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Previously the transform was doing these two canonicalizations (x > y) ? x : y -> (x >= y) ? x : y (x < y) ? x : y -> (x <= y) ? x : y But those don't seem to be useful generally. And they actively pessimize the cases in PR47049. This patch limits it to (x > 0) ? x : 0 -> (x >= 0) ? x : 0 (x < -1) ? x : -1 -> (x <= -1) ? x : -1 These are the cases mentioned in the comments as the motivation for the canonicalization. These allow the CMOV to use the S flag from the compare thus improving opportunities to use a TEST or the flags from an arithmetic instruction.
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