diff options
Diffstat (limited to 'lib/Transforms/Scalar/DeadStoreElimination.cpp')
| -rw-r--r-- | lib/Transforms/Scalar/DeadStoreElimination.cpp | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/lib/Transforms/Scalar/DeadStoreElimination.cpp b/lib/Transforms/Scalar/DeadStoreElimination.cpp index f55d8b2..c10d236 100644 --- a/lib/Transforms/Scalar/DeadStoreElimination.cpp +++ b/lib/Transforms/Scalar/DeadStoreElimination.cpp @@ -89,7 +89,7 @@ bool DSE::runOnBasicBlock(BasicBlock &BB) { Instruction *Inst = BBI++; // If we find a store or a free, get its memory dependence. - if (!isa<StoreInst>(Inst) && !isa<FreeInst>(Inst) && !isFreeCall(Inst)) + if (!isa<StoreInst>(Inst) && !isFreeCall(Inst)) continue; // Don't molest volatile stores or do queries that will return "clobber". @@ -104,7 +104,7 @@ bool DSE::runOnBasicBlock(BasicBlock &BB) { if (InstDep.isNonLocal()) continue; // Handle frees whose dependencies are non-trivial. - if (isa<FreeInst>(Inst) || isFreeCall(Inst)) { + if (isFreeCall(Inst)) { MadeChange |= handleFreeWithNonTrivialDependency(Inst, InstDep); continue; } @@ -176,8 +176,7 @@ bool DSE::handleFreeWithNonTrivialDependency(Instruction *F, MemDepResult Dep) { Value *DepPointer = Dependency->getPointerOperand()->getUnderlyingObject(); // Check for aliasing. - Value* FreeVal = isa<FreeInst>(F) ? F->getOperand(0) : F->getOperand(1); - if (AA.alias(FreeVal, 1, DepPointer, 1) != + if (AA.alias(F->getOperand(1), 1, DepPointer, 1) != AliasAnalysis::MustAlias) return false; |