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added all flavors of zap for anding
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21276 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -1692,6 +1692,26 @@ unsigned ISel::SelectExpr(SDOperand N) {
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}
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}
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//Fall through
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//Fall through
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case ISD::AND:
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case ISD::AND:
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//handle zap
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if (opcode == ISD::AND && N.getOperand(1).getOpcode() == ISD::Constant)
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{
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uint64_t k = cast<ConstantSDNode>(N.getOperand(1))->getValue();
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unsigned int build = 0;
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for(int i = 0; i < 8; ++i)
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{
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if (k & 0xFF == 0xFF)
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build |= 1 << i;
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else if (k & 0xFF != 0)
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{ build = 0; break; }
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k >>= 8;
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}
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if (build)
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{
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Tmp1 = SelectExpr(N.getOperand(0));
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BuildMI(BB, Alpha::ZAPNOTi, 2, Result).addReg(Tmp1).addImm(build);
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return Result;
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}
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}
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case ISD::OR:
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case ISD::OR:
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//Check operand(0) == Not
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//Check operand(0) == Not
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if (N.getOperand(0).getOpcode() == ISD::XOR &&
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if (N.getOperand(0).getOpcode() == ISD::XOR &&
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