1 //===-- CBackend.cpp - Library for converting LLVM code to C --------------===//
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 library converts LLVM code to C code, compilable by GCC and other C
13 //===----------------------------------------------------------------------===//
15 #include "CTargetMachine.h"
16 #include "llvm/CallingConv.h"
17 #include "llvm/Constants.h"
18 #include "llvm/DerivedTypes.h"
19 #include "llvm/Module.h"
20 #include "llvm/Instructions.h"
21 #include "llvm/Pass.h"
22 #include "llvm/PassManager.h"
23 #include "llvm/TypeSymbolTable.h"
24 #include "llvm/Intrinsics.h"
25 #include "llvm/IntrinsicInst.h"
26 #include "llvm/InlineAsm.h"
27 #include "llvm/Analysis/ConstantsScanner.h"
28 #include "llvm/Analysis/FindUsedTypes.h"
29 #include "llvm/Analysis/LoopInfo.h"
30 #include "llvm/CodeGen/Passes.h"
31 #include "llvm/CodeGen/IntrinsicLowering.h"
32 #include "llvm/Transforms/Scalar.h"
33 #include "llvm/Target/TargetMachineRegistry.h"
34 #include "llvm/Target/TargetAsmInfo.h"
35 #include "llvm/Target/TargetData.h"
36 #include "llvm/Support/CallSite.h"
37 #include "llvm/Support/CFG.h"
38 #include "llvm/Support/GetElementPtrTypeIterator.h"
39 #include "llvm/Support/InstVisitor.h"
40 #include "llvm/Support/Mangler.h"
41 #include "llvm/Support/MathExtras.h"
42 #include "llvm/Support/raw_ostream.h"
43 #include "llvm/ADT/StringExtras.h"
44 #include "llvm/ADT/STLExtras.h"
45 #include "llvm/Support/MathExtras.h"
46 #include "llvm/Config/config.h"
51 /// CBackendTargetMachineModule - Note that this is used on hosts that
52 /// cannot link in a library unless there are references into the
53 /// library. In particular, it seems that it is not possible to get
54 /// things to work on Win32 without this. Though it is unused, do not
56 extern "C" int CBackendTargetMachineModule;
57 int CBackendTargetMachineModule = 0;
59 // Register the target.
60 static RegisterTarget<CTargetMachine> X("c", "C backend");
63 /// CBackendNameAllUsedStructsAndMergeFunctions - This pass inserts names for
64 /// any unnamed structure types that are used by the program, and merges
65 /// external functions with the same name.
67 class CBackendNameAllUsedStructsAndMergeFunctions : public ModulePass {
70 CBackendNameAllUsedStructsAndMergeFunctions()
72 void getAnalysisUsage(AnalysisUsage &AU) const {
73 AU.addRequired<FindUsedTypes>();
76 virtual const char *getPassName() const {
77 return "C backend type canonicalizer";
80 virtual bool runOnModule(Module &M);
83 char CBackendNameAllUsedStructsAndMergeFunctions::ID = 0;
85 /// CWriter - This class is the main chunk of code that converts an LLVM
86 /// module to a C translation unit.
87 class CWriter : public FunctionPass, public InstVisitor<CWriter> {
89 IntrinsicLowering *IL;
92 const Module *TheModule;
93 const TargetAsmInfo* TAsm;
95 std::map<const Type *, std::string> TypeNames;
96 std::map<const ConstantFP *, unsigned> FPConstantMap;
97 std::set<Function*> intrinsicPrototypesAlreadyGenerated;
98 std::set<const Argument*> ByValParams;
103 explicit CWriter(raw_ostream &o)
104 : FunctionPass(&ID), Out(o), IL(0), Mang(0), LI(0),
105 TheModule(0), TAsm(0), TD(0) {
109 virtual const char *getPassName() const { return "C backend"; }
111 void getAnalysisUsage(AnalysisUsage &AU) const {
112 AU.addRequired<LoopInfo>();
113 AU.setPreservesAll();
116 virtual bool doInitialization(Module &M);
118 bool runOnFunction(Function &F) {
119 LI = &getAnalysis<LoopInfo>();
121 // Get rid of intrinsics we can't handle.
124 // Output all floating point constants that cannot be printed accurately.
125 printFloatingPointConstants(F);
131 virtual bool doFinalization(Module &M) {
134 FPConstantMap.clear();
137 intrinsicPrototypesAlreadyGenerated.clear();
141 raw_ostream &printType(raw_ostream &Out, const Type *Ty,
142 bool isSigned = false,
143 const std::string &VariableName = "",
144 bool IgnoreName = false,
145 const AttrListPtr &PAL = AttrListPtr());
146 std::ostream &printType(std::ostream &Out, const Type *Ty,
147 bool isSigned = false,
148 const std::string &VariableName = "",
149 bool IgnoreName = false,
150 const AttrListPtr &PAL = AttrListPtr());
151 raw_ostream &printSimpleType(raw_ostream &Out, const Type *Ty,
153 const std::string &NameSoFar = "");
154 std::ostream &printSimpleType(std::ostream &Out, const Type *Ty,
156 const std::string &NameSoFar = "");
158 void printStructReturnPointerFunctionType(raw_ostream &Out,
159 const AttrListPtr &PAL,
160 const PointerType *Ty);
162 /// writeOperandDeref - Print the result of dereferencing the specified
163 /// operand with '*'. This is equivalent to printing '*' then using
164 /// writeOperand, but avoids excess syntax in some cases.
165 void writeOperandDeref(Value *Operand) {
166 if (isAddressExposed(Operand)) {
167 // Already something with an address exposed.
168 writeOperandInternal(Operand);
171 writeOperand(Operand);
176 void writeOperand(Value *Operand, bool Static = false);
177 void writeInstComputationInline(Instruction &I);
178 void writeOperandInternal(Value *Operand, bool Static = false);
179 void writeOperandWithCast(Value* Operand, unsigned Opcode);
180 void writeOperandWithCast(Value* Operand, const ICmpInst &I);
181 bool writeInstructionCast(const Instruction &I);
183 void writeMemoryAccess(Value *Operand, const Type *OperandType,
184 bool IsVolatile, unsigned Alignment);
187 std::string InterpretASMConstraint(InlineAsm::ConstraintInfo& c);
189 void lowerIntrinsics(Function &F);
191 void printModule(Module *M);
192 void printModuleTypes(const TypeSymbolTable &ST);
193 void printContainedStructs(const Type *Ty, std::set<const Type *> &);
194 void printFloatingPointConstants(Function &F);
195 void printFloatingPointConstants(const Constant *C);
196 void printFunctionSignature(const Function *F, bool Prototype);
198 void printFunction(Function &);
199 void printBasicBlock(BasicBlock *BB);
200 void printLoop(Loop *L);
202 void printCast(unsigned opcode, const Type *SrcTy, const Type *DstTy);
203 void printConstant(Constant *CPV, bool Static);
204 void printConstantWithCast(Constant *CPV, unsigned Opcode);
205 bool printConstExprCast(const ConstantExpr *CE, bool Static);
206 void printConstantArray(ConstantArray *CPA, bool Static);
207 void printConstantVector(ConstantVector *CV, bool Static);
209 /// isAddressExposed - Return true if the specified value's name needs to
210 /// have its address taken in order to get a C value of the correct type.
211 /// This happens for global variables, byval parameters, and direct allocas.
212 bool isAddressExposed(const Value *V) const {
213 if (const Argument *A = dyn_cast<Argument>(V))
214 return ByValParams.count(A);
215 return isa<GlobalVariable>(V) || isDirectAlloca(V);
218 // isInlinableInst - Attempt to inline instructions into their uses to build
219 // trees as much as possible. To do this, we have to consistently decide
220 // what is acceptable to inline, so that variable declarations don't get
221 // printed and an extra copy of the expr is not emitted.
223 static bool isInlinableInst(const Instruction &I) {
224 // Always inline cmp instructions, even if they are shared by multiple
225 // expressions. GCC generates horrible code if we don't.
229 // Must be an expression, must be used exactly once. If it is dead, we
230 // emit it inline where it would go.
231 if (I.getType() == Type::VoidTy || !I.hasOneUse() ||
232 isa<TerminatorInst>(I) || isa<CallInst>(I) || isa<PHINode>(I) ||
233 isa<LoadInst>(I) || isa<VAArgInst>(I) || isa<InsertElementInst>(I) ||
234 isa<InsertValueInst>(I))
235 // Don't inline a load across a store or other bad things!
238 // Must not be used in inline asm, extractelement, or shufflevector.
240 const Instruction &User = cast<Instruction>(*I.use_back());
241 if (isInlineAsm(User) || isa<ExtractElementInst>(User) ||
242 isa<ShuffleVectorInst>(User))
246 // Only inline instruction it if it's use is in the same BB as the inst.
247 return I.getParent() == cast<Instruction>(I.use_back())->getParent();
250 // isDirectAlloca - Define fixed sized allocas in the entry block as direct
251 // variables which are accessed with the & operator. This causes GCC to
252 // generate significantly better code than to emit alloca calls directly.
254 static const AllocaInst *isDirectAlloca(const Value *V) {
255 const AllocaInst *AI = dyn_cast<AllocaInst>(V);
256 if (!AI) return false;
257 if (AI->isArrayAllocation())
258 return 0; // FIXME: we can also inline fixed size array allocas!
259 if (AI->getParent() != &AI->getParent()->getParent()->getEntryBlock())
264 // isInlineAsm - Check if the instruction is a call to an inline asm chunk
265 static bool isInlineAsm(const Instruction& I) {
266 if (isa<CallInst>(&I) && isa<InlineAsm>(I.getOperand(0)))
271 // Instruction visitation functions
272 friend class InstVisitor<CWriter>;
274 void visitReturnInst(ReturnInst &I);
275 void visitBranchInst(BranchInst &I);
276 void visitSwitchInst(SwitchInst &I);
277 void visitInvokeInst(InvokeInst &I) {
278 assert(0 && "Lowerinvoke pass didn't work!");
281 void visitUnwindInst(UnwindInst &I) {
282 assert(0 && "Lowerinvoke pass didn't work!");
284 void visitUnreachableInst(UnreachableInst &I);
286 void visitPHINode(PHINode &I);
287 void visitBinaryOperator(Instruction &I);
288 void visitICmpInst(ICmpInst &I);
289 void visitFCmpInst(FCmpInst &I);
291 void visitCastInst (CastInst &I);
292 void visitSelectInst(SelectInst &I);
293 void visitCallInst (CallInst &I);
294 void visitInlineAsm(CallInst &I);
295 bool visitBuiltinCall(CallInst &I, Intrinsic::ID ID, bool &WroteCallee);
297 void visitMallocInst(MallocInst &I);
298 void visitAllocaInst(AllocaInst &I);
299 void visitFreeInst (FreeInst &I);
300 void visitLoadInst (LoadInst &I);
301 void visitStoreInst (StoreInst &I);
302 void visitGetElementPtrInst(GetElementPtrInst &I);
303 void visitVAArgInst (VAArgInst &I);
305 void visitInsertElementInst(InsertElementInst &I);
306 void visitExtractElementInst(ExtractElementInst &I);
307 void visitShuffleVectorInst(ShuffleVectorInst &SVI);
309 void visitInsertValueInst(InsertValueInst &I);
310 void visitExtractValueInst(ExtractValueInst &I);
312 void visitInstruction(Instruction &I) {
313 cerr << "C Writer does not know about " << I;
317 void outputLValue(Instruction *I) {
318 Out << " " << GetValueName(I) << " = ";
321 bool isGotoCodeNecessary(BasicBlock *From, BasicBlock *To);
322 void printPHICopiesForSuccessor(BasicBlock *CurBlock,
323 BasicBlock *Successor, unsigned Indent);
324 void printBranchToBlock(BasicBlock *CurBlock, BasicBlock *SuccBlock,
326 void printGEPExpression(Value *Ptr, gep_type_iterator I,
327 gep_type_iterator E, bool Static);
329 std::string GetValueName(const Value *Operand);
333 char CWriter::ID = 0;
335 /// This method inserts names for any unnamed structure types that are used by
336 /// the program, and removes names from structure types that are not used by the
339 bool CBackendNameAllUsedStructsAndMergeFunctions::runOnModule(Module &M) {
340 // Get a set of types that are used by the program...
341 std::set<const Type *> UT = getAnalysis<FindUsedTypes>().getTypes();
343 // Loop over the module symbol table, removing types from UT that are
344 // already named, and removing names for types that are not used.
346 TypeSymbolTable &TST = M.getTypeSymbolTable();
347 for (TypeSymbolTable::iterator TI = TST.begin(), TE = TST.end();
349 TypeSymbolTable::iterator I = TI++;
351 // If this isn't a struct or array type, remove it from our set of types
352 // to name. This simplifies emission later.
353 if (!isa<StructType>(I->second) && !isa<OpaqueType>(I->second) &&
354 !isa<ArrayType>(I->second)) {
357 // If this is not used, remove it from the symbol table.
358 std::set<const Type *>::iterator UTI = UT.find(I->second);
362 UT.erase(UTI); // Only keep one name for this type.
366 // UT now contains types that are not named. Loop over it, naming
369 bool Changed = false;
370 unsigned RenameCounter = 0;
371 for (std::set<const Type *>::const_iterator I = UT.begin(), E = UT.end();
373 if (isa<StructType>(*I) || isa<ArrayType>(*I)) {
374 while (M.addTypeName("unnamed"+utostr(RenameCounter), *I))
380 // Loop over all external functions and globals. If we have two with
381 // identical names, merge them.
382 // FIXME: This code should disappear when we don't allow values with the same
383 // names when they have different types!
384 std::map<std::string, GlobalValue*> ExtSymbols;
385 for (Module::iterator I = M.begin(), E = M.end(); I != E;) {
387 if (GV->isDeclaration() && GV->hasName()) {
388 std::pair<std::map<std::string, GlobalValue*>::iterator, bool> X
389 = ExtSymbols.insert(std::make_pair(GV->getName(), GV));
391 // Found a conflict, replace this global with the previous one.
392 GlobalValue *OldGV = X.first->second;
393 GV->replaceAllUsesWith(ConstantExpr::getBitCast(OldGV, GV->getType()));
394 GV->eraseFromParent();
399 // Do the same for globals.
400 for (Module::global_iterator I = M.global_begin(), E = M.global_end();
402 GlobalVariable *GV = I++;
403 if (GV->isDeclaration() && GV->hasName()) {
404 std::pair<std::map<std::string, GlobalValue*>::iterator, bool> X
405 = ExtSymbols.insert(std::make_pair(GV->getName(), GV));
407 // Found a conflict, replace this global with the previous one.
408 GlobalValue *OldGV = X.first->second;
409 GV->replaceAllUsesWith(ConstantExpr::getBitCast(OldGV, GV->getType()));
410 GV->eraseFromParent();
419 /// printStructReturnPointerFunctionType - This is like printType for a struct
420 /// return type, except, instead of printing the type as void (*)(Struct*, ...)
421 /// print it as "Struct (*)(...)", for struct return functions.
