[PATCH] D119911: AMDGPU: Always reserve VGPR for AGPR copies on gfx908

Matt Arsenault via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Wed Feb 16 15:10:31 PST 2022


arsenm added a comment.

In D119911#3326483 <https://reviews.llvm.org/D119911#3326483>, @rampitec wrote:

> What will happen to a very small kernel which could use 24 vgprs or less? Will it still use 24 vgprs and have occupancy 10?

No, it will still use v32. I haven't been able to construct a testcase where this would happen that can fit in so few registers


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