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813aed1edd
This catches some cases. There are probably ways to improve this. I tried doing it as a combine on the setcc, but that broke some cases involving flag reuse in place of test. I renamed the isX86CCUnsigned to isX86CCSigned and flipped its polarity to make it consistent with the similar functions for ISD::SETCC. This avoids calling EQ/NE as being signed or unsigned. Fixes PR43823. Differential Revision: https://reviews.llvm.org/D69499
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