[PATCH] D115180: [X86] Enable v16i8/v32i8/v64i8 rotation on AVX512 targets

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon updated this revision to Diff 392735.
RKSimon added a comment.

Delay 512-bit vector splitting until after constant-splat early-out, which avoids the need for a lot of additional VPTERNLOG combines on non-AVX512VL targets.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D115180/new/

https://reviews.llvm.org/D115180

Files:
  llvm/lib/Target/X86/X86ISelLowering.cpp
  llvm/test/CodeGen/X86/min-legal-vector-width.ll
  llvm/test/CodeGen/X86/vector-fshl-rot-128.ll
  llvm/test/CodeGen/X86/vector-fshl-rot-256.ll
  llvm/test/CodeGen/X86/vector-fshl-rot-512.ll
  llvm/test/CodeGen/X86/vector-fshr-rot-128.ll
  llvm/test/CodeGen/X86/vector-fshr-rot-256.ll
  llvm/test/CodeGen/X86/vector-fshr-rot-512.ll
  llvm/test/CodeGen/X86/vector-rotate-128.ll
  llvm/test/CodeGen/X86/vector-rotate-256.ll
  llvm/test/CodeGen/X86/vector-rotate-512.ll

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