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Implement InstCombine/cast.ll:test29
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28126 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -2640,6 +2640,19 @@ Instruction *InstCombiner::visitAnd(BinaryOperator &I) {
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}
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}
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// fold (and (cast A), (cast B)) -> (cast (and A, B))
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if (CastInst *Op0C = dyn_cast<CastInst>(Op0)) {
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if (CastInst *Op1C = dyn_cast<CastInst>(Op1))
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if (Op0C->getOperand(0)->getType() == Op1C->getOperand(0)->getType() &&
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Op0C->getOperand(0)->getType()->isIntegral()) {
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Instruction *NewOp = BinaryOperator::createAnd(Op0C->getOperand(0),
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Op1C->getOperand(0),
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I.getName());
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InsertNewInstBefore(NewOp, I);
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return new CastInst(NewOp, I.getType());
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}
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}
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return Changed ? &I : 0;
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}
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@ -2865,6 +2878,20 @@ Instruction *InstCombiner::visitOr(BinaryOperator &I) {
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}
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}
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}
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// fold (or (cast A), (cast B)) -> (cast (or A, B))
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if (CastInst *Op0C = dyn_cast<CastInst>(Op0)) {
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if (CastInst *Op1C = dyn_cast<CastInst>(Op1))
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if (Op0C->getOperand(0)->getType() == Op1C->getOperand(0)->getType() &&
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Op0C->getOperand(0)->getType()->isIntegral()) {
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Instruction *NewOp = BinaryOperator::createOr(Op0C->getOperand(0),
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Op1C->getOperand(0),
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I.getName());
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InsertNewInstBefore(NewOp, I);
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return new CastInst(NewOp, I.getType());
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}
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}
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return Changed ? &I : 0;
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}
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@ -3030,6 +3057,19 @@ Instruction *InstCombiner::visitXor(BinaryOperator &I) {
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if (Instruction *R = AssociativeOpt(I, FoldSetCCLogical(*this, RHS)))
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return R;
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// fold (xor (cast A), (cast B)) -> (cast (xor A, B))
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if (CastInst *Op0C = dyn_cast<CastInst>(Op0)) {
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if (CastInst *Op1C = dyn_cast<CastInst>(Op1))
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if (Op0C->getOperand(0)->getType() == Op1C->getOperand(0)->getType() &&
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Op0C->getOperand(0)->getType()->isIntegral()) {
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Instruction *NewOp = BinaryOperator::createXor(Op0C->getOperand(0),
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Op1C->getOperand(0),
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I.getName());
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InsertNewInstBefore(NewOp, I);
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return new CastInst(NewOp, I.getType());
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}
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}
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return Changed ? &I : 0;
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}
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