[X86] Add support for `-mharden-sls=[none|all|return|indirect-jmp]`
authorPhoebe Wang <phoebe.wang@intel.com>
Wed, 1 Jun 2022 01:24:34 +0000 (09:24 +0800)
committerPhoebe Wang <phoebe.wang@intel.com>
Wed, 1 Jun 2022 01:45:04 +0000 (09:45 +0800)
commita2ea5b496bcd3762f96c38a09db1d38729fa6325
treedfc96b2719e73b06d8d7df8095cd55c43c396b19
parente183665874108821640afa0a9c8f50604ac9abd4
[X86] Add support for `-mharden-sls=[none|all|return|indirect-jmp]`

The patch addresses the feature request from https://github.com/ClangBuiltLinux/linux/issues/1633. The implementation borrows a lot from aarch64.

Reviewed By: nickdesaulniers, MaskRay

Differential Revision: https://reviews.llvm.org/D126137
clang/docs/ReleaseNotes.rst
clang/include/clang/Driver/Options.td
clang/lib/Driver/ToolChains/Arch/X86.cpp
clang/test/Driver/x86-target-features.c
llvm/lib/Target/X86/X86.td
llvm/lib/Target/X86/X86AsmPrinter.cpp
llvm/lib/Target/X86/X86AsmPrinter.h
llvm/test/CodeGen/X86/speculation-hardening-sls.ll [new file with mode: 0644]