1 //===--- CGExprComplex.cpp - Emit LLVM Code for Complex Exprs -------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This contains code to emit Expr nodes with complex types as LLVM code.
12 //===----------------------------------------------------------------------===//
14 #include "CodeGenFunction.h"
15 #include "CodeGenModule.h"
16 #include "clang/AST/StmtVisitor.h"
17 #include "llvm/ADT/STLExtras.h"
18 #include "llvm/IR/Constants.h"
19 #include "llvm/IR/Instructions.h"
20 #include "llvm/IR/MDBuilder.h"
21 #include "llvm/IR/Metadata.h"
23 using namespace clang;
24 using namespace CodeGen;
26 //===----------------------------------------------------------------------===//
27 // Complex Expression Emitter
28 //===----------------------------------------------------------------------===//
30 typedef CodeGenFunction::ComplexPairTy ComplexPairTy;
32 /// Return the complex type that we are meant to emit.
33 static const ComplexType *getComplexType(QualType type) {
34 type = type.getCanonicalType();
35 if (const ComplexType *comp = dyn_cast<ComplexType>(type)) {
38 return cast<ComplexType>(cast<AtomicType>(type)->getValueType());
43 class ComplexExprEmitter
44 : public StmtVisitor<ComplexExprEmitter, ComplexPairTy> {
50 ComplexExprEmitter(CodeGenFunction &cgf, bool ir=false, bool ii=false)
51 : CGF(cgf), Builder(CGF.Builder), IgnoreReal(ir), IgnoreImag(ii) {
55 //===--------------------------------------------------------------------===//
57 //===--------------------------------------------------------------------===//
59 bool TestAndClearIgnoreReal() {
64 bool TestAndClearIgnoreImag() {
70 /// EmitLoadOfLValue - Given an expression with complex type that represents a
71 /// value l-value, this method emits the address of the l-value, then loads
72 /// and returns the result.
73 ComplexPairTy EmitLoadOfLValue(const Expr *E) {
74 return EmitLoadOfLValue(CGF.EmitLValue(E), E->getExprLoc());
77 ComplexPairTy EmitLoadOfLValue(LValue LV, SourceLocation Loc);
79 /// EmitStoreOfComplex - Store the specified real/imag parts into the
80 /// specified value pointer.
81 void EmitStoreOfComplex(ComplexPairTy Val, LValue LV, bool isInit);
83 /// Emit a cast from complex value Val to DestType.
84 ComplexPairTy EmitComplexToComplexCast(ComplexPairTy Val, QualType SrcType,
85 QualType DestType, SourceLocation Loc);
86 /// Emit a cast from scalar value Val to DestType.
87 ComplexPairTy EmitScalarToComplexCast(llvm::Value *Val, QualType SrcType,
88 QualType DestType, SourceLocation Loc);
90 //===--------------------------------------------------------------------===//
92 //===--------------------------------------------------------------------===//
94 ComplexPairTy Visit(Expr *E) {
95 ApplyDebugLocation DL(CGF, E);
96 return StmtVisitor<ComplexExprEmitter, ComplexPairTy>::Visit(E);
99 ComplexPairTy VisitStmt(Stmt *S) {
100 S->dump(CGF.getContext().getSourceManager());
101 llvm_unreachable("Stmt can't have complex result type!");
103 ComplexPairTy VisitExpr(Expr *S);
104 ComplexPairTy VisitParenExpr(ParenExpr *PE) { return Visit(PE->getSubExpr());}
105 ComplexPairTy VisitGenericSelectionExpr(GenericSelectionExpr *GE) {
106 return Visit(GE->getResultExpr());
108 ComplexPairTy VisitImaginaryLiteral(const ImaginaryLiteral *IL);
110 VisitSubstNonTypeTemplateParmExpr(SubstNonTypeTemplateParmExpr *PE) {
111 return Visit(PE->getReplacement());
113 ComplexPairTy VisitCoawaitExpr(CoawaitExpr *S) {
114 return CGF.EmitCoawaitExpr(*S).getComplexVal();
116 ComplexPairTy VisitCoyieldExpr(CoyieldExpr *S) {
117 return CGF.EmitCoyieldExpr(*S).getComplexVal();
119 ComplexPairTy VisitUnaryCoawait(const UnaryOperator *E) {
120 return Visit(E->getSubExpr());
123 ComplexPairTy emitConstant(const CodeGenFunction::ConstantEmission &Constant,
125 assert(Constant && "not a constant");
126 if (Constant.isReference())
127 return EmitLoadOfLValue(Constant.getReferenceLValue(CGF, E),
130 llvm::Constant *pair = Constant.getValue();
131 return ComplexPairTy(pair->getAggregateElement(0U),
132 pair->getAggregateElement(1U));
136 ComplexPairTy VisitDeclRefExpr(DeclRefExpr *E) {
137 if (CodeGenFunction::ConstantEmission Constant = CGF.tryEmitAsConstant(E))
138 return emitConstant(Constant, E);
139 return EmitLoadOfLValue(E);
141 ComplexPairTy VisitObjCIvarRefExpr(ObjCIvarRefExpr *E) {
142 return EmitLoadOfLValue(E);
144 ComplexPairTy VisitObjCMessageExpr(ObjCMessageExpr *E) {
145 return CGF.EmitObjCMessageExpr(E).getComplexVal();
147 ComplexPairTy VisitArraySubscriptExpr(Expr *E) { return EmitLoadOfLValue(E); }
148 ComplexPairTy VisitMemberExpr(MemberExpr *ME) {
149 if (CodeGenFunction::ConstantEmission Constant =
150 CGF.tryEmitAsConstant(ME)) {
151 CGF.EmitIgnoredExpr(ME->getBase());
152 return emitConstant(Constant, ME);
154 return EmitLoadOfLValue(ME);
156 ComplexPairTy VisitOpaqueValueExpr(OpaqueValueExpr *E) {
158 return EmitLoadOfLValue(CGF.getOpaqueLValueMapping(E), E->getExprLoc());
159 return CGF.getOpaqueRValueMapping(E).getComplexVal();
162 ComplexPairTy VisitPseudoObjectExpr(PseudoObjectExpr *E) {
163 return CGF.EmitPseudoObjectRValue(E).getComplexVal();
166 // FIXME: CompoundLiteralExpr
168 ComplexPairTy EmitCast(CastKind CK, Expr *Op, QualType DestTy);
169 ComplexPairTy VisitImplicitCastExpr(ImplicitCastExpr *E) {
170 // Unlike for scalars, we don't have to worry about function->ptr demotion
172 return EmitCast(E->getCastKind(), E->getSubExpr(), E->getType());
174 ComplexPairTy VisitCastExpr(CastExpr *E) {
175 if (const auto *ECE = dyn_cast<ExplicitCastExpr>(E))
176 CGF.CGM.EmitExplicitCastExprType(ECE, &CGF);
177 return EmitCast(E->getCastKind(), E->getSubExpr(), E->getType());
179 ComplexPairTy VisitCallExpr(const CallExpr *E);
180 ComplexPairTy VisitStmtExpr(const StmtExpr *E);
183 ComplexPairTy VisitPrePostIncDec(const UnaryOperator *E,
184 bool isInc, bool isPre) {
185 LValue LV = CGF.EmitLValue(E->getSubExpr());
186 return CGF.EmitComplexPrePostIncDec(E, LV, isInc, isPre);
188 ComplexPairTy VisitUnaryPostDec(const UnaryOperator *E) {
189 return VisitPrePostIncDec(E, false, false);
191 ComplexPairTy VisitUnaryPostInc(const UnaryOperator *E) {
192 return VisitPrePostIncDec(E, true, false);
194 ComplexPairTy VisitUnaryPreDec(const UnaryOperator *E) {
195 return VisitPrePostIncDec(E, false, true);
197 ComplexPairTy VisitUnaryPreInc(const UnaryOperator *E) {
198 return VisitPrePostIncDec(E, true, true);
200 ComplexPairTy VisitUnaryDeref(const Expr *E) { return EmitLoadOfLValue(E); }
201 ComplexPairTy VisitUnaryPlus (const UnaryOperator *E) {
202 TestAndClearIgnoreReal();
203 TestAndClearIgnoreImag();
204 return Visit(E->getSubExpr());
206 ComplexPairTy VisitUnaryMinus (const UnaryOperator *E);
207 ComplexPairTy VisitUnaryNot (const UnaryOperator *E);
208 // LNot,Real,Imag never return complex.
