[all-commits] [llvm/llvm-project] b16372: [PowerPC][MC] Set 'future' as default CPU type of ...

[Qiu Chaofan via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: b16372c5fc65a6a7c14c19f01b17ac15a964d21f
      https://github.com/llvm/llvm-project/commit/b16372c5fc65a6a7c14c19f01b17ac15a964d21f
  Author: Qiu Chaofan <qiucofan at cn.ibm.com>
  Date:   2023-07-13 (Thu, 13 Jul 2023)

  Changed paths:
    M llvm/include/llvm/Object/XCOFFObjectFile.h
    M llvm/lib/Object/XCOFFObjectFile.cpp

  Log Message:
  -----------
  [PowerPC][MC] Set 'future' as default CPU type of XCOFF

For Power on Linux (both LE and BE), ELFObjectFile returns 'future' as
default CPU type if mcpu is not specified, so that all necessary
features will be enabled in MC.

While for XCOFF, the default CPU type is always null, which makes tools
like llvm-objdump not able to recognize prefixed instructions, unless
specifying --mcpu=pwr10 or --mattr=+prefix-instrs manually.

Reviewed By: nemanjai

Differential Revision: https://reviews.llvm.org/D155089