[PATCH] D56011: [x86] lower extracted fadd/fsub to horizontal vector math

[Sanjay Patel via Phabricator via llvm-commits]

spatel updated this revision to Diff 180247.
spatel added a comment.

Patch updated:
Updated cost model changes - for SSE2 (P4 <https://reviews.llvm.org/P4>), the default 2-cycle throughput cost matches Agner.
For SSE1 (P3 <https://reviews.llvm.org/P3>), the default 2-cycle throughput cost does not match a P3 <https://reviews.llvm.org/P3> implementation (but hopefully nobody cares at this point).


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D56011/new/

https://reviews.llvm.org/D56011

Files:
  lib/Target/X86/X86ISelLowering.cpp
  lib/Target/X86/X86TargetTransformInfo.cpp
  test/CodeGen/X86/haddsub-undef.ll
  test/CodeGen/X86/haddsub.ll

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