209 ComplexPairTy VisitUnaryExtension(const UnaryOperator *E) {
210 return Visit(E->getSubExpr());
212 ComplexPairTy VisitCXXDefaultArgExpr(CXXDefaultArgExpr *DAE) {
213 return Visit(DAE->getExpr());
215 ComplexPairTy VisitCXXDefaultInitExpr(CXXDefaultInitExpr *DIE) {
216 CodeGenFunction::CXXDefaultInitExprScope Scope(CGF);
217 return Visit(DIE->getExpr());
219 ComplexPairTy VisitExprWithCleanups(ExprWithCleanups *E) {
220 CGF.enterFullExpression(E);
221 CodeGenFunction::RunCleanupsScope Scope(CGF);
222 ComplexPairTy Vals = Visit(E->getSubExpr());
223 // Defend against dominance problems caused by jumps out of expression
224 // evaluation through the shared cleanup block.
225 Scope.ForceCleanup({&Vals.first, &Vals.second});
228 ComplexPairTy VisitCXXScalarValueInitExpr(CXXScalarValueInitExpr *E) {
229 assert(E->getType()->isAnyComplexType() && "Expected complex type!");
230 QualType Elem = E->getType()->castAs<ComplexType>()->getElementType();
231 llvm::Constant *Null = llvm::Constant::getNullValue(CGF.ConvertType(Elem));
232 return ComplexPairTy(Null, Null);
234 ComplexPairTy VisitImplicitValueInitExpr(ImplicitValueInitExpr *E) {
235 assert(E->getType()->isAnyComplexType() && "Expected complex type!");
236 QualType Elem = E->getType()->castAs<ComplexType>()->getElementType();
237 llvm::Constant *Null =
238 llvm::Constant::getNullValue(CGF.ConvertType(Elem));
239 return ComplexPairTy(Null, Null);
245 QualType Ty; // Computation Type.
248 BinOpInfo EmitBinOps(const BinaryOperator *E);
249 LValue EmitCompoundAssignLValue(const CompoundAssignOperator *E,
250 ComplexPairTy (ComplexExprEmitter::*Func)
253 ComplexPairTy EmitCompoundAssign(const CompoundAssignOperator *E,
254 ComplexPairTy (ComplexExprEmitter::*Func)
255 (const BinOpInfo &));
257 ComplexPairTy EmitBinAdd(const BinOpInfo &Op);
258 ComplexPairTy EmitBinSub(const BinOpInfo &Op);
259 ComplexPairTy EmitBinMul(const BinOpInfo &Op);
260 ComplexPairTy EmitBinDiv(const BinOpInfo &Op);
262 ComplexPairTy EmitComplexBinOpLibCall(StringRef LibCallName,
263 const BinOpInfo &Op);
265 ComplexPairTy VisitBinAdd(const BinaryOperator *E) {
266 return EmitBinAdd(EmitBinOps(E));
268 ComplexPairTy VisitBinSub(const BinaryOperator *E) {
269 return EmitBinSub(EmitBinOps(E));
271 ComplexPairTy VisitBinMul(const BinaryOperator *E) {
272 return EmitBinMul(EmitBinOps(E));
274 ComplexPairTy VisitBinDiv(const BinaryOperator *E) {
275 return EmitBinDiv(EmitBinOps(E));
278 // Compound assignments.
279 ComplexPairTy VisitBinAddAssign(const CompoundAssignOperator *E) {
280 return EmitCompoundAssign(E, &ComplexExprEmitter::EmitBinAdd);
282 ComplexPairTy VisitBinSubAssign(const CompoundAssignOperator *E) {
283 return EmitCompoundAssign(E, &ComplexExprEmitter::EmitBinSub);
285 ComplexPairTy VisitBinMulAssign(const CompoundAssignOperator *E) {
286 return EmitCompoundAssign(E, &ComplexExprEmitter::EmitBinMul);
288 ComplexPairTy VisitBinDivAssign(const CompoundAssignOperator *E) {
289 return EmitCompoundAssign(E, &ComplexExprEmitter::EmitBinDiv);
292 // GCC rejects rem/and/or/xor for integer complex.
293 // Logical and/or always return int, never complex.
295 // No comparisons produce a complex result.
297 LValue EmitBinAssignLValue(const BinaryOperator *E,
299 ComplexPairTy VisitBinAssign (const BinaryOperator *E);
300 ComplexPairTy VisitBinComma (const BinaryOperator *E);
304 VisitAbstractConditionalOperator(const AbstractConditionalOperator *CO);
305 ComplexPairTy VisitChooseExpr(ChooseExpr *CE);
307 ComplexPairTy VisitInitListExpr(InitListExpr *E);
309 ComplexPairTy VisitCompoundLiteralExpr(CompoundLiteralExpr *E) {
310 return EmitLoadOfLValue(E);
313 ComplexPairTy VisitVAArgExpr(VAArgExpr *E);
315 ComplexPairTy VisitAtomicExpr(AtomicExpr *E) {
316 return CGF.EmitAtomicExpr(E).getComplexVal();
319 } // end anonymous namespace.
