[all-commits] [llvm/llvm-project] e9c56a: [GlobalISel] Fix segment size when narrowing G_INS...

[Alex MacLean via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: e9c56af6e91289a9be5604c74309638d685999be
      https://github.com/llvm/llvm-project/commit/e9c56af6e91289a9be5604c74309638d685999be
  Author: Alex MacLean <amaclean at nvidia.com>
  Date:   2026-09-24 (Thu, 24 Sep 2026)

  Changed paths:
    M llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
    M llvm/unittests/CodeGen/GlobalISel/LegalizerHelperTest.cpp

  Log Message:
  -----------
  [GlobalISel] Fix segment size when narrowing G_INSERT (#226275)

When an inserted value starts inside a destination piece, bound the
overlap by the size of the inserted value. Including the offset from the
start of the piece can produce an extract wider than its source.

---------

Co-authored-by: Hongyu Chen <hongchen at nvidia.com>



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