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Add support for custom names for library functions in TargetLibraryInfo. Add a custom name for fwrite and fputs on x86-32 OSX. Make SimplifyLibCalls honor the custom

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names for fwrite and fputs.

Fixes <rdar://problem/9815881>.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144876 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eli Friedman
2011-11-17 01:27:36 +00:00
parent d5889d8c7f
commit 9d434dbff3
6 changed files with 134 additions and 21 deletions
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lib/Transforms/Scalar/SimplifyLibCalls.cpp
+13 -7
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@@ -1323,7 +1323,7 @@ struct FPutsOpt : public LibCallOptimization {
if (!Len) return 0;
EmitFWrite(CI->getArgOperand(0),
ConstantInt::get(TD->getIntPtrType(*Context), Len-1),
CI->getArgOperand(1), B, TD);
CI->getArgOperand(1), B, TD, TLI);
return CI; // Known to have no uses (see above).
}
};
@@ -1351,7 +1351,7 @@ struct FPrintFOpt : public LibCallOptimization {
EmitFWrite(CI->getArgOperand(1),
ConstantInt::get(TD->getIntPtrType(*Context),
FormatStr.size()),
CI->getArgOperand(0), B, TD);
CI->getArgOperand(0), B, TD, TLI);
return ConstantInt::get(CI->getType(), FormatStr.size());
}
@@ -1373,7 +1373,7 @@ struct FPrintFOpt : public LibCallOptimization {
// fprintf(F, "%s", str) --> fputs(str, F)
if (!CI->getArgOperand(2)->getType()->isPointerTy() || !CI->use_empty())
return 0;
EmitFPutS(CI->getArgOperand(2), CI->getArgOperand(0), B, TD);
EmitFPutS(CI->getArgOperand(2), CI->getArgOperand(0), B, TD, TLI);
return CI;
}
return 0;
@@ -1469,6 +1469,7 @@ namespace {
SimplifyLibCalls() : FunctionPass(ID), StrCpy(false), StrCpyChk(true) {
initializeSimplifyLibCallsPass(*PassRegistry::getPassRegistry());
}
void AddOpt(LibFunc::Func F, LibCallOptimization* Opt);
void InitOptimizations();
bool runOnFunction(Function &F);
@@ -1499,6 +1500,11 @@ FunctionPass *llvm::createSimplifyLibCallsPass() {
return new SimplifyLibCalls();
}
void SimplifyLibCalls::AddOpt(LibFunc::Func F, LibCallOptimization* Opt) {
if (TLI->has(F))
Optimizations[TLI->getName(F)] = Opt;
}
/// Optimizations - Populate the Optimizations map with all the optimizations
/// we know.
void SimplifyLibCalls::InitOptimizations() {
@@ -1524,9 +1530,9 @@ void SimplifyLibCalls::InitOptimizations() {
Optimizations["strcspn"] = &StrCSpn;
Optimizations["strstr"] = &StrStr;
Optimizations["memcmp"] = &MemCmp;
if (TLI->has(LibFunc::memcpy)) Optimizations["memcpy"] = &MemCpy;
AddOpt(LibFunc::memcpy, &MemCpy);
Optimizations["memmove"] = &MemMove;
if (TLI->has(LibFunc::memset)) Optimizations["memset"] = &MemSet;
AddOpt(LibFunc::memset, &MemSet);
// _chk variants of String and Memory LibCall Optimizations.
Optimizations["__strcpy_chk"] = &StrCpyChk;
@@ -1579,8 +1585,8 @@ void SimplifyLibCalls::InitOptimizations() {
// Formatting and IO Optimizations
Optimizations["sprintf"] = &SPrintF;
Optimizations["printf"] = &PrintF;
Optimizations["fwrite"] = &FWrite;
Optimizations["fputs"] = &FPuts;
AddOpt(LibFunc::fwrite, &FWrite);
AddOpt(LibFunc::fputs, &FPuts);
Optimizations["fprintf"] = &FPrintF;
Optimizations["puts"] = &Puts;
}