[PATCH] D61881: Deal with return-twice function such as vfork, setjmp when CET-IBT enabled

[Xiang Zhang via Phabricator via llvm-commits]

xiangzhangllvm created this revision.
xiangzhangllvm added reviewers: LuoYuanke, craig.topper, annita.zhang.
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Return-twice functions will indirectly jump after the caller's position.
So when CET-IBT is enable, we should make sure these is endbr* instructions follow these Return-twice function caller. Like GCC does.


Repository:
  rL LLVM

https://reviews.llvm.org/D61881

Files:
  lib/Target/X86/X86IndirectBranchTracking.cpp
  test/CodeGen/X86/indirect-branch-tracking-r2.ll

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