[all-commits] [llvm/llvm-project] d43fc5: Reland: [AArch64] Assembly support for the Checked...

[Lucas Duarte Prates via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d43fc5a6ad2f6092ac82b76590951235ec46f6e2
      https://github.com/llvm/llvm-project/commit/d43fc5a6ad2f6092ac82b76590951235ec46f6e2
  Author: Lucas Duarte Prates <lucas.prates at arm.com>
  Date:   2023-12-20 (Wed, 20 Dec 2023)

  Changed paths:
    M clang/test/Driver/aarch64-v95a.c
    M llvm/include/llvm/TargetParser/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/AArch64SVEInstrInfo.td
    M llvm/lib/Target/AArch64/AArch64SchedA64FX.td
    M llvm/lib/Target/AArch64/AArch64SchedNeoverseN2.td
    M llvm/lib/Target/AArch64/AArch64SchedNeoverseV1.td
    M llvm/lib/Target/AArch64/AArch64SchedNeoverseV2.td
    M llvm/lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp
    M llvm/lib/Target/AArch64/SVEInstrFormats.td
    A llvm/test/MC/AArch64/SVE/armv9.5a-cpa.s
    A llvm/test/MC/AArch64/armv9.5a-cpa.s
    M llvm/test/MC/AArch64/basic-a64-diagnostics.s
    M llvm/test/MC/AArch64/basic-a64-instructions.s
    A llvm/test/MC/Disassembler/AArch64/armv9.5a-cpa.txt
    M llvm/test/MC/Disassembler/AArch64/basic-a64-instructions.txt
    M llvm/unittests/TargetParser/TargetParserTest.cpp

  Log Message:
  -----------
  Reland: [AArch64] Assembly support for the Checked Pointer Arithmetic Extension (#73777)

This introduces assembly support for the Checked Pointer Arithmetic
Extension (FEAT_CPA), annouced as part of the Armv9.5-A architecture
version.

The changes include:
* New subtarget feature for FEAT_CPA
* New scalar instruction for pointer arithmetic
  * ADDPT, SUBPT, MADDPT, and MSUBPT
* New SVE instructions for pointer arithmetic
  * ADDPT (vectors, predicated), ADDPT (vectors, unpredicated)
  * SUBPT (vectors, predicated), SUBPT (vectors, unpredicated)
  * MADPT and MLAPT
* New ID_AA64ISAR3_EL1 system register

Mode details about the extension can be found at:
* https://community.arm.com/arm-community-blogs/b/architectures-and-processors-blog/posts/arm-a-profile-architecture-developments-2023
* https://developer.arm.com/documentation/ddi0602/2023-09/

Co-authored-by: Rodolfo Wottrich <rodolfo.wottrich at arm.com>