[all-commits] [llvm/llvm-project] 84e545: [AArch64] Add support for -mcpu=gb10. (#146515)

[Ricardo Jesus via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 84e54515bc4e9dd4938121f4df7cc27bb89a0a43
      https://github.com/llvm/llvm-project/commit/84e54515bc4e9dd4938121f4df7cc27bb89a0a43
  Author: Ricardo Jesus <rjj at nvidia.com>
  Date:   2025-07-07 (Mon, 07 Jul 2025)

  Changed paths:
    A clang/test/Driver/print-enabled-extensions/aarch64-gb10.c
    M clang/test/Misc/target-invalid-cpu-note/aarch64.c
    M llvm/lib/Target/AArch64/AArch64Processors.td
    M llvm/lib/TargetParser/Host.cpp
    M llvm/unittests/TargetParser/Host.cpp
    M llvm/unittests/TargetParser/TargetParserTest.cpp

  Log Message:
  -----------
  [AArch64] Add support for -mcpu=gb10. (#146515)

This patch adds support for -mcpu=gb10 (NVIDIA GB10). This is a
big.LITTLE cluster of Cortex-X925 and Cortex-A725 cores. The appropriate
MIDR numbers are added to detect them in -mcpu=native.

We did not add an -mcpu=cortex-x925.cortex-a725 option because GB10 does
include the crypto instructions which we want on by default, and the
current convention is to not enable such extensions for Arm Cortex cores
in -mcpu where they are optional in the IP.

Relevant GCC patch:
https://gcc.gnu.org/pipermail/gcc-patches/2025-June/687005.html



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