[PATCH] D109157: [ARM] Mitigate the cve-2021-35465 security vulnurability.

[Alexandros Lamprineas via Phabricator via llvm-commits]

labrinea updated this revision to Diff 371028.
labrinea added a comment.

Changes in this revision:

- pass the -arm-fix-cmse-cve-2021-35465 option once
- document -m(no)fix-cmse-cve-2021-35465 in ClangCommandLineReference.rst
- add clang tests with the mitigation expicitely disabled on affected cpus
- removed `.addReg(ARM::CPSR, RegState::ImplicitDefine)`
- moved the mitigation sequence inside a bundle to prevent reordering


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D109157/new/

https://reviews.llvm.org/D109157

Files:
  clang/docs/ClangCommandLineReference.rst
  clang/include/clang/Driver/Options.td
  clang/lib/Driver/ToolChains/Clang.cpp
  clang/test/Driver/arm-cmse-cve-2021-35465.c
  llvm/lib/Target/ARM/ARMExpandPseudoInsts.cpp
  llvm/test/CodeGen/ARM/cmse-cve-2021-35465-return.ll
  llvm/test/CodeGen/ARM/cmse-cve-2021-35465.ll

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