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Make TargetData optional in SimplifyLibCalls.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79298 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2009-08-18 00:48:13 +00:00
parent 0855f10906
commit f14d919742
1 changed files with 45 additions and 7 deletions
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52
lib/Transforms/Scalar/SimplifyLibCalls.cpp
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@ -63,9 +63,9 @@ public:
virtual Value *CallOptimizer(Function *Callee, CallInst *CI, IRBuilder<> &B)
=0;
Value *OptimizeCall(CallInst *CI, const TargetData &TD, IRBuilder<> &B) {
Value *OptimizeCall(CallInst *CI, const TargetData *TD, IRBuilder<> &B) {
Caller = CI->getParent()->getParent();
this->TD = &TD;
this->TD = TD;
if (CI->getCalledFunction())
Context = &CI->getCalledFunction()->getContext();
return CallOptimizer(CI->getCalledFunction(), CI, B);
@ -573,7 +573,10 @@ struct VISIBILITY_HIDDEN StrCatOpt : public LibCallOptimization {
// Handle the simple, do-nothing case: strcat(x, "") -> x
if (Len == 0)
return Dst;
// These optimizations require TargetData.
if (!TD) return 0;
EmitStrLenMemCpy(Src, Dst, Len, B);
return Dst;
}
@ -630,6 +633,9 @@ struct VISIBILITY_HIDDEN StrNCatOpt : public StrCatOpt {
// strncat(x, c, 0) -> x
if (SrcLen == 0 || Len == 0) return Dst;
// These optimizations require TargetData.
if (!TD) return 0;
// We don't optimize this case
if (Len < SrcLen) return 0;
@ -658,6 +664,9 @@ struct VISIBILITY_HIDDEN StrChrOpt : public LibCallOptimization {
// of the input string and turn this into memchr.
ConstantInt *CharC = dyn_cast<ConstantInt>(CI->getOperand(2));
if (CharC == 0) {
// These optimizations require TargetData.
if (!TD) return 0;
uint64_t Len = GetStringLength(SrcStr);
if (Len == 0 || FT->getParamType(1) != Type::getInt32Ty(*Context)) // memchr needs i32.
return 0;
@ -728,6 +737,9 @@ struct VISIBILITY_HIDDEN StrCmpOpt : public LibCallOptimization {
uint64_t Len1 = GetStringLength(Str1P);
uint64_t Len2 = GetStringLength(Str2P);
if (Len1 && Len2) {
// These optimizations require TargetData.
if (!TD) return 0;
return EmitMemCmp(Str1P, Str2P,
ConstantInt::get(TD->getIntPtrType(*Context),
std::min(Len1, Len2)), B);
@ -799,6 +811,9 @@ struct VISIBILITY_HIDDEN StrCpyOpt : public LibCallOptimization {
if (Dst == Src) // strcpy(x,x) -> x
return Src;
// These optimizations require TargetData.
if (!TD) return 0;
// See if we can get the length of the input string.
uint64_t Len = GetStringLength(Src);
if (Len == 0) return 0;
@ -846,6 +861,9 @@ struct VISIBILITY_HIDDEN StrNCpyOpt : public LibCallOptimization {
if (Len == 0) return Dst; // strncpy(x, y, 0) -> x
// These optimizations require TargetData.
if (!TD) return 0;
// Let strncpy handle the zero padding
if (Len > SrcLen+1) return 0;
@ -957,6 +975,9 @@ struct VISIBILITY_HIDDEN MemCmpOpt : public LibCallOptimization {
struct VISIBILITY_HIDDEN MemCpyOpt : public LibCallOptimization {
virtual Value *CallOptimizer(Function *Callee, CallInst *CI, IRBuilder<> &B) {
// These optimizations require TargetData.
