[all-commits] [llvm/llvm-project] 0ff528: [GlobalISel] Treat shift amounts as unsigned in `m...

[Antonio Frighetto via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 0ff5281c947a56bf81205c4758f713aacd006a2f
      https://github.com/llvm/llvm-project/commit/0ff5281c947a56bf81205c4758f713aacd006a2f
  Author: Antonio Frighetto <me at antoniofrighetto.com>
  Date:   2023-11-24 (Fri, 24 Nov 2023)

  Changed paths:
    M llvm/lib/CodeGen/GlobalISel/CombinerHelper.cpp
    M llvm/test/CodeGen/AArch64/GlobalISel/prelegalizercombiner-trivial-arith.mir

  Log Message:
  -----------
  [GlobalISel] Treat shift amounts as unsigned in `matchShiftImmedChain`

A miscompilation issue in the GISel pre-legalization
phase has been addressed with improved routines.

Fixes: https://github.com/llvm/llvm-project/issues/71440.