[all-commits] [llvm/llvm-project] 3538ee: [CostModel][X86] Improve AVX1/AVX2 v16i32->v16i16/...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 3538ee763d13a26515a224ddeb3a51a5af143e38
      https://github.com/llvm/llvm-project/commit/3538ee763d13a26515a224ddeb3a51a5af143e38
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2021-09-26 (Sun, 26 Sep 2021)

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

  Log Message:
  -----------
  [CostModel][X86] Improve AVX1/AVX2 v16i32->v16i16/v16i8 truncation costs (PR51972)

Based off worst case btver2 (AVX1) and haswell (AVX2) llvm-mca reports