321 //===----------------------------------------------------------------------===//
323 //===----------------------------------------------------------------------===//
325 Address CodeGenFunction::emitAddrOfRealComponent(Address addr,
326 QualType complexType) {
327 CharUnits offset = CharUnits::Zero();
328 return Builder.CreateStructGEP(addr, 0, offset, addr.getName() + ".realp");
331 Address CodeGenFunction::emitAddrOfImagComponent(Address addr,
332 QualType complexType) {
333 QualType eltType = complexType->castAs<ComplexType>()->getElementType();
334 CharUnits offset = getContext().getTypeSizeInChars(eltType);
335 return Builder.CreateStructGEP(addr, 1, offset, addr.getName() + ".imagp");
338 /// EmitLoadOfLValue - Given an RValue reference for a complex, emit code to
339 /// load the real and imaginary pieces, returning them as Real/Imag.
340 ComplexPairTy ComplexExprEmitter::EmitLoadOfLValue(LValue lvalue,
341 SourceLocation loc) {
342 assert(lvalue.isSimple() && "non-simple complex l-value?");
343 if (lvalue.getType()->isAtomicType())
344 return CGF.EmitAtomicLoad(lvalue, loc).getComplexVal();
346 Address SrcPtr = lvalue.getAddress();
347 bool isVolatile = lvalue.isVolatileQualified();
349 llvm::Value *Real = nullptr, *Imag = nullptr;
351 if (!IgnoreReal || isVolatile) {
352 Address RealP = CGF.emitAddrOfRealComponent(SrcPtr, lvalue.getType());
353 Real = Builder.CreateLoad(RealP, isVolatile, SrcPtr.getName() + ".real");
356 if (!IgnoreImag || isVolatile) {
357 Address ImagP = CGF.emitAddrOfImagComponent(SrcPtr, lvalue.getType());
358 Imag = Builder.CreateLoad(ImagP, isVolatile, SrcPtr.getName() + ".imag");
361 return ComplexPairTy(Real, Imag);
364 /// EmitStoreOfComplex - Store the specified real/imag parts into the
365 /// specified value pointer.
366 void ComplexExprEmitter::EmitStoreOfComplex(ComplexPairTy Val, LValue lvalue,
368 if (lvalue.getType()->isAtomicType() ||
369 (!isInit && CGF.LValueIsSuitableForInlineAtomic(lvalue)))
370 return CGF.EmitAtomicStore(RValue::getComplex(Val), lvalue, isInit);
372 Address Ptr = lvalue.getAddress();
373 Address RealPtr = CGF.emitAddrOfRealComponent(Ptr, lvalue.getType());
374 Address ImagPtr = CGF.emitAddrOfImagComponent(Ptr, lvalue.getType());
376 Builder.CreateStore(Val.first, RealPtr, lvalue.isVolatileQualified());
377 Builder.CreateStore(Val.second, ImagPtr, lvalue.isVolatileQualified());
382 //===----------------------------------------------------------------------===//
384 //===----------------------------------------------------------------------===//
386 ComplexPairTy ComplexExprEmitter::VisitExpr(Expr *E) {
387 CGF.ErrorUnsupported(E, "complex expression");
389 CGF.ConvertType(getComplexType(E->getType())->getElementType());
390 llvm::Value *U = llvm::UndefValue::get(EltTy);
391 return ComplexPairTy(U, U);
394 ComplexPairTy ComplexExprEmitter::
395 VisitImaginaryLiteral(const ImaginaryLiteral *IL) {
396 llvm::Value *Imag = CGF.EmitScalarExpr(IL->getSubExpr());
397 return ComplexPairTy(llvm::Constant::getNullValue(Imag->getType()), Imag);
401 ComplexPairTy ComplexExprEmitter::VisitCallExpr(const CallExpr *E) {
402 if (E->getCallReturnType(CGF.getContext())->isReferenceType())
403 return EmitLoadOfLValue(E);
405 return CGF.EmitCallExpr(E).getComplexVal();
408 ComplexPairTy ComplexExprEmitter::VisitStmtExpr(const StmtExpr *E) {
409 CodeGenFunction::StmtExprEvaluation eval(CGF);
410 Address RetAlloca = CGF.EmitCompoundStmt(*E->getSubStmt(), true);
411 assert(RetAlloca.isValid() && "Expected complex return value");
412 return EmitLoadOfLValue(CGF.MakeAddrLValue(RetAlloca, E->getType()),
416 /// Emit a cast from complex value Val to DestType.
417 ComplexPairTy ComplexExprEmitter::EmitComplexToComplexCast(ComplexPairTy Val,
420 SourceLocation Loc) {
421 // Get the src/dest element type.
422 SrcType = SrcType->castAs<ComplexType>()->getElementType();
423 DestType = DestType->castAs<ComplexType>()->getElementType();
425 // C99 6.3.1.6: When a value of complex type is converted to another
426 // complex type, both the real and imaginary parts follow the conversion
427 // rules for the corresponding real types.
428 Val.first = CGF.EmitScalarConversion(Val.first, SrcType, DestType, Loc);
429 Val.second = CGF.EmitScalarConversion(Val.second, SrcType, DestType, Loc);
433 ComplexPairTy ComplexExprEmitter::EmitScalarToComplexCast(llvm::Value *Val,
436 SourceLocation Loc) {
437 // Convert the input element to the element type of the complex.
438 DestType = DestType->castAs<ComplexType>()->getElementType();
439 Val = CGF.EmitScalarConversion(Val, SrcType, DestType, Loc);
441 // Return (realval, 0).
