[all-commits] [llvm/llvm-project] 0b91b1: [AArch64][GlobalISel] Legalize and Lower Funnel Sh...

[chuongg3 via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 0b91b1aec4809b97a19b1f9e8585927c978dcda0
      https://github.com/llvm/llvm-project/commit/0b91b1aec4809b97a19b1f9e8585927c978dcda0
  Author: Tuan Chuong Goh <chuong.goh at arm.com>
  Date:   2023-08-22 (Tue, 22 Aug 2023)

  Changed paths:
    M llvm/lib/Target/AArch64/GISel/AArch64LegalizerInfo.cpp
    M llvm/lib/Target/AArch64/GISel/AArch64LegalizerInfo.h
    M llvm/test/CodeGen/AArch64/GlobalISel/legalize-fshl.mir
    M llvm/test/CodeGen/AArch64/GlobalISel/legalize-fshr.mir
    M llvm/test/CodeGen/AArch64/funnel-shift.ll

  Log Message:
  -----------
  [AArch64][GlobalISel] Legalize and Lower Funnel Shift for GlobalISel

Recognise G_FSHR with constant shift amount as a legal instruction.
Lowers G_FSHL with constant shift to G_FSHR.
If shift amount is non-constant, generic lowering is applied to the
instruction.

Differential Revision: https://reviews.llvm.org/D155484