[PATCH] D30551: [AMDGPU] Add builtin functions readlane ds_permute mov_dpp

[Matt Arsenault via Phabricator via cfe-commits]

arsenm added a comment.

In https://reviews.llvm.org/D30551#691149, @b-sumner wrote:

> mov_dpp should be under the VI+ comment


Also should be made to use TARGET_BUILTIN and dependent on dpp feature


https://reviews.llvm.org/D30551