CGExprComplex.cpp source code [clang_source_code/lib/CodeGen/CGExprComplex.cpp]

1	//===--- CGExprComplex.cpp - Emit LLVM Code for Complex Exprs -------------===//
2	//
3	// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4	// See https://llvm.org/LICENSE.txt for license information.
5	// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6	//
7	//===----------------------------------------------------------------------===//
8	//
9	// This contains code to emit Expr nodes with complex types as LLVM code.
10	//
11	//===----------------------------------------------------------------------===//
12
13	#include "CodeGenFunction.h"
14	#include "CodeGenModule.h"
15	#include "clang/AST/StmtVisitor.h"
16	#include "llvm/ADT/STLExtras.h"
17	#include "llvm/IR/Constants.h"
18	#include "llvm/IR/Instructions.h"
19	#include "llvm/IR/MDBuilder.h"
20	#include "llvm/IR/Metadata.h"
21	#include <algorithm>
22	using namespace clang;
23	using namespace CodeGen;
24
25	//===----------------------------------------------------------------------===//
26	// Complex Expression Emitter
27	//===----------------------------------------------------------------------===//
28
29	typedef CodeGenFunction::ComplexPairTy ComplexPairTy;
30
31	/// Return the complex type that we are meant to emit.
32	static const ComplexType *getComplexType(QualType type) {
33	type = type.getCanonicalType();
34	if (const ComplexType *comp = dyn_cast<ComplexType>(type)) {
35	return comp;
36	} else {
37	return cast<ComplexType>(cast<AtomicType>(type)->getValueType());
38	}
39	}
40
41	namespace {
42	class ComplexExprEmitter
43	: public StmtVisitor<ComplexExprEmitter, ComplexPairTy> {
44	CodeGenFunction &CGF;
45	CGBuilderTy &Builder;
46	bool IgnoreReal;
47	bool IgnoreImag;
48	public:
49	ComplexExprEmitter(CodeGenFunction &cgf, bool ir=false, bool ii=false)
50	: CGF(cgf), Builder(CGF.Builder), IgnoreReal(ir), IgnoreImag(ii) {
51	}
52
53
54	//===--------------------------------------------------------------------===//
55	// Utilities
56	//===--------------------------------------------------------------------===//
57
58	bool TestAndClearIgnoreReal() {
59	bool I = IgnoreReal;
60	IgnoreReal = false;
61	return I;
62	}
63	bool TestAndClearIgnoreImag() {
64	bool I = IgnoreImag;
65	IgnoreImag = false;
66	return I;
67	}
68
69	/// EmitLoadOfLValue - Given an expression with complex type that represents a
70	/// value l-value, this method emits the address of the l-value, then loads
71	/// and returns the result.
72	ComplexPairTy EmitLoadOfLValue(const Expr *E) {
73	return EmitLoadOfLValue(CGF.EmitLValue(E), E->getExprLoc());
74	}
75
76	ComplexPairTy EmitLoadOfLValue(LValue LV, SourceLocation Loc);
77
78	/// EmitStoreOfComplex - Store the specified real/imag parts into the
79	/// specified value pointer.
80	void EmitStoreOfComplex(ComplexPairTy Val, LValue LV, bool isInit);
81
82	/// Emit a cast from complex value Val to DestType.
83	ComplexPairTy EmitComplexToComplexCast(ComplexPairTy Val, QualType SrcType,
84	QualType DestType, SourceLocation Loc);
85	/// Emit a cast from scalar value Val to DestType.
86	ComplexPairTy EmitScalarToComplexCast(llvm::Value *Val, QualType SrcType,
87	QualType DestType, SourceLocation Loc);
88
89	//===--------------------------------------------------------------------===//
90	// Visitor Methods
91	//===--------------------------------------------------------------------===//
92
93	ComplexPairTy Visit(Expr *E) {
94	ApplyDebugLocation DL(CGF, E);
95	return StmtVisitor<ComplexExprEmitter, ComplexPairTy>::Visit(E);
96	}
97
98	ComplexPairTy VisitStmt(Stmt *S) {
99	S->dump(CGF.getContext().getSourceManager());
100	llvm_unreachable("Stmt can't have complex result type!");
101	}
102	ComplexPairTy VisitExpr(Expr *S);
103	ComplexPairTy VisitConstantExpr(ConstantExpr *E) {
104	return Visit(E->getSubExpr());
105	}
106	ComplexPairTy VisitParenExpr(ParenExpr *PE) { return Visit(PE->getSubExpr());}
107	ComplexPairTy VisitGenericSelectionExpr(GenericSelectionExpr *GE) {
108	return Visit(GE->getResultExpr());
109	}
110	ComplexPairTy VisitImaginaryLiteral(const ImaginaryLiteral *IL);
111	ComplexPairTy
112	VisitSubstNonTypeTemplateParmExpr(SubstNonTypeTemplateParmExpr *PE) {
113	return Visit(PE->getReplacement());
114	}
115	ComplexPairTy VisitCoawaitExpr(CoawaitExpr *S) {
116	return CGF.EmitCoawaitExpr(*S).getComplexVal();
117	}
118	ComplexPairTy VisitCoyieldExpr(CoyieldExpr *S) {
119	return CGF.EmitCoyieldExpr(*S).getComplexVal();
120	}
121	ComplexPairTy VisitUnaryCoawait(const UnaryOperator *E) {
122	return Visit(E->getSubExpr());
123	}
124
125	ComplexPairTy emitConstant(const CodeGenFunction::ConstantEmission &Constant,
126	Expr *E) {
127	(0) . __assert_fail ("Constant && \"not a constant\"", "/home/seafit/code_projects/clang_source/clang/lib/CodeGen/CGExprComplex.cpp", 127, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(Constant && "not a constant");
128	if (Constant.isReference())
129	return EmitLoadOfLValue(Constant.getReferenceLValue(CGF, E),
130	E->getExprLoc());
131
132	llvm::Constant *pair = Constant.getValue();
133	return ComplexPairTy(pair->getAggregateElement(0U),
134	pair->getAggregateElement(1U));
135	}
136
137	// l-values.
138	ComplexPairTy VisitDeclRefExpr(DeclRefExpr *E) {
139	if (CodeGenFunction::ConstantEmission Constant = CGF.tryEmitAsConstant(E))
140	return emitConstant(Constant, E);
141	return EmitLoadOfLValue(E);
142	}
143	ComplexPairTy VisitObjCIvarRefExpr(ObjCIvarRefExpr *E) {
144	return EmitLoadOfLValue(E);
145	}
146	ComplexPairTy VisitObjCMessageExpr(ObjCMessageExpr *E) {
147	return CGF.EmitObjCMessageExpr(E).getComplexVal();
148	}
149	ComplexPairTy VisitArraySubscriptExpr(Expr *E) { return EmitLoadOfLValue(E); }
150	ComplexPairTy VisitMemberExpr(MemberExpr *ME) {
151	if (CodeGenFunction::ConstantEmission Constant =
152	CGF.tryEmitAsConstant(ME)) {
153	CGF.EmitIgnoredExpr(ME->getBase());
154	return emitConstant(Constant, ME);
155	}
156	return EmitLoadOfLValue(ME);
157	}
158	ComplexPairTy VisitOpaqueValueExpr(OpaqueValueExpr *E) {
159	if (E->isGLValue())
160	return EmitLoadOfLValue(CGF.getOrCreateOpaqueLValueMapping(E),
161	E->getExprLoc());
162	return CGF.getOrCreateOpaqueRValueMapping(E).getComplexVal();
163	}
164
165	ComplexPairTy VisitPseudoObjectExpr(PseudoObjectExpr *E) {
166	return CGF.EmitPseudoObjectRValue(E).getComplexVal();
167	}
168
169	// FIXME: CompoundLiteralExpr
170
171	ComplexPairTy EmitCast(CastKind CK, Expr *Op, QualType DestTy);
172	ComplexPairTy VisitImplicitCastExpr(ImplicitCastExpr *E) {
173	// Unlike for scalars, we don't have to worry about function->ptr demotion
174	// here.
