[PATCH] D44345: [X86] Add comments to the end of FMA3 instructions to make the operation clear

[Craig Topper via Phabricator via llvm-commits]

craig.topper created this revision.
craig.topper added reviewers: spatel, v_klochkov, RKSimon.

There are 3 different operand orders for FMA instructions so figuring out the exact operation being performed requires a lot of thought.

This patch adds a comment to the end of the assembly line to print the exact operation.

I think I've got all the instructions in here except the ones with builtin rounding.

I didn't update all tests, but I assume we can get them as we regenerate tests in the future.


https://reviews.llvm.org/D44345

Files:
  lib/Target/X86/InstPrinter/X86InstComments.cpp
  test/CodeGen/X86/avx512-intrinsics.ll
  test/CodeGen/X86/avx512vl-intrinsics.ll
  test/CodeGen/X86/fma-commute-x86.ll
  test/CodeGen/X86/fma-intrinsics-x86.ll

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