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Fix a regression in InstCombine/xor.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15410 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -1343,11 +1343,11 @@ Instruction *InstCombiner::visitXor(BinaryOperator &I) {
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return ReplaceInstUsesWith(I, Op0I->getOperand(0));
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}
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// (A & C1)^(B & C2) -> (A & C1)|(B & C2) iff C1^C2 == 0
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// (A & C1)^(B & C2) -> (A & C1)|(B & C2) iff C1&C2 == 0
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Value *A, *B; ConstantInt *C1, *C2;
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if (match(Op0, m_And(m_Value(A), m_ConstantInt(C1))) &&
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match(Op1, m_And(m_Value(B), m_ConstantInt(C2))) &&
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ConstantExpr::getXor(C1, C2)->isNullValue())
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ConstantExpr::getAnd(C1, C2)->isNullValue())
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return BinaryOperator::createOr(Op0, Op1);
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// (setcc1 A, B) ^ (setcc2 A, B) --> (setcc3 A, B)
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