422 void CWriter::printStructReturnPointerFunctionType(raw_ostream &Out,
423 const AttrListPtr &PAL,
424 const PointerType *TheTy) {
425 const FunctionType *FTy = cast<FunctionType>(TheTy->getElementType());
426 std::stringstream FunctionInnards;
427 FunctionInnards << " (*) (";
428 bool PrintedType = false;
430 FunctionType::param_iterator I = FTy->param_begin(), E = FTy->param_end();
431 const Type *RetTy = cast<PointerType>(I->get())->getElementType();
433 for (++I, ++Idx; I != E; ++I, ++Idx) {
435 FunctionInnards << ", ";
436 const Type *ArgTy = *I;
437 if (PAL.paramHasAttr(Idx, Attribute::ByVal)) {
438 assert(isa<PointerType>(ArgTy));
439 ArgTy = cast<PointerType>(ArgTy)->getElementType();
441 printType(FunctionInnards, ArgTy,
442 /*isSigned=*/PAL.paramHasAttr(Idx, Attribute::SExt), "");
445 if (FTy->isVarArg()) {
447 FunctionInnards << ", ...";
448 } else if (!PrintedType) {
449 FunctionInnards << "void";
451 FunctionInnards << ')';
452 std::string tstr = FunctionInnards.str();
453 printType(Out, RetTy,
454 /*isSigned=*/PAL.paramHasAttr(0, Attribute::SExt), tstr);
458 CWriter::printSimpleType(raw_ostream &Out, const Type *Ty, bool isSigned,
459 const std::string &NameSoFar) {
460 assert((Ty->isPrimitiveType() || Ty->isInteger() || isa<VectorType>(Ty)) &&
461 "Invalid type for printSimpleType");
462 switch (Ty->getTypeID()) {
463 case Type::VoidTyID: return Out << "void " << NameSoFar;
464 case Type::IntegerTyID: {
465 unsigned NumBits = cast<IntegerType>(Ty)->getBitWidth();
467 return Out << "bool " << NameSoFar;
468 else if (NumBits <= 8)
469 return Out << (isSigned?"signed":"unsigned") << " char " << NameSoFar;
470 else if (NumBits <= 16)
471 return Out << (isSigned?"signed":"unsigned") << " short " << NameSoFar;
472 else if (NumBits <= 32)
473 return Out << (isSigned?"signed":"unsigned") << " int " << NameSoFar;
474 else if (NumBits <= 64)
475 return Out << (isSigned?"signed":"unsigned") << " long long "<< NameSoFar;
477 assert(NumBits <= 128 && "Bit widths > 128 not implemented yet");
478 return Out << (isSigned?"llvmInt128":"llvmUInt128") << " " << NameSoFar;
481 case Type::FloatTyID: return Out << "float " << NameSoFar;
482 case Type::DoubleTyID: return Out << "double " << NameSoFar;
483 // Lacking emulation of FP80 on PPC, etc., we assume whichever of these is
484 // present matches host 'long double'.
485 case Type::X86_FP80TyID:
486 case Type::PPC_FP128TyID:
487 case Type::FP128TyID: return Out << "long double " << NameSoFar;
489 case Type::VectorTyID: {
490 const VectorType *VTy = cast<VectorType>(Ty);
491 return printSimpleType(Out, VTy->getElementType(), isSigned,
492 " __attribute__((vector_size(" +
493 utostr(TD->getTypePaddedSize(VTy)) + " ))) " + NameSoFar);
497 cerr << "Unknown primitive type: " << *Ty << "\n";
503 CWriter::printSimpleType(std::ostream &Out, const Type *Ty, bool isSigned,
504 const std::string &NameSoFar) {
505 assert((Ty->isPrimitiveType() || Ty->isInteger() || isa<VectorType>(Ty)) &&
506 "Invalid type for printSimpleType");
507 switch (Ty->getTypeID()) {
508 case Type::VoidTyID: return Out << "void " << NameSoFar;
509 case Type::IntegerTyID: {
510 unsigned NumBits = cast<IntegerType>(Ty)->getBitWidth();
512 return Out << "bool " << NameSoFar;
513 else if (NumBits <= 8)
514 return Out << (isSigned?"signed":"unsigned") << " char " << NameSoFar;
515 else if (NumBits <= 16)
516 return Out << (isSigned?"signed":"unsigned") << " short " << NameSoFar;
517 else if (NumBits <= 32)
518 return Out << (isSigned?"signed":"unsigned") << " int " << NameSoFar;
519 else if (NumBits <= 64)
520 return Out << (isSigned?"signed":"unsigned") << " long long "<< NameSoFar;
522 assert(NumBits <= 128 && "Bit widths > 128 not implemented yet");
523 return Out << (isSigned?"llvmInt128":"llvmUInt128") << " " << NameSoFar;
526 case Type::FloatTyID: return Out << "float " << NameSoFar;
527 case Type::DoubleTyID: return Out << "double " << NameSoFar;
528 // Lacking emulation of FP80 on PPC, etc., we assume whichever of these is
529 // present matches host 'long double'.
530 case Type::X86_FP80TyID:
531 case Type::PPC_FP128TyID:
532 case Type::FP128TyID: return Out << "long double " << NameSoFar;
534 case Type::VectorTyID: {
535 const VectorType *VTy = cast<VectorType>(Ty);
536 return printSimpleType(Out, VTy->getElementType(), isSigned,
537 " __attribute__((vector_size(" +
538 utostr(TD->getTypePaddedSize(VTy)) + " ))) " + NameSoFar);
542 cerr << "Unknown primitive type: " << *Ty << "\n";
547 // Pass the Type* and the variable name and this prints out the variable
550 raw_ostream &CWriter::printType(raw_ostream &Out, const Type *Ty,
551 bool isSigned, const std::string &NameSoFar,
552 bool IgnoreName, const AttrListPtr &PAL) {
553 if (Ty->isPrimitiveType() || Ty->isInteger() || isa<VectorType>(Ty)) {
554 printSimpleType(Out, Ty, isSigned, NameSoFar);
558 // Check to see if the type is named.
559 if (!IgnoreName || isa<OpaqueType>(Ty)) {
560 std::map<const Type *, std::string>::iterator I = TypeNames.find(Ty);
561 if (I != TypeNames.end()) return Out << I->second << ' ' << NameSoFar;
564 switch (Ty->getTypeID()) {
565 case Type::FunctionTyID: {
566 const FunctionType *FTy = cast<FunctionType>(Ty);
567 std::stringstream FunctionInnards;
568 FunctionInnards << " (" << NameSoFar << ") (";
570 for (FunctionType::param_iterator I = FTy->param_begin(),
571 E = FTy->param_end(); I != E; ++I) {
572 const Type *ArgTy = *I;
573 if (PAL.paramHasAttr(Idx, Attribute::ByVal)) {
574 assert(isa<PointerType>(ArgTy));
575 ArgTy = cast<PointerType>(ArgTy)->getElementType();
577 if (I != FTy->param_begin())
578 FunctionInnards << ", ";
579 printType(FunctionInnards, ArgTy,
580 /*isSigned=*/PAL.paramHasAttr(Idx, Attribute::SExt), "");
583 if (FTy->isVarArg()) {
584 if (FTy->getNumParams())
585 FunctionInnards << ", ...";
586 } else if (!FTy->getNumParams()) {
587 FunctionInnards << "void";
589 FunctionInnards << ')';
590 std::string tstr = FunctionInnards.str();
591 printType(Out, FTy->getReturnType(),
592 /*isSigned=*/PAL.paramHasAttr(0, Attribute::SExt), tstr);
595 case Type::StructTyID: {
596 const StructType *STy = cast<StructType>(Ty);
597 Out << NameSoFar + " {\n";
599 for (StructType::element_iterator I = STy->element_begin(),
600 E = STy->element_end(); I != E; ++I) {
602 printType(Out, *I, false, "field" + utostr(Idx++));
607 Out << " __attribute__ ((packed))";
611 case Type::PointerTyID: {
612 const PointerType *PTy = cast<PointerType>(Ty);
613 std::string ptrName = "*" + NameSoFar;
615 if (isa<ArrayType>(PTy->getElementType()) ||
616 isa<VectorType>(PTy->getElementType()))
617 ptrName = "(" + ptrName + ")";
620 // Must be a function ptr cast!
621 return printType(Out, PTy->getElementType(), false, ptrName, true, PAL);
622 return printType(Out, PTy->getElementType(), false, ptrName);
625 case Type::ArrayTyID: {
626 const ArrayType *ATy = cast<ArrayType>(Ty);
627 unsigned NumElements = ATy->getNumElements();
628 if (NumElements == 0) NumElements = 1;
629 // Arrays are wrapped in structs to allow them to have normal
630 // value semantics (avoiding the array "decay").
631 Out << NameSoFar << " { ";
632 printType(Out, ATy->getElementType(), false,
633 "array[" + utostr(NumElements) + "]");
637 case Type::OpaqueTyID: {
638 static int Count = 0;
639 std::string TyName = "struct opaque_" + itostr(Count++);
640 assert(TypeNames.find(Ty) == TypeNames.end());
641 TypeNames[Ty] = TyName;
642 return Out << TyName << ' ' << NameSoFar;
645 assert(0 && "Unhandled case in getTypeProps!");
652 // Pass the Type* and the variable name and this prints out the variable
655 std::ostream &CWriter::printType(std::ostream &Out, const Type *Ty,
656 bool isSigned, const std::string &NameSoFar,
657 bool IgnoreName, const AttrListPtr &PAL) {
658 if (Ty->isPrimitiveType() || Ty->isInteger() || isa<VectorType>(Ty)) {
659 printSimpleType(Out, Ty, isSigned, NameSoFar);
663 // Check to see if the type is named.
664 if (!IgnoreName || isa<OpaqueType>(Ty)) {
665 std::map<const Type *, std::string>::iterator I = TypeNames.find(Ty);
666 if (I != TypeNames.end()) return Out << I->second << ' ' << NameSoFar;
669 switch (Ty->getTypeID()) {
670 case Type::FunctionTyID: {
671 const FunctionType *FTy = cast<FunctionType>(Ty);
672 std::stringstream FunctionInnards;
673 FunctionInnards << " (" << NameSoFar << ") (";
675 for (FunctionType::param_iterator I = FTy->param_begin(),
676 E = FTy->param_end(); I != E; ++I) {
677 const Type *ArgTy = *I;
678 if (PAL.paramHasAttr(Idx, Attribute::ByVal)) {
679 assert(isa<PointerType>(ArgTy));
680 ArgTy = cast<PointerType>(ArgTy)->getElementType();
682 if (I != FTy->param_begin())
683 FunctionInnards << ", ";
684 printType(FunctionInnards, ArgTy,
685 /*isSigned=*/PAL.paramHasAttr(Idx, Attribute::SExt), "");
688 if (FTy->isVarArg()) {
689 if (FTy->getNumParams())
690 FunctionInnards << ", ...";
691 } else if (!FTy->getNumParams()) {
692 FunctionInnards << "void";
694 FunctionInnards << ')';
695 std::string tstr = FunctionInnards.str();
696 printType(Out, FTy->getReturnType(),
697 /*isSigned=*/PAL.paramHasAttr(0, Attribute::SExt), tstr);
700 case Type::StructTyID: {
701 const StructType *STy = cast<StructType>(Ty);
702 Out << NameSoFar + " {\n";
704 for (StructType::element_iterator I = STy->element_begin(),
705 E = STy->element_end(); I != E; ++I) {
707 printType(Out, *I, false, "field" + utostr(Idx++));
712 Out << " __attribute__ ((packed))";
716 case Type::PointerTyID: {
717 const PointerType *PTy = cast<PointerType>(Ty);
718 std::string ptrName = "*" + NameSoFar;
720 if (isa<ArrayType>(PTy->getElementType()) ||
721 isa<VectorType>(PTy->getElementType()))
722 ptrName = "(" + ptrName + ")";
725 // Must be a function ptr cast!
726 return printType(Out, PTy->getElementType(), false, ptrName, true, PAL);
727 return printType(Out, PTy->getElementType(), false, ptrName);
730 case Type::ArrayTyID: {
731 const ArrayType *ATy = cast<ArrayType>(Ty);
732 unsigned NumElements = ATy->getNumElements();
733 if (NumElements == 0) NumElements = 1;
734 // Arrays are wrapped in structs to allow them to have normal
735 // value semantics (avoiding the array "decay").
736 Out << NameSoFar << " { ";
737 printType(Out, ATy->getElementType(), false,
738 "array[" + utostr(NumElements) + "]");
742 case Type::OpaqueTyID: {
743 static int Count = 0;
744 std::string TyName = "struct opaque_" + itostr(Count++);
745 assert(TypeNames.find(Ty) == TypeNames.end());
746 TypeNames[Ty] = TyName;
747 return Out << TyName << ' ' << NameSoFar;
750 assert(0 && "Unhandled case in getTypeProps!");
757 void CWriter::printConstantArray(ConstantArray *CPA, bool Static) {
759 // As a special case, print the array as a string if it is an array of
760 // ubytes or an array of sbytes with positive values.
762 const Type *ETy = CPA->getType()->getElementType();
763 bool isString = (ETy == Type::Int8Ty || ETy == Type::Int8Ty);
765 // Make sure the last character is a null char, as automatically added by C
766 if (isString && (CPA->getNumOperands() == 0 ||
767 !cast<Constant>(*(CPA->op_end()-1))->isNullValue()))
772 // Keep track of whether the last number was a hexadecimal escape
773 bool LastWasHex = false;
775 // Do not include the last character, which we know is null
776 for (unsigned i = 0, e = CPA->getNumOperands()-1; i != e; ++i) {
777 unsigned char C = cast<ConstantInt>(CPA->getOperand(i))->getZExtValue();
779 // Print it out literally if it is a printable character. The only thing
780 // to be careful about is when the last letter output was a hex escape
781 // code, in which case we have to be careful not to print out hex digits
782 // explicitly (the C compiler thinks it is a continuation of the previous
783 // character, sheesh...)
785 if (isprint(C) && (!LastWasHex || !isxdigit(C))) {
787 if (C == '"' || C == '\\')
788 Out << "\\" << (char)C;
794 case '\n': Out << "\\n"; break;
795 case '\t': Out << "\\t"; break;
796 case '\r': Out << "\\r"; break;
797 case '\v': Out << "\\v"; break;
798 case '\a': Out << "\\a"; break;
799 case '\"': Out << "\\\""; break;
800 case '\'': Out << "\\\'"; break;
803 Out << (char)(( C/16 < 10) ? ( C/16 +'0') : ( C/16 -10+'A'));
804 Out << (char)(((C&15) < 10) ? ((C&15)+'0') : ((C&15)-10+'A'));
813 if (CPA->getNumOperands()) {
815 printConstant(cast<Constant>(CPA->getOperand(0)), Static);
816 for (unsigned i = 1, e = CPA->getNumOperands(); i != e; ++i) {
818 printConstant(cast<Constant>(CPA->getOperand(i)), Static);
825 void CWriter::printConstantVector(ConstantVector *CP, bool Static) {
827 if (CP->getNumOperands()) {
829 printConstant(cast<Constant>(CP->getOperand(0)), Static);
830 for (unsigned i = 1, e = CP->getNumOperands(); i != e; ++i) {
832 printConstant(cast<Constant>(CP->getOperand(i)), Static);
838 // isFPCSafeToPrint - Returns true if we may assume that CFP may be written out
839 // textually as a double (rather than as a reference to a stack-allocated
840 // variable). We decide this by converting CFP to a string and back into a
841 // double, and then checking whether the conversion results in a bit-equal
842 // double to the original value of CFP. This depends on us and the target C
843 // compiler agreeing on the conversion process (which is pretty likely since we
844 // only deal in IEEE FP).
846 static bool isFPCSafeToPrint(const ConstantFP *CFP) {
848 // Do long doubles in hex for now.
849 if (CFP->getType() != Type::FloatTy && CFP->getType() != Type::DoubleTy)
851 APFloat APF = APFloat(CFP->getValueAPF()); // copy
852 if (CFP->getType() == Type::FloatTy)
853 APF.convert(APFloat::IEEEdouble, APFloat::rmNearestTiesToEven, &ignored);
854 #if HAVE_PRINTF_A && ENABLE_CBE_PRINTF_A
856 sprintf(Buffer, "%a", APF.convertToDouble());
857 if (!strncmp(Buffer, "0x", 2) ||
858 !strncmp(Buffer, "-0x", 3) ||
859 !strncmp(Buffer, "+0x", 3))
860 return APF.bitwiseIsEqual(APFloat(atof(Buffer)));
863 std::string StrVal = ftostr(APF);
865 while (StrVal[0] == ' ')
866 StrVal.erase(StrVal.begin());
868 // Check to make sure that the stringized number is not some string like "Inf"
869 // or NaN. Check that the string matches the "[-+]?[0-9]" regex.
