diff options
Diffstat (limited to 'llvm/lib/Transforms/Utils/LoopUnroll.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Utils/LoopUnroll.cpp | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/llvm/lib/Transforms/Utils/LoopUnroll.cpp b/llvm/lib/Transforms/Utils/LoopUnroll.cpp index a91bf7b..ce46392 100644 --- a/llvm/lib/Transforms/Utils/LoopUnroll.cpp +++ b/llvm/lib/Transforms/Utils/LoopUnroll.cpp @@ -224,13 +224,12 @@ void llvm::simplifyLoopAfterUnroll(Loop *L, bool SimplifyIVs, LoopInfo *LI, const DataLayout &DL = L->getHeader()->getModule()->getDataLayout(); SmallVector<WeakTrackingVH, 16> DeadInsts; for (BasicBlock *BB : L->getBlocks()) { - for (BasicBlock::iterator I = BB->begin(), E = BB->end(); I != E;) { - Instruction *Inst = &*I++; - if (Value *V = SimplifyInstruction(Inst, {DL, nullptr, DT, AC})) - if (LI->replacementPreservesLCSSAForm(Inst, V)) - Inst->replaceAllUsesWith(V); - if (isInstructionTriviallyDead(Inst)) - DeadInsts.emplace_back(Inst); + for (Instruction &Inst : llvm::make_early_inc_range(*BB)) { + if (Value *V = SimplifyInstruction(&Inst, {DL, nullptr, DT, AC})) + if (LI->replacementPreservesLCSSAForm(&Inst, V)) + Inst.replaceAllUsesWith(V); + if (isInstructionTriviallyDead(&Inst)) + DeadInsts.emplace_back(&Inst); } // We can't do recursive deletion until we're done iterating, as we might // have a phi which (potentially indirectly) uses instructions later in |