175	return EmitCast(E->getCastKind(), E->getSubExpr(), E->getType());
176	}
177	ComplexPairTy VisitCastExpr(CastExpr *E) {
178	if (const auto *ECE = dyn_cast<ExplicitCastExpr>(E))
179	CGF.CGM.EmitExplicitCastExprType(ECE, &CGF);
180	return EmitCast(E->getCastKind(), E->getSubExpr(), E->getType());
181	}
182	ComplexPairTy VisitCallExpr(const CallExpr *E);
183	ComplexPairTy VisitStmtExpr(const StmtExpr *E);
184
185	// Operators.
186	ComplexPairTy VisitPrePostIncDec(const UnaryOperator *E,
187	bool isInc, bool isPre) {
188	LValue LV = CGF.EmitLValue(E->getSubExpr());
189	return CGF.EmitComplexPrePostIncDec(E, LV, isInc, isPre);
190	}
191	ComplexPairTy VisitUnaryPostDec(const UnaryOperator *E) {
192	return VisitPrePostIncDec(E, false, false);
193	}
194	ComplexPairTy VisitUnaryPostInc(const UnaryOperator *E) {
195	return VisitPrePostIncDec(E, true, false);
196	}
197	ComplexPairTy VisitUnaryPreDec(const UnaryOperator *E) {
198	return VisitPrePostIncDec(E, false, true);
199	}
200	ComplexPairTy VisitUnaryPreInc(const UnaryOperator *E) {
201	return VisitPrePostIncDec(E, true, true);
202	}
203	ComplexPairTy VisitUnaryDeref(const Expr *E) { return EmitLoadOfLValue(E); }
204	ComplexPairTy VisitUnaryPlus (const UnaryOperator *E) {
205	TestAndClearIgnoreReal();
206	TestAndClearIgnoreImag();
207	return Visit(E->getSubExpr());
208	}
209	ComplexPairTy VisitUnaryMinus (const UnaryOperator *E);
210	ComplexPairTy VisitUnaryNot (const UnaryOperator *E);
211	// LNot,Real,Imag never return complex.
212	ComplexPairTy VisitUnaryExtension(const UnaryOperator *E) {
213	return Visit(E->getSubExpr());
214	}
215	ComplexPairTy VisitCXXDefaultArgExpr(CXXDefaultArgExpr *DAE) {
216	return Visit(DAE->getExpr());
217	}
218	ComplexPairTy VisitCXXDefaultInitExpr(CXXDefaultInitExpr *DIE) {
219	CodeGenFunction::CXXDefaultInitExprScope Scope(CGF);
220	return Visit(DIE->getExpr());
221	}
222	ComplexPairTy VisitExprWithCleanups(ExprWithCleanups *E) {
223	CGF.enterFullExpression(E);
224	CodeGenFunction::RunCleanupsScope Scope(CGF);
225	ComplexPairTy Vals = Visit(E->getSubExpr());
226	// Defend against dominance problems caused by jumps out of expression
227	// evaluation through the shared cleanup block.
228	Scope.ForceCleanup({&Vals.first, &Vals.second});
229	return Vals;
230	}
231	ComplexPairTy VisitCXXScalarValueInitExpr(CXXScalarValueInitExpr *E) {
232	(0) . __assert_fail ("E->getType()->isAnyComplexType() && \"Expected complex type!\"", "/home/seafit/code_projects/clang_source/clang/lib/CodeGen/CGExprComplex.cpp", 232, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(E->getType()->isAnyComplexType() && "Expected complex type!");
233	QualType Elem = E->getType()->castAs<ComplexType>()->getElementType();
234	llvm::Constant *Null = llvm::Constant::getNullValue(CGF.ConvertType(Elem));
235	return ComplexPairTy(Null, Null);
236	}
237	ComplexPairTy VisitImplicitValueInitExpr(ImplicitValueInitExpr *E) {
238	(0) . __assert_fail ("E->getType()->isAnyComplexType() && \"Expected complex type!\"", "/home/seafit/code_projects/clang_source/clang/lib/CodeGen/CGExprComplex.cpp", 238, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(E->getType()->isAnyComplexType() && "Expected complex type!");
239	QualType Elem = E->getType()->castAs<ComplexType>()->getElementType();
240	llvm::Constant *Null =
241	llvm::Constant::getNullValue(CGF.ConvertType(Elem));
242	return ComplexPairTy(Null, Null);
243	}
244
245	struct BinOpInfo {
246	ComplexPairTy LHS;
247	ComplexPairTy RHS;
248	QualType Ty; // Computation Type.
249	};
250
251	BinOpInfo EmitBinOps(const BinaryOperator *E);
252	LValue EmitCompoundAssignLValue(const CompoundAssignOperator *E,
253	ComplexPairTy (ComplexExprEmitter::*Func)
254	(const BinOpInfo &),
255	RValue &Val);
256	ComplexPairTy EmitCompoundAssign(const CompoundAssignOperator *E,
257	ComplexPairTy (ComplexExprEmitter::*Func)
258	(const BinOpInfo &));
259
260	ComplexPairTy EmitBinAdd(const BinOpInfo &Op);
261	ComplexPairTy EmitBinSub(const BinOpInfo &Op);
262	ComplexPairTy EmitBinMul(const BinOpInfo &Op);
263	ComplexPairTy EmitBinDiv(const BinOpInfo &Op);
264
265	ComplexPairTy EmitComplexBinOpLibCall(StringRef LibCallName,
266	const BinOpInfo &Op);
267
268	ComplexPairTy VisitBinAdd(const BinaryOperator *E) {
269	return EmitBinAdd(EmitBinOps(E));
270	}
271	ComplexPairTy VisitBinSub(const BinaryOperator *E) {
272	return EmitBinSub(EmitBinOps(E));
273	}
274	ComplexPairTy VisitBinMul(const BinaryOperator *E) {
275	return EmitBinMul(EmitBinOps(E));
276	}
277	ComplexPairTy VisitBinDiv(const BinaryOperator *E) {
278	return EmitBinDiv(EmitBinOps(E));
279	}
280
281	// Compound assignments.
282	ComplexPairTy VisitBinAddAssign(const CompoundAssignOperator *E) {
283	return EmitCompoundAssign(E, &ComplexExprEmitter::EmitBinAdd);
284	}
285	ComplexPairTy VisitBinSubAssign(const CompoundAssignOperator *E) {
286	return EmitCompoundAssign(E, &ComplexExprEmitter::EmitBinSub);
287	}
288	ComplexPairTy VisitBinMulAssign(const CompoundAssignOperator *E) {
289	return EmitCompoundAssign(E, &ComplexExprEmitter::EmitBinMul);
290	}
291	ComplexPairTy VisitBinDivAssign(const CompoundAssignOperator *E) {
292	return EmitCompoundAssign(E, &ComplexExprEmitter::EmitBinDiv);
293	}
294
295	// GCC rejects rem/and/or/xor for integer complex.
296	// Logical and/or always return int, never complex.
297
298	// No comparisons produce a complex result.
299
300	LValue EmitBinAssignLValue(const BinaryOperator *E,
301	ComplexPairTy &Val);
302	ComplexPairTy VisitBinAssign (const BinaryOperator *E);
303	ComplexPairTy VisitBinComma (const BinaryOperator *E);
304
305
306	ComplexPairTy
307	VisitAbstractConditionalOperator(const AbstractConditionalOperator *CO);
308	ComplexPairTy VisitChooseExpr(ChooseExpr *CE);
309
310	ComplexPairTy VisitInitListExpr(InitListExpr *E);
311
312	ComplexPairTy VisitCompoundLiteralExpr(CompoundLiteralExpr *E) {
313	return EmitLoadOfLValue(E);
314	}
315
316	ComplexPairTy VisitVAArgExpr(VAArgExpr *E);
317
318	ComplexPairTy VisitAtomicExpr(AtomicExpr *E) {
319	return CGF.EmitAtomicExpr(E).getComplexVal();
320	}
321	};
322	} // end anonymous namespace.
