[PATCH] D58053: [X86][AVX] EltsFromConsecutiveLoads - Add BROADCAST lowering support

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon created this revision.
RKSimon added reviewers: craig.topper, spatel, niravd.
Herald added a project: LLVM.

This patch adds scalar/subvector BROADCAST handling to EltsFromConsecutiveLoads.

It mainly shows codegen changes to 32-bit code which failed to handle i64 loads, although 64-bit code is also using this new path to more efficiently combine to a broadcast load.

@craig.topper I was trying to see whether I could get AVX512 i64 broadcast folds to work for 32-bit targets but didn't have much success - any ideas? I guess i686 is not that high priority....


Repository:
  rL LLVM

https://reviews.llvm.org/D58053

Files:
  lib/Target/X86/X86ISelLowering.cpp
  test/CodeGen/X86/avx-vbroadcast.ll
  test/CodeGen/X86/avx2-vbroadcast.ll
  test/CodeGen/X86/avx512-intrinsics-upgrade.ll
  test/CodeGen/X86/avx512dqvl-intrinsics-upgrade.ll
  test/CodeGen/X86/avx512ifma-intrinsics-upgrade.ll
  test/CodeGen/X86/avx512ifma-intrinsics.ll
  test/CodeGen/X86/avx512vl-intrinsics-upgrade.ll
  test/CodeGen/X86/i64-mem-copy.ll
  test/CodeGen/X86/insertelement-shuffle.ll
  test/CodeGen/X86/vector-shuffle-combining-xop.ll

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