[PATCH] D123343: [AMDGPU] Refactor LDS alignment checks.

[Stanislav Mekhanoshin via Phabricator via llvm-commits]

rampitec added a comment.

I am not sure we really want to tell truth about the 'Fast' here. If we tell that DS read misaligned by 1 byte is slow vectorizer will not combine 2 of them and we will get 2 separate ds_read_b32 instead of ds_read2_b32. It is slow, but the ds_read2_b32 is still faster than 2 separate instructions equally misaligned. That is what happens then: https://reviews.llvm.org/differential/diff/421361/


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  https://reviews.llvm.org/D123343/new/

https://reviews.llvm.org/D123343