Austin Kerbow 8d0c34fd4f [AMDGPU] Omit unnecessary waitcnt before barriers ...

It is not necessary to wait for all outstanding memory operations before
barriers on hardware that can back off of the barrier in the event of an
exception when traps are enabled. Add a new subtarget feature which
tracks which HW has this ability.

Reviewed By: #amdgpu, rampitec

Differential Revision: https://reviews.llvm.org/D120544

2022-03-07 08:23:53 -08:00

9.3 KiB

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