[PATCH] D27787: Don't combine a shuffle of two BUILD_VECTORs in general.

[Eli Friedman via Phabricator via llvm-commits]

efriedma retitled this revision from "Restrict some DAGCombines for SHUFFLE_VECTOR nodes." to "Don't combine a shuffle of two BUILD_VECTORs in general.".
efriedma updated the summary for this revision.
efriedma updated this revision to Diff 81517.
efriedma added a comment.

Split into multiple patches.


Repository:
  rL LLVM

https://reviews.llvm.org/D27787

Files:
  lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  test/CodeGen/AArch64/arm64-neon-copy.ll
  test/CodeGen/ARM/vtrn.ll
  test/CodeGen/ARM/vzip.ll
  test/CodeGen/X86/mmx-bitcast.ll
  test/CodeGen/X86/oddshuffles.ll
  test/CodeGen/X86/promote-vec3.ll
  test/CodeGen/X86/vec_insert-5.ll
  test/CodeGen/X86/vec_insert-mmx.ll
  test/CodeGen/X86/vector-shuffle-128-v16.ll
  test/CodeGen/X86/vector-shuffle-128-v8.ll

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