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.getOrCreateOpaqueLValueMapping(E),
160 return CGF.getOrCreateOpaqueRValueMapping(E).getComplexVal();
163 ComplexPairTy VisitPseudoObjectExpr(PseudoObjectExpr *E) {
164 return CGF.EmitPseudoObjectRValue(E).getComplexVal();
167 // FIXME: CompoundLiteralExpr
169 ComplexPairTy EmitCast(CastKind CK, Expr *Op, QualType DestTy);
170 ComplexPairTy VisitImplicitCastExpr(ImplicitCastExpr *E) {
171 // Unlike for scalars, we don't have to worry about function->ptr demotion
173 return EmitCast(E->getCastKind(), E->getSubExpr(), E->getType());
175 ComplexPairTy VisitCastExpr(CastExpr *E) {
176 if (const auto *ECE = dyn_cast<ExplicitCastExpr>(E))
177 CGF.CGM.EmitExplicitCastExprType(ECE, &CGF);
178 return EmitCast(E->getCastKind(), E->getSubExpr(), E->getType());
180 ComplexPairTy VisitCallExpr(const CallExpr *E);
181 ComplexPairTy VisitStmtExpr(const StmtExpr *E);
184 ComplexPairTy VisitPrePostIncDec(const UnaryOperator *E,
185 bool isInc, bool isPre) {
186 LValue LV = CGF.EmitLValue(E->getSubExpr());
187 return CGF.EmitComplexPrePostIncDec(E, LV, isInc, isPre);
189 ComplexPairTy VisitUnaryPostDec(const UnaryOperator *E) {
190 return VisitPrePostIncDec(E, false, false);
192 ComplexPairTy VisitUnaryPostInc(const UnaryOperator *E) {
193 return VisitPrePostIncDec(E, true, false);
195 ComplexPairTy VisitUnaryPreDec(const UnaryOperator *E) {
196 return VisitPrePostIncDec(E, false, true);
198 ComplexPairTy VisitUnaryPreInc(const UnaryOperator *E) {
199 return VisitPrePostIncDec(E, true, true);
201 ComplexPairTy VisitUnaryDeref(const Expr *E) { return EmitLoadOfLValue(E); }
202 ComplexPairTy VisitUnaryPlus (const UnaryOperator *E) {
203 TestAndClearIgnoreReal();
204 TestAndClearIgnoreImag();
205 return Visit(E->getSubExpr());
207 ComplexPairTy VisitUnaryMinus (const UnaryOperator *E);
208 ComplexPairTy VisitUnaryNot (const UnaryOperator *E);
209 // LNot,Real,Imag never return complex.
210 ComplexPairTy VisitUnaryExtension(const UnaryOperator *E) {
211 return Visit(E->getSubExpr());
213 ComplexPairTy VisitCXXDefaultArgExpr(CXXDefaultArgExpr *DAE) {
214 return Visit(DAE->getExpr());
216 ComplexPairTy VisitCXXDefaultInitExpr(CXXDefaultInitExpr *DIE) {
217 CodeGenFunction::CXXDefaultInitExprScope Scope(CGF);
218 return Visit(DIE->getExpr());
220 ComplexPairTy VisitExprWithCleanups(ExprWithCleanups *E) {
221 CGF.enterFullExpression(E);
222 CodeGenFunction::RunCleanupsScope Scope(CGF);
223 ComplexPairTy Vals = Visit(E->getSubExpr());
224 // Defend against dominance problems caused by jumps out of expression
225 // evaluation through the shared cleanup block.
226 Scope.ForceCleanup({&Vals.first, &Vals.second});
229 ComplexPairTy VisitCXXScalarValueInitExpr(CXXScalarValueInitExpr *E) {
230 assert(E->getType()->isAnyComplexType() && "Expected complex type!");
231 QualType Elem = E->getType()->castAs<ComplexType>()->getElementType();
232 llvm::Constant *Null = llvm::Constant::getNullValue(CGF.ConvertType(Elem));
233 return ComplexPairTy(Null, Null);
235 ComplexPairTy VisitImplicitValueInitExpr(ImplicitValueInitExpr *E) {
236 assert(E->getType()->isAnyComplexType() && "Expected complex type!");
237 QualType Elem = E->getType()->castAs<ComplexType>()->getElementType();
238 llvm::Constant *Null =
239 llvm::Constant::getNullValue(CGF.ConvertType(Elem));
240 return ComplexPairTy(Null, Null);
246 QualType Ty; // Computation Type.
249 BinOpInfo EmitBinOps(const BinaryOperator *E);
250 LValue EmitCompoundAssignLValue(const CompoundAssignOperator *E,
251 ComplexPairTy (ComplexExprEmitter::*Func)
254 ComplexPairTy EmitCompoundAssign(const CompoundAssignOperator *E,
255 ComplexPairTy (ComplexExprEmitter::*Func)
256 (const BinOpInfo &));
258 ComplexPairTy EmitBinAdd(const BinOpInfo &Op);
259 ComplexPairTy EmitBinSub(const BinOpInfo &Op);
260 ComplexPairTy EmitBinMul(const BinOpInfo &Op);
261 ComplexPairTy EmitBinDiv(const BinOpInfo &Op);
263 ComplexPairTy EmitComplexBinOpLibCall(StringRef LibCallName,
264 const BinOpInfo &Op);
266 ComplexPairTy VisitBinAdd(const BinaryOperator *E) {
267 return EmitBinAdd(EmitBinOps(E));
269 ComplexPairTy VisitBinSub(const BinaryOperator *E) {
270 return EmitBinSub(EmitBinOps(E));
272 ComplexPairTy VisitBinMul(const BinaryOperator *E) {
273 return EmitBinMul(EmitBinOps(E));
275 ComplexPairTy VisitBinDiv(const BinaryOperator *E) {
276 return EmitBinDiv(EmitBinOps(E));
279 // Compound assignments.
