[PATCH] D42258: [X86][SSE] Aggressively use PMADDWD for v4i32 multiplies with 17 or more leading zeros

Simon Pilgrim via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Fri Jan 19 04:20:55 PST 2018


RKSimon updated this revision to Diff 130585.
RKSimon added a comment.

Merged outer two ifs, added SSE2 check.

We also now have KNL slow-pmulld.ll tests.


Repository:
  rL LLVM

https://reviews.llvm.org/D42258

Files:
  lib/Target/X86/X86ISelLowering.cpp
  test/CodeGen/X86/promote.ll
  test/CodeGen/X86/shrink_vmul.ll
  test/CodeGen/X86/slow-pmulld.ll

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