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Fix InstCombine/2007-03-31-InfiniteLoop.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35536 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -4083,8 +4083,10 @@ Instruction *InstCombiner::visitXor(BinaryOperator &I) {
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else if (Op0 == B) // A^(B^A) == B
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return ReplaceInstUsesWith(I, A);
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} else if (match(Op1I, m_And(m_Value(A), m_Value(B))) && Op1I->hasOneUse()){
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if (A == Op0) // A^(A&B) -> A^(B&A)
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if (A == Op0) { // A^(A&B) -> A^(B&A)
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Op1I->swapOperands();
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std::swap(A, B);
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}
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if (B == Op0) { // A^(B&A) -> (B&A)^A
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I.swapOperands(); // Simplified below.
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std::swap(Op0, Op1);
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