[all-commits] [llvm/llvm-project] f5df5c: Recommit "[InstCombine] Negator: -(X << C) --> X...

[Roman Lebedev via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: f5df5cd5586ae9cfb2d9e53704dfc76f47aff149
      https://github.com/llvm/llvm-project/commit/f5df5cd5586ae9cfb2d9e53704dfc76f47aff149
  Author: Roman Lebedev <lebedev.ri at gmail.com>
  Date:   2020-08-05 (Wed, 05 Aug 2020)

  Changed paths:
    M llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp
    M llvm/test/CodeGen/AMDGPU/reqd-work-group-size.ll
    M llvm/test/Transforms/InstCombine/icmp.ll
    M llvm/test/Transforms/InstCombine/sub-gep.ll
    M llvm/test/Transforms/InstCombine/sub-of-negatible.ll
    M llvm/test/Transforms/InstCombine/sub.ll

  Log Message:
  -----------
  Recommit "[InstCombine] Negator: -(X << C)  -->  X * (-1 << C)"

This reverts commit ac70b37a00dc02bd8923e0a4602d26be4581c570
which reverted commit 8aeb2fe13a4100b4c2e78d6ef75119304100cb1f
because codegen tests got broken and i needed time to investigate.

This shows some regressions in tests, but they are all around GEP's,
so i'm not really sure how important those are.

https://rise4fun.com/Alive/1Gn