diff options
Diffstat (limited to 'lib/Transforms/Utils')
| -rw-r--r-- | lib/Transforms/Utils/BasicBlockUtils.cpp | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/lib/Transforms/Utils/BasicBlockUtils.cpp b/lib/Transforms/Utils/BasicBlockUtils.cpp index fd7b7da76f..97460bf1ad 100644 --- a/lib/Transforms/Utils/BasicBlockUtils.cpp +++ b/lib/Transforms/Utils/BasicBlockUtils.cpp @@ -477,10 +477,10 @@ Value *llvm::FindAvailableLoadedValue(Value *Ptr, BasicBlock *ScanBB, Instruction *Inst = --ScanFrom; if (isa<DbgInfoIntrinsic>(Inst)) continue; - // Likewise, we skip bitcasts that feed into a llvm.dbg.declare; these are - // not present when debugging is off. - if (isa<BitCastInst>(Inst) && Inst->hasOneUse() && - isa<DbgDeclareInst>(Inst->use_begin())) + // We skip pointer-to-pointer bitcasts, which are NOPs. + // It is necessary for correctness to skip those that feed into a + // llvm.dbg.declare, as these are not present when debugging is off. + if (isa<BitCastInst>(Inst) && isa<PointerType>(Inst->getType())) continue; // Restore ScanFrom to expected value in case next test succeeds |