[PATCH] D146523: [AMDGPU]: Add new intrinsic llvm.amdgcn.convergent.copy

[Jay Foad via Phabricator via llvm-commits]

foad added a comment.

In D146523#4209735 <https://reviews.llvm.org/D146523#4209735>, @pravinjagtap wrote:

> In D146523#4209684 <https://reviews.llvm.org/D146523#4209684>, @foad wrote:
>
>> What does this do and what is it for?
>
> This convergent copy intrinsic will acts here as a form of barrier which makes sure that all the active lanes  of VGPR (i.e. result of intrinsic) is computed before its use.

Can you give an example?


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https://reviews.llvm.org/D146523