[PATCH] D41794: [X86] Improve AVX1 shuffle lowering for v8f32 shuffles where the low half comes from V1 and the high half comes from V2 and the halves do the same operation

[Craig Topper via Phabricator via llvm-commits]

craig.topper updated this revision to Diff 128837.
craig.topper added a comment.

Add support for v4f64 as well.

Without AVX2, integer types are cast to FP so this supports v8i32/v4i64 without AVX2 as is.


https://reviews.llvm.org/D41794

Files:
  lib/Target/X86/X86ISelLowering.cpp
  test/CodeGen/X86/vector-shuffle-256-v4.ll
  test/CodeGen/X86/vector-shuffle-256-v8.ll

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