if (!TD) return 0;
const FunctionType *FT = Callee->getFunctionType();
if (FT->getNumParams() != 3 || FT->getReturnType() != FT->getParamType(0) ||
!isa<PointerType>(FT->getParamType(0)) ||
@ -975,6 +996,9 @@ struct VISIBILITY_HIDDEN MemCpyOpt : public LibCallOptimization {
struct VISIBILITY_HIDDEN MemMoveOpt : public LibCallOptimization {
virtual Value *CallOptimizer(Function *Callee, CallInst *CI, IRBuilder<> &B) {
// These optimizations require TargetData.
if (!TD) return 0;
const FunctionType *FT = Callee->getFunctionType();
if (FT->getNumParams() != 3 || FT->getReturnType() != FT->getParamType(0) ||
!isa<PointerType>(FT->getParamType(0)) ||
@ -1002,6 +1026,9 @@ struct VISIBILITY_HIDDEN MemMoveOpt : public LibCallOptimization {
struct VISIBILITY_HIDDEN MemSetOpt : public LibCallOptimization {
virtual Value *CallOptimizer(Function *Callee, CallInst *CI, IRBuilder<> &B) {
// These optimizations require TargetData.
if (!TD) return 0;
const FunctionType *FT = Callee->getFunctionType();
if (FT->getNumParams() != 3 || FT->getReturnType() != FT->getParamType(0) ||
!isa<PointerType>(FT->getParamType(0)) ||
@ -1352,7 +1379,10 @@ struct VISIBILITY_HIDDEN SPrintFOpt : public LibCallOptimization {
for (unsigned i = 0, e = FormatStr.size(); i != e; ++i)
if (FormatStr[i] == '%')
return 0; // we found a format specifier, bail out.
// These optimizations require TargetData.
if (!TD) return 0;
// sprintf(str, fmt) -> llvm.memcpy(str, fmt, strlen(fmt)+1, 1)
EmitMemCpy(CI->getOperand(1), CI->getOperand(2), // Copy the nul byte.
ConstantInt::get(TD->getIntPtrType(*Context), FormatStr.size()+1),1,B);
@ -1378,6 +1408,9 @@ struct VISIBILITY_HIDDEN SPrintFOpt : public LibCallOptimization {
}
if (FormatStr[1] == 's') {
// These optimizations require TargetData.
if (!TD) return 0;
// sprintf(dest, "%s", str) -> llvm.memcpy(dest, str, strlen(str)+1, 1)
if (!isa<PointerType>(CI->getOperand(3)->getType())) return 0;
@ -1434,6 +1467,9 @@ struct VISIBILITY_HIDDEN FWriteOpt : public LibCallOptimization {
struct VISIBILITY_HIDDEN FPutsOpt : public LibCallOptimization {
virtual Value *CallOptimizer(Function *Callee, CallInst *CI, IRBuilder<> &B) {
// These optimizations require TargetData.
if (!TD) return 0;
// Require two pointers. Also, we can't optimize if return value is used.
const FunctionType *FT = Callee->getFunctionType();
if (FT->getNumParams() != 2 || !isa<PointerType>(FT->getParamType(0)) ||
@ -1473,7 +1509,10 @@ struct VISIBILITY_HIDDEN FPrintFOpt : public LibCallOptimization {
for (unsigned i = 0, e = FormatStr.size(); i != e; ++i)
if (FormatStr[i] == '%') // Could handle %% -> % if we cared.
return 0; // We found a format specifier.
// These optimizations require TargetData.
if (!TD) return 0;
EmitFWrite(CI->getOperand(2), ConstantInt::get(TD->getIntPtrType(*Context),
FormatStr.size()),
CI->getOperand(1), B);
@ -1547,7 +1586,6 @@ namespace {
bool doInitialization(Module &M);
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
AU.addRequired<TargetData>();
}
};
char SimplifyLibCalls::ID = 0;
@ -1648,7 +1686,7 @@ bool SimplifyLibCalls::runOnFunction(Function &F) {
if (Optimizations.empty())
InitOptimizations();
const TargetData &TD = getAnalysis<TargetData>();
const TargetData *TD = getAnalysisIfAvailable<TargetData>();
IRBuilder<> Builder(F.getContext());