[libcxx-commits] [PATCH] D137599: [libunwind][PowerPC] Fix saving/restoring VSX registers on LE systems

[Nemanja Ivanovic via Phabricator via libcxx-commits]

nemanjai updated this revision to Diff 486902.
nemanjai added a comment.
Herald added a project: libc++abi.
Herald added a reviewer: libc++abi.

Reduce complexity of the code at the expense of performance on Power9 and newer subtargets. The updated code uses `{st|l}xvd2x` for saving/restoring with the necessary swaps regardless of the subtarget.
Added a test case to libcxxabi.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D137599/new/

https://reviews.llvm.org/D137599

Files:
  libcxxabi/test/vendor/ibm/vec_reg_restore-le.pass.cpp
  libunwind/src/UnwindRegistersRestore.S
  libunwind/src/UnwindRegistersSave.S

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