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<div dir="ltr" >I believe I've found a bug in CodeGenMapTable.cpp.emitEnums(). I'm developing an out-of-tree backend and I was getting an error on a tablegen header for a duplicate enum value. emitEnums() was not properly deleting duplicate entries, but does with the attached the patch. Apparently none of the in-tree targets have enough InstrMapping's to trigger this bug, but my backend defines many.</div>
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<div dir="ltr" >I don't think there is a way to provide a test case for this without providing a whole new backend, so hopefully we can agree that it's not necessary. I've confirmed that all default targets still build with this patch applied.</div>
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<div dir="ltr" >Tyler</div>
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