diff options
| -rw-r--r-- | lib/Transforms/Scalar/InstructionCombining.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/Transforms/Scalar/InstructionCombining.cpp b/lib/Transforms/Scalar/InstructionCombining.cpp index 67b99c56e7..d31e7e8333 100644 --- a/lib/Transforms/Scalar/InstructionCombining.cpp +++ b/lib/Transforms/Scalar/InstructionCombining.cpp @@ -1996,6 +1996,11 @@ Instruction *InstCombiner::visitCastInst(CastInst &CI) { } } + // If this is a cast to bool, turn it into the appropriate setne instruction. + if (CI.getType() == Type::BoolTy) + return BinaryOperator::create(Instruction::SetNE, CI.getOperand(0), + Constant::getNullValue(CI.getOperand(0)->getType())); + // If casting the result of a getelementptr instruction with no offset, turn // this into a cast of the original pointer! // |