442 return ComplexPairTy(Val, llvm::Constant::getNullValue(Val->getType()));
445 ComplexPairTy ComplexExprEmitter::EmitCast(CastKind CK, Expr *Op,
448 case CK_Dependent: llvm_unreachable("dependent cast kind in IR gen!");
450 // Atomic to non-atomic casts may be more than a no-op for some platforms and
452 case CK_AtomicToNonAtomic:
453 case CK_NonAtomicToAtomic:
455 case CK_LValueToRValue:
456 case CK_UserDefinedConversion:
459 case CK_LValueBitCast: {
460 LValue origLV = CGF.EmitLValue(Op);
461 Address V = origLV.getAddress();
462 V = Builder.CreateElementBitCast(V, CGF.ConvertType(DestTy));
463 return EmitLoadOfLValue(CGF.MakeAddrLValue(V, DestTy), Op->getExprLoc());
467 case CK_BaseToDerived:
468 case CK_DerivedToBase:
469 case CK_UncheckedDerivedToBase:
472 case CK_ArrayToPointerDecay:
473 case CK_FunctionToPointerDecay:
474 case CK_NullToPointer:
475 case CK_NullToMemberPointer:
476 case CK_BaseToDerivedMemberPointer:
477 case CK_DerivedToBaseMemberPointer:
478 case CK_MemberPointerToBoolean:
479 case CK_ReinterpretMemberPointer:
480 case CK_ConstructorConversion:
481 case CK_IntegralToPointer:
482 case CK_PointerToIntegral:
483 case CK_PointerToBoolean:
486 case CK_IntegralCast:
487 case CK_BooleanToSignedIntegral:
488 case CK_IntegralToBoolean:
489 case CK_IntegralToFloating:
490 case CK_FloatingToIntegral:
491 case CK_FloatingToBoolean:
492 case CK_FloatingCast:
493 case CK_CPointerToObjCPointerCast:
494 case CK_BlockPointerToObjCPointerCast:
495 case CK_AnyPointerToBlockPointerCast:
496 case CK_ObjCObjectLValueCast:
497 case CK_FloatingComplexToReal:
498 case CK_FloatingComplexToBoolean:
499 case CK_IntegralComplexToReal:
500 case CK_IntegralComplexToBoolean:
501 case CK_ARCProduceObject:
502 case CK_ARCConsumeObject:
503 case CK_ARCReclaimReturnedObject:
504 case CK_ARCExtendBlockObject:
505 case CK_CopyAndAutoreleaseBlockObject:
506 case CK_BuiltinFnToFnPtr:
507 case CK_ZeroToOCLEvent:
508 case CK_ZeroToOCLQueue:
509 case CK_AddressSpaceConversion:
510 case CK_IntToOCLSampler:
511 llvm_unreachable("invalid cast kind for complex value");
513 case CK_FloatingRealToComplex:
514 case CK_IntegralRealToComplex:
515 return EmitScalarToComplexCast(CGF.EmitScalarExpr(Op), Op->getType(),
516 DestTy, Op->getExprLoc());
518 case CK_FloatingComplexCast:
519 case CK_FloatingComplexToIntegralComplex:
520 case CK_IntegralComplexCast:
521 case CK_IntegralComplexToFloatingComplex:
522 return EmitComplexToComplexCast(Visit(Op), Op->getType(), DestTy,
526 llvm_unreachable("unknown cast resulting in complex value");
529 ComplexPairTy ComplexExprEmitter::VisitUnaryMinus(const UnaryOperator *E) {
530 TestAndClearIgnoreReal();
531 TestAndClearIgnoreImag();
532 ComplexPairTy Op = Visit(E->getSubExpr());
534 llvm::Value *ResR, *ResI;
535 if (Op.first->getType()->isFloatingPointTy()) {
536 ResR = Builder.CreateFNeg(Op.first, "neg.r");
537 ResI = Builder.CreateFNeg(Op.second, "neg.i");
539 ResR = Builder.CreateNeg(Op.first, "neg.r");
540 ResI = Builder.CreateNeg(Op.second, "neg.i");
542 return ComplexPairTy(ResR, ResI);
545 ComplexPairTy ComplexExprEmitter::VisitUnaryNot(const UnaryOperator *E) {
546 TestAndClearIgnoreReal();
547 TestAndClearIgnoreImag();
548 // ~(a+ib) = a + i*-b
549 ComplexPairTy Op = Visit(E->getSubExpr());
551 if (Op.second->getType()->isFloatingPointTy())
552 ResI = Builder.CreateFNeg(Op.second, "conj.i");
554 ResI = Builder.CreateNeg(Op.second, "conj.i");
556 return ComplexPairTy(Op.first, ResI);
559 ComplexPairTy ComplexExprEmitter::EmitBinAdd(const BinOpInfo &Op) {
560 llvm::Value *ResR, *ResI;
562 if (Op.LHS.first->getType()->isFloatingPointTy()) {
563 ResR = Builder.CreateFAdd(Op.LHS.first, Op.RHS.first, "add.r");
564 if (Op.LHS.second && Op.RHS.second)
565 ResI = Builder.CreateFAdd(Op.LHS.second, Op.RHS.second, "add.i");
567 ResI = Op.LHS.second ? Op.LHS.second : Op.RHS.second;
568 assert(ResI && "Only one operand may be real!");
570 ResR = Builder.CreateAdd(Op.LHS.first, Op.RHS.first, "add.r");
571 assert(Op.LHS.second && Op.RHS.second &&
572 "Both operands of integer complex operators must be complex!");
573 ResI = Builder.CreateAdd(Op.LHS.second, Op.RHS.second, "add.i");
575 return ComplexPairTy(ResR, ResI);
578 ComplexPairTy ComplexExprEmitter::EmitBinSub(const BinOpInfo &Op) {
579 llvm::Value *ResR, *ResI;
580 if (Op.LHS.first->getType()->isFloatingPointTy()) {
581 ResR = Builder.CreateFSub(Op.LHS.first, Op.RHS.first, "sub.r");
582 if (Op.LHS.second && Op.RHS.second)
583 ResI = Builder.CreateFSub(Op.LHS.second, Op.RHS.second, "sub.i");
585 ResI = Op.LHS.second ? Op.LHS.second
586 : Builder.CreateFNeg(Op.RHS.second, "sub.i");
587 assert(ResI && "Only one operand may be real!");
589 ResR = Builder.CreateSub(Op.LHS.first, Op.RHS.first, "sub.r");
590 assert(Op.LHS.second && Op.RHS.second &&
591 "Both operands of integer complex operators must be complex!");
592 ResI = Builder.CreateSub(Op.LHS.second, Op.RHS.second, "sub.i");
594 return ComplexPairTy(ResR, ResI);
597 /// \brief Emit a libcall for a binary operation on complex types.
598 ComplexPairTy ComplexExprEmitter::EmitComplexBinOpLibCall(StringRef LibCallName,
599 const BinOpInfo &Op) {
601 Args.add(RValue::get(Op.LHS.first),
602 Op.Ty->castAs<ComplexType>()->getElementType());
603 Args.add(RValue::get(Op.LHS.second),
604 Op.Ty->castAs<ComplexType>()->getElementType());
605 Args.add(RValue::get(Op.RHS.first),
606 Op.Ty->castAs<ComplexType>()->getElementType());
607 Args.add(RValue::get(Op.RHS.second),
608 Op.Ty->castAs<ComplexType>()->getElementType());
610 // We *must* use the full CG function call building logic here because the
611 // complex type has special ABI handling. We also should not forget about
612 // special calling convention which may be used for compiler builtins.