323
324	//===----------------------------------------------------------------------===//
325	// Utilities
326	//===----------------------------------------------------------------------===//
327
328	Address CodeGenFunction::emitAddrOfRealComponent(Address addr,
329	QualType complexType) {
330	return Builder.CreateStructGEP(addr, 0, addr.getName() + ".realp");
331	}
332
333	Address CodeGenFunction::emitAddrOfImagComponent(Address addr,
334	QualType complexType) {
335	return Builder.CreateStructGEP(addr, 1, addr.getName() + ".imagp");
336	}
337
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	(0) . __assert_fail ("lvalue.isSimple() && \"non-simple complex l-value?\"", "/home/seafit/code_projects/clang_source/clang/lib/CodeGen/CGExprComplex.cpp", 342, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(lvalue.isSimple() && "non-simple complex l-value?");
343	if (lvalue.getType()->isAtomicType())
344	return CGF.EmitAtomicLoad(lvalue, loc).getComplexVal();
345
346	Address SrcPtr = lvalue.getAddress();
347	bool isVolatile = lvalue.isVolatileQualified();
348
349	llvm::Value Real = nullptr, Imag = nullptr;
350
351	if (!IgnoreReal \|\| isVolatile) {
352	Address RealP = CGF.emitAddrOfRealComponent(SrcPtr, lvalue.getType());
353	Real = Builder.CreateLoad(RealP, isVolatile, SrcPtr.getName() + ".real");
354	}
355
356	if (!IgnoreImag \|\| isVolatile) {
357	Address ImagP = CGF.emitAddrOfImagComponent(SrcPtr, lvalue.getType());
358	Imag = Builder.CreateLoad(ImagP, isVolatile, SrcPtr.getName() + ".imag");
359	}
360
361	return ComplexPairTy(Real, Imag);
362	}
363
364	/// EmitStoreOfComplex - Store the specified real/imag parts into the
365	/// specified value pointer.
366	void ComplexExprEmitter::EmitStoreOfComplex(ComplexPairTy Val, LValue lvalue,
367	bool isInit) {
368	if (lvalue.getType()->isAtomicType() \|\|
369	(!isInit && CGF.LValueIsSuitableForInlineAtomic(lvalue)))
370	return CGF.EmitAtomicStore(RValue::getComplex(Val), lvalue, isInit);
371
372	Address Ptr = lvalue.getAddress();
373	Address RealPtr = CGF.emitAddrOfRealComponent(Ptr, lvalue.getType());
374	Address ImagPtr = CGF.emitAddrOfImagComponent(Ptr, lvalue.getType());
375
376	Builder.CreateStore(Val.first, RealPtr, lvalue.isVolatileQualified());
377	Builder.CreateStore(Val.second, ImagPtr, lvalue.isVolatileQualified());
378	}
379
380
381
382	//===----------------------------------------------------------------------===//
383	// Visitor Methods
384	//===----------------------------------------------------------------------===//
385
386	ComplexPairTy ComplexExprEmitter::VisitExpr(Expr *E) {
387	CGF.ErrorUnsupported(E, "complex expression");
388	llvm::Type *EltTy =
389	CGF.ConvertType(getComplexType(E->getType())->getElementType());
390	llvm::Value *U = llvm::UndefValue::get(EltTy);
391	return ComplexPairTy(U, U);
392	}
393
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);
398	}
399
400
401	ComplexPairTy ComplexExprEmitter::VisitCallExpr(const CallExpr *E) {
402	if (E->getCallReturnType(CGF.getContext())->isReferenceType())
403	return EmitLoadOfLValue(E);
404
405	return CGF.EmitCallExpr(E).getComplexVal();
406	}
407
408	ComplexPairTy ComplexExprEmitter::VisitStmtExpr(const StmtExpr *E) {
409	CodeGenFunction::StmtExprEvaluation eval(CGF);
410	Address RetAlloca = CGF.EmitCompoundStmt(*E->getSubStmt(), true);
411	(0) . __assert_fail ("RetAlloca.isValid() && \"Expected complex return value\"", "/home/seafit/code_projects/clang_source/clang/lib/CodeGen/CGExprComplex.cpp", 411, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(RetAlloca.isValid() && "Expected complex return value");
412	return EmitLoadOfLValue(CGF.MakeAddrLValue(RetAlloca, E->getType()),
413	E->getExprLoc());
414	}
415
416	/// Emit a cast from complex value Val to DestType.
417	ComplexPairTy ComplexExprEmitter::EmitComplexToComplexCast(ComplexPairTy Val,
418	QualType SrcType,
419	QualType DestType,
420	SourceLocation Loc) {
421	// Get the src/dest element type.
422	SrcType = SrcType->castAs<ComplexType>()->getElementType();
423	DestType = DestType->castAs<ComplexType>()->getElementType();
424
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);
430	return Val;
431	}
432
433	ComplexPairTy ComplexExprEmitter::EmitScalarToComplexCast(llvm::Value *Val,
434	QualType SrcType,
435	QualType DestType,
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);
440
441	// Return (realval, 0).
442	return ComplexPairTy(Val, llvm::Constant::getNullValue(Val->getType()));
443	}
444
445	ComplexPairTy ComplexExprEmitter::EmitCast(CastKind CK, Expr *Op,
446	QualType DestTy) {
447	switch (CK) {
448	case CK_Dependent: llvm_unreachable("dependent cast kind in IR gen!");
449
450	// Atomic to non-atomic casts may be more than a no-op for some platforms and
451	// for some types.
