[PATCH] D153544: [AMDGPU] Use V_FMA_MIX* more often

[Mateja Marjanovic via Phabricator via llvm-commits]

matejam added a comment.

Instead of writing patterns that select fma/mad_mix*, write combiners for sdag and global isel that will transform
fptrunc (fmul a, b) into fptrunc (fma a, b, 0), which will later be selected into v_fma/mad_mix*.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D153544/new/

https://reviews.llvm.org/D153544