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tidy up, remove dependence on order of evaluation of function args from EmitMemCpy. 

llvm-svn: 90297
This commit is contained in:
Chris Lattner 2009-12-02 06:05:42 +00:00
parent af35329f71
commit eea42c7b51
1 changed files with 12 additions and 15 deletions
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27
llvm/lib/Transforms/Scalar/SimplifyLibCalls.cpp
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@ -128,8 +128,7 @@ public:
/// CastToCStr - Return V if it is an i8*, otherwise cast it to i8*. /// CastToCStr - Return V if it is an i8*, otherwise cast it to i8*.
Value *LibCallOptimization::CastToCStr(Value *V, IRBuilder<> &B) { Value *LibCallOptimization::CastToCStr(Value *V, IRBuilder<> &B) {
return return B.CreateBitCast(V, Type::getInt8PtrTy(*Context), "cstr");
B.CreateBitCast(V, Type::getInt8PtrTy(*Context), "cstr");
} }
/// EmitStrLen - Emit a call to the strlen function to the builder, for the /// EmitStrLen - Emit a call to the strlen function to the builder, for the
@ -157,27 +156,25 @@ Value *LibCallOptimization::EmitStrLen(Value *Ptr, IRBuilder<> &B) {
Value *LibCallOptimization::EmitMemCpy(Value *Dst, Value *Src, Value *Len, Value *LibCallOptimization::EmitMemCpy(Value *Dst, Value *Src, Value *Len,
unsigned Align, IRBuilder<> &B) { unsigned Align, IRBuilder<> &B) {
Module *M = Caller->getParent(); Module *M = Caller->getParent();
Intrinsic::ID IID = Intrinsic::memcpy; const Type *Ty = Len->getType();
const Type *Tys[1]; Value *MemCpy = Intrinsic::getDeclaration(M, Intrinsic::memcpy, &Ty, 1);
Tys[0] = Len->getType(); Dst = CastToCStr(Dst, B);
Value *MemCpy = Intrinsic::getDeclaration(M, IID, Tys, 1); Src = CastToCStr(Src, B);
return B.CreateCall4(MemCpy, CastToCStr(Dst, B), CastToCStr(Src, B), Len, return B.CreateCall4(MemCpy, Dst, Src, Len,
ConstantInt::get(Type::getInt32Ty(*Context), Align)); ConstantInt::get(Type::getInt32Ty(*Context), Align));
} }
/// EmitMemMOve - Emit a call to the memmove function to the builder. This /// EmitMemMove - Emit a call to the memmove function to the builder. This
/// always expects that the size has type 'intptr_t' and Dst/Src are pointers. /// always expects that the size has type 'intptr_t' and Dst/Src are pointers.
Value *LibCallOptimization::EmitMemMove(Value *Dst, Value *Src, Value *Len, Value *LibCallOptimization::EmitMemMove(Value *Dst, Value *Src, Value *Len,
unsigned Align, IRBuilder<> &B) { unsigned Align, IRBuilder<> &B) {
Module *M = Caller->getParent(); Module *M = Caller->getParent();
Intrinsic::ID IID = Intrinsic::memmove; const Type *Ty = TD->getIntPtrType(*Context);
const Type *Tys[1]; Value *MemMove = Intrinsic::getDeclaration(M, Intrinsic::memmove, &Ty, 1);
Tys[0] = TD->getIntPtrType(*Context); Dst = CastToCStr(Dst, B);
Value *MemMove = Intrinsic::getDeclaration(M, IID, Tys, 1); Src = CastToCStr(Src, B);
Value *D = CastToCStr(Dst, B);
Value *S = CastToCStr(Src, B);
Value *A = ConstantInt::get(Type::getInt32Ty(*Context), Align); Value *A = ConstantInt::get(Type::getInt32Ty(*Context), Align);
return B.CreateCall4(MemMove, D, S, Len, A); return B.CreateCall4(MemMove, Dst, Src, Len, A);
} }
/// EmitMemChr - Emit a call to the memchr function. This assumes that Ptr is /// EmitMemChr - Emit a call to the memchr function. This assumes that Ptr is