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Use stripPointerCasts.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61047 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2008-12-15 21:20:32 +00:00
parent 49b6d4ae9e
commit 344b41cfbd
1 changed files with 2 additions and 7 deletions
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9
lib/Transforms/IPO/GlobalOpt.cpp
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@ -1358,13 +1358,8 @@ static bool TryToOptimizeStoreOfMallocToGlobal(GlobalVariable *GV,
static bool OptimizeOnceStoredGlobal(GlobalVariable *GV, Value *StoredOnceVal,
Module::global_iterator &GVI,
TargetData &TD) {
if (BitCastInst *CI = dyn_cast<BitCastInst>(StoredOnceVal))
StoredOnceVal = CI->getOperand(0);
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);
}
// Ignore no-op GEPs and bitcasts.
StoredOnceVal = StoredOnceVal->stripPointerCasts();
// 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