[PATCH] D48278: [SelectionDAG] Fold redundant masking operations of shifted value

[Diogo N. Sampaio via Phabricator via llvm-commits]

dnsampaio updated this revision to Diff 154598.
dnsampaio added a comment.

Added checks for shift opcodes as to early exit if not found.
Validate mask widths (although it would be a error in the code if they are of different).


https://reviews.llvm.org/D48278

Files:
  lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  test/CodeGen/AArch64/FoldRedundantShiftedMasking.ll
  test/CodeGen/ARM/FoldRedundantShiftedMasking.ll
  test/CodeGen/X86/pr32329.ll

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