870 if ((StrVal[0] >= '0' && StrVal[0] <= '9') ||
871 ((StrVal[0] == '-' || StrVal[0] == '+') &&
872 (StrVal[1] >= '0' && StrVal[1] <= '9')))
873 // Reparse stringized version!
874 return APF.bitwiseIsEqual(APFloat(atof(StrVal.c_str())));
879 /// Print out the casting for a cast operation. This does the double casting
880 /// necessary for conversion to the destination type, if necessary.
881 /// @brief Print a cast
882 void CWriter::printCast(unsigned opc, const Type *SrcTy, const Type *DstTy) {
883 // Print the destination type cast
885 case Instruction::UIToFP:
886 case Instruction::SIToFP:
887 case Instruction::IntToPtr:
888 case Instruction::Trunc:
889 case Instruction::BitCast:
890 case Instruction::FPExt:
891 case Instruction::FPTrunc: // For these the DstTy sign doesn't matter
893 printType(Out, DstTy);
896 case Instruction::ZExt:
897 case Instruction::PtrToInt:
898 case Instruction::FPToUI: // For these, make sure we get an unsigned dest
900 printSimpleType(Out, DstTy, false);
903 case Instruction::SExt:
904 case Instruction::FPToSI: // For these, make sure we get a signed dest
906 printSimpleType(Out, DstTy, true);
910 assert(0 && "Invalid cast opcode");
913 // Print the source type cast
915 case Instruction::UIToFP:
916 case Instruction::ZExt:
918 printSimpleType(Out, SrcTy, false);
921 case Instruction::SIToFP:
922 case Instruction::SExt:
924 printSimpleType(Out, SrcTy, true);
927 case Instruction::IntToPtr:
928 case Instruction::PtrToInt:
929 // Avoid "cast to pointer from integer of different size" warnings
930 Out << "(unsigned long)";
932 case Instruction::Trunc:
933 case Instruction::BitCast:
934 case Instruction::FPExt:
935 case Instruction::FPTrunc:
936 case Instruction::FPToSI:
937 case Instruction::FPToUI:
938 break; // These don't need a source cast.
940 assert(0 && "Invalid cast opcode");
945 // printConstant - The LLVM Constant to C Constant converter.
946 void CWriter::printConstant(Constant *CPV, bool Static) {
947 if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(CPV)) {
948 switch (CE->getOpcode()) {
949 case Instruction::Trunc:
950 case Instruction::ZExt:
951 case Instruction::SExt:
952 case Instruction::FPTrunc:
953 case Instruction::FPExt:
954 case Instruction::UIToFP:
955 case Instruction::SIToFP:
956 case Instruction::FPToUI:
957 case Instruction::FPToSI:
958 case Instruction::PtrToInt:
959 case Instruction::IntToPtr:
960 case Instruction::BitCast:
962 printCast(CE->getOpcode(), CE->getOperand(0)->getType(), CE->getType());
963 if (CE->getOpcode() == Instruction::SExt &&
964 CE->getOperand(0)->getType() == Type::Int1Ty) {
965 // Make sure we really sext from bool here by subtracting from 0
968 printConstant(CE->getOperand(0), Static);
969 if (CE->getType() == Type::Int1Ty &&
970 (CE->getOpcode() == Instruction::Trunc ||
971 CE->getOpcode() == Instruction::FPToUI ||
972 CE->getOpcode() == Instruction::FPToSI ||
973 CE->getOpcode() == Instruction::PtrToInt)) {
974 // Make sure we really truncate to bool here by anding with 1
980 case Instruction::GetElementPtr:
982 printGEPExpression(CE->getOperand(0), gep_type_begin(CPV),
983 gep_type_end(CPV), Static);
986 case Instruction::Select:
988 printConstant(CE->getOperand(0), Static);
990 printConstant(CE->getOperand(1), Static);
992 printConstant(CE->getOperand(2), Static);
995 case Instruction::Add:
996 case Instruction::Sub:
997 case Instruction::Mul:
998 case Instruction::SDiv:
999 case Instruction::UDiv:
1000 case Instruction::FDiv:
1001 case Instruction::URem:
1002 case Instruction::SRem:
1003 case Instruction::FRem:
1004 case Instruction::And:
1005 case Instruction::Or:
1006 case Instruction::Xor:
1007 case Instruction::ICmp:
1008 case Instruction::Shl:
1009 case Instruction::LShr:
1010 case Instruction::AShr:
1013 bool NeedsClosingParens = printConstExprCast(CE, Static);
1014 printConstantWithCast(CE->getOperand(0), CE->getOpcode());
1015 switch (CE->getOpcode()) {
1016 case Instruction::Add: Out << " + "; break;
1017 case Instruction::Sub: Out << " - "; break;
1018 case Instruction::Mul: Out << " * "; break;
1019 case Instruction::URem:
1020 case Instruction::SRem:
1021 case Instruction::FRem: Out << " % "; break;
1022 case Instruction::UDiv:
1023 case Instruction::SDiv:
1024 case Instruction::FDiv: Out << " / "; break;
1025 case Instruction::And: Out << " & "; break;
1026 case Instruction::Or: Out << " | "; break;
1027 case Instruction::Xor: Out << " ^ "; break;
1028 case Instruction::Shl: Out << " << "; break;
1029 case Instruction::LShr:
1030 case Instruction::AShr: Out << " >> "; break;
1031 case Instruction::ICmp:
1032 switch (CE->getPredicate()) {
1033 case ICmpInst::ICMP_EQ: Out << " == "; break;
1034 case ICmpInst::ICMP_NE: Out << " != "; break;
1035 case ICmpInst::ICMP_SLT:
1036 case ICmpInst::ICMP_ULT: Out << " < "; break;
1037 case ICmpInst::ICMP_SLE:
1038 case ICmpInst::ICMP_ULE: Out << " <= "; break;
1039 case ICmpInst::ICMP_SGT:
1040 case ICmpInst::ICMP_UGT: Out << " > "; break;
1041 case ICmpInst::ICMP_SGE:
1042 case ICmpInst::ICMP_UGE: Out << " >= "; break;
1043 default: assert(0 && "Illegal ICmp predicate");
1046 default: assert(0 && "Illegal opcode here!");
1048 printConstantWithCast(CE->getOperand(1), CE->getOpcode());
1049 if (NeedsClosingParens)
1054 case Instruction::FCmp: {
1056 bool NeedsClosingParens = printConstExprCast(CE, Static);
1057 if (CE->getPredicate() == FCmpInst::FCMP_FALSE)
1059 else if (CE->getPredicate() == FCmpInst::FCMP_TRUE)
1063 switch (CE->getPredicate()) {
1064 default: assert(0 && "Illegal FCmp predicate");
1065 case FCmpInst::FCMP_ORD: op = "ord"; break;
1066 case FCmpInst::FCMP_UNO: op = "uno"; break;
1067 case FCmpInst::FCMP_UEQ: op = "ueq"; break;
1068 case FCmpInst::FCMP_UNE: op = "une"; break;
1069 case FCmpInst::FCMP_ULT: op = "ult"; break;
1070 case FCmpInst::FCMP_ULE: op = "ule"; break;
1071 case FCmpInst::FCMP_UGT: op = "ugt"; break;
1072 case FCmpInst::FCMP_UGE: op = "uge"; break;
1073 case FCmpInst::FCMP_OEQ: op = "oeq"; break;
1074 case FCmpInst::FCMP_ONE: op = "one"; break;
1075 case FCmpInst::FCMP_OLT: op = "olt"; break;
1076 case FCmpInst::FCMP_OLE: op = "ole"; break;
1077 case FCmpInst::FCMP_OGT: op = "ogt"; break;
1078 case FCmpInst::FCMP_OGE: op = "oge"; break;
1080 Out << "llvm_fcmp_" << op << "(";
1081 printConstantWithCast(CE->getOperand(0), CE->getOpcode());
1083 printConstantWithCast(CE->getOperand(1), CE->getOpcode());
1086 if (NeedsClosingParens)
1092 cerr << "CWriter Error: Unhandled constant expression: "
1096 } else if (isa<UndefValue>(CPV) && CPV->getType()->isSingleValueType()) {
1098 printType(Out, CPV->getType()); // sign doesn't matter
1099 Out << ")/*UNDEF*/";
1100 if (!isa<VectorType>(CPV->getType())) {
1108 if (ConstantInt *CI = dyn_cast<ConstantInt>(CPV)) {
1109 const Type* Ty = CI->getType();
1110 if (Ty == Type::Int1Ty)
1111 Out << (CI->getZExtValue() ? '1' : '0');
1112 else if (Ty == Type::Int32Ty)
1113 Out << CI->getZExtValue() << 'u';
1114 else if (Ty->getPrimitiveSizeInBits() > 32)
1115 Out << CI->getZExtValue() << "ull";
1118 printSimpleType(Out, Ty, false) << ')';
1119 if (CI->isMinValue(true))
1120 Out << CI->getZExtValue() << 'u';
1122 Out << CI->getSExtValue();
1128 switch (CPV->getType()->getTypeID()) {
1129 case Type::FloatTyID:
1130 case Type::DoubleTyID:
1131 case Type::X86_FP80TyID:
1132 case Type::PPC_FP128TyID:
1133 case Type::FP128TyID: {
1134 ConstantFP *FPC = cast<ConstantFP>(CPV);
1135 std::map<const ConstantFP*, unsigned>::iterator I = FPConstantMap.find(FPC);
1136 if (I != FPConstantMap.end()) {
1137 // Because of FP precision problems we must load from a stack allocated
1138 // value that holds the value in hex.
1139 Out << "(*(" << (FPC->getType() == Type::FloatTy ? "float" :
1140 FPC->getType() == Type::DoubleTy ? "double" :
1142 << "*)&FPConstant" << I->second << ')';
1145 if (FPC->getType() == Type::FloatTy)
1146 V = FPC->getValueAPF().convertToFloat();
1147 else if (FPC->getType() == Type::DoubleTy)
1148 V = FPC->getValueAPF().convertToDouble();
1150 // Long double. Convert the number to double, discarding precision.
1151 // This is not awesome, but it at least makes the CBE output somewhat
1153 APFloat Tmp = FPC->getValueAPF();
1155 Tmp.convert(APFloat::IEEEdouble, APFloat::rmTowardZero, &LosesInfo);
1156 V = Tmp.convertToDouble();
1162 // FIXME the actual NaN bits should be emitted.
1163 // The prefix for a quiet NaN is 0x7FF8. For a signalling NaN,
1165 const unsigned long QuietNaN = 0x7ff8UL;
1166 //const unsigned long SignalNaN = 0x7ff4UL;
1168 // We need to grab the first part of the FP #
1171 uint64_t ll = DoubleToBits(V);
1172 sprintf(Buffer, "0x%llx", static_cast<long long>(ll));
1174 std::string Num(&Buffer[0], &Buffer[6]);
1175 unsigned long Val = strtoul(Num.c_str(), 0, 16);
1177 if (FPC->getType() == Type::FloatTy)
1178 Out << "LLVM_NAN" << (Val == QuietNaN ? "" : "S") << "F(\""
1179 << Buffer << "\") /*nan*/ ";
1181 Out << "LLVM_NAN" << (Val == QuietNaN ? "" : "S") << "(\""
1182 << Buffer << "\") /*nan*/ ";
1183 } else if (IsInf(V)) {
1185 if (V < 0) Out << '-';
1186 Out << "LLVM_INF" << (FPC->getType() == Type::FloatTy ? "F" : "")
1190 #if HAVE_PRINTF_A && ENABLE_CBE_PRINTF_A
1191 // Print out the constant as a floating point number.
1193 sprintf(Buffer, "%a", V);
1196 Num = ftostr(FPC->getValueAPF());
1204 case Type::ArrayTyID:
1205 // Use C99 compound expression literal initializer syntax.
1208 printType(Out, CPV->getType());
1211 Out << "{ "; // Arrays are wrapped in struct types.
1212 if (ConstantArray *CA = dyn_cast<ConstantArray>(CPV)) {
1213 printConstantArray(CA, Static);
1215 assert(isa<ConstantAggregateZero>(CPV) || isa<UndefValue>(CPV));
1216 const ArrayType *AT = cast<ArrayType>(CPV->getType());
1218 if (AT->getNumElements()) {
1220 Constant *CZ = Constant::getNullValue(AT->getElementType());
1221 printConstant(CZ, Static);
1222 for (unsigned i = 1, e = AT->getNumElements(); i != e; ++i) {
1224 printConstant(CZ, Static);
1229 Out << " }"; // Arrays are wrapped in struct types.
1232 case Type::VectorTyID:
1233 // Use C99 compound expression literal initializer syntax.
1236 printType(Out, CPV->getType());
1239 if (ConstantVector *CV = dyn_cast<ConstantVector>(CPV)) {
1240 printConstantVector(CV, Static);
1242 assert(isa<ConstantAggregateZero>(CPV) || isa<UndefValue>(CPV));
1243 const VectorType *VT = cast<VectorType>(CPV->getType());
1245 Constant *CZ = Constant::getNullValue(VT->getElementType());
1246 printConstant(CZ, Static);
1247 for (unsigned i = 1, e = VT->getNumElements(); i != e; ++i) {
1249 printConstant(CZ, Static);
1255 case Type::StructTyID:
1256 // Use C99 compound expression literal initializer syntax.
1259 printType(Out, CPV->getType());
1262 if (isa<ConstantAggregateZero>(CPV) || isa<UndefValue>(CPV)) {
1263 const StructType *ST = cast<StructType>(CPV->getType());
1265 if (ST->getNumElements()) {
1267 printConstant(Constant::getNullValue(ST->getElementType(0)), Static);
1268 for (unsigned i = 1, e = ST->getNumElements(); i != e; ++i) {
1270 printConstant(Constant::getNullValue(ST->getElementType(i)), Static);
1276 if (CPV->getNumOperands()) {
1278 printConstant(cast<Constant>(CPV->getOperand(0)), Static);
1279 for (unsigned i = 1, e = CPV->getNumOperands(); i != e; ++i) {
1281 printConstant(cast<Constant>(CPV->getOperand(i)), Static);
1288 case Type::PointerTyID:
1289 if (isa<ConstantPointerNull>(CPV)) {
1291 printType(Out, CPV->getType()); // sign doesn't matter
1292 Out << ")/*NULL*/0)";
1294 } else if (GlobalValue *GV = dyn_cast<GlobalValue>(CPV)) {
1295 writeOperand(GV, Static);
1300 cerr << "Unknown constant type: " << *CPV << "\n";
1305 // Some constant expressions need to be casted back to the original types
1306 // because their operands were casted to the expected type. This function takes
1307 // care of detecting that case and printing the cast for the ConstantExpr.
1308 bool CWriter::printConstExprCast(const ConstantExpr* CE, bool Static) {
1309 bool NeedsExplicitCast = false;
1310 const Type *Ty = CE->getOperand(0)->getType();
1311 bool TypeIsSigned = false;
1312 switch (CE->getOpcode()) {
1313 case Instruction::Add:
1314 case Instruction::Sub:
1315 case Instruction::Mul:
1316 // We need to cast integer arithmetic so that it is always performed
1317 // as unsigned, to avoid undefined behavior on overflow.