280 ComplexPairTy VisitBinAddAssign(const CompoundAssignOperator *E) {
281 return EmitCompoundAssign(E, &ComplexExprEmitter::EmitBinAdd);
283 ComplexPairTy VisitBinSubAssign(const CompoundAssignOperator *E) {
284 return EmitCompoundAssign(E, &ComplexExprEmitter::EmitBinSub);
286 ComplexPairTy VisitBinMulAssign(const CompoundAssignOperator *E) {
287 return EmitCompoundAssign(E, &ComplexExprEmitter::EmitBinMul);
289 ComplexPairTy VisitBinDivAssign(const CompoundAssignOperator *E) {
290 return EmitCompoundAssign(E, &ComplexExprEmitter::EmitBinDiv);
293 // GCC rejects rem/and/or/xor for integer complex.
294 // Logical and/or always return int, never complex.
296 // No comparisons produce a complex result.
298 LValue EmitBinAssignLValue(const BinaryOperator *E,
300 ComplexPairTy VisitBinAssign (const BinaryOperator *E);
301 ComplexPairTy VisitBinComma (const BinaryOperator *E);
305 VisitAbstractConditionalOperator(const AbstractConditionalOperator *CO);
306 ComplexPairTy VisitChooseExpr(ChooseExpr *CE);
308 ComplexPairTy VisitInitListExpr(InitListExpr *E);
310 ComplexPairTy VisitCompoundLiteralExpr(CompoundLiteralExpr *E) {
311 return EmitLoadOfLValue(E);
314 ComplexPairTy VisitVAArgExpr(VAArgExpr *E);
316 ComplexPairTy VisitAtomicExpr(AtomicExpr *E) {
317 return CGF.EmitAtomicExpr(E).getComplexVal();
320 } // end anonymous namespace.
322 //===----------------------------------------------------------------------===//
324 //===----------------------------------------------------------------------===//
326 Address CodeGenFunction::emitAddrOfRealComponent(Address addr,
327 QualType complexType) {
328 CharUnits offset = CharUnits::Zero();
329 return Builder.CreateStructGEP(addr, 0, offset, addr.getName() + ".realp");
332 Address CodeGenFunction::emitAddrOfImagComponent(Address addr,
333 QualType complexType) {
334 QualType eltType = complexType->castAs<ComplexType>()->getElementType();
335 CharUnits offset = getContext().getTypeSizeInChars(eltType);
336 return Builder.CreateStructGEP(addr, 1, offset, addr.getName() + ".imagp");
339 /// EmitLoadOfLValue - Given an RValue reference for a complex, emit code to
340 /// load the real and imaginary pieces, returning them as Real/Imag.
341 ComplexPairTy ComplexExprEmitter::EmitLoadOfLValue(LValue lvalue,
342 SourceLocation loc) {
343 assert(lvalue.isSimple() && "non-simple complex l-value?");
344 if (lvalue.getType()->isAtomicType())
345 return CGF.EmitAtomicLoad(lvalue, loc).getComplexVal();
347 Address SrcPtr = lvalue.getAddress();
348 bool isVolatile = lvalue.isVolatileQualified();
350 llvm::Value *Real = nullptr, *Imag = nullptr;
352 if (!IgnoreReal || isVolatile) {
353 Address RealP = CGF.emitAddrOfRealComponent(SrcPtr, lvalue.getType());
354 Real = Builder.CreateLoad(RealP, isVolatile, SrcPtr.getName() + ".real");
357 if (!IgnoreImag || isVolatile) {
358 Address ImagP = CGF.emitAddrOfImagComponent(SrcPtr, lvalue.getType());
359 Imag = Builder.CreateLoad(ImagP, isVolatile, SrcPtr.getName() + ".imag");
362 return ComplexPairTy(Real, Imag);
365 /// EmitStoreOfComplex - Store the specified real/imag parts into the
366 /// specified value pointer.
367 void ComplexExprEmitter::EmitStoreOfComplex(ComplexPairTy Val, LValue lvalue,
369 if (lvalue.getType()->isAtomicType() ||
370 (!isInit && CGF.LValueIsSuitableForInlineAtomic(lvalue)))
371 return CGF.EmitAtomicStore(RValue::getComplex(Val), lvalue, isInit);
373 Address Ptr = lvalue.getAddress();
374 Address RealPtr = CGF.emitAddrOfRealComponent(Ptr, lvalue.getType());
375 Address ImagPtr = CGF.emitAddrOfImagComponent(Ptr, lvalue.getType());
377 Builder.CreateStore(Val.first, RealPtr, lvalue.isVolatileQualified());
378 Builder.CreateStore(Val.second, ImagPtr, lvalue.isVolatileQualified());
383 //===----------------------------------------------------------------------===//
385 //===----------------------------------------------------------------------===//
387 ComplexPairTy ComplexExprEmitter::VisitExpr(Expr *E) {
388 CGF.ErrorUnsupported(E, "complex expression");
390 CGF.ConvertType(getComplexType(E->getType())->getElementType());
391 llvm::Value *U = llvm::UndefValue::get(EltTy);
392 return ComplexPairTy(U, U);
395 ComplexPairTy ComplexExprEmitter::
396 VisitImaginaryLiteral(const ImaginaryLiteral *IL) {
397 llvm::Value *Imag = CGF.EmitScalarExpr(IL->getSubExpr());
398 return ComplexPairTy(llvm::Constant::getNullValue(Imag->getType()), Imag);
402 ComplexPairTy ComplexExprEmitter::VisitCallExpr(const CallExpr *E) {
403 if (E->getCallReturnType(CGF.getContext())->isReferenceType())
404 return EmitLoadOfLValue(E);
406 return CGF.EmitCallExpr(E).getComplexVal();
409 ComplexPairTy ComplexExprEmitter::VisitStmtExpr(const StmtExpr *E) {
410 CodeGenFunction::StmtExprEvaluation eval(CGF);
411 Address RetAlloca = CGF.EmitCompoundStmt(*E->getSubStmt(), true);
412 assert(RetAlloca.isValid() && "Expected complex return value");
413 return EmitLoadOfLValue(CGF.MakeAddrLValue(RetAlloca, E->getType()),
417 /// Emit a cast from complex value Val to DestType.
