[PATCH] D81013: [InstCombine] move vector select ahead of select-shuffle

[Steven Johnson via Phabricator via llvm-commits]

srj added a comment.

This seems to have injected breakages into Halide when used for x86-64 targets with 'narrow' SIMD (eg., using only SSE2 or SSE4.1); many of our tests now fail in that configuration with variations of

  /path/tollvm-project/llvm/lib/IR/Instructions.cpp:2049: bool isSingleSourceMaskImpl(llvm::ArrayRef<int>, int): Assertion `Mask[i] >= 0 && Mask[i] < (NumOpElts * 2) && "Out-of-bounds shuffle mask element"' failed.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D81013/new/

https://reviews.llvm.org/D81013