[PATCH] D23583: [AArch64] Add feature has-fast-fma

[Evandro Menezes via llvm-commits]

evandro added a comment.

The latency for FMA in most targets seems to fall between the combination of the latencies for `FMUL` and `FADD`.  In spite of what the original author intended, I observed that the extra folds are worth it if FMA is as quick `FMUL` instead.


Repository:
  rL LLVM

https://reviews.llvm.org/D23583