452	case CK_AtomicToNonAtomic:
453	case CK_NonAtomicToAtomic:
454	case CK_NoOp:
455	case CK_LValueToRValue:
456	case CK_UserDefinedConversion:
457	return Visit(Op);
458
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());
464	}
465
466	case CK_BitCast:
467	case CK_BaseToDerived:
468	case CK_DerivedToBase:
469	case CK_UncheckedDerivedToBase:
470	case CK_Dynamic:
471	case CK_ToUnion:
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:
484	case CK_ToVoid:
485	case CK_VectorSplat:
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_ZeroToOCLOpaqueType:
508	case CK_AddressSpaceConversion:
509	case CK_IntToOCLSampler:
510	case CK_FixedPointCast:
511	case CK_FixedPointToBoolean:
512	case CK_FixedPointToIntegral:
513	case CK_IntegralToFixedPoint:
514	llvm_unreachable("invalid cast kind for complex value");
515
516	case CK_FloatingRealToComplex:
517	case CK_IntegralRealToComplex:
518	return EmitScalarToComplexCast(CGF.EmitScalarExpr(Op), Op->getType(),
519	DestTy, Op->getExprLoc());
520
521	case CK_FloatingComplexCast:
522	case CK_FloatingComplexToIntegralComplex:
523	case CK_IntegralComplexCast:
524	case CK_IntegralComplexToFloatingComplex:
525	return EmitComplexToComplexCast(Visit(Op), Op->getType(), DestTy,
526	Op->getExprLoc());
527	}
528
529	llvm_unreachable("unknown cast resulting in complex value");
530	}
531
532	ComplexPairTy ComplexExprEmitter::VisitUnaryMinus(const UnaryOperator *E) {
533	TestAndClearIgnoreReal();
534	TestAndClearIgnoreImag();
535	ComplexPairTy Op = Visit(E->getSubExpr());
536
537	llvm::Value ResR, ResI;
538	if (Op.first->getType()->isFloatingPointTy()) {
539	ResR = Builder.CreateFNeg(Op.first, "neg.r");
540	ResI = Builder.CreateFNeg(Op.second, "neg.i");
541	} else {
542	ResR = Builder.CreateNeg(Op.first, "neg.r");
543	ResI = Builder.CreateNeg(Op.second, "neg.i");
544	}
545	return ComplexPairTy(ResR, ResI);
546	}
547
548	ComplexPairTy ComplexExprEmitter::VisitUnaryNot(const UnaryOperator *E) {
549	TestAndClearIgnoreReal();
550	TestAndClearIgnoreImag();
551	// ~(a+ib) = a + i*-b
552	ComplexPairTy Op = Visit(E->getSubExpr());
553	llvm::Value *ResI;
554	if (Op.second->getType()->isFloatingPointTy())
555	ResI = Builder.CreateFNeg(Op.second, "conj.i");
556	else
557	ResI = Builder.CreateNeg(Op.second, "conj.i");
558
559	return ComplexPairTy(Op.first, ResI);
560	}
561
562	ComplexPairTy ComplexExprEmitter::EmitBinAdd(const BinOpInfo &Op) {
563	llvm::Value ResR, ResI;
564
565	if (Op.LHS.first->getType()->isFloatingPointTy()) {
566	ResR = Builder.CreateFAdd(Op.LHS.first, Op.RHS.first, "add.r");
567	if (Op.LHS.second && Op.RHS.second)
568	ResI = Builder.CreateFAdd(Op.LHS.second, Op.RHS.second, "add.i");
569	else
570	ResI = Op.LHS.second ? Op.LHS.second : Op.RHS.second;
571	(0) . __assert_fail ("ResI && \"Only one operand may be real!\"", "/home/seafit/code_projects/clang_source/clang/lib/CodeGen/CGExprComplex.cpp", 571, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(ResI && "Only one operand may be real!");
572	} else {
573	ResR = Builder.CreateAdd(Op.LHS.first, Op.RHS.first, "add.r");
574	(0) . __assert_fail ("Op.LHS.second && Op.RHS.second && \"Both operands of integer complex operators must be complex!\"", "/home/seafit/code_projects/clang_source/clang/lib/CodeGen/CGExprComplex.cpp", 575, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(Op.LHS.second && Op.RHS.second &&
575	(0) . __assert_fail ("Op.LHS.second && Op.RHS.second && \"Both operands of integer complex operators must be complex!\"", "/home/seafit/code_projects/clang_source/clang/lib/CodeGen/CGExprComplex.cpp", 575, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true"> "Both operands of integer complex operators must be complex!");
576	ResI = Builder.CreateAdd(Op.LHS.second, Op.RHS.second, "add.i");
577	}
578	return ComplexPairTy(ResR, ResI);
579	}
580
581	ComplexPairTy ComplexExprEmitter::EmitBinSub(const BinOpInfo &Op) {
582	llvm::Value ResR, ResI;
583	if (Op.LHS.first->getType()->isFloatingPointTy()) {
584	ResR = Builder.CreateFSub(Op.LHS.first, Op.RHS.first, "sub.r");
585	if (Op.LHS.second && Op.RHS.second)
586	ResI = Builder.CreateFSub(Op.LHS.second, Op.RHS.second, "sub.i");
587	else
588	ResI = Op.LHS.second ? Op.LHS.second
589	: Builder.CreateFNeg(Op.RHS.second, "sub.i");
590	(0) . __assert_fail ("ResI && \"Only one operand may be real!\"", "/home/seafit/code_projects/clang_source/clang/lib/CodeGen/CGExprComplex.cpp", 590, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(ResI && "Only one operand may be real!");
591	} else {
592	ResR = Builder.CreateSub(Op.LHS.first, Op.RHS.first, "sub.r");
593	(0) . __assert_fail ("Op.LHS.second && Op.RHS.second && \"Both operands of integer complex operators must be complex!\"", "/home/seafit/code_projects/clang_source/clang/lib/CodeGen/CGExprComplex.cpp", 594, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(Op.LHS.second && Op.RHS.second &&
594	(0) . __assert_fail ("Op.LHS.second && Op.RHS.second && \"Both operands of integer complex operators must be complex!\"", "/home/seafit/code_projects/clang_source/clang/lib/CodeGen/CGExprComplex.cpp", 594, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true"> "Both operands of integer complex operators must be complex!");
595	ResI = Builder.CreateSub(Op.LHS.second, Op.RHS.second, "sub.i");
596	}
597	return ComplexPairTy(ResR, ResI);
598	}
599
600	/// Emit a libcall for a binary operation on complex types.
601	ComplexPairTy ComplexExprEmitter::EmitComplexBinOpLibCall(StringRef LibCallName,
602	const BinOpInfo &Op) {
603	CallArgList Args;
604	Args.add(RValue::get(Op.LHS.first),
605	Op.Ty->castAs<ComplexType>()->getElementType());
606	Args.add(RValue::get(Op.LHS.second),
607	Op.Ty->castAs<ComplexType>()->getElementType());
608	Args.add(RValue::get(Op.RHS.first),
609	Op.Ty->castAs<ComplexType>()->getElementType());
610	Args.add(RValue::get(Op.RHS.second),
611	Op.Ty->castAs<ComplexType>()->getElementType());
612
613	// We must use the full CG function call building logic here because the
614	// complex type has special ABI handling. We also should not forget about
615	// special calling convention which may be used for compiler builtins.
616
617	// We create a function qualified type to state that this call does not have
618	// any exceptions.
619	FunctionProtoType::ExtProtoInfo EPI;
620	EPI = EPI.withExceptionSpec(
621	FunctionProtoType::ExceptionSpecInfo(EST_BasicNoexcept));
622	SmallVector<QualType, 4> ArgsQTys(
623	4, Op.Ty->castAs<ComplexType>()->getElementType());
624	QualType FQTy = CGF.getContext().getFunctionType(Op.Ty, ArgsQTys, EPI);
625	const CGFunctionInfo &FuncInfo = CGF.CGM.getTypes().arrangeFreeFunctionCall(
626	Args, cast<FunctionType>(FQTy.getTypePtr()), false);
627
628	llvm::FunctionType *FTy = CGF.CGM.getTypes().GetFunctionType(FuncInfo);
629	llvm::FunctionCallee Func = CGF.CGM.CreateRuntimeFunction(
630	FTy, LibCallName, llvm::AttributeList(), true);
631	CGCallee Callee = CGCallee::forDirect(Func, FQTy->getAs<FunctionProtoType>());
632
633	llvm::CallBase *Call;
634	RValue Res = CGF.EmitCall(FuncInfo, Callee, ReturnValueSlot(), Args, &Call);
635	Call->setCallingConv(CGF.CGM.getRuntimeCC());
636	return Res.getComplexVal();
637	}
638
639	/// Lookup the libcall name for a given floating point type complex
640	/// multiply.
641	static StringRef getComplexMultiplyLibCallName(llvm::Type *Ty) {
642	switch (Ty->getTypeID()) {
643	default:
644	llvm_unreachable("Unsupported floating point type!");
645	case llvm::Type::HalfTyID:
646	return "__mulhc3";
647	case llvm::Type::FloatTyID:
648	return "__mulsc3";
649	case llvm::Type::DoubleTyID:
650	return "__muldc3";
651	case llvm::Type::PPC_FP128TyID:
652	return "__multc3";
653	case llvm::Type::X86_FP80TyID:
654	return "__mulxc3";
655	case llvm::Type::FP128TyID:
656	return "__multc3";
657	}
658	}
659
660	// See C11 Annex G.5.1 for the semantics of multiplicative operators on complex
661	// typed values.
662	ComplexPairTy ComplexExprEmitter::EmitBinMul(const BinOpInfo &Op) {
663	using llvm::Value;
664	Value ResR, ResI;
665	llvm::MDBuilder MDHelper(CGF.getLLVMContext());
666
667	if (Op.LHS.first->getType()->isFloatingPointTy()) {
668	// The general formulation is:
669	// (a + ib) * (c + id) = (a * c - b * d) + i(a * d + b * c)
670	//
671	// But we can fold away components which would be zero due to a real
672	// operand according to C11 Annex G.5.1p2.