614 // We create a function qualified type to state that this call does not have
616 FunctionProtoType::ExtProtoInfo EPI;
617 EPI = EPI.withExceptionSpec(
618 FunctionProtoType::ExceptionSpecInfo(EST_BasicNoexcept));
619 SmallVector<QualType, 4> ArgsQTys(
620 4, Op.Ty->castAs<ComplexType>()->getElementType());
621 QualType FQTy = CGF.getContext().getFunctionType(Op.Ty, ArgsQTys, EPI);
622 const CGFunctionInfo &FuncInfo = CGF.CGM.getTypes().arrangeFreeFunctionCall(
623 Args, cast<FunctionType>(FQTy.getTypePtr()), false);
625 llvm::FunctionType *FTy = CGF.CGM.getTypes().GetFunctionType(FuncInfo);
626 llvm::Constant *Func = CGF.CGM.CreateBuiltinFunction(FTy, LibCallName);
627 CGCallee Callee = CGCallee::forDirect(Func, FQTy->getAs<FunctionProtoType>());
629 llvm::Instruction *Call;
630 RValue Res = CGF.EmitCall(FuncInfo, Callee, ReturnValueSlot(), Args, &Call);
631 cast<llvm::CallInst>(Call)->setCallingConv(CGF.CGM.getBuiltinCC());
632 return Res.getComplexVal();
635 /// \brief Lookup the libcall name for a given floating point type complex
637 static StringRef getComplexMultiplyLibCallName(llvm::Type *Ty) {
638 switch (Ty->getTypeID()) {
640 llvm_unreachable("Unsupported floating point type!");
641 case llvm::Type::HalfTyID:
643 case llvm::Type::FloatTyID:
645 case llvm::Type::DoubleTyID:
647 case llvm::Type::PPC_FP128TyID:
649 case llvm::Type::X86_FP80TyID:
651 case llvm::Type::FP128TyID:
656 // See C11 Annex G.5.1 for the semantics of multiplicative operators on complex
658 ComplexPairTy ComplexExprEmitter::EmitBinMul(const BinOpInfo &Op) {
661 llvm::MDBuilder MDHelper(CGF.getLLVMContext());
663 if (Op.LHS.first->getType()->isFloatingPointTy()) {
664 // The general formulation is:
665 // (a + ib) * (c + id) = (a * c - b * d) + i(a * d + b * c)
667 // But we can fold away components which would be zero due to a real
668 // operand according to C11 Annex G.5.1p2.
669 // FIXME: C11 also provides for imaginary types which would allow folding
670 // still more of this within the type system.
672 if (Op.LHS.second && Op.RHS.second) {
673 // If both operands are complex, emit the core math directly, and then
674 // test for NaNs. If we find NaNs in the result, we delegate to a libcall
675 // to carefully re-compute the correct infinity representation if
676 // possible. The expectation is that the presence of NaNs here is
677 // *extremely* rare, and so the cost of the libcall is almost irrelevant.
678 // This is good, because the libcall re-computes the core multiplication
679 // exactly the same as we do here and re-tests for NaNs in order to be
680 // a generic complex*complex libcall.
682 // First compute the four products.
683 Value *AC = Builder.CreateFMul(Op.LHS.first, Op.RHS.first, "mul_ac");
684 Value *BD = Builder.CreateFMul(Op.LHS.second, Op.RHS.second, "mul_bd");
685 Value *AD = Builder.CreateFMul(Op.LHS.first, Op.RHS.second, "mul_ad");
686 Value *BC = Builder.CreateFMul(Op.LHS.second, Op.RHS.first, "mul_bc");
688 // The real part is the difference of the first two, the imaginary part is
689 // the sum of the second.
690 ResR = Builder.CreateFSub(AC, BD, "mul_r");
691 ResI = Builder.CreateFAdd(AD, BC, "mul_i");
693 // Emit the test for the real part becoming NaN and create a branch to
694 // handle it. We test for NaN by comparing the number to itself.
695 Value *IsRNaN = Builder.CreateFCmpUNO(ResR, ResR, "isnan_cmp");
696 llvm::BasicBlock *ContBB = CGF.createBasicBlock("complex_mul_cont");
697 llvm::BasicBlock *INaNBB = CGF.createBasicBlock("complex_mul_imag_nan");
698 llvm::Instruction *Branch = Builder.CreateCondBr(IsRNaN, INaNBB, ContBB);
699 llvm::BasicBlock *OrigBB = Branch->getParent();
701 // Give hint that we very much don't expect to see NaNs.
702 // Value chosen to match UR_NONTAKEN_WEIGHT, see BranchProbabilityInfo.cpp
703 llvm::MDNode *BrWeight = MDHelper.createBranchWeights(1, (1U << 20) - 1);
704 Branch->setMetadata(llvm::LLVMContext::MD_prof, BrWeight);
706 // Now test the imaginary part and create its branch.
707 CGF.EmitBlock(INaNBB);
708 Value *IsINaN = Builder.CreateFCmpUNO(ResI, ResI, "isnan_cmp");
709 llvm::BasicBlock *LibCallBB = CGF.createBasicBlock("complex_mul_libcall");
710 Branch = Builder.CreateCondBr(IsINaN, LibCallBB, ContBB);
711 Branch->setMetadata(llvm::LLVMContext::MD_prof, BrWeight);
713 // Now emit the libcall on this slowest of the slow paths.
714 CGF.EmitBlock(LibCallBB);
715 Value *LibCallR, *LibCallI;
716 std::tie(LibCallR, LibCallI) = EmitComplexBinOpLibCall(
717 getComplexMultiplyLibCallName(Op.LHS.first->getType()), Op);
718 Builder.CreateBr(ContBB);
720 // Finally continue execution by phi-ing together the different
721 // computation paths.
