[all-commits] [llvm/llvm-project] c4e2f7: [AArch64][GlobalISel] Limit srem by const of small...

[David Green via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: c4e2f79c22d2e22564cba60a7f4c1b126d6dfad9
      https://github.com/llvm/llvm-project/commit/c4e2f79c22d2e22564cba60a7f4c1b126d6dfad9
  Author: David Green <david.green at arm.com>
  Date:   2026-03-03 (Tue, 03 Mar 2026)

  Changed paths:
    M llvm/lib/CodeGen/GlobalISel/CombinerHelper.cpp
    M llvm/test/CodeGen/AArch64/srem-vec-crash.ll

  Log Message:
  -----------
  [AArch64][GlobalISel] Limit srem by const of small sizes. (#184066)

The code in SignedDivisionByConstantInfo::get can only handle bitwidths
>= 3. This adds a check for bitwidth==1 for urem too, although it will
already have been simplified.



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