georgia.kouveli fdb0f07887 [arm64] Use CMN for cmp(a,sub(0,b)) only when checking equality/inequality. ... We were previously incorrectly changing: sub r0, 0, r1 cmp r2, r0 b.cond <addr> to: cmn r2, r1 b.cond <addr> for all conditions. This is incorrect for conditions involving the C (carry) and V (overflow) flags, and in particular in the case where r1 = INT_MIN. The optimization is still safe to perform for Equal and NotEqual since they do not depend on the C and V flags. BUG= Review-Url: https://codereview.chromium.org/2318043002 Cr-Commit-Position: refs/heads/master@{#39246}		2016-09-07 12:43:00 +00:00
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instruction-selector-arm64-unittest.cc	[arm64] Use CMN for cmp(a,sub(0,b)) only when checking equality/inequality.	2016-09-07 12:43:00 +00:00