673	// FIXME: C11 also provides for imaginary types which would allow folding
674	// still more of this within the type system.
675
676	if (Op.LHS.second && Op.RHS.second) {
677	// If both operands are complex, emit the core math directly, and then
678	// test for NaNs. If we find NaNs in the result, we delegate to a libcall
679	// to carefully re-compute the correct infinity representation if
680	// possible. The expectation is that the presence of NaNs here is
681	// extremely rare, and so the cost of the libcall is almost irrelevant.
682	// This is good, because the libcall re-computes the core multiplication
683	// exactly the same as we do here and re-tests for NaNs in order to be
684	// a generic complex*complex libcall.
685
686	// First compute the four products.
687	Value *AC = Builder.CreateFMul(Op.LHS.first, Op.RHS.first, "mul_ac");
688	Value *BD = Builder.CreateFMul(Op.LHS.second, Op.RHS.second, "mul_bd");
689	Value *AD = Builder.CreateFMul(Op.LHS.first, Op.RHS.second, "mul_ad");
690	Value *BC = Builder.CreateFMul(Op.LHS.second, Op.RHS.first, "mul_bc");
691
692	// The real part is the difference of the first two, the imaginary part is
693	// the sum of the second.
694	ResR = Builder.CreateFSub(AC, BD, "mul_r");
695	ResI = Builder.CreateFAdd(AD, BC, "mul_i");
696
697	// Emit the test for the real part becoming NaN and create a branch to
698	// handle it. We test for NaN by comparing the number to itself.
699	Value *IsRNaN = Builder.CreateFCmpUNO(ResR, ResR, "isnan_cmp");
700	llvm::BasicBlock *ContBB = CGF.createBasicBlock("complex_mul_cont");
701	llvm::BasicBlock *INaNBB = CGF.createBasicBlock("complex_mul_imag_nan");
702	llvm::Instruction *Branch = Builder.CreateCondBr(IsRNaN, INaNBB, ContBB);
703	llvm::BasicBlock *OrigBB = Branch->getParent();
704
705	// Give hint that we very much don't expect to see NaNs.
706	// Value chosen to match UR_NONTAKEN_WEIGHT, see BranchProbabilityInfo.cpp
707	llvm::MDNode *BrWeight = MDHelper.createBranchWeights(1, (1U << 20) - 1);
708	Branch->setMetadata(llvm::LLVMContext::MD_prof, BrWeight);
709
710	// Now test the imaginary part and create its branch.
711	CGF.EmitBlock(INaNBB);
712	Value *IsINaN = Builder.CreateFCmpUNO(ResI, ResI, "isnan_cmp");
713	llvm::BasicBlock *LibCallBB = CGF.createBasicBlock("complex_mul_libcall");
714	Branch = Builder.CreateCondBr(IsINaN, LibCallBB, ContBB);
715	Branch->setMetadata(llvm::LLVMContext::MD_prof, BrWeight);
716
717	// Now emit the libcall on this slowest of the slow paths.
718	CGF.EmitBlock(LibCallBB);
719	Value LibCallR, LibCallI;
720	std::tie(LibCallR, LibCallI) = EmitComplexBinOpLibCall(
721	getComplexMultiplyLibCallName(Op.LHS.first->getType()), Op);
722	Builder.CreateBr(ContBB);
723
724	// Finally continue execution by phi-ing together the different
725	// computation paths.
726	CGF.EmitBlock(ContBB);
727	llvm::PHINode *RealPHI = Builder.CreatePHI(ResR->getType(), 3, "real_mul_phi");
728	RealPHI->addIncoming(ResR, OrigBB);
729	RealPHI->addIncoming(ResR, INaNBB);
730	RealPHI->addIncoming(LibCallR, LibCallBB);
731	llvm::PHINode *ImagPHI = Builder.CreatePHI(ResI->getType(), 3, "imag_mul_phi");
732	ImagPHI->addIncoming(ResI, OrigBB);
733	ImagPHI->addIncoming(ResI, INaNBB);
734	ImagPHI->addIncoming(LibCallI, LibCallBB);
735	return ComplexPairTy(RealPHI, ImagPHI);
736	}
737	(0) . __assert_fail ("(Op.LHS.second \|\| Op.RHS.second) && \"At least one operand must be complex!\"", "/home/seafit/code_projects/clang_source/clang/lib/CodeGen/CGExprComplex.cpp", 738, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert((Op.LHS.second \|\| Op.RHS.second) &&
738	(0) . __assert_fail ("(Op.LHS.second \|\| Op.RHS.second) && \"At least one operand must be complex!\"", "/home/seafit/code_projects/clang_source/clang/lib/CodeGen/CGExprComplex.cpp", 738, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true"> "At least one operand must be complex!");
739
740	// If either of the operands is a real rather than a complex, the
741	// imaginary component is ignored when computing the real component of the
742	// result.
743	ResR = Builder.CreateFMul(Op.LHS.first, Op.RHS.first, "mul.rl");
744
745	ResI = Op.LHS.second
746	? Builder.CreateFMul(Op.LHS.second, Op.RHS.first, "mul.il")
747	: Builder.CreateFMul(Op.LHS.first, Op.RHS.second, "mul.ir");
748	} else {
749	(0) . __assert_fail ("Op.LHS.second && Op.RHS.second && \"Both operands of integer complex operators must be complex!\"", "/home/seafit/code_projects/clang_source/clang/lib/CodeGen/CGExprComplex.cpp", 750, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(Op.LHS.second && Op.RHS.second &&
750	(0) . __assert_fail ("Op.LHS.second && Op.RHS.second && \"Both operands of integer complex operators must be complex!\"", "/home/seafit/code_projects/clang_source/clang/lib/CodeGen/CGExprComplex.cpp", 750, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true"> "Both operands of integer complex operators must be complex!");
751	Value *ResRl = Builder.CreateMul(Op.LHS.first, Op.RHS.first, "mul.rl");
752	Value *ResRr = Builder.CreateMul(Op.LHS.second, Op.RHS.second, "mul.rr");
753	ResR = Builder.CreateSub(ResRl, ResRr, "mul.r");
754
755	Value *ResIl = Builder.CreateMul(Op.LHS.second, Op.RHS.first, "mul.il");
756	Value *ResIr = Builder.CreateMul(Op.LHS.first, Op.RHS.second, "mul.ir");
757	ResI = Builder.CreateAdd(ResIl, ResIr, "mul.i");
758	}
759	return ComplexPairTy(ResR, ResI);
760	}
761
762	// See C11 Annex G.5.1 for the semantics of multiplicative operators on complex
763	// typed values.
764	ComplexPairTy ComplexExprEmitter::EmitBinDiv(const BinOpInfo &Op) {
765	llvm::Value LHSr = Op.LHS.first, LHSi = Op.LHS.second;
766	llvm::Value RHSr = Op.RHS.first, RHSi = Op.RHS.second;
767
768	llvm::Value DSTr, DSTi;
769	if (LHSr->getType()->isFloatingPointTy()) {
770	// If we have a complex operand on the RHS and FastMath is not allowed, we
771	// delegate to a libcall to handle all of the complexities and minimize
772	// underflow/overflow cases. When FastMath is allowed we construct the
773	// divide inline using the same algorithm as for integer operands.
774	//
775	// FIXME: We would be able to avoid the libcall in many places if we
776	// supported imaginary types in addition to complex types.
777	if (RHSi && !CGF.getLangOpts().FastMath) {
778	BinOpInfo LibCallOp = Op;
779	// If LHS was a real, supply a null imaginary part.
