[all-commits] [llvm/llvm-project] 65aee7: [LV] Bail out if loop nest contains non-widenable ...

[Florian Hahn via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 65aee7abaeca14516a739148ad4488317b3785a2
      https://github.com/llvm/llvm-project/commit/65aee7abaeca14516a739148ad4488317b3785a2
  Author: Florian Hahn <flo at fhahn.com>
  Date:   2026-10-01 (Thu, 01 Oct 2026)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/LoopVectorizationLegality.cpp
    A llvm/test/Transforms/LoopVectorize/outer-loop-legality-remarks.ll
    A llvm/test/Transforms/LoopVectorize/outer-loop-unvectorizable-types.ll

  Log Message:
  -----------
  [LV] Bail out if loop nest contains non-widenable types. (#226463)

Currently all instructions are widened during outer-loop vectorization.

That requires the result types of all instructions to be widen-able.
Update canVectorizeOuterLoop to check the types of all instructions, via
a shared helper.

The newly added tests crash w/o the extra checks.

PR: https://github.com/llvm/llvm-project/pull/226463



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