1318 if (!Ty->isIntOrIntVector()) break;
1320 case Instruction::LShr:
1321 case Instruction::URem:
1322 case Instruction::UDiv: NeedsExplicitCast = true; break;
1323 case Instruction::AShr:
1324 case Instruction::SRem:
1325 case Instruction::SDiv: NeedsExplicitCast = true; TypeIsSigned = true; break;
1326 case Instruction::SExt:
1328 NeedsExplicitCast = true;
1329 TypeIsSigned = true;
1331 case Instruction::ZExt:
1332 case Instruction::Trunc:
1333 case Instruction::FPTrunc:
1334 case Instruction::FPExt:
1335 case Instruction::UIToFP:
1336 case Instruction::SIToFP:
1337 case Instruction::FPToUI:
1338 case Instruction::FPToSI:
1339 case Instruction::PtrToInt:
1340 case Instruction::IntToPtr:
1341 case Instruction::BitCast:
1343 NeedsExplicitCast = true;
1347 if (NeedsExplicitCast) {
1349 if (Ty->isInteger() && Ty != Type::Int1Ty)
1350 printSimpleType(Out, Ty, TypeIsSigned);
1352 printType(Out, Ty); // not integer, sign doesn't matter
1355 return NeedsExplicitCast;
1358 // Print a constant assuming that it is the operand for a given Opcode. The
1359 // opcodes that care about sign need to cast their operands to the expected
1360 // type before the operation proceeds. This function does the casting.
1361 void CWriter::printConstantWithCast(Constant* CPV, unsigned Opcode) {
1363 // Extract the operand's type, we'll need it.
1364 const Type* OpTy = CPV->getType();
1366 // Indicate whether to do the cast or not.
1367 bool shouldCast = false;
1368 bool typeIsSigned = false;
1370 // Based on the Opcode for which this Constant is being written, determine
1371 // the new type to which the operand should be casted by setting the value
1372 // of OpTy. If we change OpTy, also set shouldCast to true so it gets
1376 // for most instructions, it doesn't matter
1378 case Instruction::Add:
1379 case Instruction::Sub:
1380 case Instruction::Mul:
1381 // We need to cast integer arithmetic so that it is always performed
1382 // as unsigned, to avoid undefined behavior on overflow.
1383 if (!OpTy->isIntOrIntVector()) break;
1385 case Instruction::LShr:
1386 case Instruction::UDiv:
1387 case Instruction::URem:
1390 case Instruction::AShr:
1391 case Instruction::SDiv:
1392 case Instruction::SRem:
1394 typeIsSigned = true;
1398 // Write out the casted constant if we should, otherwise just write the
1402 printSimpleType(Out, OpTy, typeIsSigned);
1404 printConstant(CPV, false);
1407 printConstant(CPV, false);
1410 std::string CWriter::GetValueName(const Value *Operand) {
1413 if (!isa<GlobalValue>(Operand) && Operand->getName() != "") {
1414 std::string VarName;
1416 Name = Operand->getName();
1417 VarName.reserve(Name.capacity());
1419 for (std::string::iterator I = Name.begin(), E = Name.end();
1423 if (!((ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z') ||
1424 (ch >= '0' && ch <= '9') || ch == '_')) {
1426 sprintf(buffer, "_%x_", ch);
1432 Name = "llvm_cbe_" + VarName;
1434 Name = Mang->getValueName(Operand);
1440 /// writeInstComputationInline - Emit the computation for the specified
1441 /// instruction inline, with no destination provided.
1442 void CWriter::writeInstComputationInline(Instruction &I) {
1443 // If this is a non-trivial bool computation, make sure to truncate down to
1444 // a 1 bit value. This is important because we want "add i1 x, y" to return
1445 // "0" when x and y are true, not "2" for example.
1446 bool NeedBoolTrunc = false;
1447 if (I.getType() == Type::Int1Ty && !isa<ICmpInst>(I) && !isa<FCmpInst>(I))
1448 NeedBoolTrunc = true;
1460 void CWriter::writeOperandInternal(Value *Operand, bool Static) {
1461 if (Instruction *I = dyn_cast<Instruction>(Operand))
1462 // Should we inline this instruction to build a tree?
1463 if (isInlinableInst(*I) && !isDirectAlloca(I)) {
1465 writeInstComputationInline(*I);
1470 Constant* CPV = dyn_cast<Constant>(Operand);
1472 if (CPV && !isa<GlobalValue>(CPV))
1473 printConstant(CPV, Static);
1475 Out << GetValueName(Operand);
1478 void CWriter::writeOperand(Value *Operand, bool Static) {
1479 bool isAddressImplicit = isAddressExposed(Operand);
1480 if (isAddressImplicit)
1481 Out << "(&"; // Global variables are referenced as their addresses by llvm
1483 writeOperandInternal(Operand, Static);
1485 if (isAddressImplicit)
1489 // Some instructions need to have their result value casted back to the
1490 // original types because their operands were casted to the expected type.
1491 // This function takes care of detecting that case and printing the cast
1492 // for the Instruction.
1493 bool CWriter::writeInstructionCast(const Instruction &I) {
1494 const Type *Ty = I.getOperand(0)->getType();
1495 switch (I.getOpcode()) {
1496 case Instruction::Add:
1497 case Instruction::Sub:
1498 case Instruction::Mul:
1499 // We need to cast integer arithmetic so that it is always performed
1500 // as unsigned, to avoid undefined behavior on overflow.
1501 if (!Ty->isIntOrIntVector()) break;
1503 case Instruction::LShr:
1504 case Instruction::URem:
1505 case Instruction::UDiv:
1507 printSimpleType(Out, Ty, false);
1510 case Instruction::AShr:
1511 case Instruction::SRem:
1512 case Instruction::SDiv:
1514 printSimpleType(Out, Ty, true);
1522 // Write the operand with a cast to another type based on the Opcode being used.
1523 // This will be used in cases where an instruction has specific type
1524 // requirements (usually signedness) for its operands.
1525 void CWriter::writeOperandWithCast(Value* Operand, unsigned Opcode) {
1527 // Extract the operand's type, we'll need it.
1528 const Type* OpTy = Operand->getType();
1530 // Indicate whether to do the cast or not.
1531 bool shouldCast = false;
1533 // Indicate whether the cast should be to a signed type or not.
1534 bool castIsSigned = false;
1536 // Based on the Opcode for which this Operand is being written, determine
1537 // the new type to which the operand should be casted by setting the value
1538 // of OpTy. If we change OpTy, also set shouldCast to true.
1541 // for most instructions, it doesn't matter
1543 case Instruction::Add:
1544 case Instruction::Sub:
1545 case Instruction::Mul:
1546 // We need to cast integer arithmetic so that it is always performed
1547 // as unsigned, to avoid undefined behavior on overflow.
1548 if (!OpTy->isIntOrIntVector()) break;
1550 case Instruction::LShr:
1551 case Instruction::UDiv:
1552 case Instruction::URem: // Cast to unsigned first
1554 castIsSigned = false;
1556 case Instruction::GetElementPtr:
1557 case Instruction::AShr:
1558 case Instruction::SDiv:
1559 case Instruction::SRem: // Cast to signed first
1561 castIsSigned = true;
1565 // Write out the casted operand if we should, otherwise just write the
1569 printSimpleType(Out, OpTy, castIsSigned);
1571 writeOperand(Operand);
1574 writeOperand(Operand);
1577 // Write the operand with a cast to another type based on the icmp predicate
1579 void CWriter::writeOperandWithCast(Value* Operand, const ICmpInst &Cmp) {
1580 // This has to do a cast to ensure the operand has the right signedness.
1581 // Also, if the operand is a pointer, we make sure to cast to an integer when
1582 // doing the comparison both for signedness and so that the C compiler doesn't
1583 // optimize things like "p < NULL" to false (p may contain an integer value
1585 bool shouldCast = Cmp.isRelational();
1587 // Write out the casted operand if we should, otherwise just write the
1590 writeOperand(Operand);
1594 // Should this be a signed comparison? If so, convert to signed.
1595 bool castIsSigned = Cmp.isSignedPredicate();
1597 // If the operand was a pointer, convert to a large integer type.
1598 const Type* OpTy = Operand->getType();
1599 if (isa<PointerType>(OpTy))
1600 OpTy = TD->getIntPtrType();
1603 printSimpleType(Out, OpTy, castIsSigned);
1605 writeOperand(Operand);
1609 // generateCompilerSpecificCode - This is where we add conditional compilation
1610 // directives to cater to specific compilers as need be.
1612 static void generateCompilerSpecificCode(raw_ostream& Out,
1613 const TargetData *TD) {
1614 // Alloca is hard to get, and we don't want to include stdlib.h here.
1615 Out << "/* get a declaration for alloca */\n"
1616 << "#if defined(__CYGWIN__) || defined(__MINGW32__)\n"
1617 << "#define alloca(x) __builtin_alloca((x))\n"
1618 << "#define _alloca(x) __builtin_alloca((x))\n"
1619 << "#elif defined(__APPLE__)\n"
1620 << "extern void *__builtin_alloca(unsigned long);\n"
1621 << "#define alloca(x) __builtin_alloca(x)\n"
1622 << "#define longjmp _longjmp\n"
1623 << "#define setjmp _setjmp\n"
1624 << "#elif defined(__sun__)\n"
1625 << "#if defined(__sparcv9)\n"
1626 << "extern void *__builtin_alloca(unsigned long);\n"
1628 << "extern void *__builtin_alloca(unsigned int);\n"
1630 << "#define alloca(x) __builtin_alloca(x)\n"
1631 << "#elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)\n"
1632 << "#define alloca(x) __builtin_alloca(x)\n"
1633 << "#elif defined(_MSC_VER)\n"
1634 << "#define inline _inline\n"
1635 << "#define alloca(x) _alloca(x)\n"
1637 << "#include <alloca.h>\n"
1640 // We output GCC specific attributes to preserve 'linkonce'ness on globals.
1641 // If we aren't being compiled with GCC, just drop these attributes.
1642 Out << "#ifndef __GNUC__ /* Can only support \"linkonce\" vars with GCC */\n"
1643 << "#define __attribute__(X)\n"
1646 // On Mac OS X, "external weak" is spelled "__attribute__((weak_import))".
1647 Out << "#if defined(__GNUC__) && defined(__APPLE_CC__)\n"
1648 << "#define __EXTERNAL_WEAK__ __attribute__((weak_import))\n"
1649 << "#elif defined(__GNUC__)\n"
1650 << "#define __EXTERNAL_WEAK__ __attribute__((weak))\n"
1652 << "#define __EXTERNAL_WEAK__\n"
1655 // For now, turn off the weak linkage attribute on Mac OS X. (See above.)
1656 Out << "#if defined(__GNUC__) && defined(__APPLE_CC__)\n"
1657 << "#define __ATTRIBUTE_WEAK__\n"
1658 << "#elif defined(__GNUC__)\n"
1659 << "#define __ATTRIBUTE_WEAK__ __attribute__((weak))\n"
1661 << "#define __ATTRIBUTE_WEAK__\n"
1664 // Add hidden visibility support. FIXME: APPLE_CC?
1665 Out << "#if defined(__GNUC__)\n"
1666 << "#define __HIDDEN__ __attribute__((visibility(\"hidden\")))\n"
1669 // Define NaN and Inf as GCC builtins if using GCC, as 0 otherwise
1670 // From the GCC documentation:
1672 // double __builtin_nan (const char *str)
1674 // This is an implementation of the ISO C99 function nan.
1676 // Since ISO C99 defines this function in terms of strtod, which we do
1677 // not implement, a description of the parsing is in order. The string is
1678 // parsed as by strtol; that is, the base is recognized by leading 0 or
1679 // 0x prefixes. The number parsed is placed in the significand such that
1680 // the least significant bit of the number is at the least significant
1681 // bit of the significand. The number is truncated to fit the significand
1682 // field provided. The significand is forced to be a quiet NaN.
1684 // This function, if given a string literal, is evaluated early enough
1685 // that it is considered a compile-time constant.
1687 // float __builtin_nanf (const char *str)
1689 // Similar to __builtin_nan, except the return type is float.
1691 // double __builtin_inf (void)
1693 // Similar to __builtin_huge_val, except a warning is generated if the
1694 // target floating-point format does not support infinities. This
1695 // function is suitable for implementing the ISO C99 macro INFINITY.
1697 // float __builtin_inff (void)
1699 // Similar to __builtin_inf, except the return type is float.
1700 Out << "#ifdef __GNUC__\n"
1701 << "#define LLVM_NAN(NanStr) __builtin_nan(NanStr) /* Double */\n"
1702 << "#define LLVM_NANF(NanStr) __builtin_nanf(NanStr) /* Float */\n"
1703 << "#define LLVM_NANS(NanStr) __builtin_nans(NanStr) /* Double */\n"
1704 << "#define LLVM_NANSF(NanStr) __builtin_nansf(NanStr) /* Float */\n"
1705 << "#define LLVM_INF __builtin_inf() /* Double */\n"
1706 << "#define LLVM_INFF __builtin_inff() /* Float */\n"
1707 << "#define LLVM_PREFETCH(addr,rw,locality) "
1708 "__builtin_prefetch(addr,rw,locality)\n"
1709 << "#define __ATTRIBUTE_CTOR__ __attribute__((constructor))\n"
1710 << "#define __ATTRIBUTE_DTOR__ __attribute__((destructor))\n"
1711 << "#define LLVM_ASM __asm__\n"
1713 << "#define LLVM_NAN(NanStr) ((double)0.0) /* Double */\n"
1714 << "#define LLVM_NANF(NanStr) 0.0F /* Float */\n"
1715 << "#define LLVM_NANS(NanStr) ((double)0.0) /* Double */\n"
1716 << "#define LLVM_NANSF(NanStr) 0.0F /* Float */\n"
1717 << "#define LLVM_INF ((double)0.0) /* Double */\n"
1718 << "#define LLVM_INFF 0.0F /* Float */\n"
1719 << "#define LLVM_PREFETCH(addr,rw,locality) /* PREFETCH */\n"
1720 << "#define __ATTRIBUTE_CTOR__\n"
1721 << "#define __ATTRIBUTE_DTOR__\n"
1722 << "#define LLVM_ASM(X)\n"
1725 Out << "#if __GNUC__ < 4 /* Old GCC's, or compilers not GCC */ \n"
1726 << "#define __builtin_stack_save() 0 /* not implemented */\n"
1727 << "#define __builtin_stack_restore(X) /* noop */\n"
1730 // Output typedefs for 128-bit integers. If these are needed with a
1731 // 32-bit target or with a C compiler that doesn't support mode(TI),
1732 // more drastic measures will be needed.
1733 Out << "#if __GNUC__ && __LP64__ /* 128-bit integer types */\n"
1734 << "typedef int __attribute__((mode(TI))) llvmInt128;\n"
1735 << "typedef unsigned __attribute__((mode(TI))) llvmUInt128;\n"
1738 // Output target-specific code that should be inserted into main.
1739 Out << "#define CODE_FOR_MAIN() /* Any target-specific code for main()*/\n";
1742 /// FindStaticTors - Given a static ctor/dtor list, unpack its contents into
1743 /// the StaticTors set.
1744 static void FindStaticTors(GlobalVariable *GV, std::set<Function*> &StaticTors){
1745 ConstantArray *InitList = dyn_cast<ConstantArray>(GV->getInitializer());
1746 if (!InitList) return;
1748 for (unsigned i = 0, e = InitList->getNumOperands(); i != e; ++i)
1749 if (ConstantStruct *CS = dyn_cast<ConstantStruct>(InitList->getOperand(i))){
1750 if (CS->getNumOperands() != 2) return; // Not array of 2-element structs.
1752 if (CS->getOperand(1)->isNullValue())
1753 return; // Found a null terminator, exit printing.
