[PATCH] D135733: AMDGPU: Treat asm as a hazard for all register read-after-write hazards

[Jay Foad via Phabricator via llvm-commits]

foad added a comment.

In D135733#3855154 <https://reviews.llvm.org/D135733#3855154>, @foad wrote:

> Could you detect empty inline asms and do this only for the non-empty ones? In graphics we use empty inline asms as some kind of scheduling barrier. (Granted this is just a workaround for problems elsewhere, but I don't really want it broken or penalised just now.)

Sorry I was wrong about the empty strings. LLPC <https://github.com/GPUOpen-Drivers/llpc> typically uses "; %1" as the string - although we could change that.


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