John Brawn c5a6392be3 [ValueTracking] Match select abs pattern when there's an sext involved ... When checking a select to see if it matches an abs, allow the true/false values to be a sign-extension of the comparison value instead of requiring that they're directly the comparison value, as all the comparison cares about is the sign of the value. This fixes a regression due to r333702, where we were no longer generating ctlz due to isKnownNonNegative failing to match such a pattern. Differential Revision: https://reviews.llvm.org/D47631 llvm-svn: 333927		2018-06-04 16:53:57 +00:00
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ctlz.ll	[ValueTracking] Match select abs pattern when there's an sext involved	2018-06-04 16:53:57 +00:00