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

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

dnsampaio updated this revision to Diff 154125.
dnsampaio marked 6 inline comments as done.
dnsampaio retitled this revision from "[SelectionDAG]Reduce masked data movement chains and memory access widths pt2" to "[SelectionDAG] Fold redundant masking operations of shifted value".
dnsampaio edited the summary of this revision.
dnsampaio added a comment.

Replaced tests as to be not dependent in the load width reduction.
Added 1 positive test per case, and 2 negative tests, one where one mask is not a constant and other the shifted amount is not constant.


https://reviews.llvm.org/D48278

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

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