[PATCH] D109157: [ARM] Mitigate the cve-2021-35465 security vulnurability.

[Alexandros Lamprineas via Phabricator via llvm-commits]

labrinea updated this revision to Diff 372677.
labrinea added a comment.

Changes in this revision:

- added `-verify-machineinstrs` to the tests
- that yield two bugs that I had to address:

  *** Bad machine code: Explicit operand marked as def ***
  - function:    func
  - basic block: %bb.0 entry (0x890b6d8)
  - instruction: $d3 = VSTRD $sp, 6, 14, $noreg
  - operand 0:   $d3



  *** Bad machine code: Explicit definition marked as use ***
  - function:    non_secure_call
  - basic block: %bb.0  (0x8e0bed8)
  - instruction: t2MRS_M $r12, 20, 14, $noreg
  - operand 0:   $r12


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D109157/new/

https://reviews.llvm.org/D109157

Files:
  clang/docs/ClangCommandLineReference.rst
  clang/include/clang/Driver/Options.td
  clang/lib/Driver/ToolChains/Arch/ARM.cpp
  clang/test/Driver/arm-cmse-cve-2021-35465.c
  llvm/lib/Target/ARM/ARM.td
  llvm/lib/Target/ARM/ARMExpandPseudoInsts.cpp
  llvm/lib/Target/ARM/ARMSubtarget.h
  llvm/test/CodeGen/ARM/cmse-cve-2021-35465-return.ll
  llvm/test/CodeGen/ARM/cmse-cve-2021-35465.ll
  llvm/test/CodeGen/ARM/cmse-vlldm-no-reorder.mir

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