diff options
| -rw-r--r-- | lib/Transforms/Scalar/InstructionCombining.cpp | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/lib/Transforms/Scalar/InstructionCombining.cpp b/lib/Transforms/Scalar/InstructionCombining.cpp index e627392fb4..9d540b374a 100644 --- a/lib/Transforms/Scalar/InstructionCombining.cpp +++ b/lib/Transforms/Scalar/InstructionCombining.cpp @@ -1582,14 +1582,10 @@ Instruction *InstCombiner::visitSetCondInst(BinaryOperator &I) { return ReplaceInstUsesWith(I, ConstantBool::get(isSetNE)); // If we have ((X & C) == C), turn it into ((X & C) != 0). - if (CI == BOC) { - // Don't infinite loop if C is null and the & isn't folded yet. - if (CI->isNullValue()) - return ReplaceInstUsesWith(I, ConstantBool::get(!isSetNE)); + if (CI == BOC && isOneBitSet(CI)) return new SetCondInst(isSetNE ? Instruction::SetEQ : Instruction::SetNE, Op0, Constant::getNullValue(CI->getType())); - } // Replace (and X, (1 << size(X)-1) != 0) with x < 0, converting X // to be a signed value as appropriate. |