[PATCH] D60403: [CostModel][X86] Add bool anyof/allof reduction costs

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon created this revision.
RKSimon added reviewers: ABataev, craig.topper, spatel.
Herald added a project: LLVM.

On pre-AVX512 targets we can use MOVMSK to extract reduced boolean results. This is properly optimized, annoyingly AVX512 isn't and produces code that is almost as bad as the (unchanged) costs suggest......


Repository:
  rL LLVM

https://reviews.llvm.org/D60403

Files:
  lib/Target/X86/X86TargetTransformInfo.cpp
  test/Analysis/CostModel/X86/reduce-and-widen.ll
  test/Analysis/CostModel/X86/reduce-and.ll
  test/Analysis/CostModel/X86/reduce-or-widen.ll
  test/Analysis/CostModel/X86/reduce-or.ll

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