[all-commits] [llvm/llvm-project] d88d98: [AArch64][GlobalISel] Support more types for TRUNC...

[chuongg3 via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d88d9834e985ad1feede6d9ce16b6d5c412b30d1
      https://github.com/llvm/llvm-project/commit/d88d9834e985ad1feede6d9ce16b6d5c412b30d1
  Author: chuongg3 <chuong.goh at arm.com>
  Date:   2023-10-11 (Wed, 11 Oct 2023)

  Changed paths:
    M llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h
    M llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
    M llvm/lib/Target/AArch64/GISel/AArch64LegalizerInfo.cpp
    M llvm/lib/Target/AArch64/GISel/AArch64LegalizerInfo.h
    A llvm/test/CodeGen/AArch64/GlobalISel/legalize-xtn.mir
    A llvm/test/CodeGen/AArch64/xtn.ll
    M llvm/test/CodeGen/AArch64/zext.ll

  Log Message:
  -----------
  [AArch64][GlobalISel] Support more types for TRUNC (#66927)

G_TRUNC will get lowered into trunc(merge(trunc(unmerge),
trunc(unmerge))) if the source is larger than 128 bits or the truncation
is more than half of the current bit size.

Now mirrors ZEXT/SEXT code more closely for vector types.