first->getType()->isFloatingPoint()) {
+ ResR = Builder.CreateFAdd(Op.LHS.first, Op.RHS.first, "add.r");
+ ResI = Builder.CreateFAdd(Op.LHS.second, Op.RHS.second, "add.i");
+ } else {
+ ResR = Builder.CreateAdd(Op.LHS.first, Op.RHS.first, "add.r");
+ ResI = Builder.CreateAdd(Op.LHS.second, Op.RHS.second, "add.i");
+ }
+ return ComplexPairTy(ResR, ResI);
+}
+
+ComplexPairTy ComplexExprEmitter::EmitBinSub(const BinOpInfo &Op) {
+ llvm::Value *ResR, *ResI;
+ if (Op.LHS.first->getType()->isFloatingPoint()) {
+ ResR = Builder.CreateFSub(Op.LHS.first, Op.RHS.first, "sub.r");
+ ResI = Builder.CreateFSub(Op.LHS.second, Op.RHS.second, "sub.i");
+ } else {
+ ResR = Builder.CreateSub(Op.LHS.first, Op.RHS.first, "sub.r");
+ ResI = Builder.CreateSub(Op.LHS.second, Op.RHS.second, "sub.i");
+ }
+ return ComplexPairTy(ResR, ResI);
+}
+
+
+ComplexPairTy ComplexExprEmitter::EmitBinMul(const BinOpInfo &Op) {
+ using llvm::Value;
+ Value *ResR, *ResI;
+
+ if (Op.LHS.first->getType()->isFloatingPoint()) {
+ Value *ResRl = Builder.CreateFMul(Op.LHS.first, Op.RHS.first, "mul.rl");
+ Value *ResRr = Builder.CreateFMul(Op.LHS.second, Op.RHS.second,"mul.rr");
+ ResR = Builder.CreateFSub(ResRl, ResRr, "mul.r");
+
+ Value *ResIl = Builder.CreateFMul(Op.LHS.second, Op.RHS.first, "mul.il");
+ Value *ResIr = Builder.CreateFMul(Op.LHS.first, Op.RHS.second, "mul.ir");
+ ResI = Builder.CreateFAdd(ResIl, ResIr, "mul.i");
+ } else {
+ Value *ResRl = Builder.CreateMul(Op.LHS.first, Op.RHS.first, "mul.rl");
+ Value *ResRr = Builder.CreateMul(Op.LHS.second, Op.RHS.second,"mul.rr");
+ ResR = Builder.CreateSub(ResRl, ResRr, "mul.r");
+
+ Value *ResIl = Builder.CreateMul(Op.LHS.second, Op.RHS.first, "mul.il");
+ Value *ResIr = Builder.CreateMul(Op.LHS.first, Op.RHS.second, "mul.ir");
+ ResI = Builder.CreateAdd(ResIl, ResIr, "mul.i");
+ }
+ return ComplexPairTy(ResR, ResI);
+}
+
+ComplexPairTy ComplexExprEmitter::EmitBinDiv(const BinOpInfo &Op) {
+ llvm::Value *LHSr = Op.LHS.first, *LHSi = Op.LHS.second;
+ llvm::Value *RHSr = Op.RHS.first, *RHSi = Op.RHS.second;
+
+
+ llvm::Value *DSTr, *DSTi;
+ if (Op.LHS.first->getType()->isFloatingPoint()) {
+ // (a+ib) / (c+id) = ((ac+bd)/(cc+dd)) + i((bc-ad)/(cc+dd))
+ llvm::Value *Tmp1 = Builder.CreateFMul(LHSr, RHSr, "tmp"); // a*c
+ llvm::Value *Tmp2 = Builder.CreateFMul(LHSi, RHSi, "tmp"); // b*d
+ llvm::Value *Tmp3 = Builder.CreateFAdd(Tmp1, Tmp2, "tmp"); // ac+bd
+
+ llvm::Value *Tmp4 = Builder.CreateFMul(RHSr, RHSr, "tmp"); // c*c
+ llvm::Value *Tmp5 = Builder.CreateFMul(RHSi, RHSi, "tmp"); // d*d
+ llvm::Value *Tmp6 = Builder.CreateFAdd(Tmp4, Tmp5, "tmp"); // cc+dd
+
+ llvm::Value *Tmp7 = Builder.CreateFMul(LHSi, RHSr, "tmp"); // b*c
+ llvm::Value *Tmp8 = Builder.CreateFMul(LHSr, RHSi, "tmp"); // a*d
