[llvm] [AMDGPU]: Accept constant zero bytes in v_perm OrCombine (PR #66533)

[Jeffrey Byrnes via llvm-commits]

jrbyrnes wrote:

> Instead of rebasing, you should push new commits and merge commits. I have no idea what was in the previous version now

I see how that could make things harder.. noted.

Technically, there is a roundabout way to get this info:

 jrbyrnes force-pushed the AcceptConstZeroRebase0 branch from d083871 to 0b201d6  

Clicking the "Compare" button on GUI

https://github.com/llvm/llvm-project/compare/d083871ace24ad3fd27631a3f2c15cb77802b5f4..0b201d6ffcb003716cd7858011cf302c384a93e9

Or if you prefer to use CLI and have a local branch up-to-date with this:

git diff d083871 0b201d6

But yes, I do understand this is not ideal and is more work on the reviewer.

FYI, the new / unreviewed changes are inclusion of: `bothAre8Bit` and `IsGFX9Plus` (of which, the latter is removed in the latest version).


https://github.com/llvm/llvm-project/pull/66533