diff options
Diffstat (limited to 'lib/Transforms/InstCombine/InstCombineAndOrXor.cpp')
| -rw-r--r-- | lib/Transforms/InstCombine/InstCombineAndOrXor.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp b/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp index ab75318eaa..fac035e7ef 100644 --- a/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp +++ b/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp @@ -1528,6 +1528,8 @@ Value *InstCombiner::FoldOrOfICmps(ICmpInst *LHS, ICmpInst *RHS) { if (LHS->getOperand(0) == RHS->getOperand(0)) { // if LHSCst and RHSCst differ only by one bit: // (A == C1 || A == C2) -> (A & ~(C1 ^ C2)) == C1 + assert(LHSCst->getValue().ule(LHSCst->getValue())); + APInt Xor = LHSCst->getValue() ^ RHSCst->getValue(); if (Xor.isPowerOf2()) { Value *NegCst = Builder->getInt(~Xor); |