[PATCH] D42487: [X86][SSE] LowerBUILD_VECTORAsVariablePermute - add support for scaling index vectors

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon updated this revision to Diff 132392.
RKSimon added a comment.

With AVX512DQ tests - I've raised PR36191 as the failure to fold the broadcasts into the zmm for 'fake' ymm vpmullq is rather annoying


Repository:
  rL LLVM

https://reviews.llvm.org/D42487

Files:
  lib/Target/X86/X86ISelLowering.cpp
  test/CodeGen/X86/var-permute-128.ll
  test/CodeGen/X86/var-permute-256.ll

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