[PATCH] D83493: [WebAssembly][NFC] Simplify vector shift lowering and add tests

[Thomas Lively via Phabricator via llvm-commits]

tlively created this revision.
tlively added reviewers: aheejin, dschuff.
Herald added subscribers: llvm-commits, sunfish, hiraditya, jgravelle-google, sbc100.
Herald added a project: LLVM.

This patch builds on 0d7286a652 <https://reviews.llvm.org/rG0d7286a652371bca460357348f3b4828cd4ca214> by simplifying the code for detecting
splat values and adding new tests demonstrating the lowering of
splatted absolute value shift amounts. The lowering is very bad right
now, but subsequent patches will improve it considerably. The tests
will be useful for evaluating the improvements in those patches.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D83493

Files:
  llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp
  llvm/test/CodeGen/WebAssembly/simd-shift-complex-splats.ll

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