maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

Use stripPointerCasts. 

llvm-svn: 61047
This commit is contained in:
Chris Lattner 2008-12-15 21:20:32 +00:00
parent f0eb568021
commit 1c731fa86f
1 changed files with 2 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
llvm/lib/Transforms/IPO/GlobalOpt.cpp
View File

@ -1358,13 +1358,8 @@ static bool TryToOptimizeStoreOfMallocToGlobal(GlobalVariable *GV,
static bool OptimizeOnceStoredGlobal(GlobalVariable *GV, Value *StoredOnceVal, static bool OptimizeOnceStoredGlobal(GlobalVariable *GV, Value *StoredOnceVal,
Module::global_iterator &GVI, Module::global_iterator &GVI,
TargetData &TD) { TargetData &TD) {
if (BitCastInst *CI = dyn_cast<BitCastInst>(StoredOnceVal)) // Ignore no-op GEPs and bitcasts.
StoredOnceVal = CI->getOperand(0); StoredOnceVal = StoredOnceVal->stripPointerCasts();
else if (GetElementPtrInst *GEPI =dyn_cast<GetElementPtrInst>(StoredOnceVal)){
// "getelementptr Ptr, 0, 0, 0" is really just a cast.
if (GEPI->hasAllZeroIndices())
StoredOnceVal = GEPI->getOperand(0);
}
// If we are dealing with a pointer global that is initialized to null and // If we are dealing with a pointer global that is initialized to null and
// only has one (non-null) value stored into it, then we can optimize any // only has one (non-null) value stored into it, then we can optimize any