[all-commits] [llvm/llvm-project] 59b9e6: [X86] Update costs for truncates from less than 12...

[topperc via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 59b9e6fe7626da03b1146b0f5ad19753cc829de8
      https://github.com/llvm/llvm-project/commit/59b9e6fe7626da03b1146b0f5ad19753cc829de8
  Author: Craig Topper <craig.topper at intel.com>
  Date:   2020-04-28 (Tue, 28 Apr 2020)

  Changed paths:
    M llvm/lib/Target/X86/X86TargetTransformInfo.cpp
    M llvm/test/Analysis/CostModel/X86/min-legal-vector-width.ll
    M llvm/test/Analysis/CostModel/X86/trunc.ll

  Log Message:
  -----------
  [X86] Update costs for truncates from less than 128-bit vectors to vXi1 on pre-avx512 targets

vXi1 types are legalized by promoting, but the narrow vectors
are legalized by widening. This results in some truncates turning
into any_extends.