[all-commits] [llvm/llvm-project] fe68b1: [MLIR][SCFToOpenMP] Fix crash when lowering vector...

[Aniket Singh via All-commits]

  Branch: refs/heads/release/22.x
  Home:   https://github.com/llvm/llvm-project
  Commit: fe68b17f46d470c2aa5223bb3cc4fec0d14801f9
      https://github.com/llvm/llvm-project/commit/fe68b17f46d470c2aa5223bb3cc4fec0d14801f9
  Author: Aniket Singh <122245575+Aniketsingh54 at users.noreply.github.com>
  Date:   2026-01-15 (Thu, 15 Jan 2026)

  Changed paths:
    M mlir/lib/Conversion/SCFToOpenMP/SCFToOpenMP.cpp
    A mlir/test/Conversion/SCFToOpenMP/vector-reduction.mlir

  Log Message:
  -----------
  [MLIR][SCFToOpenMP] Fix crash when lowering vector reductions (#173978)

This patch fixes a crash in the SCF to OpenMP conversion pass when
encountering scf.parallel with vector reductions.

- Extracts scalar element types for bitwidth calculations.
- Uses DenseElementsAttr for vector splat initializers.
- Bypasses llvm.atomicrmw for vector types (not supported in LLVM IR).

Fixes #173860

---------

Co-authored-by: Aniket Singh <amiket.singh.3200.00 at gmail.com>



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