1754 Constant *FP = CS->getOperand(1);
1755 if (ConstantExpr *CE = dyn_cast<ConstantExpr>(FP))
1757 FP = CE->getOperand(0);
1758 if (Function *F = dyn_cast<Function>(FP))
1759 StaticTors.insert(F);
1763 enum SpecialGlobalClass {
1765 GlobalCtors, GlobalDtors,
1769 /// getGlobalVariableClass - If this is a global that is specially recognized
1770 /// by LLVM, return a code that indicates how we should handle it.
1771 static SpecialGlobalClass getGlobalVariableClass(const GlobalVariable *GV) {
1772 // If this is a global ctors/dtors list, handle it now.
1773 if (GV->hasAppendingLinkage() && GV->use_empty()) {
1774 if (GV->getName() == "llvm.global_ctors")
1776 else if (GV->getName() == "llvm.global_dtors")
1780 // Otherwise, it it is other metadata, don't print it. This catches things
1781 // like debug information.
1782 if (GV->getSection() == "llvm.metadata")
1789 bool CWriter::doInitialization(Module &M) {
1793 TD = new TargetData(&M);
1794 IL = new IntrinsicLowering(*TD);
1795 IL->AddPrototypes(M);
1797 // Ensure that all structure types have names...
1798 Mang = new Mangler(M);
1799 Mang->markCharUnacceptable('.');
1801 // Keep track of which functions are static ctors/dtors so they can have
1802 // an attribute added to their prototypes.
1803 std::set<Function*> StaticCtors, StaticDtors;
1804 for (Module::global_iterator I = M.global_begin(), E = M.global_end();
1806 switch (getGlobalVariableClass(I)) {
1809 FindStaticTors(I, StaticCtors);
1812 FindStaticTors(I, StaticDtors);
1817 // get declaration for alloca
1818 Out << "/* Provide Declarations */\n";
1819 Out << "#include <stdarg.h>\n"; // Varargs support
1820 Out << "#include <setjmp.h>\n"; // Unwind support
1821 generateCompilerSpecificCode(Out, TD);
1823 // Provide a definition for `bool' if not compiling with a C++ compiler.
1825 << "#ifndef __cplusplus\ntypedef unsigned char bool;\n#endif\n"
1827 << "\n\n/* Support for floating point constants */\n"
1828 << "typedef unsigned long long ConstantDoubleTy;\n"
1829 << "typedef unsigned int ConstantFloatTy;\n"
1830 << "typedef struct { unsigned long long f1; unsigned short f2; "
1831 "unsigned short pad[3]; } ConstantFP80Ty;\n"
1832 // This is used for both kinds of 128-bit long double; meaning differs.
1833 << "typedef struct { unsigned long long f1; unsigned long long f2; }"
1834 " ConstantFP128Ty;\n"
1835 << "\n\n/* Global Declarations */\n";
1837 // First output all the declarations for the program, because C requires
1838 // Functions & globals to be declared before they are used.
1841 // Loop over the symbol table, emitting all named constants...
1842 printModuleTypes(M.getTypeSymbolTable());
1844 // Global variable declarations...
1845 if (!M.global_empty()) {
1846 Out << "\n/* External Global Variable Declarations */\n";
1847 for (Module::global_iterator I = M.global_begin(), E = M.global_end();
1850 if (I->hasExternalLinkage() || I->hasExternalWeakLinkage() ||
1851 I->hasCommonLinkage())
1853 else if (I->hasDLLImportLinkage())
1854 Out << "__declspec(dllimport) ";
1856 continue; // Internal Global
1858 // Thread Local Storage
1859 if (I->isThreadLocal())
1862 printType(Out, I->getType()->getElementType(), false, GetValueName(I));
1864 if (I->hasExternalWeakLinkage())
1865 Out << " __EXTERNAL_WEAK__";
1870 // Function declarations
1871 Out << "\n/* Function Declarations */\n";
1872 Out << "double fmod(double, double);\n"; // Support for FP rem
1873 Out << "float fmodf(float, float);\n";
1874 Out << "long double fmodl(long double, long double);\n";
1876 for (Module::iterator I = M.begin(), E = M.end(); I != E; ++I) {
1877 // Don't print declarations for intrinsic functions.
1878 if (!I->isIntrinsic() && I->getName() != "setjmp" &&
1879 I->getName() != "longjmp" && I->getName() != "_setjmp") {
1880 if (I->hasExternalWeakLinkage())
1882 printFunctionSignature(I, true);
1883 if (I->hasWeakLinkage() || I->hasLinkOnceLinkage())
1884 Out << " __ATTRIBUTE_WEAK__";
1885 if (I->hasExternalWeakLinkage())
1886 Out << " __EXTERNAL_WEAK__";
1887 if (StaticCtors.count(I))
1888 Out << " __ATTRIBUTE_CTOR__";
1889 if (StaticDtors.count(I))
1890 Out << " __ATTRIBUTE_DTOR__";
1891 if (I->hasHiddenVisibility())
1892 Out << " __HIDDEN__";
1894 if (I->hasName() && I->getName()[0] == 1)
1895 Out << " LLVM_ASM(\"" << I->getName().c_str()+1 << "\")";
1901 // Output the global variable declarations
1902 if (!M.global_empty()) {
1903 Out << "\n\n/* Global Variable Declarations */\n";
1904 for (Module::global_iterator I = M.global_begin(), E = M.global_end();
1906 if (!I->isDeclaration()) {
1907 // Ignore special globals, such as debug info.
1908 if (getGlobalVariableClass(I))
1911 if (I->hasInternalLinkage())
1916 // Thread Local Storage
1917 if (I->isThreadLocal())
1920 printType(Out, I->getType()->getElementType(), false,
1923 if (I->hasLinkOnceLinkage())
1924 Out << " __attribute__((common))";
1925 else if (I->hasCommonLinkage()) // FIXME is this right?
1926 Out << " __ATTRIBUTE_WEAK__";
1927 else if (I->hasWeakLinkage())
1928 Out << " __ATTRIBUTE_WEAK__";
1929 else if (I->hasExternalWeakLinkage())
1930 Out << " __EXTERNAL_WEAK__";
1931 if (I->hasHiddenVisibility())
1932 Out << " __HIDDEN__";
1937 // Output the global variable definitions and contents...
1938 if (!M.global_empty()) {
1939 Out << "\n\n/* Global Variable Definitions and Initialization */\n";
1940 for (Module::global_iterator I = M.global_begin(), E = M.global_end();
1942 if (!I->isDeclaration()) {
1943 // Ignore special globals, such as debug info.
1944 if (getGlobalVariableClass(I))
1947 if (I->hasInternalLinkage())
1949 else if (I->hasDLLImportLinkage())
1950 Out << "__declspec(dllimport) ";
1951 else if (I->hasDLLExportLinkage())
1952 Out << "__declspec(dllexport) ";
1954 // Thread Local Storage
1955 if (I->isThreadLocal())
1958 printType(Out, I->getType()->getElementType(), false,
1960 if (I->hasLinkOnceLinkage())
1961 Out << " __attribute__((common))";
1962 else if (I->hasWeakLinkage())
1963 Out << " __ATTRIBUTE_WEAK__";
1964 else if (I->hasCommonLinkage())
1965 Out << " __ATTRIBUTE_WEAK__";
1967 if (I->hasHiddenVisibility())
1968 Out << " __HIDDEN__";
1970 // If the initializer is not null, emit the initializer. If it is null,
1971 // we try to avoid emitting large amounts of zeros. The problem with
1972 // this, however, occurs when the variable has weak linkage. In this
1973 // case, the assembler will complain about the variable being both weak
1974 // and common, so we disable this optimization.
1975 // FIXME common linkage should avoid this problem.
1976 if (!I->getInitializer()->isNullValue()) {
1978 writeOperand(I->getInitializer(), true);
1979 } else if (I->hasWeakLinkage()) {
1980 // We have to specify an initializer, but it doesn't have to be
1981 // complete. If the value is an aggregate, print out { 0 }, and let
1982 // the compiler figure out the rest of the zeros.
1984 if (isa<StructType>(I->getInitializer()->getType()) ||
1985 isa<VectorType>(I->getInitializer()->getType())) {
1987 } else if (isa<ArrayType>(I->getInitializer()->getType())) {
1988 // As with structs and vectors, but with an extra set of braces
1989 // because arrays are wrapped in structs.
1992 // Just print it out normally.
1993 writeOperand(I->getInitializer(), true);
2001 Out << "\n\n/* Function Bodies */\n";
2003 // Emit some helper functions for dealing with FCMP instruction's
2005 Out << "static inline int llvm_fcmp_ord(double X, double Y) { ";
2006 Out << "return X == X && Y == Y; }\n";
2007 Out << "static inline int llvm_fcmp_uno(double X, double Y) { ";
2008 Out << "return X != X || Y != Y; }\n";
2009 Out << "static inline int llvm_fcmp_ueq(double X, double Y) { ";
2010 Out << "return X == Y || llvm_fcmp_uno(X, Y); }\n";
2011 Out << "static inline int llvm_fcmp_une(double X, double Y) { ";
2012 Out << "return X != Y; }\n";
2013 Out << "static inline int llvm_fcmp_ult(double X, double Y) { ";
2014 Out << "return X < Y || llvm_fcmp_uno(X, Y); }\n";
2015 Out << "static inline int llvm_fcmp_ugt(double X, double Y) { ";
2016 Out << "return X > Y || llvm_fcmp_uno(X, Y); }\n";
2017 Out << "static inline int llvm_fcmp_ule(double X, double Y) { ";
2018 Out << "return X <= Y || llvm_fcmp_uno(X, Y); }\n";
2019 Out << "static inline int llvm_fcmp_uge(double X, double Y) { ";
2020 Out << "return X >= Y || llvm_fcmp_uno(X, Y); }\n";
2021 Out << "static inline int llvm_fcmp_oeq(double X, double Y) { ";
2022 Out << "return X == Y ; }\n";
2023 Out << "static inline int llvm_fcmp_one(double X, double Y) { ";
2024 Out << "return X != Y && llvm_fcmp_ord(X, Y); }\n";
2025 Out << "static inline int llvm_fcmp_olt(double X, double Y) { ";
2026 Out << "return X < Y ; }\n";
2027 Out << "static inline int llvm_fcmp_ogt(double X, double Y) { ";
2028 Out << "return X > Y ; }\n";
2029 Out << "static inline int llvm_fcmp_ole(double X, double Y) { ";
2030 Out << "return X <= Y ; }\n";
2031 Out << "static inline int llvm_fcmp_oge(double X, double Y) { ";
2032 Out << "return X >= Y ; }\n";
2037 /// Output all floating point constants that cannot be printed accurately...
2038 void CWriter::printFloatingPointConstants(Function &F) {
2039 // Scan the module for floating point constants. If any FP constant is used
2040 // in the function, we want to redirect it here so that we do not depend on
2041 // the precision of the printed form, unless the printed form preserves
2044 for (constant_iterator I = constant_begin(&F), E = constant_end(&F);
2046 printFloatingPointConstants(*I);
2051 void CWriter::printFloatingPointConstants(const Constant *C) {
2052 // If this is a constant expression, recursively check for constant fp values.
2053 if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(C)) {
2054 for (unsigned i = 0, e = CE->getNumOperands(); i != e; ++i)
2055 printFloatingPointConstants(CE->getOperand(i));
2059 // Otherwise, check for a FP constant that we need to print.
2060 const ConstantFP *FPC = dyn_cast<ConstantFP>(C);
2062 // Do not put in FPConstantMap if safe.
2063 isFPCSafeToPrint(FPC) ||
2064 // Already printed this constant?
2065 FPConstantMap.count(FPC))
2068 FPConstantMap[FPC] = FPCounter; // Number the FP constants
2070 if (FPC->getType() == Type::DoubleTy) {
2071 double Val = FPC->getValueAPF().convertToDouble();
2072 uint64_t i = FPC->getValueAPF().bitcastToAPInt().getZExtValue();
2073 Out << "static const ConstantDoubleTy FPConstant" << FPCounter++
2074 << " = 0x" << utohexstr(i)
2075 << "ULL; /* " << Val << " */\n";
2076 } else if (FPC->getType() == Type::FloatTy) {
2077 float Val = FPC->getValueAPF().convertToFloat();
2078 uint32_t i = (uint32_t)FPC->getValueAPF().bitcastToAPInt().
2080 Out << "static const ConstantFloatTy FPConstant" << FPCounter++
2081 << " = 0x" << utohexstr(i)
2082 << "U; /* " << Val << " */\n";
2083 } else if (FPC->getType() == Type::X86_FP80Ty) {
2084 // api needed to prevent premature destruction
2085 APInt api = FPC->getValueAPF().bitcastToAPInt();
2086 const uint64_t *p = api.getRawData();
2087 Out << "static const ConstantFP80Ty FPConstant" << FPCounter++
2089 << utohexstr((uint16_t)p[1] | (p[0] & 0xffffffffffffLL)<<16)
2090 << "ULL, 0x" << utohexstr((uint16_t)(p[0] >> 48)) << ",{0,0,0}"
2091 << "}; /* Long double constant */\n";
2092 } else if (FPC->getType() == Type::PPC_FP128Ty) {
2093 APInt api = FPC->getValueAPF().bitcastToAPInt();
2094 const uint64_t *p = api.getRawData();
2095 Out << "static const ConstantFP128Ty FPConstant" << FPCounter++
2097 << utohexstr(p[0]) << ", 0x" << utohexstr(p[1])
2098 << "}; /* Long double constant */\n";
2101 assert(0 && "Unknown float type!");
2107 /// printSymbolTable - Run through symbol table looking for type names. If a
2108 /// type name is found, emit its declaration...
2110 void CWriter::printModuleTypes(const TypeSymbolTable &TST) {
2111 Out << "/* Helper union for bitcasts */\n";
2112 Out << "typedef union {\n";
2113 Out << " unsigned int Int32;\n";
2114 Out << " unsigned long long Int64;\n";
2115 Out << " float Float;\n";
2116 Out << " double Double;\n";
2117 Out << "} llvmBitCastUnion;\n";
2119 // We are only interested in the type plane of the symbol table.
2120 TypeSymbolTable::const_iterator I = TST.begin();
2121 TypeSymbolTable::const_iterator End = TST.end();
2123 // If there are no type names, exit early.
2124 if (I == End) return;
2126 // Print out forward declarations for structure types before anything else!
2127 Out << "/* Structure forward decls */\n";
2128 for (; I != End; ++I) {
2129 std::string Name = "struct l_" + Mang->makeNameProper(I->first);
2130 Out << Name << ";\n";
2131 TypeNames.insert(std::make_pair(I->second, Name));
2136 // Now we can print out typedefs. Above, we guaranteed that this can only be
2137 // for struct or opaque types.
2138 Out << "/* Typedefs */\n";
2139 for (I = TST.begin(); I != End; ++I) {
2140 std::string Name = "l_" + Mang->makeNameProper(I->first);
2142 printType(Out, I->second, false, Name);
2148 // Keep track of which structures have been printed so far...
2149 std::set<const Type *> StructPrinted;
2151 // Loop over all structures then push them into the stack so they are
2152 // printed in the correct order.
2154 Out << "/* Structure contents */\n";
2155 for (I = TST.begin(); I != End; ++I)
2156 if (isa<StructType>(I->second) || isa<ArrayType>(I->second))
2157 // Only print out used types!
2158 printContainedStructs(I->second, StructPrinted);
2161 // Push the struct onto the stack and recursively push all structs
2162 // this one depends on.
2164 // TODO: Make this work properly with vector types
2166 void CWriter::printContainedStructs(const Type *Ty,
2167 std::set<const Type*> &StructPrinted) {
2168 // Don't walk through pointers.