+ llvm::Value *Tmp9 = Builder.CreateFSub(Tmp7, Tmp8, "tmp"); // bc-ad
+
+ DSTr = Builder.CreateFDiv(Tmp3, Tmp6, "tmp");
+ DSTi = Builder.CreateFDiv(Tmp9, Tmp6, "tmp");
+ } else {
+ // (a+ib) / (c+id) = ((ac+bd)/(cc+dd)) + i((bc-ad)/(cc+dd))
+ llvm::Value *Tmp1 = Builder.CreateMul(LHSr, RHSr, "tmp"); // a*c
+ llvm::Value *Tmp2 = Builder.CreateMul(LHSi, RHSi, "tmp"); // b*d
+ llvm::Value *Tmp3 = Builder.CreateAdd(Tmp1, Tmp2, "tmp"); // ac+bd
+
+ llvm::Value *Tmp4 = Builder.CreateMul(RHSr, RHSr, "tmp"); // c*c
+ llvm::Value *Tmp5 = Builder.CreateMul(RHSi, RHSi, "tmp"); // d*d
+ llvm::Value *Tmp6 = Builder.CreateAdd(Tmp4, Tmp5, "tmp"); // cc+dd
+
+ llvm::Value *Tmp7 = Builder.CreateMul(LHSi, RHSr, "tmp"); // b*c
+ llvm::Value *Tmp8 = Builder.CreateMul(LHSr, RHSi, "tmp"); // a*d
+ llvm::Value *Tmp9 = Builder.CreateSub(Tmp7, Tmp8, "tmp"); // bc-ad
+
+ if (Op.Ty->getAs<ComplexType>()->getElementType()->isUnsignedIntegerType()) {
+ DSTr = Builder.CreateUDiv(Tmp3, Tmp6, "tmp");
+ DSTi = Builder.CreateUDiv(Tmp9, Tmp6, "tmp");
+ } else {
+ DSTr = Builder.CreateSDiv(Tmp3, Tmp6, "tmp");
+ DSTi = Builder.CreateSDiv(Tmp9, Tmp6, "tmp");
+ }
+ }
+
+ return ComplexPairTy(DSTr, DSTi);
+}
+
+ComplexExprEmitter::BinOpInfo
+ComplexExprEmitter::EmitBinOps(const BinaryOperator *E) {
+ TestAndClearIgnoreReal();
+ TestAndClearIgnoreImag();
+ TestAndClearIgnoreRealAssign();
+ TestAndClearIgnoreImagAssign();
+ BinOpInfo Ops;
+ Ops.LHS = Visit(E->getLHS());
+ Ops.RHS = Visit(E->getRHS());
+ Ops.Ty = E->getType();
+ return Ops;
+}
+
+
+// Compound assignments.
+ComplexPairTy ComplexExprEmitter::
+EmitCompoundAssign(const CompoundAssignOperator *E,
+ ComplexPairTy (ComplexExprEmitter::*Func)(const BinOpInfo&)){
+ TestAndClearIgnoreReal();
+ TestAndClearIgnoreImag();
+ bool ignreal = TestAndClearIgnoreRealAssign();
+ bool ignimag = TestAndClearIgnoreImagAssign();
+ QualType LHSTy = E->getLHS()->getType(), RHSTy = E->getRHS()->getType();
+
+ BinOpInfo OpInfo;
+
+ // Load the RHS and LHS operands.
+ // __block variables need to have the rhs evaluated first, plus this should
+ // improve codegen a little. It is possible for the RHS to be complex or
+ // scalar.
+ OpInfo.Ty = E->getComputationResultType();
+ OpInfo.RHS = EmitCast(E->getRHS(), OpInfo.Ty);
+
+ LValue LHSLV = CGF.EmitLValue(E->getLHS());
+
+
+ // We know the LHS is a complex lvalue.
+ OpInfo.LHS=EmitLoadOfComplex(LHSLV.getAddress(), LHSLV.isVolatileQualified());
+ OpInfo.LHS=EmitComplexToComplexCast(OpInfo.LHS, LHSTy, OpInfo.Ty);
+
+ // Expand the binary operator.
+ ComplexPairTy Result = (this->*Func)(OpInfo);
+
+ // Truncate the result back to the LHS type.
+ Result = EmitComplexToComplexCast(Result, OpInfo.Ty, LHSTy);
+
+ // Store the result value into the LHS lvalue.
