[PATCH] D40335: [WIP] X86-specific path: Implemented the fusing of MUL+SUBADD to FMSUBADD

[Dmitry Venikov via Phabricator via llvm-commits]

Quolyk created this revision.

This is my first attempt to contribute to llvm. I'm trying to implement this https://bugs.llvm.org/show_bug.cgi?id=30633. MUL+ADDSUB to FMADDSUB was implemented here https://reviews.llvm.org/D28087. I pretty much copy-pasted everything form that commit to support FMSUBADD and it's apparently not the best solution. I'm looking for help now.


https://reviews.llvm.org/D40335

Files:
  lib/Target/X86/X86ISelLowering.cpp
  lib/Target/X86/X86ISelLowering.h
  test/CodeGen/X86/fmsubadd-combine.ll

-------------- next part --------------
A non-text attachment was scrubbed...
Name: D40335.123884.patch
Type: text/x-patch
Size: 18728 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20171122/4f93981b/attachment.bin>