diff options
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/InstructionCombining.cpp | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/llvm/lib/Transforms/Scalar/InstructionCombining.cpp b/llvm/lib/Transforms/Scalar/InstructionCombining.cpp index 8f094b747c1..5b50ab56a3e 100644 --- a/llvm/lib/Transforms/Scalar/InstructionCombining.cpp +++ b/llvm/lib/Transforms/Scalar/InstructionCombining.cpp @@ -11483,6 +11483,7 @@ Instruction *InstCombiner::visitStoreInst(StoreInst &SI) { BasicBlock::iterator BBI = &SI; for (unsigned ScanInsts = 6; BBI != SI.getParent()->begin() && ScanInsts; --ScanInsts) { + --BBI; // Don't count debug info directives, lest they affect codegen. // Likewise, we skip bitcasts that feed into a llvm.dbg.declare; these are // not present when debugging is off. @@ -11490,10 +11491,8 @@ Instruction *InstCombiner::visitStoreInst(StoreInst &SI) { (isa<BitCastInst>(BBI) && BBI->hasOneUse() && isa<DbgDeclareInst>(BBI->use_begin()))) { ScanInsts++; - --BBI; continue; } - --BBI; if (StoreInst *PrevSI = dyn_cast<StoreInst>(BBI)) { // Prev store isn't volatile, and stores to the same location? |
