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Hi All,</div>
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I have a question about 'outs' and 'PredicateOperand' on TableGen. Let's see simple TableGen example.</div>
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def pred : PredicateOperand<OtherVT, (ops ..)>;</div>
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def test_cmp : TestInst<(outs pred:$dst0), ... >;<br>
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...</div>
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Above definitions cause TableGen crash. It seems below code causes the crash.</div>
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On utils/TableGen/CodeGenDAGPatterns.cpp</div>
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static unsigned GetNumNodeResults(Record *Operator, CodeGenDAGPatterns &CDP) {<br>
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<span> // Subtract any defaulted outputs.<br>
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<div> for (unsigned i = 0; i != InstInfo.Operands.NumDefs; ++i) {<br>
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<div> Record *OperandNode = InstInfo.Operands[i].Rec;<br>
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<div> if (OperandNode->isSubClassOf("OperandWithDefaultOps") && ==> I think it checks 'PredicateOperand'.</div>
<div> !CDP.getDefaultOperand(OperandNode).DefaultOps.empty())<br>
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<div> --NumDefsToAdd;<br>
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<span> }</span><br>
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>From above code, I guess we can not use 'PredicateOperand' on 'outs'. <span style="font-family: Calibri, Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255); display: inline !important">
Is it one of TableGen's rule? I was not able to find the related rules... </span>In my case, the output of compare instruction is in predicate register rather than status register and it is used for predication of instructions. If anyone knows about it or I
missed something, please let me know.</div>
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Thanks</div>
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<div style="margin:0px; padding:0px; color:rgb(23,43,77); font-size:14px"><b>JinGu Kang</b></div>
<div style="margin:0px; padding:0px; color:rgb(23,43,77); font-size:14px"><b>Software Engineer</b><br>
Codeplay Software Ltd<br>
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