[PATCH] D154528: [AMDGPU][GlobalISel] Generate fast fp64-to-fp16 conversions in unsafe mode.

[Jay Foad via Phabricator via llvm-commits]

foad added a comment.

I think this should be implemented by legalizing `(f16 fptrunc (f64 x))` to `(f16 fptrunc (f32 fptrunc (f64 x)))` in the unsafe case. There should be no need for extra isel patterns.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D154528/new/

https://reviews.llvm.org/D154528