2169 if (isa<PointerType>(Ty) || Ty->isPrimitiveType() || Ty->isInteger()) return;
2171 // Print all contained types first.
2172 for (Type::subtype_iterator I = Ty->subtype_begin(),
2173 E = Ty->subtype_end(); I != E; ++I)
2174 printContainedStructs(*I, StructPrinted);
2176 if (isa<StructType>(Ty) || isa<ArrayType>(Ty)) {
2177 // Check to see if we have already printed this struct.
2178 if (StructPrinted.insert(Ty).second) {
2179 // Print structure type out.
2180 std::string Name = TypeNames[Ty];
2181 printType(Out, Ty, false, Name, true);
2187 void CWriter::printFunctionSignature(const Function *F, bool Prototype) {
2188 /// isStructReturn - Should this function actually return a struct by-value?
2189 bool isStructReturn = F->hasStructRetAttr();
2191 if (F->hasInternalLinkage()) Out << "static ";
2192 if (F->hasDLLImportLinkage()) Out << "__declspec(dllimport) ";
2193 if (F->hasDLLExportLinkage()) Out << "__declspec(dllexport) ";
2194 switch (F->getCallingConv()) {
2195 case CallingConv::X86_StdCall:
2196 Out << "__attribute__((stdcall)) ";
2198 case CallingConv::X86_FastCall:
2199 Out << "__attribute__((fastcall)) ";
2203 // Loop over the arguments, printing them...
2204 const FunctionType *FT = cast<FunctionType>(F->getFunctionType());
2205 const AttrListPtr &PAL = F->getAttributes();
2207 std::stringstream FunctionInnards;
2209 // Print out the name...
2210 FunctionInnards << GetValueName(F) << '(';
2212 bool PrintedArg = false;
2213 if (!F->isDeclaration()) {
2214 if (!F->arg_empty()) {
2215 Function::const_arg_iterator I = F->arg_begin(), E = F->arg_end();
2218 // If this is a struct-return function, don't print the hidden
2219 // struct-return argument.
2220 if (isStructReturn) {
2221 assert(I != E && "Invalid struct return function!");
2226 std::string ArgName;
2227 for (; I != E; ++I) {
2228 if (PrintedArg) FunctionInnards << ", ";
2229 if (I->hasName() || !Prototype)
2230 ArgName = GetValueName(I);
2233 const Type *ArgTy = I->getType();
2234 if (PAL.paramHasAttr(Idx, Attribute::ByVal)) {
2235 ArgTy = cast<PointerType>(ArgTy)->getElementType();
2236 ByValParams.insert(I);
2238 printType(FunctionInnards, ArgTy,
2239 /*isSigned=*/PAL.paramHasAttr(Idx, Attribute::SExt),
2246 // Loop over the arguments, printing them.
2247 FunctionType::param_iterator I = FT->param_begin(), E = FT->param_end();
2250 // If this is a struct-return function, don't print the hidden
2251 // struct-return argument.
2252 if (isStructReturn) {
2253 assert(I != E && "Invalid struct return function!");
2258 for (; I != E; ++I) {
2259 if (PrintedArg) FunctionInnards << ", ";
2260 const Type *ArgTy = *I;
2261 if (PAL.paramHasAttr(Idx, Attribute::ByVal)) {
2262 assert(isa<PointerType>(ArgTy));
2263 ArgTy = cast<PointerType>(ArgTy)->getElementType();
2265 printType(FunctionInnards, ArgTy,
2266 /*isSigned=*/PAL.paramHasAttr(Idx, Attribute::SExt));
2272 // Finish printing arguments... if this is a vararg function, print the ...,
2273 // unless there are no known types, in which case, we just emit ().
2275 if (FT->isVarArg() && PrintedArg) {
2276 if (PrintedArg) FunctionInnards << ", ";
2277 FunctionInnards << "..."; // Output varargs portion of signature!
2278 } else if (!FT->isVarArg() && !PrintedArg) {
2279 FunctionInnards << "void"; // ret() -> ret(void) in C.
2281 FunctionInnards << ')';
2283 // Get the return tpe for the function.
2285 if (!isStructReturn)
2286 RetTy = F->getReturnType();
2288 // If this is a struct-return function, print the struct-return type.
2289 RetTy = cast<PointerType>(FT->getParamType(0))->getElementType();
2292 // Print out the return type and the signature built above.
2293 printType(Out, RetTy,
2294 /*isSigned=*/PAL.paramHasAttr(0, Attribute::SExt),
2295 FunctionInnards.str());
2298 static inline bool isFPIntBitCast(const Instruction &I) {
2299 if (!isa<BitCastInst>(I))
2301 const Type *SrcTy = I.getOperand(0)->getType();
2302 const Type *DstTy = I.getType();
2303 return (SrcTy->isFloatingPoint() && DstTy->isInteger()) ||
2304 (DstTy->isFloatingPoint() && SrcTy->isInteger());
2307 void CWriter::printFunction(Function &F) {
2308 /// isStructReturn - Should this function actually return a struct by-value?
2309 bool isStructReturn = F.hasStructRetAttr();
2311 printFunctionSignature(&F, false);
2314 // If this is a struct return function, handle the result with magic.
2315 if (isStructReturn) {
2316 const Type *StructTy =
2317 cast<PointerType>(F.arg_begin()->getType())->getElementType();
2319 printType(Out, StructTy, false, "StructReturn");
2320 Out << "; /* Struct return temporary */\n";
2323 printType(Out, F.arg_begin()->getType(), false,
2324 GetValueName(F.arg_begin()));
2325 Out << " = &StructReturn;\n";
2328 bool PrintedVar = false;
2330 // print local variable information for the function
2331 for (inst_iterator I = inst_begin(&F), E = inst_end(&F); I != E; ++I) {
2332 if (const AllocaInst *AI = isDirectAlloca(&*I)) {
2334 printType(Out, AI->getAllocatedType(), false, GetValueName(AI));
2335 Out << "; /* Address-exposed local */\n";
2337 } else if (I->getType() != Type::VoidTy && !isInlinableInst(*I)) {
2339 printType(Out, I->getType(), false, GetValueName(&*I));
2342 if (isa<PHINode>(*I)) { // Print out PHI node temporaries as well...
2344 printType(Out, I->getType(), false,
2345 GetValueName(&*I)+"__PHI_TEMPORARY");
2350 // We need a temporary for the BitCast to use so it can pluck a value out
2351 // of a union to do the BitCast. This is separate from the need for a
2352 // variable to hold the result of the BitCast.
2353 if (isFPIntBitCast(*I)) {
2354 Out << " llvmBitCastUnion " << GetValueName(&*I)
2355 << "__BITCAST_TEMPORARY;\n";
2363 if (F.hasExternalLinkage() && F.getName() == "main")
2364 Out << " CODE_FOR_MAIN();\n";
2366 // print the basic blocks
2367 for (Function::iterator BB = F.begin(), E = F.end(); BB != E; ++BB) {
2368 if (Loop *L = LI->getLoopFor(BB)) {
2369 if (L->getHeader() == BB && L->getParentLoop() == 0)
2372 printBasicBlock(BB);
2379 void CWriter::printLoop(Loop *L) {
2380 Out << " do { /* Syntactic loop '" << L->getHeader()->getName()
2381 << "' to make GCC happy */\n";
2382 for (unsigned i = 0, e = L->getBlocks().size(); i != e; ++i) {
2383 BasicBlock *BB = L->getBlocks()[i];
2384 Loop *BBLoop = LI->getLoopFor(BB);
2386 printBasicBlock(BB);
2387 else if (BB == BBLoop->getHeader() && BBLoop->getParentLoop() == L)
2390 Out << " } while (1); /* end of syntactic loop '"
2391 << L->getHeader()->getName() << "' */\n";
2394 void CWriter::printBasicBlock(BasicBlock *BB) {
2396 // Don't print the label for the basic block if there are no uses, or if
2397 // the only terminator use is the predecessor basic block's terminator.
2398 // We have to scan the use list because PHI nodes use basic blocks too but
2399 // do not require a label to be generated.
2401 bool NeedsLabel = false;
2402 for (pred_iterator PI = pred_begin(BB), E = pred_end(BB); PI != E; ++PI)
2403 if (isGotoCodeNecessary(*PI, BB)) {
2408 if (NeedsLabel) Out << GetValueName(BB) << ":\n";
2410 // Output all of the instructions in the basic block...
2411 for (BasicBlock::iterator II = BB->begin(), E = --BB->end(); II != E;
2413 if (!isInlinableInst(*II) && !isDirectAlloca(II)) {
2414 if (II->getType() != Type::VoidTy && !isInlineAsm(*II))
2418 writeInstComputationInline(*II);
2423 // Don't emit prefix or suffix for the terminator.
2424 visit(*BB->getTerminator());
2428 // Specific Instruction type classes... note that all of the casts are
2429 // necessary because we use the instruction classes as opaque types...
2431 void CWriter::visitReturnInst(ReturnInst &I) {
2432 // If this is a struct return function, return the temporary struct.
2433 bool isStructReturn = I.getParent()->getParent()->hasStructRetAttr();
2435 if (isStructReturn) {
2436 Out << " return StructReturn;\n";
2440 // Don't output a void return if this is the last basic block in the function
2441 if (I.getNumOperands() == 0 &&
2442 &*--I.getParent()->getParent()->end() == I.getParent() &&
2443 !I.getParent()->size() == 1) {
2447 if (I.getNumOperands() > 1) {
2450 printType(Out, I.getParent()->getParent()->getReturnType());
2451 Out << " llvm_cbe_mrv_temp = {\n";
2452 for (unsigned i = 0, e = I.getNumOperands(); i != e; ++i) {
2454 writeOperand(I.getOperand(i));
2460 Out << " return llvm_cbe_mrv_temp;\n";
2466 if (I.getNumOperands()) {
2468 writeOperand(I.getOperand(0));
2473 void CWriter::visitSwitchInst(SwitchInst &SI) {
2476 writeOperand(SI.getOperand(0));
2477 Out << ") {\n default:\n";
2478 printPHICopiesForSuccessor (SI.getParent(), SI.getDefaultDest(), 2);
2479 printBranchToBlock(SI.getParent(), SI.getDefaultDest(), 2);
2481 for (unsigned i = 2, e = SI.getNumOperands(); i != e; i += 2) {
2483 writeOperand(SI.getOperand(i));
2485 BasicBlock *Succ = cast<BasicBlock>(SI.getOperand(i+1));
2486 printPHICopiesForSuccessor (SI.getParent(), Succ, 2);
2487 printBranchToBlock(SI.getParent(), Succ, 2);
2488 if (Function::iterator(Succ) == next(Function::iterator(SI.getParent())))
2494 void CWriter::visitUnreachableInst(UnreachableInst &I) {
2495 Out << " /*UNREACHABLE*/;\n";
2498 bool CWriter::isGotoCodeNecessary(BasicBlock *From, BasicBlock *To) {
2499 /// FIXME: This should be reenabled, but loop reordering safe!!
2502 if (next(Function::iterator(From)) != Function::iterator(To))
2503 return true; // Not the direct successor, we need a goto.
2505 //isa<SwitchInst>(From->getTerminator())
2507 if (LI->getLoopFor(From) != LI->getLoopFor(To))
2512 void CWriter::printPHICopiesForSuccessor (BasicBlock *CurBlock,
2513 BasicBlock *Successor,
2515 for (BasicBlock::iterator I = Successor->begin(); isa<PHINode>(I); ++I) {
2516 PHINode *PN = cast<PHINode>(I);
2517 // Now we have to do the printing.
2518 Value *IV = PN->getIncomingValueForBlock(CurBlock);
2519 if (!isa<UndefValue>(IV)) {
2520 Out << std::string(Indent, ' ');
2521 Out << " " << GetValueName(I) << "__PHI_TEMPORARY = ";
2523 Out << "; /* for PHI node */\n";
2528 void CWriter::printBranchToBlock(BasicBlock *CurBB, BasicBlock *Succ,
2530 if (isGotoCodeNecessary(CurBB, Succ)) {
2531 Out << std::string(Indent, ' ') << " goto ";
2537 // Branch instruction printing - Avoid printing out a branch to a basic block
2538 // that immediately succeeds the current one.
2540 void CWriter::visitBranchInst(BranchInst &I) {
2542 if (I.isConditional()) {
2543 if (isGotoCodeNecessary(I.getParent(), I.getSuccessor(0))) {
2545 writeOperand(I.getCondition());
2548 printPHICopiesForSuccessor (I.getParent(), I.getSuccessor(0), 2);
2549 printBranchToBlock(I.getParent(), I.getSuccessor(0), 2);
2551 if (isGotoCodeNecessary(I.getParent(), I.getSuccessor(1))) {
2552 Out << " } else {\n";
2553 printPHICopiesForSuccessor (I.getParent(), I.getSuccessor(1), 2);
2554 printBranchToBlock(I.getParent(), I.getSuccessor(1), 2);
2557 // First goto not necessary, assume second one is...
2559 writeOperand(I.getCondition());
2562 printPHICopiesForSuccessor (I.getParent(), I.getSuccessor(1), 2);
2563 printBranchToBlock(I.getParent(), I.getSuccessor(1), 2);
2568 printPHICopiesForSuccessor (I.getParent(), I.getSuccessor(0), 0);
2569 printBranchToBlock(I.getParent(), I.getSuccessor(0), 0);
2574 // PHI nodes get copied into temporary values at the end of predecessor basic
2575 // blocks. We now need to copy these temporary values into the REAL value for
2577 void CWriter::visitPHINode(PHINode &I) {
2579 Out << "__PHI_TEMPORARY";
2583 void CWriter::visitBinaryOperator(Instruction &I) {
2584 // binary instructions, shift instructions, setCond instructions.
2585 assert(!isa<PointerType>(I.getType()));
2587 // We must cast the results of binary operations which might be promoted.
2588 bool needsCast = false;
2589 if ((I.getType() == Type::Int8Ty) || (I.getType() == Type::Int16Ty)
2590 || (I.getType() == Type::FloatTy)) {
2593 printType(Out, I.getType(), false);
2597 // If this is a negation operation, print it out as such. For FP, we don't
2598 // want to print "-0.0 - X".
2599 if (BinaryOperator::isNeg(&I)) {
2601 writeOperand(BinaryOperator::getNegArgument(cast<BinaryOperator>(&I)));
2603 } else if (I.getOpcode() == Instruction::FRem) {
2604 // Output a call to fmod/fmodf instead of emitting a%b
2605 if (I.getType() == Type::FloatTy)
2607 else if (I.getType() == Type::DoubleTy)
2609 else // all 3 flavors of long double
2611 writeOperand(I.getOperand(0));
2613 writeOperand(I.getOperand(1));
2617 // Write out the cast of the instruction's value back to the proper type
2619 bool NeedsClosingParens = writeInstructionCast(I);
2621 // Certain instructions require the operand to be forced to a specific type
2622 // so we use writeOperandWithCast here instead of writeOperand. Similarly
2623 // below for operand 1
2624 writeOperandWithCast(I.getOperand(0), I.getOpcode());
2626 switch (I.getOpcode()) {
2627 case Instruction::Add: Out << " + "; break;
2628 case Instruction::Sub: Out << " - "; break;
2629 case Instruction::Mul: Out << " * "; break;
2630 case Instruction::URem:
2631 case Instruction::SRem:
2632 case Instruction::FRem: Out << " % "; break;
2633 case Instruction::UDiv:
2634 case Instruction::SDiv:
2635 case Instruction::FDiv: Out << " / "; break;
2636 case Instruction::And: Out << " & "; break;
2637 case Instruction::Or: Out << " | "; break;
2638 case Instruction::Xor: Out << " ^ "; break;
2639 case Instruction::Shl : Out << " << "; break;
2640 case Instruction::LShr:
2641 case Instruction::AShr: Out << " >> "; break;
2642 default: cerr << "Invalid operator type!" << I; abort();
2645 writeOperandWithCast(I.getOperand(1), I.getOpcode());
2646 if (NeedsClosingParens)
2655 void CWriter::visitICmpInst(ICmpInst &I) {
2656 // We must cast the results of icmp which might be promoted.