418 ComplexPairTy ComplexExprEmitter::EmitComplexToComplexCast(ComplexPairTy Val,
421 SourceLocation Loc) {
422 // Get the src/dest element type.
423 SrcType = SrcType->castAs<ComplexType>()->getElementType();
424 DestType = DestType->castAs<ComplexType>()->getElementType();
426 // C99 6.3.1.6: When a value of complex type is converted to another
427 // complex type, both the real and imaginary parts follow the conversion
428 // rules for the corresponding real types.
429 Val.first = CGF.EmitScalarConversion(Val.first, SrcType, DestType, Loc);
430 Val.second = CGF.EmitScalarConversion(Val.second, SrcType, DestType, Loc);
434 ComplexPairTy ComplexExprEmitter::EmitScalarToComplexCast(llvm::Value *Val,
437 SourceLocation Loc) {
438 // Convert the input element to the element type of the complex.
439 DestType = DestType->castAs<ComplexType>()->getElementType();
440 Val = CGF.EmitScalarConversion(Val, SrcType, DestType, Loc);
442 // Return (realval, 0).
443 return ComplexPairTy(Val, llvm::Constant::getNullValue(Val->getType()));
446 ComplexPairTy ComplexExprEmitter::EmitCast(CastKind CK, Expr *Op,
449 case CK_Dependent: llvm_unreachable("dependent cast kind in IR gen!");
451 // Atomic to non-atomic casts may be more than a no-op for some platforms and
453 case CK_AtomicToNonAtomic:
454 case CK_NonAtomicToAtomic:
456 case CK_LValueToRValue:
457 case CK_UserDefinedConversion:
460 case CK_LValueBitCast: {
461 LValue origLV = CGF.EmitLValue(Op);
462 Address V = origLV.getAddress();
463 V = Builder.CreateElementBitCast(V, CGF.ConvertType(DestTy));
464 return EmitLoadOfLValue(CGF.MakeAddrLValue(V, DestTy), Op->getExprLoc());
468 case CK_BaseToDerived:
469 case CK_DerivedToBase:
470 case CK_UncheckedDerivedToBase:
473 case CK_ArrayToPointerDecay:
474 case CK_FunctionToPointerDecay:
475 case CK_NullToPointer:
476 case CK_NullToMemberPointer:
477 case CK_BaseToDerivedMemberPointer:
478 case CK_DerivedToBaseMemberPointer:
479 case CK_MemberPointerToBoolean:
480 case CK_ReinterpretMemberPointer:
481 case CK_ConstructorConversion:
482 case CK_IntegralToPointer:
483 case CK_PointerToIntegral:
484 case CK_PointerToBoolean:
487 case CK_IntegralCast:
488 case CK_BooleanToSignedIntegral:
489 case CK_IntegralToBoolean:
490 case CK_IntegralToFloating:
491 case CK_FloatingToIntegral:
492 case CK_FloatingToBoolean:
493 case CK_FloatingCast:
494 case CK_CPointerToObjCPointerCast:
495 case CK_BlockPointerToObjCPointerCast:
496 case CK_AnyPointerToBlockPointerCast:
497 case CK_ObjCObjectLValueCast:
498 case CK_FloatingComplexToReal:
499 case CK_FloatingComplexToBoolean:
500 case CK_IntegralComplexToReal:
501 case CK_IntegralComplexToBoolean:
502 case CK_ARCProduceObject:
503 case CK_ARCConsumeObject:
504 case CK_ARCReclaimReturnedObject:
505 case CK_ARCExtendBlockObject:
506 case CK_CopyAndAutoreleaseBlockObject:
507 case CK_BuiltinFnToFnPtr:
508 case CK_ZeroToOCLEvent:
509 case CK_ZeroToOCLQueue:
510 case CK_AddressSpaceConversion:
511 case CK_IntToOCLSampler:
512 llvm_unreachable("invalid cast kind for complex value");
514 case CK_FloatingRealToComplex:
515 case CK_IntegralRealToComplex:
516 return EmitScalarToComplexCast(CGF.EmitScalarExpr(Op), Op->getType(),
517 DestTy, Op->getExprLoc());
519 case CK_FloatingComplexCast:
520 case CK_FloatingComplexToIntegralComplex:
521 case CK_IntegralComplexCast:
522 case CK_IntegralComplexToFloatingComplex:
523 return EmitComplexToComplexCast(Visit(Op), Op->getType(), DestTy,
527 llvm_unreachable("unknown cast resulting in complex value");
530 ComplexPairTy ComplexExprEmitter::VisitUnaryMinus(const UnaryOperator *E) {
531 TestAndClearIgnoreReal();
532 TestAndClearIgnoreImag();
533 ComplexPairTy Op = Visit(E->getSubExpr());
535 llvm::Value *ResR, *ResI;
536 if (Op.first->getType()->isFloatingPointTy()) {
537 ResR = Builder.CreateFNeg(Op.first, "neg.r");
538 ResI = Builder.CreateFNeg(Op.second, "neg.i");
540 ResR = Builder.CreateNeg(Op.first, "neg.r");
541 ResI = Builder.CreateNeg(Op.second, "neg.i");
543 return ComplexPairTy(ResR, ResI);
546 ComplexPairTy ComplexExprEmitter::VisitUnaryNot(const UnaryOperator *E) {
547 TestAndClearIgnoreReal();
548 TestAndClearIgnoreImag();
549 // ~(a+ib) = a + i*-b
550 ComplexPairTy Op = Visit(E->getSubExpr());
552 if (Op.second->getType()->isFloatingPointTy())
553 ResI = Builder.CreateFNeg(Op.second, "conj.i");
555 ResI = Builder.CreateNeg(Op.second, "conj.i");
557 return ComplexPairTy(Op.first, ResI);
560 ComplexPairTy ComplexExprEmitter::EmitBinAdd(const BinOpInfo &Op) {
561 llvm::Value *ResR, *ResI;
563 if (Op.LHS.first->getType()->isFloatingPointTy()) {
