[all-commits] [llvm/llvm-project] da21f7: [AArch64] Add support for the Branch Record Buffer...

[Lucas Duarte Prates via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: da21f7ec146e7e46a1622253f1cce8af3b290e23
      https://github.com/llvm/llvm-project/commit/da21f7ec146e7e46a1622253f1cce8af3b290e23
  Author: Lucas Prates <lucas.prates at arm.com>
  Date:   2020-12-18 (Fri, 18 Dec 2020)

  Changed paths:
    M llvm/include/llvm/Support/AArch64TargetParser.def
    M llvm/include/llvm/Support/AArch64TargetParser.h
    M llvm/lib/Support/AArch64TargetParser.cpp
    M llvm/lib/Target/AArch64/AArch64.td
    M llvm/lib/Target/AArch64/AArch64InstrInfo.td
    M llvm/lib/Target/AArch64/AArch64Subtarget.h
    M llvm/lib/Target/AArch64/AArch64SystemOperands.td
    A llvm/test/MC/AArch64/brbe.s
    A llvm/test/MC/Disassembler/AArch64/brbe.txt

  Log Message:
  -----------
  [AArch64] Add support for the Branch Record Buffer extension

This introduces asm support for the Branch Record Buffer extension, through
the new 'brbe' subtarget feature. It consists of a new set of system registers
that enable the handling of branch records.

Patch written by Simon Tatham.

Reviewed By: ostannard

Differential Revision: https://reviews.llvm.org/D92389