diff options
Diffstat (limited to 'llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp')
| -rw-r--r-- | llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp b/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp index 83b310b..87d4b40 100644 --- a/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp +++ b/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp @@ -5037,11 +5037,9 @@ Instruction *InstCombinerImpl::foldICmpUsingKnownBits(ICmpInst &I) { llvm_unreachable("Unknown icmp opcode!"); case ICmpInst::ICMP_EQ: case ICmpInst::ICMP_NE: { - if (Op0Max.ult(Op1Min) || Op0Min.ugt(Op1Max)) { - return Pred == CmpInst::ICMP_EQ - ? replaceInstUsesWith(I, ConstantInt::getFalse(I.getType())) - : replaceInstUsesWith(I, ConstantInt::getTrue(I.getType())); - } + if (Op0Max.ult(Op1Min) || Op0Min.ugt(Op1Max)) + return replaceInstUsesWith( + I, ConstantInt::getBool(I.getType(), Pred == CmpInst::ICMP_NE)); // If all bits are known zero except for one, then we know at most one bit // is set. If the comparison is against zero, then this is a check to see if |