564 ResR = Builder.CreateFAdd(Op.LHS.first, Op.RHS.first, "add.r");
565 if (Op.LHS.second && Op.RHS.second)
566 ResI = Builder.CreateFAdd(Op.LHS.second, Op.RHS.second, "add.i");
568 ResI = Op.LHS.second ? Op.LHS.second : Op.RHS.second;
569 assert(ResI && "Only one operand may be real!");
571 ResR = Builder.CreateAdd(Op.LHS.first, Op.RHS.first, "add.r");
572 assert(Op.LHS.second && Op.RHS.second &&
573 "Both operands of integer complex operators must be complex!");
574 ResI = Builder.CreateAdd(Op.LHS.second, Op.RHS.second, "add.i");
576 return ComplexPairTy(ResR, ResI);
579 ComplexPairTy ComplexExprEmitter::EmitBinSub(const BinOpInfo &Op) {
580 llvm::Value *ResR, *ResI;
581 if (Op.LHS.first->getType()->isFloatingPointTy()) {
582 ResR = Builder.CreateFSub(Op.LHS.first, Op.RHS.first, "sub.r");
583 if (Op.LHS.second && Op.RHS.second)
584 ResI = Builder.CreateFSub(Op.LHS.second, Op.RHS.second, "sub.i");
586 ResI = Op.LHS.second ? Op.LHS.second
587 : Builder.CreateFNeg(Op.RHS.second, "sub.i");
588 assert(ResI && "Only one operand may be real!");
590 ResR = Builder.CreateSub(Op.LHS.first, Op.RHS.first, "sub.r");
591 assert(Op.LHS.second && Op.RHS.second &&
592 "Both operands of integer complex operators must be complex!");
593 ResI = Builder.CreateSub(Op.LHS.second, Op.RHS.second, "sub.i");
595 return ComplexPairTy(ResR, ResI);
598 /// Emit a libcall for a binary operation on complex types.
599 ComplexPairTy ComplexExprEmitter::EmitComplexBinOpLibCall(StringRef LibCallName,
600 const BinOpInfo &Op) {
602 Args.add(RValue::get(Op.LHS.first),
603 Op.Ty->castAs<ComplexType>()->getElementType());
604 Args.add(RValue::get(Op.LHS.second),
605 Op.Ty->castAs<ComplexType>()->getElementType());
606 Args.add(RValue::get(Op.RHS.first),
607 Op.Ty->castAs<ComplexType>()->getElementType());
608 Args.add(RValue::get(Op.RHS.second),
609 Op.Ty->castAs<ComplexType>()->getElementType());
611 // We *must* use the full CG function call building logic here because the
612 // complex type has special ABI handling. We also should not forget about
613 // special calling convention which may be used for compiler builtins.
615 // We create a function qualified type to state that this call does not have
617 FunctionProtoType::ExtProtoInfo EPI;
618 EPI = EPI.withExceptionSpec(
619 FunctionProtoType::ExceptionSpecInfo(EST_BasicNoexcept));
620 SmallVector<QualType, 4> ArgsQTys(
621 4, Op.Ty->castAs<ComplexType>()->getElementType());
622 QualType FQTy = CGF.getContext().getFunctionType(Op.Ty, ArgsQTys, EPI);
623 const CGFunctionInfo &FuncInfo = CGF.CGM.getTypes().arrangeFreeFunctionCall(
624 Args, cast<FunctionType>(FQTy.getTypePtr()), false);
626 llvm::FunctionType *FTy = CGF.CGM.getTypes().GetFunctionType(FuncInfo);
627 llvm::Constant *Func = CGF.CGM.CreateBuiltinFunction(FTy, LibCallName);
628 CGCallee Callee = CGCallee::forDirect(Func, FQTy->getAs<FunctionProtoType>());
630 llvm::Instruction *Call;
631 RValue Res = CGF.EmitCall(FuncInfo, Callee, ReturnValueSlot(), Args, &Call);
632 cast<llvm::CallInst>(Call)->setCallingConv(CGF.CGM.getRuntimeCC());
633 return Res.getComplexVal();
636 /// Lookup the libcall name for a given floating point type complex
638 static StringRef getComplexMultiplyLibCallName(llvm::Type *Ty) {
639 switch (Ty->getTypeID()) {
641 llvm_unreachable("Unsupported floating point type!");
642 case llvm::Type::HalfTyID:
644 case llvm::Type::FloatTyID:
646 case llvm::Type::DoubleTyID:
648 case llvm::Type::PPC_FP128TyID:
650 case llvm::Type::X86_FP80TyID:
652 case llvm::Type::FP128TyID:
657 // See C11 Annex G.5.1 for the semantics of multiplicative operators on complex
659 ComplexPairTy ComplexExprEmitter::EmitBinMul(const BinOpInfo &Op) {
662 llvm::MDBuilder MDHelper(CGF.getLLVMContext());
664 if (Op.LHS.first->getType()->isFloatingPointTy()) {
665 // The general formulation is:
666 // (a + ib) * (c + id) = (a * c - b * d) + i(a * d + b * c)
668 // But we can fold away components which would be zero due to a real
669 // operand according to C11 Annex G.5.1p2.
670 // FIXME: C11 also provides for imaginary types which would allow folding
671 // still more of this within the type system.
673 if (Op.LHS.second && Op.RHS.second) {
674 // If both operands are complex, emit the core math directly, and then
675 // test for NaNs. If we find NaNs in the result, we delegate to a libcall
676 // to carefully re-compute the correct infinity representation if
677 // possible. The expectation is that the presence of NaNs here is
678 // *extremely* rare, and so the cost of the libcall is almost irrelevant.
