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4 Commits

Author SHA1 Message Date
Bjorn Pettersson
b280ee1dd7 [test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC 
Another step moving away from the deprecated syntax of specifying
pass pipeline in opt.

Differential Revision: https://reviews.llvm.org/D119080
 2022-02-07 14:26:58 +01:00
Nikita Popov
3b671022e4 [InstSimplify] Simplify comparison between zext(x) and sext(x) 
This is picking up a loose thread from D69006: We can simplify
(zext x) ule (sext x) and (zext x) sge (sext x) to true, with
various permutations. Oddly, SCEV knows about this identity,
but nothing on the IR level does.

Differential Revision: https://reviews.llvm.org/D83081
 2020-07-04 11:03:00 +02:00
Nikita Popov
93ccb8eb52 [InstSimplify] Add additional zext/sext comparison tests (NFC) 
Add vector variants, and negative tests where the operand does
not match.
 2020-07-04 11:03:00 +02:00
Nikita Popov
359345d609 [InstSimplify] Add test for sext/zext comparisons (NFC) 2020-07-02 22:21:59 +02:00