722 CGF.EmitBlock(ContBB);
723 llvm::PHINode *RealPHI = Builder.CreatePHI(ResR->getType(), 3, "real_mul_phi");
724 RealPHI->addIncoming(ResR, OrigBB);
725 RealPHI->addIncoming(ResR, INaNBB);
726 RealPHI->addIncoming(LibCallR, LibCallBB);
727 llvm::PHINode *ImagPHI = Builder.CreatePHI(ResI->getType(), 3, "imag_mul_phi");
728 ImagPHI->addIncoming(ResI, OrigBB);
729 ImagPHI->addIncoming(ResI, INaNBB);
730 ImagPHI->addIncoming(LibCallI, LibCallBB);
731 return ComplexPairTy(RealPHI, ImagPHI);
733 assert((Op.LHS.second || Op.RHS.second) &&
734 "At least one operand must be complex!");
736 // If either of the operands is a real rather than a complex, the
737 // imaginary component is ignored when computing the real component of the
739 ResR = Builder.CreateFMul(Op.LHS.first, Op.RHS.first, "mul.rl");
742 ? Builder.CreateFMul(Op.LHS.second, Op.RHS.first, "mul.il")
743 : Builder.CreateFMul(Op.LHS.first, Op.RHS.second, "mul.ir");
745 assert(Op.LHS.second && Op.RHS.second &&
746 "Both operands of integer complex operators must be complex!");
747 Value *ResRl = Builder.CreateMul(Op.LHS.first, Op.RHS.first, "mul.rl");
748 Value *ResRr = Builder.CreateMul(Op.LHS.second, Op.RHS.second, "mul.rr");
749 ResR = Builder.CreateSub(ResRl, ResRr, "mul.r");
751 Value *ResIl = Builder.CreateMul(Op.LHS.second, Op.RHS.first, "mul.il");
752 Value *ResIr = Builder.CreateMul(Op.LHS.first, Op.RHS.second, "mul.ir");
753 ResI = Builder.CreateAdd(ResIl, ResIr, "mul.i");
755 return ComplexPairTy(ResR, ResI);
758 // See C11 Annex G.5.1 for the semantics of multiplicative operators on complex
760 ComplexPairTy ComplexExprEmitter::EmitBinDiv(const BinOpInfo &Op) {
761 llvm::Value *LHSr = Op.LHS.first, *LHSi = Op.LHS.second;
762 llvm::Value *RHSr = Op.RHS.first, *RHSi = Op.RHS.second;
764 llvm::Value *DSTr, *DSTi;
765 if (LHSr->getType()->isFloatingPointTy()) {
766 // If we have a complex operand on the RHS and FastMath is not allowed, we
767 // delegate to a libcall to handle all of the complexities and minimize
768 // underflow/overflow cases. When FastMath is allowed we construct the
769 // divide inline using the same algorithm as for integer operands.
771 // FIXME: We would be able to avoid the libcall in many places if we
772 // supported imaginary types in addition to complex types.
773 if (RHSi && !CGF.getLangOpts().FastMath) {
774 BinOpInfo LibCallOp = Op;
775 // If LHS was a real, supply a null imaginary part.
777 LibCallOp.LHS.second = llvm::Constant::getNullValue(LHSr->getType());
779 switch (LHSr->getType()->getTypeID()) {
781 llvm_unreachable("Unsupported floating point type!");
782 case llvm::Type::HalfTyID:
783 return EmitComplexBinOpLibCall("__divhc3", LibCallOp);
784 case llvm::Type::FloatTyID:
785 return EmitComplexBinOpLibCall("__divsc3", LibCallOp);
786 case llvm::Type::DoubleTyID:
787 return EmitComplexBinOpLibCall("__divdc3", LibCallOp);
788 case llvm::Type::PPC_FP128TyID:
789 return EmitComplexBinOpLibCall("__divtc3", LibCallOp);
790 case llvm::Type::X86_FP80TyID:
791 return EmitComplexBinOpLibCall("__divxc3", LibCallOp);
792 case llvm::Type::FP128TyID:
793 return EmitComplexBinOpLibCall("__divtc3", LibCallOp);
797 LHSi = llvm::Constant::getNullValue(RHSi->getType());
799 // (a+ib) / (c+id) = ((ac+bd)/(cc+dd)) + i((bc-ad)/(cc+dd))
800 llvm::Value *AC = Builder.CreateFMul(LHSr, RHSr); // a*c
801 llvm::Value *BD = Builder.CreateFMul(LHSi, RHSi); // b*d
802 llvm::Value *ACpBD = Builder.CreateFAdd(AC, BD); // ac+bd
804 llvm::Value *CC = Builder.CreateFMul(RHSr, RHSr); // c*c
805 llvm::Value *DD = Builder.CreateFMul(RHSi, RHSi); // d*d
806 llvm::Value *CCpDD = Builder.CreateFAdd(CC, DD); // cc+dd
808 llvm::Value *BC = Builder.CreateFMul(LHSi, RHSr); // b*c
809 llvm::Value *AD = Builder.CreateFMul(LHSr, RHSi); // a*d
810 llvm::Value *BCmAD = Builder.CreateFSub(BC, AD); // bc-ad
812 DSTr = Builder.CreateFDiv(ACpBD, CCpDD);
813 DSTi = Builder.CreateFDiv(BCmAD, CCpDD);
815 assert(LHSi && "Can have at most one non-complex operand!");
817 DSTr = Builder.CreateFDiv(LHSr, RHSr);
818 DSTi = Builder.CreateFDiv(LHSi, RHSr);
821 assert(Op.LHS.second && Op.RHS.second &&
822 "Both operands of integer complex operators must be complex!");
823 // (a+ib) / (c+id) = ((ac+bd)/(cc+dd)) + i((bc-ad)/(cc+dd))
824 llvm::Value *Tmp1 = Builder.CreateMul(LHSr, RHSr); // a*c
825 llvm::Value *Tmp2 = Builder.CreateMul(LHSi, RHSi); // b*d
826 llvm::Value *Tmp3 = Builder.CreateAdd(Tmp1, Tmp2); // ac+bd
828 llvm::Value *Tmp4 = Builder.CreateMul(RHSr, RHSr); // c*c
829 llvm::Value *Tmp5 = Builder.CreateMul(RHSi, RHSi); // d*d
830 llvm::Value *Tmp6 = Builder.CreateAdd(Tmp4, Tmp5); // cc+dd
832 llvm::Value *Tmp7 = Builder.CreateMul(LHSi, RHSr); // b*c
833 llvm::Value *Tmp8 = Builder.CreateMul(LHSr, RHSi); // a*d
834 llvm::Value *Tmp9 = Builder.CreateSub(Tmp7, Tmp8); // bc-ad
836 if (Op.Ty->castAs<ComplexType>()->getElementType()->isUnsignedIntegerType()) {
837 DSTr = Builder.CreateUDiv(Tmp3, Tmp6);
838 DSTi = Builder.CreateUDiv(Tmp9, Tmp6);
840 DSTr = Builder.CreateSDiv(Tmp3, Tmp6);
841 DSTi = Builder.CreateSDiv(Tmp9, Tmp6);
845 return ComplexPairTy(DSTr, DSTi);
848 ComplexExprEmitter::BinOpInfo
849 ComplexExprEmitter::EmitBinOps(const BinaryOperator *E) {
850 TestAndClearIgnoreReal();
851 TestAndClearIgnoreImag();
853 if (E->getLHS()->getType()->isRealFloatingType())
854 Ops.LHS = ComplexPairTy(CGF.EmitScalarExpr(E->getLHS()), nullptr);
856 Ops.LHS = Visit(E->getLHS());
857 if (E->getRHS()->getType()->isRealFloatingType())
858 Ops.RHS = ComplexPairTy(CGF.EmitScalarExpr(E->getRHS()), nullptr);
860 Ops.RHS = Visit(E->getRHS());
862 Ops.Ty = E->getType();
867 LValue ComplexExprEmitter::
868 EmitCompoundAssignLValue(const CompoundAssignOperator *E,
869 ComplexPairTy (ComplexExprEmitter::*Func)(const BinOpInfo&),
871 TestAndClearIgnoreReal();
872 TestAndClearIgnoreImag();
873 QualType LHSTy = E->getLHS()->getType();
874 if (const AtomicType *AT = LHSTy->getAs<AtomicType>())
875 LHSTy = AT->getValueType();
879 // Load the RHS and LHS operands.
