[PATCH] D47330: [DAGCombiner] match vector compare and select sizes with extload operand (PR37427)

[Sanjay Patel via Phabricator via llvm-commits]

spatel updated this revision to Diff 148465.
spatel added a comment.

Patch updated:
Use isLoadExtLegalOrCustom() to check if the load is allowed. This means less diffs for AVX1 because it has a smaller set of extending loads than AVX2.

I need to step back through some of these tests and see if the earlier rev of the patch was miscompiling or just producing weird sequences.


https://reviews.llvm.org/D47330

Files:
  lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  test/CodeGen/X86/vsel-cmp-load.ll

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