679 // This is good, because the libcall re-computes the core multiplication
680 // exactly the same as we do here and re-tests for NaNs in order to be
681 // a generic complex*complex libcall.
683 // First compute the four products.
684 Value *AC = Builder.CreateFMul(Op.LHS.first, Op.RHS.first, "mul_ac");
685 Value *BD = Builder.CreateFMul(Op.LHS.second, Op.RHS.second, "mul_bd");
686 Value *AD = Builder.CreateFMul(Op.LHS.first, Op.RHS.second, "mul_ad");
687 Value *BC = Builder.CreateFMul(Op.LHS.second, Op.RHS.first, "mul_bc");
689 // The real part is the difference of the first two, the imaginary part is
690 // the sum of the second.
691 ResR = Builder.CreateFSub(AC, BD, "mul_r");
692 ResI = Builder.CreateFAdd(AD, BC, "mul_i");
694 // Emit the test for the real part becoming NaN and create a branch to
695 // handle it. We test for NaN by comparing the number to itself.
696 Value *IsRNaN = Builder.CreateFCmpUNO(ResR, ResR, "isnan_cmp");
697 llvm::BasicBlock *ContBB = CGF.createBasicBlock("complex_mul_cont");
698 llvm::BasicBlock *INaNBB = CGF.createBasicBlock("complex_mul_imag_nan");
699 llvm::Instruction *Branch = Builder.CreateCondBr(IsRNaN, INaNBB, ContBB);
700 llvm::BasicBlock *OrigBB = Branch->getParent();
702 // Give hint that we very much don't expect to see NaNs.
703 // Value chosen to match UR_NONTAKEN_WEIGHT, see BranchProbabilityInfo.cpp
704 llvm::MDNode *BrWeight = MDHelper.createBranchWeights(1, (1U << 20) - 1);
705 Branch->setMetadata(llvm::LLVMContext::MD_prof, BrWeight);
707 // Now test the imaginary part and create its branch.
708 CGF.EmitBlock(INaNBB);
709 Value *IsINaN = Builder.CreateFCmpUNO(ResI, ResI, "isnan_cmp");
710 llvm::BasicBlock *LibCallBB = CGF.createBasicBlock("complex_mul_libcall");
711 Branch = Builder.CreateCondBr(IsINaN, LibCallBB, ContBB);
712 Branch->setMetadata(llvm::LLVMContext::MD_prof, BrWeight);
714 // Now emit the libcall on this slowest of the slow paths.
715 CGF.EmitBlock(LibCallBB);
716 Value *LibCallR, *LibCallI;
717 std::tie(LibCallR, LibCallI) = EmitComplexBinOpLibCall(
718 getComplexMultiplyLibCallName(Op.LHS.first->getType()), Op);
719 Builder.CreateBr(ContBB);
721 // Finally continue execution by phi-ing together the different
722 // computation paths.
723 CGF.EmitBlock(ContBB);
724 llvm::PHINode *RealPHI = Builder.CreatePHI(ResR->getType(), 3, "real_mul_phi");
725 RealPHI->addIncoming(ResR, OrigBB);
726 RealPHI->addIncoming(ResR, INaNBB);
727 RealPHI->addIncoming(LibCallR, LibCallBB);
728 llvm::PHINode *ImagPHI = Builder.CreatePHI(ResI->getType(), 3, "imag_mul_phi");
729 ImagPHI->addIncoming(ResI, OrigBB);
730 ImagPHI->addIncoming(ResI, INaNBB);
731 ImagPHI->addIncoming(LibCallI, LibCallBB);
732 return ComplexPairTy(RealPHI, ImagPHI);
734 assert((Op.LHS.second || Op.RHS.second) &&
735 "At least one operand must be complex!");
737 // If either of the operands is a real rather than a complex, the
738 // imaginary component is ignored when computing the real component of the
740 ResR = Builder.CreateFMul(Op.LHS.first, Op.RHS.first, "mul.rl");
743 ? Builder.CreateFMul(Op.LHS.second, Op.RHS.first, "mul.il")
744 : Builder.CreateFMul(Op.LHS.first, Op.RHS.second, "mul.ir");
746 assert(Op.LHS.second && Op.RHS.second &&
747 "Both operands of integer complex operators must be complex!");
748 Value *ResRl = Builder.CreateMul(Op.LHS.first, Op.RHS.first, "mul.rl");
749 Value *ResRr = Builder.CreateMul(Op.LHS.second, Op.RHS.second, "mul.rr");
750 ResR = Builder.CreateSub(ResRl, ResRr, "mul.r");
752 Value *ResIl = Builder.CreateMul(Op.LHS.second, Op.RHS.first, "mul.il");
753 Value *ResIr = Builder.CreateMul(Op.LHS.first, Op.RHS.second, "mul.ir");
754 ResI = Builder.CreateAdd(ResIl, ResIr, "mul.i");
756 return ComplexPairTy(ResR, ResI);
759 // See C11 Annex G.5.1 for the semantics of multiplicative operators on complex
761 ComplexPairTy ComplexExprEmitter::EmitBinDiv(const BinOpInfo &Op) {
762 llvm::Value *LHSr = Op.LHS.first, *LHSi = Op.LHS.second;
763 llvm::Value *RHSr = Op.RHS.first, *RHSi = Op.RHS.second;
765 llvm::Value *DSTr, *DSTi;
766 if (LHSr->getType()->isFloatingPointTy()) {
767 // If we have a complex operand on the RHS and FastMath is not allowed, we
768 // delegate to a libcall to handle all of the complexities and minimize
769 // underflow/overflow cases. When FastMath is allowed we construct the
770 // divide inline using the same algorithm as for integer operands.
772 // FIXME: We would be able to avoid the libcall in many places if we
773 // supported imaginary types in addition to complex types.
