[PATCH] D142138: [OpenMP] Clean up AMD handling for `-fopenmp-targets=amdgcn` arch inference

[Matt Arsenault via Phabricator via cfe-commits]

arsenm added a comment.

In D142138#4066420 <https://reviews.llvm.org/D142138#4066420>, @JonChesterfield wrote:

> @arsenm as above, mcpu != march important? llc takes a different one to clang iirc

I don't know what the difference would be


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https://reviews.llvm.org/D142138