880 // __block variables need to have the rhs evaluated first, plus this should
881 // improve codegen a little.
882 OpInfo.Ty = E->getComputationResultType();
883 QualType ComplexElementTy = cast<ComplexType>(OpInfo.Ty)->getElementType();
885 // The RHS should have been converted to the computation type.
886 if (E->getRHS()->getType()->isRealFloatingType()) {
889 .hasSameUnqualifiedType(ComplexElementTy, E->getRHS()->getType()));
890 OpInfo.RHS = ComplexPairTy(CGF.EmitScalarExpr(E->getRHS()), nullptr);
892 assert(CGF.getContext()
893 .hasSameUnqualifiedType(OpInfo.Ty, E->getRHS()->getType()));
894 OpInfo.RHS = Visit(E->getRHS());
897 LValue LHS = CGF.EmitLValue(E->getLHS());
899 // Load from the l-value and convert it.
900 SourceLocation Loc = E->getExprLoc();
901 if (LHSTy->isAnyComplexType()) {
902 ComplexPairTy LHSVal = EmitLoadOfLValue(LHS, Loc);
903 OpInfo.LHS = EmitComplexToComplexCast(LHSVal, LHSTy, OpInfo.Ty, Loc);
905 llvm::Value *LHSVal = CGF.EmitLoadOfScalar(LHS, Loc);
906 // For floating point real operands we can directly pass the scalar form
907 // to the binary operator emission and potentially get more efficient code.
908 if (LHSTy->isRealFloatingType()) {
909 if (!CGF.getContext().hasSameUnqualifiedType(ComplexElementTy, LHSTy))
910 LHSVal = CGF.EmitScalarConversion(LHSVal, LHSTy, ComplexElementTy, Loc);
911 OpInfo.LHS = ComplexPairTy(LHSVal, nullptr);
913 OpInfo.LHS = EmitScalarToComplexCast(LHSVal, LHSTy, OpInfo.Ty, Loc);
917 // Expand the binary operator.
918 ComplexPairTy Result = (this->*Func)(OpInfo);
920 // Truncate the result and store it into the LHS lvalue.
921 if (LHSTy->isAnyComplexType()) {
922 ComplexPairTy ResVal =
923 EmitComplexToComplexCast(Result, OpInfo.Ty, LHSTy, Loc);
924 EmitStoreOfComplex(ResVal, LHS, /*isInit*/ false);
925 Val = RValue::getComplex(ResVal);
927 llvm::Value *ResVal =
928 CGF.EmitComplexToScalarConversion(Result, OpInfo.Ty, LHSTy, Loc);
929 CGF.EmitStoreOfScalar(ResVal, LHS, /*isInit*/ false);
930 Val = RValue::get(ResVal);
936 // Compound assignments.
937 ComplexPairTy ComplexExprEmitter::
938 EmitCompoundAssign(const CompoundAssignOperator *E,
939 ComplexPairTy (ComplexExprEmitter::*Func)(const BinOpInfo&)){
941 LValue LV = EmitCompoundAssignLValue(E, Func, Val);
943 // The result of an assignment in C is the assigned r-value.
944 if (!CGF.getLangOpts().CPlusPlus)
945 return Val.getComplexVal();
947 // If the lvalue is non-volatile, return the computed value of the assignment.
948 if (!LV.isVolatileQualified())
949 return Val.getComplexVal();
951 return EmitLoadOfLValue(LV, E->getExprLoc());
954 LValue ComplexExprEmitter::EmitBinAssignLValue(const BinaryOperator *E,
955 ComplexPairTy &Val) {
956 assert(CGF.getContext().hasSameUnqualifiedType(E->getLHS()->getType(),
957 E->getRHS()->getType()) &&
958 "Invalid assignment");
959 TestAndClearIgnoreReal();
960 TestAndClearIgnoreImag();
962 // Emit the RHS. __block variables need the RHS evaluated first.
963 Val = Visit(E->getRHS());
965 // Compute the address to store into.
966 LValue LHS = CGF.EmitLValue(E->getLHS());
968 // Store the result value into the LHS lvalue.
969 EmitStoreOfComplex(Val, LHS, /*isInit*/ false);
974 ComplexPairTy ComplexExprEmitter::VisitBinAssign(const BinaryOperator *E) {
976 LValue LV = EmitBinAssignLValue(E, Val);
978 // The result of an assignment in C is the assigned r-value.
979 if (!CGF.getLangOpts().CPlusPlus)
982 // If the lvalue is non-volatile, return the computed value of the assignment.
983 if (!LV.isVolatileQualified())
986 return EmitLoadOfLValue(LV, E->getExprLoc());
989 ComplexPairTy ComplexExprEmitter::VisitBinComma(const BinaryOperator *E) {
990 CGF.EmitIgnoredExpr(E->getLHS());
991 return Visit(E->getRHS());
994 ComplexPairTy ComplexExprEmitter::
995 VisitAbstractConditionalOperator(const AbstractConditionalOperator *E) {
996 TestAndClearIgnoreReal();
997 TestAndClearIgnoreImag();
998 llvm::BasicBlock *LHSBlock = CGF.createBasicBlock("cond.true");
999 llvm::BasicBlock *RHSBlock = CGF.createBasicBlock("cond.false");
1000 llvm::BasicBlock *ContBlock = CGF.createBasicBlock("cond.end");
1002 // Bind the common expression if necessary.