780	if (!LHSi)
781	LibCallOp.LHS.second = llvm::Constant::getNullValue(LHSr->getType());
782
783	switch (LHSr->getType()->getTypeID()) {
784	default:
785	llvm_unreachable("Unsupported floating point type!");
786	case llvm::Type::HalfTyID:
787	return EmitComplexBinOpLibCall("__divhc3", LibCallOp);
788	case llvm::Type::FloatTyID:
789	return EmitComplexBinOpLibCall("__divsc3", LibCallOp);
790	case llvm::Type::DoubleTyID:
791	return EmitComplexBinOpLibCall("__divdc3", LibCallOp);
792	case llvm::Type::PPC_FP128TyID:
793	return EmitComplexBinOpLibCall("__divtc3", LibCallOp);
794	case llvm::Type::X86_FP80TyID:
795	return EmitComplexBinOpLibCall("__divxc3", LibCallOp);
796	case llvm::Type::FP128TyID:
797	return EmitComplexBinOpLibCall("__divtc3", LibCallOp);
798	}
799	} else if (RHSi) {
800	if (!LHSi)
801	LHSi = llvm::Constant::getNullValue(RHSi->getType());
802
803	// (a+ib) / (c+id) = ((ac+bd)/(cc+dd)) + i((bc-ad)/(cc+dd))
804	llvm::Value AC = Builder.CreateFMul(LHSr, RHSr); // ac
805	llvm::Value BD = Builder.CreateFMul(LHSi, RHSi); // bd
806	llvm::Value *ACpBD = Builder.CreateFAdd(AC, BD); // ac+bd
807
808	llvm::Value CC = Builder.CreateFMul(RHSr, RHSr); // cc
809	llvm::Value DD = Builder.CreateFMul(RHSi, RHSi); // dd
810	llvm::Value *CCpDD = Builder.CreateFAdd(CC, DD); // cc+dd
811
812	llvm::Value BC = Builder.CreateFMul(LHSi, RHSr); // bc
813	llvm::Value AD = Builder.CreateFMul(LHSr, RHSi); // ad
814	llvm::Value *BCmAD = Builder.CreateFSub(BC, AD); // bc-ad
815
816	DSTr = Builder.CreateFDiv(ACpBD, CCpDD);
817	DSTi = Builder.CreateFDiv(BCmAD, CCpDD);
818	} else {
819	(0) . __assert_fail ("LHSi && \"Can have at most one non-complex operand!\"", "/home/seafit/code_projects/clang_source/clang/lib/CodeGen/CGExprComplex.cpp", 819, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(LHSi && "Can have at most one non-complex operand!");
820
821	DSTr = Builder.CreateFDiv(LHSr, RHSr);
822	DSTi = Builder.CreateFDiv(LHSi, RHSr);
823	}
824	} else {
825	(0) . __assert_fail ("Op.LHS.second && Op.RHS.second && \"Both operands of integer complex operators must be complex!\"", "/home/seafit/code_projects/clang_source/clang/lib/CodeGen/CGExprComplex.cpp", 826, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(Op.LHS.second && Op.RHS.second &&
826	(0) . __assert_fail ("Op.LHS.second && Op.RHS.second && \"Both operands of integer complex operators must be complex!\"", "/home/seafit/code_projects/clang_source/clang/lib/CodeGen/CGExprComplex.cpp", 826, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true"> "Both operands of integer complex operators must be complex!");
827	// (a+ib) / (c+id) = ((ac+bd)/(cc+dd)) + i((bc-ad)/(cc+dd))
828	llvm::Value Tmp1 = Builder.CreateMul(LHSr, RHSr); // ac
829	llvm::Value Tmp2 = Builder.CreateMul(LHSi, RHSi); // bd
830	llvm::Value *Tmp3 = Builder.CreateAdd(Tmp1, Tmp2); // ac+bd
831
832	llvm::Value Tmp4 = Builder.CreateMul(RHSr, RHSr); // cc
833	llvm::Value Tmp5 = Builder.CreateMul(RHSi, RHSi); // dd
834	llvm::Value *Tmp6 = Builder.CreateAdd(Tmp4, Tmp5); // cc+dd
835
836	llvm::Value Tmp7 = Builder.CreateMul(LHSi, RHSr); // bc
837	llvm::Value Tmp8 = Builder.CreateMul(LHSr, RHSi); // ad
838	llvm::Value *Tmp9 = Builder.CreateSub(Tmp7, Tmp8); // bc-ad
839
840	if (Op.Ty->castAs<ComplexType>()->getElementType()->isUnsignedIntegerType()) {
841	DSTr = Builder.CreateUDiv(Tmp3, Tmp6);
842	DSTi = Builder.CreateUDiv(Tmp9, Tmp6);
843	} else {
844	DSTr = Builder.CreateSDiv(Tmp3, Tmp6);
845	DSTi = Builder.CreateSDiv(Tmp9, Tmp6);
846	}
847	}
848
849	return ComplexPairTy(DSTr, DSTi);
850	}
851
852	ComplexExprEmitter::BinOpInfo
853	ComplexExprEmitter::EmitBinOps(const BinaryOperator *E) {
854	TestAndClearIgnoreReal();
855	TestAndClearIgnoreImag();
856	BinOpInfo Ops;
857	if (E->getLHS()->getType()->isRealFloatingType())
858	Ops.LHS = ComplexPairTy(CGF.EmitScalarExpr(E->getLHS()), nullptr);
859	else
860	Ops.LHS = Visit(E->getLHS());
861	if (E->getRHS()->getType()->isRealFloatingType())
862	Ops.RHS = ComplexPairTy(CGF.EmitScalarExpr(E->getRHS()), nullptr);
863	else
864	Ops.RHS = Visit(E->getRHS());
865
866	Ops.Ty = E->getType();
867	return Ops;
868	}
869
870
871	LValue ComplexExprEmitter::
872	EmitCompoundAssignLValue(const CompoundAssignOperator *E,
873	ComplexPairTy (ComplexExprEmitter::*Func)(const BinOpInfo&),
874	RValue &Val) {
875	TestAndClearIgnoreReal();
876	TestAndClearIgnoreImag();
877	QualType LHSTy = E->getLHS()->getType();
878	if (const AtomicType *AT = LHSTy->getAs<AtomicType>())
879	LHSTy = AT->getValueType();
880
881	BinOpInfo OpInfo;
882
883	// Load the RHS and LHS operands.
884	// __block variables need to have the rhs evaluated first, plus this should
885	// improve codegen a little.
886	OpInfo.Ty = E->getComputationResultType();
887	QualType ComplexElementTy = cast<ComplexType>(OpInfo.Ty)->getElementType();
888
889	// The RHS should have been converted to the computation type.
890	if (E->getRHS()->getType()->isRealFloatingType()) {
891	getRHS()->getType())", "/home/seafit/code_projects/clang_source/clang/lib/CodeGen/CGExprComplex.cpp", 893, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(
892	getRHS()->getType())", "/home/seafit/code_projects/clang_source/clang/lib/CodeGen/CGExprComplex.cpp", 893, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true"> CGF.getContext()
893	getRHS()->getType())", "/home/seafit/code_projects/clang_source/clang/lib/CodeGen/CGExprComplex.cpp", 893, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true"> .hasSameUnqualifiedType(ComplexElementTy, E->getRHS()->getType()));
894	OpInfo.RHS = ComplexPairTy(CGF.EmitScalarExpr(E->getRHS()), nullptr);
895	} else {
896	getRHS()->getType())", "/home/seafit/code_projects/clang_source/clang/lib/CodeGen/CGExprComplex.cpp", 897, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(CGF.getContext()
897	getRHS()->getType())", "/home/seafit/code_projects/clang_source/clang/lib/CodeGen/CGExprComplex.cpp", 897, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true"> .hasSameUnqualifiedType(OpInfo.Ty, E->getRHS()->getType()));
898	OpInfo.RHS = Visit(E->getRHS());
899	}
900
901	LValue LHS = CGF.EmitLValue(E->getLHS());
902
903	// Load from the l-value and convert it.
