[PATCH] D76458: Add Indirect Thunk Support to X86 to mitigate Load Value Injection (LVI) [by modifying X86RetpolineThunks.cpp]

[Scott Constable via Phabricator via llvm-commits]

sconstab created this revision.
sconstab added reviewers: zbrid, craig.topper, andrew.w.kaylor, chandlerc.
Herald added subscribers: jfb, hiraditya.

This patch is an alternate implementation of D75934 <https://reviews.llvm.org/D75934> that mitigates LVI indirect calls/jumps by making changes to the existing X86RetpolineThunks pass, instead of introducing a new pass.


https://reviews.llvm.org/D76458

Files:
  clang/include/clang/Driver/Options.td
  clang/lib/Driver/ToolChains/Arch/X86.cpp
  llvm/lib/Target/X86/X86.td
  llvm/lib/Target/X86/X86RetpolineThunks.cpp
  llvm/lib/Target/X86/X86Subtarget.h
  llvm/test/CodeGen/X86/lvi-hardening-indirectbr.ll

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