[llvm] [AMDGPU] misched: avoid subregister dependencies (PR #140255)

[Jay Foad via llvm-commits]

jayfoad wrote:

> But aren't the true 16 instructions dedicated instructions?

No. True16 is just a compiler mode switch that affects how we do register allocation. The hardware instructions are identical - the hardware does not know or care whether the compiler ran in true16 mode or not.

https://github.com/llvm/llvm-project/pull/140255