904	SourceLocation Loc = E->getExprLoc();
905	if (LHSTy->isAnyComplexType()) {
906	ComplexPairTy LHSVal = EmitLoadOfLValue(LHS, Loc);
907	OpInfo.LHS = EmitComplexToComplexCast(LHSVal, LHSTy, OpInfo.Ty, Loc);
908	} else {
909	llvm::Value *LHSVal = CGF.EmitLoadOfScalar(LHS, Loc);
910	// For floating point real operands we can directly pass the scalar form
911	// to the binary operator emission and potentially get more efficient code.
912	if (LHSTy->isRealFloatingType()) {
913	if (!CGF.getContext().hasSameUnqualifiedType(ComplexElementTy, LHSTy))
914	LHSVal = CGF.EmitScalarConversion(LHSVal, LHSTy, ComplexElementTy, Loc);
915	OpInfo.LHS = ComplexPairTy(LHSVal, nullptr);
916	} else {
917	OpInfo.LHS = EmitScalarToComplexCast(LHSVal, LHSTy, OpInfo.Ty, Loc);
918	}
919	}
920
921	// Expand the binary operator.
922	ComplexPairTy Result = (this->*Func)(OpInfo);
923
924	// Truncate the result and store it into the LHS lvalue.
925	if (LHSTy->isAnyComplexType()) {
926	ComplexPairTy ResVal =
927	EmitComplexToComplexCast(Result, OpInfo.Ty, LHSTy, Loc);
928	EmitStoreOfComplex(ResVal, LHS, /isInit/ false);
929	Val = RValue::getComplex(ResVal);
930	} else {
931	llvm::Value *ResVal =
932	CGF.EmitComplexToScalarConversion(Result, OpInfo.Ty, LHSTy, Loc);
933	CGF.EmitStoreOfScalar(ResVal, LHS, /isInit/ false);
934	Val = RValue::get(ResVal);
935	}
936
937	return LHS;
938	}
939
940	// Compound assignments.
941	ComplexPairTy ComplexExprEmitter::
942	EmitCompoundAssign(const CompoundAssignOperator *E,
943	ComplexPairTy (ComplexExprEmitter::*Func)(const BinOpInfo&)){
944	RValue Val;
945	LValue LV = EmitCompoundAssignLValue(E, Func, Val);
946
947	// The result of an assignment in C is the assigned r-value.
948	if (!CGF.getLangOpts().CPlusPlus)
949	return Val.getComplexVal();
950
951	// If the lvalue is non-volatile, return the computed value of the assignment.
952	if (!LV.isVolatileQualified())
953	return Val.getComplexVal();
954
955	return EmitLoadOfLValue(LV, E->getExprLoc());
956	}
957
958	LValue ComplexExprEmitter::EmitBinAssignLValue(const BinaryOperator *E,
959	ComplexPairTy &Val) {
960	(0) . __assert_fail ("CGF.getContext().hasSameUnqualifiedType(E->getLHS()->getType(), E->getRHS()->getType()) && \"Invalid assignment\"", "/home/seafit/code_projects/clang_source/clang/lib/CodeGen/CGExprComplex.cpp", 962, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(CGF.getContext().hasSameUnqualifiedType(E->getLHS()->getType(),
961	(0) . __assert_fail ("CGF.getContext().hasSameUnqualifiedType(E->getLHS()->getType(), E->getRHS()->getType()) && \"Invalid assignment\"", "/home/seafit/code_projects/clang_source/clang/lib/CodeGen/CGExprComplex.cpp", 962, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true"> E->getRHS()->getType()) &&
962	(0) . __assert_fail ("CGF.getContext().hasSameUnqualifiedType(E->getLHS()->getType(), E->getRHS()->getType()) && \"Invalid assignment\"", "/home/seafit/code_projects/clang_source/clang/lib/CodeGen/CGExprComplex.cpp", 962, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true"> "Invalid assignment");
963	TestAndClearIgnoreReal();
964	TestAndClearIgnoreImag();
965
966	// Emit the RHS. __block variables need the RHS evaluated first.
967	Val = Visit(E->getRHS());
968
969	// Compute the address to store into.
970	LValue LHS = CGF.EmitLValue(E->getLHS());
971
972	// Store the result value into the LHS lvalue.
973	EmitStoreOfComplex(Val, LHS, /isInit/ false);
974
975	return LHS;
976	}
977
978	ComplexPairTy ComplexExprEmitter::VisitBinAssign(const BinaryOperator *E) {
979	ComplexPairTy Val;
980	LValue LV = EmitBinAssignLValue(E, Val);
981
982	// The result of an assignment in C is the assigned r-value.
983	if (!CGF.getLangOpts().CPlusPlus)
984	return Val;
985
986	// If the lvalue is non-volatile, return the computed value of the assignment.
987	if (!LV.isVolatileQualified())
988	return Val;
989
990	return EmitLoadOfLValue(LV, E->getExprLoc());
991	}
992
993	ComplexPairTy ComplexExprEmitter::VisitBinComma(const BinaryOperator *E) {
994	CGF.EmitIgnoredExpr(E->getLHS());
995	return Visit(E->getRHS());
996	}
997
998	ComplexPairTy ComplexExprEmitter::
999	VisitAbstractConditionalOperator(const AbstractConditionalOperator *E) {
1000	TestAndClearIgnoreReal();
1001	TestAndClearIgnoreImag();
1002	llvm::BasicBlock *LHSBlock = CGF.createBasicBlock("cond.true");
1003	llvm::BasicBlock *RHSBlock = CGF.createBasicBlock("cond.false");
1004	llvm::BasicBlock *ContBlock = CGF.createBasicBlock("cond.end");
1005
1006	// Bind the common expression if necessary.
1007	CodeGenFunction::OpaqueValueMapping binding(CGF, E);
1008
1009
1010	CodeGenFunction::ConditionalEvaluation eval(CGF);
1011	CGF.EmitBranchOnBoolExpr(E->getCond(), LHSBlock, RHSBlock,
1012	CGF.getProfileCount(E));
1013
1014	eval.begin(CGF);
1015	CGF.EmitBlock(LHSBlock);
1016	CGF.incrementProfileCounter(E);
1017	ComplexPairTy LHS = Visit(E->getTrueExpr());
1018	LHSBlock = Builder.GetInsertBlock();
1019	CGF.EmitBranch(ContBlock);
1020	eval.end(CGF);
1021
1022	eval.begin(CGF);
1023	CGF.EmitBlock(RHSBlock);
1024	ComplexPairTy RHS = Visit(E->getFalseExpr());
1025	RHSBlock = Builder.GetInsertBlock();
1026	CGF.EmitBlock(ContBlock);
1027	eval.end(CGF);
1028
1029	// Create a PHI node for the real part.
1030	llvm::PHINode *RealPN = Builder.CreatePHI(LHS.first->getType(), 2, "cond.r");
1031	RealPN->addIncoming(LHS.first, LHSBlock);
1032	RealPN->addIncoming(RHS.first, RHSBlock);
1033
1034	// Create a PHI node for the imaginary part.
