[PATCH] D130754: [X86] Support ``-mindirect-branch-cs-prefix`` for call and jmp to indirect thunk

[Phoebe Wang via Phabricator via cfe-commits]

pengfei updated this revision to Diff 449275.
pengfei marked an inline comment as done.
pengfei added a comment.

Add CC1 option test.

> When a module with "`indirect_branch_cs_prefix`" and another without the module flag are merged, what the result should be? If 0, we should use `Min` instead of `Override`.

I think `Override` is correct. This option is used for Linux Kernel build. When merged, all should be set to 1.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D130754/new/

https://reviews.llvm.org/D130754

Files:
  clang/docs/ReleaseNotes.rst
  clang/include/clang/Basic/CodeGenOptions.def
  clang/include/clang/Driver/Options.td
  clang/lib/CodeGen/CodeGenModule.cpp
  clang/lib/Driver/ToolChains/Clang.cpp
  clang/test/CodeGen/X86/indirect-branch-cs-prefix.c
  clang/test/Driver/x86_features.c
  llvm/lib/Target/X86/X86MCInstLower.cpp
  llvm/lib/Target/X86/X86ReturnThunks.cpp
  llvm/test/CodeGen/X86/attr-function-return.ll
  llvm/test/CodeGen/X86/lvi-hardening-indirectbr.ll

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