[all-commits] [llvm/llvm-project] 792667: [GlobalISel] Check if ShiftAmt is greater then siz...

[Mirko Brkušanin via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 792667daddecd90c5ce2e2936dc9116b811c3bb0
      https://github.com/llvm/llvm-project/commit/792667daddecd90c5ce2e2936dc9116b811c3bb0
  Author: Mirko Brkusanin <Mirko.Brkusanin at amd.com>
  Date:   2023-06-08 (Thu, 08 Jun 2023)

  Changed paths:
    M llvm/lib/CodeGen/GlobalISel/CombinerHelper.cpp
    M llvm/test/CodeGen/AArch64/GlobalISel/prelegalizer-combiner-divrem-insertpt-crash.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/combine-shl-from-extend-narrow.postlegal.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/combine-shl-from-extend-narrow.prelegal.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/shl-ext-reduce.ll

  Log Message:
  -----------
  [GlobalISel] Check if ShiftAmt is greater then size of operand

matchCombineShlOfExtend did not check if the size of new shift would be
wider then a size of operand. Current condition did not work if the value
being shifted was zero. Updated to support vector splat.

Patch by: Acim Maravic

Differential Revision: https://reviews.llvm.org/D151122