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Skip ptr-to-ptr bitcasts when counting in another case.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66000 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dale Johannesen 2009-03-04 02:06:53 +00:00
parent cdb16aa5ab
commit d9c05d7711
1 changed files with 4 additions and 4 deletions
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8
lib/Transforms/Utils/BasicBlockUtils.cpp
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@ -477,10 +477,10 @@ Value *llvm::FindAvailableLoadedValue(Value *Ptr, BasicBlock *ScanBB,
Instruction *Inst = --ScanFrom; Instruction *Inst = --ScanFrom;
if (isa<DbgInfoIntrinsic>(Inst)) if (isa<DbgInfoIntrinsic>(Inst))
continue; continue;
// Likewise, we skip bitcasts that feed into a llvm.dbg.declare; these are // We skip pointer-to-pointer bitcasts, which are NOPs.
// not present when debugging is off. // It is necessary for correctness to skip those that feed into a
if (isa<BitCastInst>(Inst) && Inst->hasOneUse() && // llvm.dbg.declare, as these are not present when debugging is off.
isa<DbgDeclareInst>(Inst->use_begin())) if (isa<BitCastInst>(Inst) && isa<PointerType>(Inst->getType()))
continue; continue;
// Restore ScanFrom to expected value in case next test succeeds // Restore ScanFrom to expected value in case next test succeeds