[PATCH] D96512: [PowerPC] Add option for ROP Protection

[Stefan Pintilie via Phabricator via llvm-commits]

stefanp created this revision.
stefanp added reviewers: lei, nemanjai.
Herald added subscribers: dang, shchenz, kbarton, hiraditya.
Herald added a reviewer: jansvoboda11.
stefanp requested review of this revision.
Herald added projects: clang, LLVM.
Herald added a subscriber: cfe-commits.

Added -mrop-protection for Power PC to turn on codegen that provides some
protection from ROP attacks.

The option is off by default and can be turned on for Power 8, Power 9 and
Power 10.

This patch is for the option only. The feature will be implemented by a later
patch.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D96512

Files:
  clang/include/clang/Driver/Options.td
  clang/lib/Basic/Targets/PPC.cpp
  clang/lib/Basic/Targets/PPC.h
  clang/test/Driver/ppc-mrop-protection-support-check.c
  clang/test/Preprocessor/init-ppc64.c
  llvm/lib/Target/PowerPC/PPC.td
  llvm/lib/Target/PowerPC/PPCSubtarget.cpp
  llvm/lib/Target/PowerPC/PPCSubtarget.h
  llvm/test/CodeGen/PowerPC/future-check-features.ll

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