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Simplify fprintf(file, "%s", str) to fputs(str, file).

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28814 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2006-06-16 04:52:30 +00:00
parent 94de9a8951
commit 952895243e
1 changed files with 36 additions and 16 deletions
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52
lib/Transforms/IPO/SimplifyLibCalls.cpp
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@ -229,6 +229,15 @@ public:
return fputc_func;
}
/// @brief Return a Function* for the fputs libcall
Function* get_fputs(const Type* FILEptr_type) {
if (!fputs_func)
fputs_func = M->getOrInsertFunction("fputs", Type::IntTy,
PointerType::get(Type::SByteTy),
FILEptr_type, NULL);
return fputs_func;
}
/// @brief Return a Function* for the fwrite libcall
Function* get_fwrite(const Type* FILEptr_type) {
if (!fwrite_func)
@ -310,6 +319,7 @@ private:
M = &mod;
TD = &getAnalysis<TargetData>();
fputc_func = 0;
fputs_func = 0;
fwrite_func = 0;
memcpy_func = 0;
memchr_func = 0;
@ -325,7 +335,7 @@ private:
private:
/// Caches for function pointers.
Function *fputc_func, *fwrite_func;
Function *fputc_func, *fputs_func, *fwrite_func;
Function *memcpy_func, *memchr_func;
Function* sqrt_func;
Function *strcpy_func, *strlen_func;
@ -1340,21 +1350,31 @@ public:
{
uint64_t len = 0;
ConstantArray* CA = 0;
if (!getConstantStringLength(ci->getOperand(3), len, &CA))
return false;
// fprintf(file,"%s",str) -> fwrite(fmt,strlen(fmt),1,file)
const Type* FILEptr_type = ci->getOperand(1)->getType();
Function* fwrite_func = SLC.get_fwrite(FILEptr_type);
if (!fwrite_func)
return false;
std::vector<Value*> args;
args.push_back(CastToCStr(ci->getOperand(3), *ci));
args.push_back(ConstantUInt::get(SLC.getIntPtrType(),len));
args.push_back(ConstantUInt::get(SLC.getIntPtrType(),1));
args.push_back(ci->getOperand(1));
new CallInst(fwrite_func,args,ci->getName(),ci);
ci->replaceAllUsesWith(ConstantSInt::get(Type::IntTy,len));
if (getConstantStringLength(ci->getOperand(3), len, &CA)) {
// fprintf(file,"%s",str) -> fwrite(str,strlen(str),1,file)
const Type* FILEptr_type = ci->getOperand(1)->getType();
Function* fwrite_func = SLC.get_fwrite(FILEptr_type);
if (!fwrite_func)
return false;
std::vector<Value*> args;
args.push_back(CastToCStr(ci->getOperand(3), *ci));
args.push_back(ConstantUInt::get(SLC.getIntPtrType(),len));
args.push_back(ConstantUInt::get(SLC.getIntPtrType(),1));
args.push_back(ci->getOperand(1));
new CallInst(fwrite_func,args,ci->getName(),ci);
ci->replaceAllUsesWith(ConstantSInt::get(Type::IntTy,len));
} else {
// fprintf(file,"%s",str) -> fputs(str,file)
const Type* FILEptr_type = ci->getOperand(1)->getType();
Function* fputs_func = SLC.get_fputs(FILEptr_type);
if (!fputs_func)
return false;
std::vector<Value*> args;
args.push_back(ci->getOperand(3));
args.push_back(ci->getOperand(1));
new CallInst(fputs_func,args,ci->getName(),ci);
ci->replaceAllUsesWith(ConstantSInt::get(Type::IntTy,len));
}
break;
}
case 'c':