[PATCH] D62871: [Codegen] (X & (C l>>/<< Y)) ==/!= 0 --> ((X <</l>> Y) & C) ==/!= 0 fold

[Roman Lebedev via Phabricator via llvm-commits]

lebedev.ri updated this revision to Diff 203236.
lebedev.ri marked 4 inline comments as done.
lebedev.ri added a comment.

Disable non-beneficial folds.


Repository:
  rL LLVM

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D62871/new/

https://reviews.llvm.org/D62871

Files:
  include/llvm/CodeGen/TargetLowering.h
  lib/CodeGen/SelectionDAG/TargetLowering.cpp
  lib/Target/AArch64/AArch64ISelLowering.cpp
  lib/Target/AArch64/AArch64ISelLowering.h
  lib/Target/Hexagon/HexagonISelLowering.cpp
  lib/Target/Hexagon/HexagonISelLowering.h
  lib/Target/X86/X86ISelLowering.cpp
  lib/Target/X86/X86ISelLowering.h
  test/CodeGen/AArch64/hoist-and-by-const-from-lshr-in-eqcmp-zero.ll
  test/CodeGen/AArch64/hoist-and-by-const-from-shl-in-eqcmp-zero.ll
  test/CodeGen/AMDGPU/commute-shifts.ll
  test/CodeGen/ARM/hoist-and-by-const-from-lshr-in-eqcmp-zero.ll
  test/CodeGen/ARM/hoist-and-by-const-from-shl-in-eqcmp-zero.ll
  test/CodeGen/PowerPC/shift-cmp.ll
  test/CodeGen/X86/hoist-and-by-const-from-lshr-in-eqcmp-zero.ll
  test/CodeGen/X86/hoist-and-by-const-from-shl-in-eqcmp-zero.ll

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