1003 CodeGenFunction::OpaqueValueMapping binding(CGF, E);
1006 CodeGenFunction::ConditionalEvaluation eval(CGF);
1007 CGF.EmitBranchOnBoolExpr(E->getCond(), LHSBlock, RHSBlock,
1008 CGF.getProfileCount(E));
1011 CGF.EmitBlock(LHSBlock);
1012 CGF.incrementProfileCounter(E);
1013 ComplexPairTy LHS = Visit(E->getTrueExpr());
1014 LHSBlock = Builder.GetInsertBlock();
1015 CGF.EmitBranch(ContBlock);
1019 CGF.EmitBlock(RHSBlock);
1020 ComplexPairTy RHS = Visit(E->getFalseExpr());
1021 RHSBlock = Builder.GetInsertBlock();
1022 CGF.EmitBlock(ContBlock);
1025 // Create a PHI node for the real part.
1026 llvm::PHINode *RealPN = Builder.CreatePHI(LHS.first->getType(), 2, "cond.r");
1027 RealPN->addIncoming(LHS.first, LHSBlock);
1028 RealPN->addIncoming(RHS.first, RHSBlock);
1030 // Create a PHI node for the imaginary part.
1031 llvm::PHINode *ImagPN = Builder.CreatePHI(LHS.first->getType(), 2, "cond.i");
1032 ImagPN->addIncoming(LHS.second, LHSBlock);
1033 ImagPN->addIncoming(RHS.second, RHSBlock);
1035 return ComplexPairTy(RealPN, ImagPN);
1038 ComplexPairTy ComplexExprEmitter::VisitChooseExpr(ChooseExpr *E) {
1039 return Visit(E->getChosenSubExpr());
1042 ComplexPairTy ComplexExprEmitter::VisitInitListExpr(InitListExpr *E) {
1043 bool Ignore = TestAndClearIgnoreReal();
1045 assert (Ignore == false && "init list ignored");
1046 Ignore = TestAndClearIgnoreImag();
1048 assert (Ignore == false && "init list ignored");
1050 if (E->getNumInits() == 2) {
1051 llvm::Value *Real = CGF.EmitScalarExpr(E->getInit(0));
1052 llvm::Value *Imag = CGF.EmitScalarExpr(E->getInit(1));
1053 return ComplexPairTy(Real, Imag);
1054 } else if (E->getNumInits() == 1) {
1055 return Visit(E->getInit(0));
1058 // Empty init list intializes to null
1059 assert(E->getNumInits() == 0 && "Unexpected number of inits");
1060 QualType Ty = E->getType()->castAs<ComplexType>()->getElementType();
1061 llvm::Type* LTy = CGF.ConvertType(Ty);
1062 llvm::Value* zeroConstant = llvm::Constant::getNullValue(LTy);
1063 return ComplexPairTy(zeroConstant, zeroConstant);
1066 ComplexPairTy ComplexExprEmitter::VisitVAArgExpr(VAArgExpr *E) {
1067 Address ArgValue = Address::invalid();
1068 Address ArgPtr = CGF.EmitVAArg(E, ArgValue);
1070 if (!ArgPtr.isValid()) {
1071 CGF.ErrorUnsupported(E, "complex va_arg expression");
1073 CGF.ConvertType(E->getType()->castAs<ComplexType>()->getElementType());
1074 llvm::Value *U = llvm::UndefValue::get(EltTy);
1075 return ComplexPairTy(U, U);
1078 return EmitLoadOfLValue(CGF.MakeAddrLValue(ArgPtr, E->getType()),
1082 //===----------------------------------------------------------------------===//
1083 // Entry Point into this File
1084 //===----------------------------------------------------------------------===//
1086 /// EmitComplexExpr - Emit the computation of the specified expression of
1087 /// complex type, ignoring the result.
1088 ComplexPairTy CodeGenFunction::EmitComplexExpr(const Expr *E, bool IgnoreReal,
1090 assert(E && getComplexType(E->getType()) &&
1091 "Invalid complex expression to emit");
1093 return ComplexExprEmitter(*this, IgnoreReal, IgnoreImag)
1094 .Visit(const_cast<Expr *>(E));
1097 void CodeGenFunction::EmitComplexExprIntoLValue(const Expr *E, LValue dest,
1099 assert(E && getComplexType(E->getType()) &&
1100 "Invalid complex expression to emit");
1101 ComplexExprEmitter Emitter(*this);
1102 ComplexPairTy Val = Emitter.Visit(const_cast<Expr*>(E));
1103 Emitter.EmitStoreOfComplex(Val, dest, isInit);
1106 /// EmitStoreOfComplex - Store a complex number into the specified l-value.
1107 void CodeGenFunction::EmitStoreOfComplex(ComplexPairTy V, LValue dest,
1109 ComplexExprEmitter(*this).EmitStoreOfComplex(V, dest, isInit);
1112 /// EmitLoadOfComplex - Load a complex number from the specified address.
1113 ComplexPairTy CodeGenFunction::EmitLoadOfComplex(LValue src,
1114 SourceLocation loc) {
1115 return ComplexExprEmitter(*this).EmitLoadOfLValue(src, loc);
1118 LValue CodeGenFunction::EmitComplexAssignmentLValue(const BinaryOperator *E) {
1119 assert(E->getOpcode() == BO_Assign);
1120 ComplexPairTy Val; // ignored
1121 return ComplexExprEmitter(*this).EmitBinAssignLValue(E, Val);
1124 typedef ComplexPairTy (ComplexExprEmitter::*CompoundFunc)(
1125 const ComplexExprEmitter::BinOpInfo &);
1127 static CompoundFunc getComplexOp(BinaryOperatorKind Op) {
1129 case BO_MulAssign: return &ComplexExprEmitter::EmitBinMul;
1130 case BO_DivAssign: return &ComplexExprEmitter::EmitBinDiv;
1131 case BO_SubAssign: return &ComplexExprEmitter::EmitBinSub;
1132 case BO_AddAssign: return &ComplexExprEmitter::EmitBinAdd;
1134 llvm_unreachable("unexpected complex compound assignment");
1138 LValue CodeGenFunction::
1139 EmitComplexCompoundAssignmentLValue(const CompoundAssignOperator *E) {
1140 CompoundFunc Op = getComplexOp(E->getOpcode());
1142 return ComplexExprEmitter(*this).EmitCompoundAssignLValue(E, Op, Val);
1145 LValue CodeGenFunction::
1146 EmitScalarCompoundAssignWithComplex(const CompoundAssignOperator *E,
1147 llvm::Value *&Result) {
1148 CompoundFunc Op = getComplexOp(E->getOpcode());
1150 LValue Ret = ComplexExprEmitter(*this).EmitCompoundAssignLValue(E, Op, Val);
1151 Result = Val.getScalarVal();