2657 bool needsCast = false;
2659 // Write out the cast of the instruction's value back to the proper type
2661 bool NeedsClosingParens = writeInstructionCast(I);
2663 // Certain icmp predicate require the operand to be forced to a specific type
2664 // so we use writeOperandWithCast here instead of writeOperand. Similarly
2665 // below for operand 1
2666 writeOperandWithCast(I.getOperand(0), I);
2668 switch (I.getPredicate()) {
2669 case ICmpInst::ICMP_EQ: Out << " == "; break;
2670 case ICmpInst::ICMP_NE: Out << " != "; break;
2671 case ICmpInst::ICMP_ULE:
2672 case ICmpInst::ICMP_SLE: Out << " <= "; break;
2673 case ICmpInst::ICMP_UGE:
2674 case ICmpInst::ICMP_SGE: Out << " >= "; break;
2675 case ICmpInst::ICMP_ULT:
2676 case ICmpInst::ICMP_SLT: Out << " < "; break;
2677 case ICmpInst::ICMP_UGT:
2678 case ICmpInst::ICMP_SGT: Out << " > "; break;
2679 default: cerr << "Invalid icmp predicate!" << I; abort();
2682 writeOperandWithCast(I.getOperand(1), I);
2683 if (NeedsClosingParens)
2691 void CWriter::visitFCmpInst(FCmpInst &I) {
2692 if (I.getPredicate() == FCmpInst::FCMP_FALSE) {
2696 if (I.getPredicate() == FCmpInst::FCMP_TRUE) {
2702 switch (I.getPredicate()) {
2703 default: assert(0 && "Illegal FCmp predicate");
2704 case FCmpInst::FCMP_ORD: op = "ord"; break;
2705 case FCmpInst::FCMP_UNO: op = "uno"; break;
2706 case FCmpInst::FCMP_UEQ: op = "ueq"; break;
2707 case FCmpInst::FCMP_UNE: op = "une"; break;
2708 case FCmpInst::FCMP_ULT: op = "ult"; break;
2709 case FCmpInst::FCMP_ULE: op = "ule"; break;
2710 case FCmpInst::FCMP_UGT: op = "ugt"; break;
2711 case FCmpInst::FCMP_UGE: op = "uge"; break;
2712 case FCmpInst::FCMP_OEQ: op = "oeq"; break;
2713 case FCmpInst::FCMP_ONE: op = "one"; break;
2714 case FCmpInst::FCMP_OLT: op = "olt"; break;
2715 case FCmpInst::FCMP_OLE: op = "ole"; break;
2716 case FCmpInst::FCMP_OGT: op = "ogt"; break;
2717 case FCmpInst::FCMP_OGE: op = "oge"; break;
2720 Out << "llvm_fcmp_" << op << "(";
2721 // Write the first operand
2722 writeOperand(I.getOperand(0));
2724 // Write the second operand
2725 writeOperand(I.getOperand(1));
2729 static const char * getFloatBitCastField(const Type *Ty) {
2730 switch (Ty->getTypeID()) {
2731 default: assert(0 && "Invalid Type");
2732 case Type::FloatTyID: return "Float";
2733 case Type::DoubleTyID: return "Double";
2734 case Type::IntegerTyID: {
2735 unsigned NumBits = cast<IntegerType>(Ty)->getBitWidth();
2744 void CWriter::visitCastInst(CastInst &I) {
2745 const Type *DstTy = I.getType();
2746 const Type *SrcTy = I.getOperand(0)->getType();
2747 if (isFPIntBitCast(I)) {
2749 // These int<->float and long<->double casts need to be handled specially
2750 Out << GetValueName(&I) << "__BITCAST_TEMPORARY."
2751 << getFloatBitCastField(I.getOperand(0)->getType()) << " = ";
2752 writeOperand(I.getOperand(0));
2753 Out << ", " << GetValueName(&I) << "__BITCAST_TEMPORARY."
2754 << getFloatBitCastField(I.getType());
2760 printCast(I.getOpcode(), SrcTy, DstTy);
2762 // Make a sext from i1 work by subtracting the i1 from 0 (an int).
2763 if (SrcTy == Type::Int1Ty && I.getOpcode() == Instruction::SExt)
2766 writeOperand(I.getOperand(0));
2768 if (DstTy == Type::Int1Ty &&
2769 (I.getOpcode() == Instruction::Trunc ||
2770 I.getOpcode() == Instruction::FPToUI ||
2771 I.getOpcode() == Instruction::FPToSI ||
2772 I.getOpcode() == Instruction::PtrToInt)) {
2773 // Make sure we really get a trunc to bool by anding the operand with 1
2779 void CWriter::visitSelectInst(SelectInst &I) {
2781 writeOperand(I.getCondition());
2783 writeOperand(I.getTrueValue());
2785 writeOperand(I.getFalseValue());
2790 void CWriter::lowerIntrinsics(Function &F) {
2791 // This is used to keep track of intrinsics that get generated to a lowered
2792 // function. We must generate the prototypes before the function body which
2793 // will only be expanded on first use (by the loop below).
2794 std::vector<Function*> prototypesToGen;
2796 // Examine all the instructions in this function to find the intrinsics that
2797 // need to be lowered.
2798 for (Function::iterator BB = F.begin(), EE = F.end(); BB != EE; ++BB)
2799 for (BasicBlock::iterator I = BB->begin(), E = BB->end(); I != E; )
2800 if (CallInst *CI = dyn_cast<CallInst>(I++))
2801 if (Function *F = CI->getCalledFunction())
2802 switch (F->getIntrinsicID()) {
2803 case Intrinsic::not_intrinsic:
2804 case Intrinsic::memory_barrier:
2805 case Intrinsic::vastart:
2806 case Intrinsic::vacopy:
2807 case Intrinsic::vaend:
2808 case Intrinsic::returnaddress:
2809 case Intrinsic::frameaddress:
2810 case Intrinsic::setjmp:
2811 case Intrinsic::longjmp:
2812 case Intrinsic::prefetch:
2813 case Intrinsic::dbg_stoppoint:
2814 case Intrinsic::powi:
2815 case Intrinsic::x86_sse_cmp_ss:
2816 case Intrinsic::x86_sse_cmp_ps:
2817 case Intrinsic::x86_sse2_cmp_sd:
2818 case Intrinsic::x86_sse2_cmp_pd:
2819 case Intrinsic::ppc_altivec_lvsl:
2820 // We directly implement these intrinsics
2823 // If this is an intrinsic that directly corresponds to a GCC
2824 // builtin, we handle it.
2825 const char *BuiltinName = "";
2826 #define GET_GCC_BUILTIN_NAME
2827 #include "llvm/Intrinsics.gen"
2828 #undef GET_GCC_BUILTIN_NAME
2829 // If we handle it, don't lower it.
2830 if (BuiltinName[0]) break;
2832 // All other intrinsic calls we must lower.
2833 Instruction *Before = 0;
2834 if (CI != &BB->front())
2835 Before = prior(BasicBlock::iterator(CI));
2837 IL->LowerIntrinsicCall(CI);
2838 if (Before) { // Move iterator to instruction after call
2843 // If the intrinsic got lowered to another call, and that call has
2844 // a definition then we need to make sure its prototype is emitted
2845 // before any calls to it.
2846 if (CallInst *Call = dyn_cast<CallInst>(I))
2847 if (Function *NewF = Call->getCalledFunction())
2848 if (!NewF->isDeclaration())
2849 prototypesToGen.push_back(NewF);
2854 // We may have collected some prototypes to emit in the loop above.
2855 // Emit them now, before the function that uses them is emitted. But,
2856 // be careful not to emit them twice.
2857 std::vector<Function*>::iterator I = prototypesToGen.begin();
2858 std::vector<Function*>::iterator E = prototypesToGen.end();
2859 for ( ; I != E; ++I) {
2860 if (intrinsicPrototypesAlreadyGenerated.insert(*I).second) {
2862 printFunctionSignature(*I, true);
2868 void CWriter::visitCallInst(CallInst &I) {
2869 if (isa<InlineAsm>(I.getOperand(0)))
2870 return visitInlineAsm(I);
2872 bool WroteCallee = false;
2874 // Handle intrinsic function calls first...
2875 if (Function *F = I.getCalledFunction())
2876 if (Intrinsic::ID ID = (Intrinsic::ID)F->getIntrinsicID())
2877 if (visitBuiltinCall(I, ID, WroteCallee))
2880 Value *Callee = I.getCalledValue();
2882 const PointerType *PTy = cast<PointerType>(Callee->getType());
2883 const FunctionType *FTy = cast<FunctionType>(PTy->getElementType());
2885 // If this is a call to a struct-return function, assign to the first
2886 // parameter instead of passing it to the call.
2887 const AttrListPtr &PAL = I.getAttributes();
2888 bool hasByVal = I.hasByValArgument();
2889 bool isStructRet = I.hasStructRetAttr();
2891 writeOperandDeref(I.getOperand(1));
2895 if (I.isTailCall()) Out << " /*tail*/ ";
2898 // If this is an indirect call to a struct return function, we need to cast
2899 // the pointer. Ditto for indirect calls with byval arguments.
2900 bool NeedsCast = (hasByVal || isStructRet) && !isa<Function>(Callee);
2902 // GCC is a real PITA. It does not permit codegening casts of functions to
2903 // function pointers if they are in a call (it generates a trap instruction
2904 // instead!). We work around this by inserting a cast to void* in between
2905 // the function and the function pointer cast. Unfortunately, we can't just
2906 // form the constant expression here, because the folder will immediately
2909 // Note finally, that this is completely unsafe. ANSI C does not guarantee
2910 // that void* and function pointers have the same size. :( To deal with this
2911 // in the common case, we handle casts where the number of arguments passed
2914 if (ConstantExpr *CE = dyn_cast<ConstantExpr>(Callee))
2916 if (Function *RF = dyn_cast<Function>(CE->getOperand(0))) {
2922 // Ok, just cast the pointer type.
2925 printStructReturnPointerFunctionType(Out, PAL,
2926 cast<PointerType>(I.getCalledValue()->getType()));
2928 printType(Out, I.getCalledValue()->getType(), false, "", true, PAL);
2930 printType(Out, I.getCalledValue()->getType());
2933 writeOperand(Callee);
2934 if (NeedsCast) Out << ')';
2939 unsigned NumDeclaredParams = FTy->getNumParams();
2941 CallSite::arg_iterator AI = I.op_begin()+1, AE = I.op_end();
2943 if (isStructRet) { // Skip struct return argument.
2948 bool PrintedArg = false;
2949 for (; AI != AE; ++AI, ++ArgNo) {
2950 if (PrintedArg) Out << ", ";
2951 if (ArgNo < NumDeclaredParams &&
2952 (*AI)->getType() != FTy->getParamType(ArgNo)) {
2954 printType(Out, FTy->getParamType(ArgNo),
2955 /*isSigned=*/PAL.paramHasAttr(ArgNo+1, Attribute::SExt));
2958 // Check if the argument is expected to be passed by value.
2959 if (I.paramHasAttr(ArgNo+1, Attribute::ByVal))
2960 writeOperandDeref(*AI);
2968 /// visitBuiltinCall - Handle the call to the specified builtin. Returns true
2969 /// if the entire call is handled, return false it it wasn't handled, and
2970 /// optionally set 'WroteCallee' if the callee has already been printed out.
2971 bool CWriter::visitBuiltinCall(CallInst &I, Intrinsic::ID ID,
2972 bool &WroteCallee) {
2975 // If this is an intrinsic that directly corresponds to a GCC
2976 // builtin, we emit it here.
2977 const char *BuiltinName = "";
2978 Function *F = I.getCalledFunction();
2979 #define GET_GCC_BUILTIN_NAME
2980 #include "llvm/Intrinsics.gen"
2981 #undef GET_GCC_BUILTIN_NAME
2982 assert(BuiltinName[0] && "Unknown LLVM intrinsic!");
2988 case Intrinsic::memory_barrier:
2989 Out << "__sync_synchronize()";
2991 case Intrinsic::vastart:
2994 Out << "va_start(*(va_list*)";
2995 writeOperand(I.getOperand(1));
2997 // Output the last argument to the enclosing function.
2998 if (I.getParent()->getParent()->arg_empty()) {
2999 cerr << "The C backend does not currently support zero "
3000 << "argument varargs functions, such as '"
3001 << I.getParent()->getParent()->getName() << "'!\n";
3004 writeOperand(--I.getParent()->getParent()->arg_end());
3007 case Intrinsic::vaend:
3008 if (!isa<ConstantPointerNull>(I.getOperand(1))) {
3009 Out << "0; va_end(*(va_list*)";
3010 writeOperand(I.getOperand(1));
3013 Out << "va_end(*(va_list*)0)";
3016 case Intrinsic::vacopy:
3018 Out << "va_copy(*(va_list*)";
3019 writeOperand(I.getOperand(1));
3020 Out << ", *(va_list*)";
3021 writeOperand(I.getOperand(2));
3024 case Intrinsic::returnaddress:
3025 Out << "__builtin_return_address(";
3026 writeOperand(I.getOperand(1));
3029 case Intrinsic::frameaddress:
3030 Out << "__builtin_frame_address(";
3031 writeOperand(I.getOperand(1));
3034 case Intrinsic::powi:
3035 Out << "__builtin_powi(";
3036 writeOperand(I.getOperand(1));
3038 writeOperand(I.getOperand(2));
3041 case Intrinsic::setjmp:
3042 Out << "setjmp(*(jmp_buf*)";
3043 writeOperand(I.getOperand(1));
3046 case Intrinsic::longjmp:
3047 Out << "longjmp(*(jmp_buf*)";
3048 writeOperand(I.getOperand(1));
3050 writeOperand(I.getOperand(2));
3053 case Intrinsic::prefetch:
3054 Out << "LLVM_PREFETCH((const void *)";
3055 writeOperand(I.getOperand(1));
3057 writeOperand(I.getOperand(2));
3059 writeOperand(I.getOperand(3));
3062 case Intrinsic::stacksave:
3063 // Emit this as: Val = 0; *((void**)&Val) = __builtin_stack_save()
3064 // to work around GCC bugs (see PR1809).
3065 Out << "0; *((void**)&" << GetValueName(&I)
3066 << ") = __builtin_stack_save()";
3068 case Intrinsic::dbg_stoppoint: {
3069 // If we use writeOperand directly we get a "u" suffix which is rejected
3071 std::stringstream SPIStr;
3072 DbgStopPointInst &SPI = cast<DbgStopPointInst>(I);
3073 SPI.getDirectory()->print(SPIStr);
3077 Out << SPIStr.str();
3079 SPI.getFileName()->print(SPIStr);
3080 Out << SPIStr.str() << "\"\n";
3083 case Intrinsic::x86_sse_cmp_ss:
3084 case Intrinsic::x86_sse_cmp_ps:
3085 case Intrinsic::x86_sse2_cmp_sd:
3086 case Intrinsic::x86_sse2_cmp_pd:
3088 printType(Out, I.getType());
3090 // Multiple GCC builtins multiplex onto this intrinsic.
