[all-commits] [llvm/llvm-project] 71d6b0: [AArch64][GlobalISel] Lower shuffle vector with sc...

[David Green via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 71d6b0b0c1e5e7f34ccb710470cb90a9a51005c8
      https://github.com/llvm/llvm-project/commit/71d6b0b0c1e5e7f34ccb710470cb90a9a51005c8
  Author: David Green <david.green at arm.com>
  Date:   2024-12-31 (Tue, 31 Dec 2024)

  Changed paths:
    M llvm/lib/Target/AArch64/GISel/AArch64LegalizerInfo.cpp
    A llvm/test/CodeGen/AArch64/GlobalISel/legalize-shuffle-1x.ll
    M llvm/test/CodeGen/AArch64/GlobalISel/legalize-shuffle-vector.mir

  Log Message:
  -----------
  [AArch64][GlobalISel] Lower shuffle vector with scalar destinations. (#121384)

I believe these are usually canonicalized to vector extracts in most
situations, but under -O0 we might trigger failures in the widening code
if we do not handle scalar destinations correctly. The simplest solution
should be to lower the shuffle to an extract.

Fixes #121365.



To unsubscribe from these emails, change your notification settings at https://github.com/llvm/llvm-project/settings/notifications