[all-commits] [llvm/llvm-project] da9499: [AArch64] Reduce +sve2-aes to an alias of +sve-aes...

[SpencerAbson via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: da9499ebfb323602c42aeb674571fe89cec20ca6
      https://github.com/llvm/llvm-project/commit/da9499ebfb323602c42aeb674571fe89cec20ca6
  Author: SpencerAbson <Spencer.Abson at arm.com>
  Date:   2024-11-08 (Fri, 08 Nov 2024)

  Changed paths:
    M clang/include/clang/Basic/arm_sve.td
    M clang/lib/Basic/Targets/AArch64.cpp
    M clang/lib/Basic/Targets/AArch64.h
    M clang/test/CodeGen/aarch64-fmv-dependencies.c
    M clang/test/CodeGen/aarch64-sve2-intrinsics/acle_sve2_aesd.c
    M clang/test/CodeGen/aarch64-sve2-intrinsics/acle_sve2_aese.c
    M clang/test/CodeGen/aarch64-sve2-intrinsics/acle_sve2_aesimc.c
    M clang/test/CodeGen/aarch64-sve2-intrinsics/acle_sve2_aesmc.c
    M clang/test/CodeGen/aarch64-sve2-intrinsics/acle_sve2_pmullb_128.c
    M clang/test/CodeGen/aarch64-sve2-intrinsics/acle_sve2_pmullt_128.c
    M clang/test/Driver/aarch64-implied-sve-features.c
    M clang/test/Driver/print-supported-extensions-aarch64.c
    M clang/test/Preprocessor/aarch64-target-features.c
    M clang/test/Sema/aarch64-sve2-intrinsics/acle_sve2_aes_bitperm_sha3_sm4.cpp
    M lldb/test/Shell/Commands/command-disassemble-aarch64-extensions.s
    M llvm/lib/Target/AArch64/AArch64.td
    M llvm/lib/Target/AArch64/AArch64FMV.td
    M llvm/lib/Target/AArch64/AArch64Features.td
    M llvm/lib/Target/AArch64/AArch64InstrInfo.td
    M llvm/lib/Target/AArch64/AArch64SVEInstrInfo.td
    M llvm/lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp
    M llvm/test/CodeGen/AArch64/sve2-intrinsics-crypto.ll
    M llvm/test/MC/AArch64/SVE2/aesd.s
    M llvm/test/MC/AArch64/SVE2/aese.s
    M llvm/test/MC/AArch64/SVE2/aesimc.s
    M llvm/test/MC/AArch64/SVE2/aesmc.s
    M llvm/test/MC/AArch64/SVE2/directive-arch-negative.s
    M llvm/test/MC/AArch64/SVE2/directive-arch.s
    M llvm/test/MC/AArch64/SVE2/directive-arch_extension-negative.s
    M llvm/test/MC/AArch64/SVE2/directive-arch_extension.s
    M llvm/test/MC/AArch64/SVE2/directive-cpu-negative.s
    M llvm/test/MC/AArch64/SVE2/directive-cpu.s
    M llvm/test/MC/AArch64/SVE2/pmullb-128.s
    M llvm/test/MC/AArch64/SVE2/pmullt-128.s
    M llvm/unittests/TargetParser/TargetParserTest.cpp

  Log Message:
  -----------
  [AArch64] Reduce +sve2-aes to an alias of +sve-aes+sve2 (#114293)

This patch introduces the amended feature flag for
[FEAT_SVE_AES](https://developer.arm.com/documentation/109697/2024_09/Feature-descriptions/The-Armv9-0-architecture-extension?lang=en#md457-the-armv90-architecture-extension__feat_FEAT_SVE_AES),
'**sve-aes**'. The existing flag associated with this feature,
'sve2-aes' must be retained as an alias of 'sve-aes' and 'sve2' for
backwards compatibility.

The
[ACLE](https://github.com/ARM-software/acle/blob/main/main/acle.md#aes-extension)
documents `__ARM_FEATURE_SVE2_AES`, which was previously defined to 1
when

> there is hardware support for the SVE2 AES (FEAT_SVE_AES) instructions
and if the associated ACLE intrinsics are available.

The front-end has been amended such that it is compatible with +sve2-aes
and +sve2+sve-aes.



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