[PATCH] D59034: Delete x86_64 ShadowCallStack support

[Vlad Tsyrklevich via Phabricator via cfe-commits]

vlad.tsyrklevich created this revision.
vlad.tsyrklevich added a reviewer: pcc.
Herald added subscribers: llvm-commits, Sanitizers, cfe-commits, jdoerfert, hiraditya, javed.absar, mgorny.
Herald added projects: clang, Sanitizers, LLVM.

ShadowCallStack on x86_64 suffered from the same racy security issues as
Return Flow Guard and had performance overhead as high as 13% depending
on the benchmark. x86_64 ShadowCallStack was always an experimental
feature and never shipped a runtime required to support it, as such
there are no expected downstream users.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D59034

Files:
  clang/docs/ShadowCallStack.rst
  compiler-rt/cmake/config-ix.cmake
  compiler-rt/test/shadowcallstack/libc_support.h
  compiler-rt/test/shadowcallstack/lit.cfg
  compiler-rt/test/shadowcallstack/minimal_runtime.h
  compiler-rt/test/shadowcallstack/overflow-aarch64.c
  compiler-rt/test/shadowcallstack/overflow-x86_64.c
  compiler-rt/test/shadowcallstack/overflow.c
  llvm/lib/Target/X86/CMakeLists.txt
  llvm/lib/Target/X86/ShadowCallStack.cpp
  llvm/lib/Target/X86/X86.h
  llvm/lib/Target/X86/X86TargetMachine.cpp
  llvm/test/CodeGen/X86/O0-pipeline.ll
  llvm/test/CodeGen/X86/O3-pipeline.ll
  llvm/test/CodeGen/X86/shadow-call-stack.mir
  llvm/utils/gn/secondary/llvm/lib/Target/X86/BUILD.gn

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