+ EmitStoreOfComplex(Result, LHSLV.getAddress(), LHSLV.isVolatileQualified());
+ // And now return the LHS
+ IgnoreReal = ignreal;
+ IgnoreImag = ignimag;
+ IgnoreRealAssign = ignreal;
+ IgnoreImagAssign = ignimag;
+ return EmitLoadOfComplex(LHSLV.getAddress(), LHSLV.isVolatileQualified());
+}
+
+ComplexPairTy ComplexExprEmitter::VisitBinAssign(const BinaryOperator *E) {
+ TestAndClearIgnoreReal();
+ TestAndClearIgnoreImag();
+ bool ignreal = TestAndClearIgnoreRealAssign();
+ bool ignimag = TestAndClearIgnoreImagAssign();
+ assert(CGF.getContext().getCanonicalType(E->getLHS()->getType()) ==
+ CGF.getContext().getCanonicalType(E->getRHS()->getType()) &&
+ "Invalid assignment");
+ // Emit the RHS.
+ ComplexPairTy Val = Visit(E->getRHS());
+
+ // Compute the address to store into.
+ LValue LHS = CGF.EmitLValue(E->getLHS());
+
+ // Store into it, if simple.
+ if (LHS.isSimple()) {
+ EmitStoreOfComplex(Val, LHS.getAddress(), LHS.isVolatileQualified());
+
+ // And now return the LHS
+ IgnoreReal = ignreal;
+ IgnoreImag = ignimag;
+ IgnoreRealAssign = ignreal;
+ IgnoreImagAssign = ignimag;
+ return EmitLoadOfComplex(LHS.getAddress(), LHS.isVolatileQualified());
+ }
+
+ // Otherwise we must have a property setter (no complex vector/bitfields).
+ if (LHS.isPropertyRef())
+ CGF.EmitObjCPropertySet(LHS.getPropertyRefExpr(), RValue::getComplex(Val));
+ else
+ CGF.EmitObjCPropertySet(LHS.getKVCRefExpr(), RValue::getComplex(Val));
+
+ // There is no reload after a store through a method, but we need to restore
+ // the Ignore* flags.
+ IgnoreReal = ignreal;
+ IgnoreImag = ignimag;
+ IgnoreRealAssign = ignreal;
+ IgnoreImagAssign = ignimag;
+ return Val;
+}
+
+ComplexPairTy ComplexExprEmitter::VisitBinComma(const BinaryOperator *E) {
+ CGF.EmitStmt(E->getLHS());
+ CGF.EnsureInsertPoint();
+ return Visit(E->getRHS());
+}
+
+ComplexPairTy ComplexExprEmitter::
+VisitConditionalOperator(const ConditionalOperator *E) {
+ if (!E->getLHS()) {
+ CGF.ErrorUnsupported(E, "conditional operator with missing LHS");
+ const llvm::Type *EltTy =
+ CGF.ConvertType(E->getType()->getAs<ComplexType>()->getElementType());
+ llvm::Value *U = llvm::UndefValue::get(EltTy);
+ return ComplexPairTy(U, U);
+ }
+
+ TestAndClearIgnoreReal();
+ TestAndClearIgnoreImag();
+ TestAndClearIgnoreRealAssign();
+ TestAndClearIgnoreImagAssign();
+ llvm::BasicBlock *LHSBlock = CGF.createBasicBlock("cond.true");
+ llvm::BasicBlock *RHSBlock = CGF.createBasicBlock("cond.false");
+ llvm::BasicBlock *ContBlock = CGF.createBasicBlock("cond.end");
+
+ CGF.EmitBranchOnBoolExpr(E->getCond(), LHSBlock, RHSBlock);
+
+ CGF.EmitBlock(LHSBlock);
+
+ // Handle the GNU extension for missing LHS.
+ assert(E->getLHS() && "Must have LHS for complex value");
+
+ ComplexPairTy LHS = Visit(E->getLHS());
+ LHSBlock = Builder.GetInsertBlock();
+ CGF.EmitBranch(ContBlock);
+
+ CGF.EmitBlock(RHSBlock);
+
+ ComplexPairTy RHS = Visit(E->getRHS());
+ RHSBlock = Builder.GetInsertBlock();
+ CGF.EmitBranch(ContBlock);
+
+ CGF.EmitBlock(ContBlock);
+
+ // Create a PHI node for the real part.