774 if (RHSi && !CGF.getLangOpts().FastMath) {
775 BinOpInfo LibCallOp = Op;
776 // If LHS was a real, supply a null imaginary part.
778 LibCallOp.LHS.second = llvm::Constant::getNullValue(LHSr->getType());
780 switch (LHSr->getType()->getTypeID()) {
782 llvm_unreachable("Unsupported floating point type!");
783 case llvm::Type::HalfTyID:
784 return EmitComplexBinOpLibCall("__divhc3", LibCallOp);
785 case llvm::Type::FloatTyID:
786 return EmitComplexBinOpLibCall("__divsc3", LibCallOp);
787 case llvm::Type::DoubleTyID:
788 return EmitComplexBinOpLibCall("__divdc3", LibCallOp);
789 case llvm::Type::PPC_FP128TyID:
790 return EmitComplexBinOpLibCall("__divtc3", LibCallOp);
791 case llvm::Type::X86_FP80TyID:
792 return EmitComplexBinOpLibCall("__divxc3", LibCallOp);
793 case llvm::Type::FP128TyID:
794 return EmitComplexBinOpLibCall("__divtc3", LibCallOp);
798 LHSi = llvm::Constant::getNullValue(RHSi->getType());
800 // (a+ib) / (c+id) = ((ac+bd)/(cc+dd)) + i((bc-ad)/(cc+dd))
801 llvm::Value *AC = Builder.CreateFMul(LHSr, RHSr); // a*c
802 llvm::Value *BD = Builder.CreateFMul(LHSi, RHSi); // b*d
803 llvm::Value *ACpBD = Builder.CreateFAdd(AC, BD); // ac+bd
805 llvm::Value *CC = Builder.CreateFMul(RHSr, RHSr); // c*c
806 llvm::Value *DD = Builder.CreateFMul(RHSi, RHSi); // d*d
807 llvm::Value *CCpDD = Builder.CreateFAdd(CC, DD); // cc+dd
809 llvm::Value *BC = Builder.CreateFMul(LHSi, RHSr); // b*c
810 llvm::Value *AD = Builder.CreateFMul(LHSr, RHSi); // a*d
811 llvm::Value *BCmAD = Builder.CreateFSub(BC, AD); // bc-ad
813 DSTr = Builder.CreateFDiv(ACpBD, CCpDD);
814 DSTi = Builder.CreateFDiv(BCmAD, CCpDD);
816 assert(LHSi && "Can have at most one non-complex operand!");
818 DSTr = Builder.CreateFDiv(LHSr, RHSr);
819 DSTi = Builder.CreateFDiv(LHSi, RHSr);
822 assert(Op.LHS.second && Op.RHS.second &&
823 "Both operands of integer complex operators must be complex!");
824 // (a+ib) / (c+id) = ((ac+bd)/(cc+dd)) + i((bc-ad)/(cc+dd))
825 llvm::Value *Tmp1 = Builder.CreateMul(LHSr, RHSr); // a*c
826 llvm::Value *Tmp2 = Builder.CreateMul(LHSi, RHSi); // b*d
827 llvm::Value *Tmp3 = Builder.CreateAdd(Tmp1, Tmp2); // ac+bd
829 llvm::Value *Tmp4 = Builder.CreateMul(RHSr, RHSr); // c*c
830 llvm::Value *Tmp5 = Builder.CreateMul(RHSi, RHSi); // d*d
831 llvm::Value *Tmp6 = Builder.CreateAdd(Tmp4, Tmp5); // cc+dd
833 llvm::Value *Tmp7 = Builder.CreateMul(LHSi, RHSr); // b*c
834 llvm::Value *Tmp8 = Builder.CreateMul(LHSr, RHSi); // a*d
835 llvm::Value *Tmp9 = Builder.CreateSub(Tmp7, Tmp8); // bc-ad
837 if (Op.Ty->castAs<ComplexType>()->getElementType()->isUnsignedIntegerType()) {
838 DSTr = Builder.CreateUDiv(Tmp3, Tmp6);
839 DSTi = Builder.CreateUDiv(Tmp9, Tmp6);
841 DSTr = Builder.CreateSDiv(Tmp3, Tmp6);
842 DSTi = Builder.CreateSDiv(Tmp9, Tmp6);
846 return ComplexPairTy(DSTr, DSTi);
849 ComplexExprEmitter::BinOpInfo
850 ComplexExprEmitter::EmitBinOps(const BinaryOperator *E) {
851 TestAndClearIgnoreReal();
852 TestAndClearIgnoreImag();
854 if (E->getLHS()->getType()->isRealFloatingType())
855 Ops.LHS = ComplexPairTy(CGF.EmitScalarExpr(E->getLHS()), nullptr);
857 Ops.LHS = Visit(E->getLHS());
858 if (E->getRHS()->getType()->isRealFloatingType())
859 Ops.RHS = ComplexPairTy(CGF.EmitScalarExpr(E->getRHS()), nullptr);
861 Ops.RHS = Visit(E->getRHS());
863 Ops.Ty = E->getType();
868 LValue ComplexExprEmitter::
869 EmitCompoundAssignLValue(const CompoundAssignOperator *E,
870 ComplexPairTy (ComplexExprEmitter::*Func)(const BinOpInfo&),
872 TestAndClearIgnoreReal();
873 TestAndClearIgnoreImag();
874 QualType LHSTy = E->getLHS()->getType();
875 if (const AtomicType *AT = LHSTy->getAs<AtomicType>())
876 LHSTy = AT->getValueType();
880 // Load the RHS and LHS operands.
881 // __block variables need to have the rhs evaluated first, plus this should
882 // improve codegen a little.
883 OpInfo.Ty = E->getComputationResultType();
884 QualType ComplexElementTy = cast<ComplexType>(OpInfo.Ty)->getElementType();
886 // The RHS should have been converted to the computation type.
