[PATCH] D39604: [CodeGen] DAG combine AND nodes to load leaves

[Sam Parker via Phabricator via llvm-commits]

samparker created this revision.
Herald added a subscriber: javed.absar.

Search from AND nodes to find whether they can be propagated back to loads, so that the AND and load can be combined into a narrow load. We search through OR, XOR and other AND nodes and all the leaves are required to be loads or constants.


https://reviews.llvm.org/D39604

Files:
  lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  test/CodeGen/ARM/and-load-combine.ll

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