+ llvm::PHINode *RealPN = Builder.CreatePHI(LHS.first->getType(), "cond.r");
+ RealPN->reserveOperandSpace(2);
+ RealPN->addIncoming(LHS.first, LHSBlock);
+ RealPN->addIncoming(RHS.first, RHSBlock);
+
+ // Create a PHI node for the imaginary part.
+ llvm::PHINode *ImagPN = Builder.CreatePHI(LHS.first->getType(), "cond.i");
+ ImagPN->reserveOperandSpace(2);
+ ImagPN->addIncoming(LHS.second, LHSBlock);
+ ImagPN->addIncoming(RHS.second, RHSBlock);
+
+ return ComplexPairTy(RealPN, ImagPN);
+}
+
+ComplexPairTy ComplexExprEmitter::VisitChooseExpr(ChooseExpr *E) {
+ return Visit(E->getChosenSubExpr(CGF.getContext()));
+}
+
+ComplexPairTy ComplexExprEmitter::VisitInitListExpr(InitListExpr *E) {
+ bool Ignore = TestAndClearIgnoreReal();
+ (void)Ignore;
+ assert (Ignore == false && "init list ignored");
+ Ignore = TestAndClearIgnoreImag();
+ (void)Ignore;
+ assert (Ignore == false && "init list ignored");
+ if (E->getNumInits())
+ return Visit(E->getInit(0));
+
+ // Empty init list intializes to null
+ QualType Ty = E->getType()->getAs<ComplexType>()->getElementType();
+ const llvm::Type* LTy = CGF.ConvertType(Ty);
+ llvm::Value* zeroConstant = llvm::Constant::getNullValue(LTy);
+ return ComplexPairTy(zeroConstant, zeroConstant);
+}
+
+ComplexPairTy ComplexExprEmitter::VisitVAArgExpr(VAArgExpr *E) {
+ llvm::Value *ArgValue = CGF.EmitVAListRef(E->getSubExpr());
+ llvm::Value *ArgPtr = CGF.EmitVAArg(ArgValue, E->getType());
+
+ if (!ArgPtr) {
+ CGF.ErrorUnsupported(E, "complex va_arg expression");
+ const llvm::Type *EltTy =
+ CGF.ConvertType(E->getType()->getAs<ComplexType>()->getElementType());
+ llvm::Value *U = llvm::UndefValue::get(EltTy);
+ return ComplexPairTy(U, U);
+ }
+
+ // FIXME Volatility.
+ return EmitLoadOfComplex(ArgPtr, false);
+}
+
+//===----------------------------------------------------------------------===//
+// Entry Point into this File
+//===----------------------------------------------------------------------===//
+
+/// EmitComplexExpr - Emit the computation of the specified expression of
+/// complex type, ignoring the result.
+ComplexPairTy CodeGenFunction::EmitComplexExpr(const Expr *E, bool IgnoreReal,
+ bool IgnoreImag, bool IgnoreRealAssign, bool IgnoreImagAssign) {
+ assert(E && E->getType()->isAnyComplexType() &&
+ "Invalid complex expression to emit");
+
+ return ComplexExprEmitter(*this, IgnoreReal, IgnoreImag, IgnoreRealAssign,
+ IgnoreImagAssign)
+ .Visit(const_cast<Expr*>(E));
+}
+
+/// EmitComplexExprIntoAddr - Emit the computation of the specified expression
+/// of complex type, storing into the specified Value*.
+void CodeGenFunction::EmitComplexExprIntoAddr(const Expr *E,
+ llvm::Value *DestAddr,
+ bool DestIsVolatile) {
+ assert(E && E->getType()->isAnyComplexType() &&
+ "Invalid complex expression to emit");
+ ComplexExprEmitter Emitter(*this);
+ ComplexPairTy Val = Emitter.Visit(const_cast<Expr*>(E));
+ Emitter.EmitStoreOfComplex(Val, DestAddr, DestIsVolatile);
+}
+
+/// StoreComplexToAddr - Store a complex number into the specified address.
+void CodeGenFunction::StoreComplexToAddr(ComplexPairTy V,
+ llvm::Value *DestAddr,
+ bool DestIsVolatile) {
+ ComplexExprEmitter(*this).EmitStoreOfComplex(V, DestAddr, DestIsVolatile);
+}
+
+/// LoadComplexFromAddr - Load a complex number from the specified address.
+ComplexPairTy CodeGenFunction::LoadComplexFromAddr(llvm::Value *SrcAddr,
+ bool SrcIsVolatile) {
+ return ComplexExprEmitter(*this).EmitLoadOfComplex(SrcAddr, SrcIsVolatile);
+}