[llvm] [AMDGPU] Copy Defs and Uses from Pseudo to Real Instructions (PR #93004)

[Jay Foad via llvm-commits]

jayfoad wrote:

No strong objections from me but a couple of questions:

Is there any in-tree code that relies on implicit operands on Reals? Are there any in-tree tests? What's to stop this bitrotting?

Does this actually change the behaviour of the compiler so that it adds extra operands to Reals in memory (either during codegen or assembly or disassembly)? Or does it jsut change the contents of the MCInstrDesc tables? I am wondering if there is any possible performance impact.

https://github.com/llvm/llvm-project/pull/93004