Doing this late so we will prefer to fold the AND into a masked comparison first. That can be better for the live range of the mask register.
Details
Details
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Diff Detail
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Differential D56246
[X86] Add post-isel peephole to fold KAND+KORTEST into KTEST if only the zero flag is used. craig.topper on Jan 2 2019, 11:23 PM. Authored by
Details Doing this late so we will prefer to fold the AND into a masked comparison first. That can be better for the live range of the mask register.
Diff Detail
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