[llvm] [AMDGPU] Add another SIFoldOperands instance after shrink (PR #67878)

[Jay Foad via llvm-commits]

jayfoad wrote:

> > > I've just tested this on 10000 graphics shaders and it seems to make no difference at all. I tried gfx900 and gfx1100. Can anyone else from the graphics team confirm this?
> > 
> > 
> > I can confirm no difference on gfx1102
> 
> gfx11 is the same as gfx10, it just bails because of the VOP3 literal support. This is strange for gfx9. Do these shaders use -O2 or -O3?

I just use the default which is supposed to be -O2.

https://github.com/llvm/llvm-project/pull/67878