1035	llvm::PHINode *ImagPN = Builder.CreatePHI(LHS.first->getType(), 2, "cond.i");
1036	ImagPN->addIncoming(LHS.second, LHSBlock);
1037	ImagPN->addIncoming(RHS.second, RHSBlock);
1038
1039	return ComplexPairTy(RealPN, ImagPN);
1040	}
1041
1042	ComplexPairTy ComplexExprEmitter::VisitChooseExpr(ChooseExpr *E) {
1043	return Visit(E->getChosenSubExpr());
1044	}
1045
1046	ComplexPairTy ComplexExprEmitter::VisitInitListExpr(InitListExpr *E) {
1047	bool Ignore = TestAndClearIgnoreReal();
1048	(void)Ignore;
1049	(0) . __assert_fail ("Ignore == false && \"init list ignored\"", "/home/seafit/code_projects/clang_source/clang/lib/CodeGen/CGExprComplex.cpp", 1049, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert (Ignore == false && "init list ignored");
1050	Ignore = TestAndClearIgnoreImag();
1051	(void)Ignore;
1052	(0) . __assert_fail ("Ignore == false && \"init list ignored\"", "/home/seafit/code_projects/clang_source/clang/lib/CodeGen/CGExprComplex.cpp", 1052, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert (Ignore == false && "init list ignored");
1053
1054	if (E->getNumInits() == 2) {
1055	llvm::Value *Real = CGF.EmitScalarExpr(E->getInit(0));
1056	llvm::Value *Imag = CGF.EmitScalarExpr(E->getInit(1));
1057	return ComplexPairTy(Real, Imag);
1058	} else if (E->getNumInits() == 1) {
1059	return Visit(E->getInit(0));
1060	}
1061
1062	// Empty init list initializes to null
1063	(0) . __assert_fail ("E->getNumInits() == 0 && \"Unexpected number of inits\"", "/home/seafit/code_projects/clang_source/clang/lib/CodeGen/CGExprComplex.cpp", 1063, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(E->getNumInits() == 0 && "Unexpected number of inits");
1064	QualType Ty = E->getType()->castAs<ComplexType>()->getElementType();
1065	llvm::Type* LTy = CGF.ConvertType(Ty);
1066	llvm::Value* zeroConstant = llvm::Constant::getNullValue(LTy);
1067	return ComplexPairTy(zeroConstant, zeroConstant);
1068	}
1069
1070	ComplexPairTy ComplexExprEmitter::VisitVAArgExpr(VAArgExpr *E) {
1071	Address ArgValue = Address::invalid();
1072	Address ArgPtr = CGF.EmitVAArg(E, ArgValue);
1073
1074	if (!ArgPtr.isValid()) {
1075	CGF.ErrorUnsupported(E, "complex va_arg expression");
1076	llvm::Type *EltTy =
1077	CGF.ConvertType(E->getType()->castAs<ComplexType>()->getElementType());
1078	llvm::Value *U = llvm::UndefValue::get(EltTy);
1079	return ComplexPairTy(U, U);
1080	}
1081
1082	return EmitLoadOfLValue(CGF.MakeAddrLValue(ArgPtr, E->getType()),
1083	E->getExprLoc());
1084	}
1085
1086	//===----------------------------------------------------------------------===//
1087	// Entry Point into this File
1088	//===----------------------------------------------------------------------===//
1089
1090	/// EmitComplexExpr - Emit the computation of the specified expression of
1091	/// complex type, ignoring the result.
1092	ComplexPairTy CodeGenFunction::EmitComplexExpr(const Expr *E, bool IgnoreReal,
1093	bool IgnoreImag) {
1094	(0) . __assert_fail ("E && getComplexType(E->getType()) && \"Invalid complex expression to emit\"", "/home/seafit/code_projects/clang_source/clang/lib/CodeGen/CGExprComplex.cpp", 1095, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(E && getComplexType(E->getType()) &&
1095	(0) . __assert_fail ("E && getComplexType(E->getType()) && \"Invalid complex expression to emit\"", "/home/seafit/code_projects/clang_source/clang/lib/CodeGen/CGExprComplex.cpp", 1095, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true"> "Invalid complex expression to emit");
1096
1097	return ComplexExprEmitter(*this, IgnoreReal, IgnoreImag)
1098	.Visit(const_cast<Expr *>(E));
1099	}
1100
1101	void CodeGenFunction::EmitComplexExprIntoLValue(const Expr *E, LValue dest,
1102	bool isInit) {
1103	(0) . __assert_fail ("E && getComplexType(E->getType()) && \"Invalid complex expression to emit\"", "/home/seafit/code_projects/clang_source/clang/lib/CodeGen/CGExprComplex.cpp", 1104, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(E && getComplexType(E->getType()) &&
1104	(0) . __assert_fail ("E && getComplexType(E->getType()) && \"Invalid complex expression to emit\"", "/home/seafit/code_projects/clang_source/clang/lib/CodeGen/CGExprComplex.cpp", 1104, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true"> "Invalid complex expression to emit");
1105	ComplexExprEmitter Emitter(*this);
1106	ComplexPairTy Val = Emitter.Visit(const_cast<Expr*>(E));
1107	Emitter.EmitStoreOfComplex(Val, dest, isInit);
1108	}
1109
1110	/// EmitStoreOfComplex - Store a complex number into the specified l-value.
1111	void CodeGenFunction::EmitStoreOfComplex(ComplexPairTy V, LValue dest,
1112	bool isInit) {
1113	ComplexExprEmitter(*this).EmitStoreOfComplex(V, dest, isInit);
1114	}
1115
1116	/// EmitLoadOfComplex - Load a complex number from the specified address.
1117	ComplexPairTy CodeGenFunction::EmitLoadOfComplex(LValue src,
1118	SourceLocation loc) {
1119	return ComplexExprEmitter(*this).EmitLoadOfLValue(src, loc);
1120	}
1121
1122	LValue CodeGenFunction::EmitComplexAssignmentLValue(const BinaryOperator *E) {
1123	getOpcode() == BO_Assign", "/home/seafit/code_projects/clang_source/clang/lib/CodeGen/CGExprComplex.cpp", 1123, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(E->getOpcode() == BO_Assign);
1124	ComplexPairTy Val; // ignored
1125	return ComplexExprEmitter(*this).EmitBinAssignLValue(E, Val);
1126	}
1127
1128	typedef ComplexPairTy (ComplexExprEmitter::*CompoundFunc)(
1129	const ComplexExprEmitter::BinOpInfo &);
1130
1131	static CompoundFunc getComplexOp(BinaryOperatorKind Op) {
1132	switch (Op) {
1133	case BO_MulAssign: return &ComplexExprEmitter::EmitBinMul;
1134	case BO_DivAssign: return &ComplexExprEmitter::EmitBinDiv;
1135	case BO_SubAssign: return &ComplexExprEmitter::EmitBinSub;
1136	case BO_AddAssign: return &ComplexExprEmitter::EmitBinAdd;
1137	default:
1138	llvm_unreachable("unexpected complex compound assignment");
1139	}
1140	}
1141
1142	LValue CodeGenFunction::
1143	EmitComplexCompoundAssignmentLValue(const CompoundAssignOperator *E) {
1144	CompoundFunc Op = getComplexOp(E->getOpcode());
1145	RValue Val;
1146	return ComplexExprEmitter(*this).EmitCompoundAssignLValue(E, Op, Val);
1147	}
1148
1149	LValue CodeGenFunction::
1150	EmitScalarCompoundAssignWithComplex(const CompoundAssignOperator *E,
1151	llvm::Value *&Result) {
1152	CompoundFunc Op = getComplexOp(E->getOpcode());
1153	RValue Val;
1154	LValue Ret = ComplexExprEmitter(*this).EmitCompoundAssignLValue(E, Op, Val);
1155	Result = Val.getScalarVal();
1156	return Ret;
1157	}
1158

clang::CodeGen::CodeGenFunction::emitAddrOfRealComponent

clang::CodeGen::CodeGenFunction::emitAddrOfImagComponent

clang::CodeGen::CodeGenFunction::EmitComplexExpr

clang::CodeGen::CodeGenFunction::EmitComplexExprIntoLValue

clang::CodeGen::CodeGenFunction::EmitStoreOfComplex

clang::CodeGen::CodeGenFunction::EmitLoadOfComplex

clang::CodeGen::CodeGenFunction::EmitComplexAssignmentLValue

clang::CodeGen::CodeGenFunction::EmitComplexCompoundAssignmentLValue

clang::CodeGen::CodeGenFunction::EmitScalarCompoundAssignWithComplex

Clang Project