Sanjay Patel 3a126134d3 [InstCombine] remove casts from splat-a-bit pattern ...

https://alive2.llvm.org/ce/z/_AivbM

This case seems clear since we can reduce instruction count
and avoid an intermediate type change, but we might want to
use mask-and-compare for other sequences.

Currently, we can generate more instructions on some related
patterns by trying to use bit-hacks instead of mask+cmp, so
something is not behaving as expected.

2021-09-12 09:18:14 -04:00

115 KiB

Raw Blame History

View Raw