[all-commits] [llvm/llvm-project] a6aaa9: [AArch64] Assembly support for FEAT_LRCPC3

[tmatheson-arm via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: a6aaa969f7caec58a994142f8d855861cf3a1463
      https://github.com/llvm/llvm-project/commit/a6aaa969f7caec58a994142f8d855861cf3a1463
  Author: Tomas Matheson <tomas.matheson at arm.com>
  Date:   2022-11-25 (Fri, 25 Nov 2022)

  Changed paths:
    A clang/test/Driver/aarch64-lrcpc3.c
    M llvm/include/llvm/Support/AArch64TargetParser.def
    M llvm/include/llvm/Support/AArch64TargetParser.h
    M llvm/lib/Target/AArch64/AArch64.td
    M llvm/lib/Target/AArch64/AArch64InstrFormats.td
    M llvm/lib/Target/AArch64/AArch64InstrInfo.td
    M llvm/lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp
    M llvm/test/MC/AArch64/arm64-memory.s
    A llvm/test/MC/AArch64/armv8.9a-lrcpc3.s
    A llvm/test/MC/Disassembler/AArch64/armv8.9a-lrcpc3.txt
    M llvm/unittests/Support/TargetParserTest.cpp

  Log Message:
  -----------
  [AArch64] Assembly support for FEAT_LRCPC3

This patch implements assembly support for the 2022 A-Profile Architecture
extension FEAT_LRCPC3. FEAT_LRCPC3 is AArch64 only and introduces new
variants of load/store instructions with release consistency ordering.

Specs for individual instructions can be found here:
https://developer.arm.com/documentation/ddi0602/2022-09/Base-Instructions/

This feature is optionally available from v8.2a and therefore not enabled by
default.

Contributors:
  Lucas Prates
  Sam Elliot
  Son Tuan Vu
  Tomas Matheson

Differential Revision: https://reviews.llvm.org/D138579