[all-commits] [llvm/llvm-project] 4e40c7: [lldb][debugserver] Save and restore the SVE/SME r...

[Jason Molenda via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 4e40c7c4bd66d98f529a807dbf410dc46444f4ca
      https://github.com/llvm/llvm-project/commit/4e40c7c4bd66d98f529a807dbf410dc46444f4ca
  Author: Jason Molenda <jmolenda at apple.com>
  Date:   2025-04-02 (Wed, 02 Apr 2025)

  Changed paths:
    M lldb/tools/debugserver/source/MacOSX/arm64/DNBArchImplARM64.cpp

  Log Message:
  -----------
  [lldb][debugserver] Save and restore the SVE/SME register state (#134184)

debugserver isn't saving and restoring the SVE/SME register state around
inferior function calls.

Making arbitrary function calls while in Streaming SVE mode is generally
a poor idea because a NEON instruction can be hit and crash the
expression execution, which is how I missed this, but they should be
handled correctly if the user knows it is safe to do.

rdar://146886210



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