[llvm] [AMDGPU] Rework GFX11 VALU Mask Write Hazard (PR #138663)

[Carl Ritson via llvm-commits]

perlfu wrote:

Testing indicates in general ISA performance should be unaffected by this change.
Compile time is increased by ~0.9%.

https://github.com/llvm/llvm-project/pull/138663