887 if (E->getRHS()->getType()->isRealFloatingType()) {
890 .hasSameUnqualifiedType(ComplexElementTy, E->getRHS()->getType()));
891 OpInfo.RHS = ComplexPairTy(CGF.EmitScalarExpr(E->getRHS()), nullptr);
893 assert(CGF.getContext()
894 .hasSameUnqualifiedType(OpInfo.Ty, E->getRHS()->getType()));
895 OpInfo.RHS = Visit(E->getRHS());
898 LValue LHS = CGF.EmitLValue(E->getLHS());
900 // Load from the l-value and convert it.
901 SourceLocation Loc = E->getExprLoc();
902 if (LHSTy->isAnyComplexType()) {
903 ComplexPairTy LHSVal = EmitLoadOfLValue(LHS, Loc);
904 OpInfo.LHS = EmitComplexToComplexCast(LHSVal, LHSTy, OpInfo.Ty, Loc);
906 llvm::Value *LHSVal = CGF.EmitLoadOfScalar(LHS, Loc);
907 // For floating point real operands we can directly pass the scalar form
908 // to the binary operator emission and potentially get more efficient code.
909 if (LHSTy->isRealFloatingType()) {
910 if (!CGF.getContext().hasSameUnqualifiedType(ComplexElementTy, LHSTy))
911 LHSVal = CGF.EmitScalarConversion(LHSVal, LHSTy, ComplexElementTy, Loc);
912 OpInfo.LHS = ComplexPairTy(LHSVal, nullptr);
914 OpInfo.LHS = EmitScalarToComplexCast(LHSVal, LHSTy, OpInfo.Ty, Loc);
918 // Expand the binary operator.
919 ComplexPairTy Result = (this->*Func)(OpInfo);
921 // Truncate the result and store it into the LHS lvalue.
922 if (LHSTy->isAnyComplexType()) {
923 ComplexPairTy ResVal =
924 EmitComplexToComplexCast(Result, OpInfo.Ty, LHSTy, Loc);
925 EmitStoreOfComplex(ResVal, LHS, /*isInit*/ false);
926 Val = RValue::getComplex(ResVal);
928 llvm::Value *ResVal =
929 CGF.EmitComplexToScalarConversion(Result, OpInfo.Ty, LHSTy, Loc);
930 CGF.EmitStoreOfScalar(ResVal, LHS, /*isInit*/ false);
931 Val = RValue::get(ResVal);
937 // Compound assignments.
938 ComplexPairTy ComplexExprEmitter::
939 EmitCompoundAssign(const CompoundAssignOperator *E,
940 ComplexPairTy (ComplexExprEmitter::*Func)(const BinOpInfo&)){
942 LValue LV = EmitCompoundAssignLValue(E, Func, Val);
944 // The result of an assignment in C is the assigned r-value.
945 if (!CGF.getLangOpts().CPlusPlus)
946 return Val.getComplexVal();
948 // If the lvalue is non-volatile, return the computed value of the assignment.
949 if (!LV.isVolatileQualified())
950 return Val.getComplexVal();
952 return EmitLoadOfLValue(LV, E->getExprLoc());
955 LValue ComplexExprEmitter::EmitBinAssignLValue(const BinaryOperator *E,
956 ComplexPairTy &Val) {
957 assert(CGF.getContext().hasSameUnqualifiedType(E->getLHS()->getType(),
958 E->getRHS()->getType()) &&
959 "Invalid assignment");
960 TestAndClearIgnoreReal();
961 TestAndClearIgnoreImag();
963 // Emit the RHS. __block variables need the RHS evaluated first.
964 Val = Visit(E->getRHS());
966 // Compute the address to store into.
967 LValue LHS = CGF.EmitLValue(E->getLHS());
969 // Store the result value into the LHS lvalue.
970 EmitStoreOfComplex(Val, LHS, /*isInit*/ false);
975 ComplexPairTy ComplexExprEmitter::VisitBinAssign(const BinaryOperator *E) {
977 LValue LV = EmitBinAssignLValue(E, Val);
979 // The result of an assignment in C is the assigned r-value.
980 if (!CGF.getLangOpts().CPlusPlus)
983 // If the lvalue is non-volatile, return the computed value of the assignment.
984 if (!LV.isVolatileQualified())
987 return EmitLoadOfLValue(LV, E->getExprLoc());
990 ComplexPairTy ComplexExprEmitter::VisitBinComma(const BinaryOperator *E) {
991 CGF.EmitIgnoredExpr(E->getLHS());
992 return Visit(E->getRHS());
995 ComplexPairTy ComplexExprEmitter::
996 VisitAbstractConditionalOperator(const AbstractConditionalOperator *E) {
997 TestAndClearIgnoreReal();
998 TestAndClearIgnoreImag();
999 llvm::BasicBlock *LHSBlock = CGF.createBasicBlock("cond.true");
1000 llvm::BasicBlock *RHSBlock = CGF.createBasicBlock("cond.false");
1001 llvm::BasicBlock *ContBlock = CGF.createBasicBlock("cond.end");
1003 // Bind the common expression if necessary.
1004 CodeGenFunction::OpaqueValueMapping binding(CGF, E);
1007 CodeGenFunction::ConditionalEvaluation eval(CGF);
1008 CGF.EmitBranchOnBoolExpr(E->getCond(), LHSBlock, RHSBlock,
1009 CGF.getProfileCount(E));
1012 CGF.EmitBlock(LHSBlock);
1013 CGF.incrementProfileCounter(E);
1014 ComplexPairTy LHS = Visit(E->getTrueExpr());
1015 LHSBlock = Builder.GetInsertBlock();
1016 CGF.EmitBranch(ContBlock);
1020 CGF.EmitBlock(RHSBlock);
1021 ComplexPairTy RHS = Visit(E->getFalseExpr());
1022 RHSBlock = Builder.GetInsertBlock();
1023 CGF.EmitBlock(ContBlock);
1026 // Create a PHI node for the real part.
