[all-commits] [llvm/llvm-project] e3c269: [PowerPC] Implement general back2back fusion

[Qiu Chaofan via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: e3c2694da98d9e6585b47cebfedce8473f679fff
      https://github.com/llvm/llvm-project/commit/e3c2694da98d9e6585b47cebfedce8473f679fff
  Author: Qiu Chaofan <qiucofan at cn.ibm.com>
  Date:   2021-12-06 (Mon, 06 Dec 2021)

  Changed paths:
    M llvm/lib/Target/PowerPC/PPC.td
    A llvm/lib/Target/PowerPC/PPCBack2BackFusion.def
    M llvm/lib/Target/PowerPC/PPCMacroFusion.def
    M llvm/lib/Target/PowerPC/PPCSubtarget.cpp
    M llvm/lib/Target/PowerPC/PPCSubtarget.h
    M llvm/test/CodeGen/PowerPC/macro-fusion.mir

  Log Message:
  -----------
  [PowerPC] Implement general back2back fusion

Implement 'back-to-back' FX fusion according to Power10 User Manual
'19.1.5.4 Fusion', not enabled by default.

Reviewed By: nemanjai

Differential Revision: https://reviews.llvm.org/D114345