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instcombine: Query target library information to gate libcall simplifications

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Several of the simplifiers migrated from the simplify-libcalls pass to
the instcombine pass were not correctly checking the target library
information to gate the simplifications.  This patch ensures that the
check is made.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167660 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Meador Inge
2012-11-10 03:11:10 +00:00
parent 939f500202
commit e29c88064f
2 changed files with 252 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files

44
lib/Transforms/Utils/SimplifyLibCalls.cpp
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@ -834,6 +834,7 @@ class LibCallSimplifierImpl {
StrSpnOpt StrSpn;
void initOptimizations();
void addOpt(LibFunc::Func F, LibCallOptimization* Opt);
public:
LibCallSimplifierImpl(const DataLayout *TD, const TargetLibraryInfo *TLI) {
this->TD = TD;
@ -854,25 +855,25 @@ void LibCallSimplifierImpl::initOptimizations() {
Optimizations["__stpncpy_chk"] = &StrNCpyChk;
// String and memory library call optimizations.
Optimizations["strcat"] = &StrCat;
Optimizations["strncat"] = &StrNCat;
Optimizations["strchr"] = &StrChr;
Optimizations["strrchr"] = &StrRChr;
Optimizations["strcmp"] = &StrCmp;
Optimizations["strncmp"] = &StrNCmp;
Optimizations["strcpy"] = &StrCpy;
Optimizations["stpcpy"] = &StpCpy;
Optimizations["strncpy"] = &StrNCpy;
Optimizations["strlen"] = &StrLen;
Optimizations["strpbrk"] = &StrPBrk;
Optimizations["strtol"] = &StrTo;
Optimizations["strtod"] = &StrTo;
Optimizations["strtof"] = &StrTo;
Optimizations["strtoul"] = &StrTo;
Optimizations["strtoll"] = &StrTo;
Optimizations["strtold"] = &StrTo;
Optimizations["strtoull"] = &StrTo;
Optimizations["strspn"] = &StrSpn;
addOpt(LibFunc::strcat, &StrCat);
addOpt(LibFunc::strncat, &StrNCat);
addOpt(LibFunc::strchr, &StrChr);
addOpt(LibFunc::strrchr, &StrRChr);
addOpt(LibFunc::strcmp, &StrCmp);
addOpt(LibFunc::strncmp, &StrNCmp);
addOpt(LibFunc::strcpy, &StrCpy);
addOpt(LibFunc::stpcpy, &StpCpy);
addOpt(LibFunc::strncpy, &StrNCpy);
addOpt(LibFunc::strlen, &StrLen);
addOpt(LibFunc::strpbrk, &StrPBrk);
addOpt(LibFunc::strtol, &StrTo);
addOpt(LibFunc::strtod, &StrTo);
addOpt(LibFunc::strtof, &StrTo);
addOpt(LibFunc::strtoul, &StrTo);
addOpt(LibFunc::strtoll, &StrTo);
addOpt(LibFunc::strtold, &StrTo);
addOpt(LibFunc::strtoull, &StrTo);
addOpt(LibFunc::strspn, &StrSpn);
}
Value *LibCallSimplifierImpl::optimizeCall(CallInst *CI) {
@ -888,6 +889,11 @@ Value *LibCallSimplifierImpl::optimizeCall(CallInst *CI) {
return 0;
}
void LibCallSimplifierImpl::addOpt(LibFunc::Func F, LibCallOptimization* Opt) {
if (TLI->has(F))
Optimizations[TLI->getName(F)] = Opt;
}
LibCallSimplifier::LibCallSimplifier(const DataLayout *TD,
const TargetLibraryInfo *TLI) {
Impl = new LibCallSimplifierImpl(TD, TLI);