[all-commits] [llvm/llvm-project] 08b8b7: [X86] Add inline assembly load hardening mitigatio...

[topperc via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 08b8b724ee3ac7ae7f516e036616620aa33968f1
      https://github.com/llvm/llvm-project/commit/08b8b724ee3ac7ae7f516e036616620aa33968f1
  Author: Craig Topper <craig.topper at intel.com>
  Date:   2020-05-11 (Mon, 11 May 2020)

  Changed paths:
    M llvm/lib/Target/X86/AsmParser/X86AsmParser.cpp
    A llvm/test/CodeGen/X86/lvi-hardening-inline-asm.ll

  Log Message:
  -----------
  [X86] Add inline assembly load hardening mitigation for Load Value Injection (LVI)

Added code to X86AsmParser::emitInstruction() to add an LFENCE after each instruction that may load, and emit a warning if it encounters an instruction that may be vulnerable, but cannot be automatically mitigated.

Differential Revision: https://reviews.llvm.org/D76158