Noah Goldstein d65720652d [X86] Add inst fixup for unpckps -> unpckdq.
`unpckps` has the same performance as `unpckpd` (only port5) wereas
`unpckdq` can run on p15 on some newer architectures.

`unpckdq` is in the integer domain, so only do the transform if the
target has no bypass delay on shuffles (SKL+).

Reviewed By: RKSimon

Differential Revision: https://reviews.llvm.org/D147729
2023-04-10 00:17:00 -05:00
..
2023-04-03 16:57:50 +08:00