[llvm] [AMDGPU][True16][CodeGen] use vgpr16 for zext patterns (reopen #153894) (PR #154211)

[Brox Chen via llvm-commits]

broxigarchen wrote:

> > Hi @jplehr and @Kewen12, I've manually tried this patch with the hip docker and it succssfully pass the previous bad point. However I am not able to fully run the validation locally since I hit some other clang env issue when linking. Is there a way to run the hip test CI with this patch to validate it? Thanks!
> 
> Hi @broxigarchen Thanks for testing it with docker. Did you test with the HIP test-suite in the docker? The docker provides the same environment that our HIP bot runs with. If it passes the test-suite, there should be no problem with the bot.

 I just figured out that I missed to build the clang runtime. Confirmed that this is passing now

https://github.com/llvm/llvm-project/pull/154211