[PATCH] D126137: [X86] Add support for `-mharden-sls=all`

[Phoebe Wang via Phabricator via cfe-commits]

pengfei created this revision.
pengfei added reviewers: nickdesaulniers, craig.topper, LuoYuanke.
Herald added subscribers: StephenFan, hiraditya, kristof.beyls.
Herald added a project: All.
pengfei requested review of this revision.
Herald added subscribers: llvm-commits, cfe-commits, MaskRay.
Herald added projects: clang, LLVM.

The patch addresses the feature request from #1633. The implementation
borrows the a lot from aarch64.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D126137

Files:
  clang/docs/ReleaseNotes.rst
  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

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