3091 switch (cast<ConstantInt>(I.getOperand(3))->getZExtValue()) {
3092 default: assert(0 && "Invalid llvm.x86.sse.cmp!");
3093 case 0: Out << "__builtin_ia32_cmpeq"; break;
3094 case 1: Out << "__builtin_ia32_cmplt"; break;
3095 case 2: Out << "__builtin_ia32_cmple"; break;
3096 case 3: Out << "__builtin_ia32_cmpunord"; break;
3097 case 4: Out << "__builtin_ia32_cmpneq"; break;
3098 case 5: Out << "__builtin_ia32_cmpnlt"; break;
3099 case 6: Out << "__builtin_ia32_cmpnle"; break;
3100 case 7: Out << "__builtin_ia32_cmpord"; break;
3102 if (ID == Intrinsic::x86_sse_cmp_ps || ID == Intrinsic::x86_sse2_cmp_pd)
3106 if (ID == Intrinsic::x86_sse_cmp_ss || ID == Intrinsic::x86_sse_cmp_ps)
3112 writeOperand(I.getOperand(1));
3114 writeOperand(I.getOperand(2));
3117 case Intrinsic::ppc_altivec_lvsl:
3119 printType(Out, I.getType());
3121 Out << "__builtin_altivec_lvsl(0, (void*)";
3122 writeOperand(I.getOperand(1));
3128 //This converts the llvm constraint string to something gcc is expecting.
3129 //TODO: work out platform independent constraints and factor those out
3130 // of the per target tables
3131 // handle multiple constraint codes
3132 std::string CWriter::InterpretASMConstraint(InlineAsm::ConstraintInfo& c) {
3134 assert(c.Codes.size() == 1 && "Too many asm constraint codes to handle");
3136 const char *const *table = 0;
3138 //Grab the translation table from TargetAsmInfo if it exists
3141 const TargetMachineRegistry::entry* Match =
3142 TargetMachineRegistry::getClosestStaticTargetForModule(*TheModule, E);
3144 //Per platform Target Machines don't exist, so create it
3145 // this must be done only once
3146 const TargetMachine* TM = Match->CtorFn(*TheModule, "");
3147 TAsm = TM->getTargetAsmInfo();
3151 table = TAsm->getAsmCBE();
3153 //Search the translation table if it exists
3154 for (int i = 0; table && table[i]; i += 2)
3155 if (c.Codes[0] == table[i])
3158 //default is identity
3162 //TODO: import logic from AsmPrinter.cpp
3163 static std::string gccifyAsm(std::string asmstr) {
3164 for (std::string::size_type i = 0; i != asmstr.size(); ++i)
3165 if (asmstr[i] == '\n')
3166 asmstr.replace(i, 1, "\\n");
3167 else if (asmstr[i] == '\t')
3168 asmstr.replace(i, 1, "\\t");
3169 else if (asmstr[i] == '$') {
3170 if (asmstr[i + 1] == '{') {
3171 std::string::size_type a = asmstr.find_first_of(':', i + 1);
3172 std::string::size_type b = asmstr.find_first_of('}', i + 1);
3173 std::string n = "%" +
3174 asmstr.substr(a + 1, b - a - 1) +
3175 asmstr.substr(i + 2, a - i - 2);
3176 asmstr.replace(i, b - i + 1, n);
3179 asmstr.replace(i, 1, "%");
3181 else if (asmstr[i] == '%')//grr
3182 { asmstr.replace(i, 1, "%%"); ++i;}
3187 //TODO: assumptions about what consume arguments from the call are likely wrong
3188 // handle communitivity
3189 void CWriter::visitInlineAsm(CallInst &CI) {
3190 InlineAsm* as = cast<InlineAsm>(CI.getOperand(0));
3191 std::vector<InlineAsm::ConstraintInfo> Constraints = as->ParseConstraints();
3193 std::vector<std::pair<Value*, int> > ResultVals;
3194 if (CI.getType() == Type::VoidTy)
3196 else if (const StructType *ST = dyn_cast<StructType>(CI.getType())) {
3197 for (unsigned i = 0, e = ST->getNumElements(); i != e; ++i)
3198 ResultVals.push_back(std::make_pair(&CI, (int)i));
3200 ResultVals.push_back(std::make_pair(&CI, -1));
3203 // Fix up the asm string for gcc and emit it.
3204 Out << "__asm__ volatile (\"" << gccifyAsm(as->getAsmString()) << "\"\n";
3207 unsigned ValueCount = 0;
3208 bool IsFirst = true;
3210 // Convert over all the output constraints.
3211 for (std::vector<InlineAsm::ConstraintInfo>::iterator I = Constraints.begin(),
3212 E = Constraints.end(); I != E; ++I) {
3214 if (I->Type != InlineAsm::isOutput) {
3216 continue; // Ignore non-output constraints.
3219 assert(I->Codes.size() == 1 && "Too many asm constraint codes to handle");
3220 std::string C = InterpretASMConstraint(*I);
3221 if (C.empty()) continue;
3232 if (ValueCount < ResultVals.size()) {
3233 DestVal = ResultVals[ValueCount].first;
3234 DestValNo = ResultVals[ValueCount].second;
3236 DestVal = CI.getOperand(ValueCount-ResultVals.size()+1);
3238 if (I->isEarlyClobber)
3241 Out << "\"=" << C << "\"(" << GetValueName(DestVal);
3242 if (DestValNo != -1)
3243 Out << ".field" << DestValNo; // Multiple retvals.
3249 // Convert over all the input constraints.
3253 for (std::vector<InlineAsm::ConstraintInfo>::iterator I = Constraints.begin(),
3254 E = Constraints.end(); I != E; ++I) {
3255 if (I->Type != InlineAsm::isInput) {
3257 continue; // Ignore non-input constraints.
3260 assert(I->Codes.size() == 1 && "Too many asm constraint codes to handle");
3261 std::string C = InterpretASMConstraint(*I);
3262 if (C.empty()) continue;
3269 assert(ValueCount >= ResultVals.size() && "Input can't refer to result");
3270 Value *SrcVal = CI.getOperand(ValueCount-ResultVals.size()+1);
3272 Out << "\"" << C << "\"(";
3274 writeOperand(SrcVal);
3276 writeOperandDeref(SrcVal);
3280 // Convert over the clobber constraints.
3283 for (std::vector<InlineAsm::ConstraintInfo>::iterator I = Constraints.begin(),
3284 E = Constraints.end(); I != E; ++I) {
3285 if (I->Type != InlineAsm::isClobber)
3286 continue; // Ignore non-input constraints.
3288 assert(I->Codes.size() == 1 && "Too many asm constraint codes to handle");
3289 std::string C = InterpretASMConstraint(*I);
3290 if (C.empty()) continue;
3297 Out << '\"' << C << '"';
3303 void CWriter::visitMallocInst(MallocInst &I) {
3304 assert(0 && "lowerallocations pass didn't work!");
3307 void CWriter::visitAllocaInst(AllocaInst &I) {
3309 printType(Out, I.getType());
3310 Out << ") alloca(sizeof(";
3311 printType(Out, I.getType()->getElementType());
3313 if (I.isArrayAllocation()) {
3315 writeOperand(I.getOperand(0));
3320 void CWriter::visitFreeInst(FreeInst &I) {
3321 assert(0 && "lowerallocations pass didn't work!");
3324 void CWriter::printGEPExpression(Value *Ptr, gep_type_iterator I,
3325 gep_type_iterator E, bool Static) {
3327 // If there are no indices, just print out the pointer.
3333 // Find out if the last index is into a vector. If so, we have to print this
3334 // specially. Since vectors can't have elements of indexable type, only the
3335 // last index could possibly be of a vector element.
3336 const VectorType *LastIndexIsVector = 0;
3338 for (gep_type_iterator TmpI = I; TmpI != E; ++TmpI)
3339 LastIndexIsVector = dyn_cast<VectorType>(*TmpI);
3344 // If the last index is into a vector, we can't print it as &a[i][j] because
3345 // we can't index into a vector with j in GCC. Instead, emit this as
3346 // (((float*)&a[i])+j)
3347 if (LastIndexIsVector) {
3349 printType(Out, PointerType::getUnqual(LastIndexIsVector->getElementType()));
3355 // If the first index is 0 (very typical) we can do a number of
3356 // simplifications to clean up the code.
3357 Value *FirstOp = I.getOperand();
3358 if (!isa<Constant>(FirstOp) || !cast<Constant>(FirstOp)->isNullValue()) {
3359 // First index isn't simple, print it the hard way.
3362 ++I; // Skip the zero index.
3364 // Okay, emit the first operand. If Ptr is something that is already address
3365 // exposed, like a global, avoid emitting (&foo)[0], just emit foo instead.
3366 if (isAddressExposed(Ptr)) {
3367 writeOperandInternal(Ptr, Static);
3368 } else if (I != E && isa<StructType>(*I)) {
3369 // If we didn't already emit the first operand, see if we can print it as
3370 // P->f instead of "P[0].f"
3372 Out << "->field" << cast<ConstantInt>(I.getOperand())->getZExtValue();
3373 ++I; // eat the struct index as well.
3375 // Instead of emitting P[0][1], emit (*P)[1], which is more idiomatic.
3382 for (; I != E; ++I) {
3383 if (isa<StructType>(*I)) {
3384 Out << ".field" << cast<ConstantInt>(I.getOperand())->getZExtValue();
3385 } else if (isa<ArrayType>(*I)) {
3387 writeOperandWithCast(I.getOperand(), Instruction::GetElementPtr);
3389 } else if (!isa<VectorType>(*I)) {
3391 writeOperandWithCast(I.getOperand(), Instruction::GetElementPtr);
3394 // If the last index is into a vector, then print it out as "+j)". This
3395 // works with the 'LastIndexIsVector' code above.
3396 if (isa<Constant>(I.getOperand()) &&
3397 cast<Constant>(I.getOperand())->isNullValue()) {
3398 Out << "))"; // avoid "+0".
3401 writeOperandWithCast(I.getOperand(), Instruction::GetElementPtr);
3409 void CWriter::writeMemoryAccess(Value *Operand, const Type *OperandType,
3410 bool IsVolatile, unsigned Alignment) {
3412 bool IsUnaligned = Alignment &&
3413 Alignment < TD->getABITypeAlignment(OperandType);
3417 if (IsVolatile || IsUnaligned) {
3420 Out << "struct __attribute__ ((packed, aligned(" << Alignment << "))) {";
3421 printType(Out, OperandType, false, IsUnaligned ? "data" : "volatile*");
3424 if (IsVolatile) Out << "volatile ";
3430 writeOperand(Operand);
3432 if (IsVolatile || IsUnaligned) {
3439 void CWriter::visitLoadInst(LoadInst &I) {
3440 writeMemoryAccess(I.getOperand(0), I.getType(), I.isVolatile(),
3445 void CWriter::visitStoreInst(StoreInst &I) {
3446 writeMemoryAccess(I.getPointerOperand(), I.getOperand(0)->getType(),
3447 I.isVolatile(), I.getAlignment());
3449 Value *Operand = I.getOperand(0);
3450 Constant *BitMask = 0;
3451 if (const IntegerType* ITy = dyn_cast<IntegerType>(Operand->getType()))
3452 if (!ITy->isPowerOf2ByteWidth())
3453 // We have a bit width that doesn't match an even power-of-2 byte
3454 // size. Consequently we must & the value with the type's bit mask
3455 BitMask = ConstantInt::get(ITy, ITy->getBitMask());
3458 writeOperand(Operand);
3461 printConstant(BitMask, false);
3466 void CWriter::visitGetElementPtrInst(GetElementPtrInst &I) {
3467 printGEPExpression(I.getPointerOperand(), gep_type_begin(I),
3468 gep_type_end(I), false);
3471 void CWriter::visitVAArgInst(VAArgInst &I) {
3472 Out << "va_arg(*(va_list*)";
3473 writeOperand(I.getOperand(0));
3475 printType(Out, I.getType());
3479 void CWriter::visitInsertElementInst(InsertElementInst &I) {
3480 const Type *EltTy = I.getType()->getElementType();
3481 writeOperand(I.getOperand(0));
3484 printType(Out, PointerType::getUnqual(EltTy));
3485 Out << ")(&" << GetValueName(&I) << "))[";
3486 writeOperand(I.getOperand(2));
3488 writeOperand(I.getOperand(1));
3492 void CWriter::visitExtractElementInst(ExtractElementInst &I) {
3493 // We know that our operand is not inlined.
3496 cast<VectorType>(I.getOperand(0)->getType())->getElementType();
3497 printType(Out, PointerType::getUnqual(EltTy));
3498 Out << ")(&" << GetValueName(I.getOperand(0)) << "))[";
3499 writeOperand(I.getOperand(1));
3503 void CWriter::visitShuffleVectorInst(ShuffleVectorInst &SVI) {
3505 printType(Out, SVI.getType());
3507 const VectorType *VT = SVI.getType();
3508 unsigned NumElts = VT->getNumElements();
3509 const Type *EltTy = VT->getElementType();
3511 for (unsigned i = 0; i != NumElts; ++i) {
3513 int SrcVal = SVI.getMaskValue(i);
3514 if ((unsigned)SrcVal >= NumElts*2) {
3515 Out << " 0/*undef*/ ";
3517 Value *Op = SVI.getOperand((unsigned)SrcVal >= NumElts);
3518 if (isa<Instruction>(Op)) {
3519 // Do an extractelement of this value from the appropriate input.
3521 printType(Out, PointerType::getUnqual(EltTy));
3522 Out << ")(&" << GetValueName(Op)
3523 << "))[" << (SrcVal & (NumElts-1)) << "]";
3524 } else if (isa<ConstantAggregateZero>(Op) || isa<UndefValue>(Op)) {
3527 printConstant(cast<ConstantVector>(Op)->getOperand(SrcVal &
3536 void CWriter::visitInsertValueInst(InsertValueInst &IVI) {
3537 // Start by copying the entire aggregate value into the result variable.
3538 writeOperand(IVI.getOperand(0));
3541 // Then do the insert to update the field.
3542 Out << GetValueName(&IVI);
3543 for (const unsigned *b = IVI.idx_begin(), *i = b, *e = IVI.idx_end();
3545 const Type *IndexedTy =
3546 ExtractValueInst::getIndexedType(IVI.getOperand(0)->getType(), b, i+1);
3547 if (isa<ArrayType>(IndexedTy))
3548 Out << ".array[" << *i << "]";
3550 Out << ".field" << *i;
3553 writeOperand(IVI.getOperand(1));
3556 void CWriter::visitExtractValueInst(ExtractValueInst &EVI) {
3558 if (isa<UndefValue>(EVI.getOperand(0))) {
3560 printType(Out, EVI.getType());
3561 Out << ") 0/*UNDEF*/";
3563 Out << GetValueName(EVI.getOperand(0));
3564 for (const unsigned *b = EVI.idx_begin(), *i = b, *e = EVI.idx_end();
3566 const Type *IndexedTy =
3567 ExtractValueInst::getIndexedType(EVI.getOperand(0)->getType(), b, i+1);
3568 if (isa<ArrayType>(IndexedTy))
3569 Out << ".array[" << *i << "]";
3571 Out << ".field" << *i;
3577 //===----------------------------------------------------------------------===//
3578 // External Interface declaration
3579 //===----------------------------------------------------------------------===//
3581 bool CTargetMachine::addPassesToEmitWholeFile(PassManager &PM,
3583 CodeGenFileType FileType,
3585 if (FileType != TargetMachine::AssemblyFile) return true;
3587 PM.add(createGCLoweringPass());
3588 PM.add(createLowerAllocationsPass(true));
3589 PM.add(createLowerInvokePass());
3590 PM.add(createCFGSimplificationPass()); // clean up after lower invoke.
3591 PM.add(new CBackendNameAllUsedStructsAndMergeFunctions());
3592 PM.add(new CWriter(o));
3593 PM.add(createGCInfoDeleter());