1027 llvm::PHINode *RealPN = Builder.CreatePHI(LHS.first->getType(), 2, "cond.r");
1028 RealPN->addIncoming(LHS.first, LHSBlock);
1029 RealPN->addIncoming(RHS.first, RHSBlock);
1031 // Create a PHI node for the imaginary part.
1032 llvm::PHINode *ImagPN = Builder.CreatePHI(LHS.first->getType(), 2, "cond.i");
1033 ImagPN->addIncoming(LHS.second, LHSBlock);
1034 ImagPN->addIncoming(RHS.second, RHSBlock);
1036 return ComplexPairTy(RealPN, ImagPN);
1039 ComplexPairTy ComplexExprEmitter::VisitChooseExpr(ChooseExpr *E) {
1040 return Visit(E->getChosenSubExpr());
1043 ComplexPairTy ComplexExprEmitter::VisitInitListExpr(InitListExpr *E) {
1044 bool Ignore = TestAndClearIgnoreReal();
1046 assert (Ignore == false && "init list ignored");
1047 Ignore = TestAndClearIgnoreImag();
1049 assert (Ignore == false && "init list ignored");
1051 if (E->getNumInits() == 2) {
1052 llvm::Value *Real = CGF.EmitScalarExpr(E->getInit(0));
1053 llvm::Value *Imag = CGF.EmitScalarExpr(E->getInit(1));
1054 return ComplexPairTy(Real, Imag);
1055 } else if (E->getNumInits() == 1) {
1056 return Visit(E->getInit(0));
1059 // Empty init list initializes to null
1060 assert(E->getNumInits() == 0 && "Unexpected number of inits");
1061 QualType Ty = E->getType()->castAs<ComplexType>()->getElementType();
1062 llvm::Type* LTy = CGF.ConvertType(Ty);
1063 llvm::Value* zeroConstant = llvm::Constant::getNullValue(LTy);
1064 return ComplexPairTy(zeroConstant, zeroConstant);
1067 ComplexPairTy ComplexExprEmitter::VisitVAArgExpr(VAArgExpr *E) {
1068 Address ArgValue = Address::invalid();
1069 Address ArgPtr = CGF.EmitVAArg(E, ArgValue);
1071 if (!ArgPtr.isValid()) {
1072 CGF.ErrorUnsupported(E, "complex va_arg expression");
1074 CGF.ConvertType(E->getType()->castAs<ComplexType>()->getElementType());
1075 llvm::Value *U = llvm::UndefValue::get(EltTy);
1076 return ComplexPairTy(U, U);
1079 return EmitLoadOfLValue(CGF.MakeAddrLValue(ArgPtr, E->getType()),
1083 //===----------------------------------------------------------------------===//
1084 // Entry Point into this File
1085 //===----------------------------------------------------------------------===//
1087 /// EmitComplexExpr - Emit the computation of the specified expression of
1088 /// complex type, ignoring the result.
1089 ComplexPairTy CodeGenFunction::EmitComplexExpr(const Expr *E, bool IgnoreReal,
1091 assert(E && getComplexType(E->getType()) &&
1092 "Invalid complex expression to emit");
1094 return ComplexExprEmitter(*this, IgnoreReal, IgnoreImag)
1095 .Visit(const_cast<Expr *>(E));
1098 void CodeGenFunction::EmitComplexExprIntoLValue(const Expr *E, LValue dest,
1100 assert(E && getComplexType(E->getType()) &&
1101 "Invalid complex expression to emit");
1102 ComplexExprEmitter Emitter(*this);
1103 ComplexPairTy Val = Emitter.Visit(const_cast<Expr*>(E));
1104 Emitter.EmitStoreOfComplex(Val, dest, isInit);
1107 /// EmitStoreOfComplex - Store a complex number into the specified l-value.
1108 void CodeGenFunction::EmitStoreOfComplex(ComplexPairTy V, LValue dest,
1110 ComplexExprEmitter(*this).EmitStoreOfComplex(V, dest, isInit);
1113 /// EmitLoadOfComplex - Load a complex number from the specified address.
1114 ComplexPairTy CodeGenFunction::EmitLoadOfComplex(LValue src,
1115 SourceLocation loc) {
1116 return ComplexExprEmitter(*this).EmitLoadOfLValue(src, loc);
1119 LValue CodeGenFunction::EmitComplexAssignmentLValue(const BinaryOperator *E) {
1120 assert(E->getOpcode() == BO_Assign);
1121 ComplexPairTy Val; // ignored
1122 return ComplexExprEmitter(*this).EmitBinAssignLValue(E, Val);
1125 typedef ComplexPairTy (ComplexExprEmitter::*CompoundFunc)(
1126 const ComplexExprEmitter::BinOpInfo &);
1128 static CompoundFunc getComplexOp(BinaryOperatorKind Op) {
1130 case BO_MulAssign: return &ComplexExprEmitter::EmitBinMul;
1131 case BO_DivAssign: return &ComplexExprEmitter::EmitBinDiv;
1132 case BO_SubAssign: return &ComplexExprEmitter::EmitBinSub;
1133 case BO_AddAssign: return &ComplexExprEmitter::EmitBinAdd;
1135 llvm_unreachable("unexpected complex compound assignment");
1139 LValue CodeGenFunction::
1140 EmitComplexCompoundAssignmentLValue(const CompoundAssignOperator *E) {
1141 CompoundFunc Op = getComplexOp(E->getOpcode());
1143 return ComplexExprEmitter(*this).EmitCompoundAssignLValue(E, Op, Val);
1146 LValue CodeGenFunction::
1147 EmitScalarCompoundAssignWithComplex(const CompoundAssignOperator *E,
1148 llvm::Value *&Result) {
1149 CompoundFunc Op = getComplexOp(E->getOpcode());
1151 LValue Ret = ComplexExprEmitter(*this).EmitCompoundAssignLValue(E, Op, Val);
1152 Result = Val.getScalarVal();