diff options
Diffstat (limited to 'llvm/lib/Transforms/InstCombine/InstructionCombining.cpp')
| -rw-r--r-- | llvm/lib/Transforms/InstCombine/InstructionCombining.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp b/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp index 9e8b5774517..1fe036b5fbb 100644 --- a/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp +++ b/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp @@ -2060,7 +2060,8 @@ Instruction *InstCombiner::visitSwitchInst(SwitchInst &SI) { // x86 generates redundant zero-extenstion instructions if the operand is // truncated to i8 or i16. bool TruncCond = false; - if (BitWidth > NewWidth && NewWidth >= DL.getLargestLegalIntTypeSize()) { + if (NewWidth > 0 && BitWidth > NewWidth && + NewWidth >= DL.getLargestLegalIntTypeSize()) { TruncCond = true; IntegerType *Ty = IntegerType::get(SI.getContext(), NewWidth); Builder->SetInsertPoint(&SI); |
