diff options
Diffstat (limited to 'contrib/llvm/lib/Transforms/Utils/BuildLibCalls.cpp')
| -rw-r--r-- | contrib/llvm/lib/Transforms/Utils/BuildLibCalls.cpp | 67 |
1 files changed, 46 insertions, 21 deletions
diff --git a/contrib/llvm/lib/Transforms/Utils/BuildLibCalls.cpp b/contrib/llvm/lib/Transforms/Utils/BuildLibCalls.cpp index 767fa3a..7a9d007 100644 --- a/contrib/llvm/lib/Transforms/Utils/BuildLibCalls.cpp +++ b/contrib/llvm/lib/Transforms/Utils/BuildLibCalls.cpp @@ -69,6 +69,31 @@ Value *llvm::EmitStrChr(Value *Ptr, char C, IRBuilder<> &B, return CI; } +/// EmitStrNCmp - Emit a call to the strncmp function to the builder. +Value *llvm::EmitStrNCmp(Value *Ptr1, Value *Ptr2, Value *Len, + IRBuilder<> &B, const TargetData *TD) { + Module *M = B.GetInsertBlock()->getParent()->getParent(); + AttributeWithIndex AWI[3]; + AWI[0] = AttributeWithIndex::get(1, Attribute::NoCapture); + AWI[1] = AttributeWithIndex::get(2, Attribute::NoCapture); + AWI[2] = AttributeWithIndex::get(~0u, Attribute::ReadOnly | + Attribute::NoUnwind); + + LLVMContext &Context = B.GetInsertBlock()->getContext(); + Value *StrNCmp = M->getOrInsertFunction("strncmp", AttrListPtr::get(AWI, 3), + B.getInt32Ty(), + B.getInt8PtrTy(), + B.getInt8PtrTy(), + TD->getIntPtrType(Context), NULL); + CallInst *CI = B.CreateCall3(StrNCmp, CastToCStr(Ptr1, B), + CastToCStr(Ptr2, B), Len, "strncmp"); + + if (const Function *F = dyn_cast<Function>(StrNCmp->stripPointerCasts())) + CI->setCallingConv(F->getCallingConv()); + + return CI; +} + /// EmitStrCpy - Emit a call to the strcpy function to the builder, for the /// specified pointer arguments. Value *llvm::EmitStrCpy(Value *Dst, Value *Src, IRBuilder<> &B, @@ -112,10 +137,10 @@ Value *llvm::EmitStrNCpy(Value *Dst, Value *Src, Value *Len, Value *llvm::EmitMemCpy(Value *Dst, Value *Src, Value *Len, unsigned Align, bool isVolatile, IRBuilder<> &B, const TargetData *TD) { Module *M = B.GetInsertBlock()->getParent()->getParent(); - const Type *ArgTys[3] = { Dst->getType(), Src->getType(), Len->getType() }; - Value *MemCpy = Intrinsic::getDeclaration(M, Intrinsic::memcpy, ArgTys, 3); Dst = CastToCStr(Dst, B); Src = CastToCStr(Src, B); + const Type *ArgTys[3] = { Dst->getType(), Src->getType(), Len->getType() }; + Value *MemCpy = Intrinsic::getDeclaration(M, Intrinsic::memcpy, ArgTys, 3); return B.CreateCall5(MemCpy, Dst, Src, Len, ConstantInt::get(B.getInt32Ty(), Align), ConstantInt::get(B.getInt1Ty(), isVolatile)); @@ -395,11 +420,11 @@ bool SimplifyFortifiedLibCalls::fold(CallInst *CI, const TargetData *TD) { FT->getParamType(2) != TD->getIntPtrType(Context) || FT->getParamType(3) != TD->getIntPtrType(Context)) return false; - - if (isFoldable(4, 3, false)) { - EmitMemCpy(CI->getOperand(1), CI->getOperand(2), CI->getOperand(3), + + if (isFoldable(3 + CallInst::ArgOffset, 2 + CallInst::ArgOffset, false)) { + EmitMemCpy(CI->getArgOperand(0), CI->getArgOperand(1), CI->getArgOperand(2), 1, false, B, TD); - replaceCall(CI->getOperand(1)); + replaceCall(CI->getArgOperand(0)); return true; } return false; @@ -418,11 +443,11 @@ bool SimplifyFortifiedLibCalls::fold(CallInst *CI, const TargetData *TD) { FT->getParamType(2) != TD->getIntPtrType(Context) || FT->getParamType(3) != TD->getIntPtrType(Context)) return false; - - if (isFoldable(4, 3, false)) { - EmitMemMove(CI->getOperand(1), CI->getOperand(2), CI->getOperand(3), + + if (isFoldable(3 + CallInst::ArgOffset, 2 + CallInst::ArgOffset, false)) { + EmitMemMove(CI->getArgOperand(0), CI->getArgOperand(1), CI->getArgOperand(2), 1, false, B, TD); - replaceCall(CI->getOperand(1)); + replaceCall(CI->getArgOperand(0)); return true; } return false; @@ -436,12 +461,12 @@ bool SimplifyFortifiedLibCalls::fold(CallInst *CI, const TargetData *TD) { FT->getParamType(2) != TD->getIntPtrType(Context) || FT->getParamType(3) != TD->getIntPtrType(Context)) return false; - - if (isFoldable(4, 3, false)) { - Value *Val = B.CreateIntCast(CI->getOperand(2), B.getInt8Ty(), + + if (isFoldable(3 + CallInst::ArgOffset, 2 + CallInst::ArgOffset, false)) { + Value *Val = B.CreateIntCast(CI->getArgOperand(1), B.getInt8Ty(), false); - EmitMemSet(CI->getOperand(1), Val, CI->getOperand(3), false, B, TD); - replaceCall(CI->getOperand(1)); + EmitMemSet(CI->getArgOperand(0), Val, CI->getArgOperand(2), false, B, TD); + replaceCall(CI->getArgOperand(0)); return true; } return false; @@ -462,8 +487,8 @@ bool SimplifyFortifiedLibCalls::fold(CallInst *CI, const TargetData *TD) { // st[rp]cpy_chk call which may fail at runtime if the size is too long. // TODO: It might be nice to get a maximum length out of the possible // string lengths for varying. - if (isFoldable(3, 2, true)) { - Value *Ret = EmitStrCpy(CI->getOperand(1), CI->getOperand(2), B, TD, + if (isFoldable(2 + CallInst::ArgOffset, 1 + CallInst::ArgOffset, true)) { + Value *Ret = EmitStrCpy(CI->getArgOperand(0), CI->getArgOperand(1), B, TD, Name.substr(2, 6)); replaceCall(Ret); return true; @@ -479,10 +504,10 @@ bool SimplifyFortifiedLibCalls::fold(CallInst *CI, const TargetData *TD) { !FT->getParamType(2)->isIntegerTy() || FT->getParamType(3) != TD->getIntPtrType(Context)) return false; - - if (isFoldable(4, 3, false)) { - Value *Ret = EmitStrNCpy(CI->getOperand(1), CI->getOperand(2), - CI->getOperand(3), B, TD, Name.substr(2, 7)); + + if (isFoldable(3 + CallInst::ArgOffset, 2 + CallInst::ArgOffset, false)) { + Value *Ret = EmitStrNCpy(CI->getArgOperand(0), CI->getArgOperand(1), + CI->getArgOperand(2), B, TD, Name.substr(2, 7)); replaceCall(Ret); return true; } |
