Revert "[MC][AsmParser] Diagnose improperly nested .cfi frames"

This reverts commit 4323da926f12672daec7f59384bd153a7cf28674.

This broke building libffi for ARM on Windows (and probably Darwin),
where one extern function intentionally falls through to another
one, while sharing one CFI region.

As long as one isn't using .subsections_via_symbols on MachO,
this probably shouldn't be a hard error.

Secondly, the tested pattern only produces an error on MachO and
COFF targets, but not for ELF, making the error case even more
inconsistent.

Reverting this commit for now, to figure out the best way forward.

GitOrigin-RevId: 797b68c0ba699994e1038ac33d3083541482bf19
1 file changed
tree: cb232675e0b4b007106c9373594437218fd3c586
  1. cmake/
  2. COFF/
  3. Common/
  4. docs/
  5. ELF/
  6. include/
  7. MachO/
  8. MinGW/
  9. test/
  10. tools/
  11. unittests/
  12. utils/
  13. wasm/
  14. .clang-format
  15. .clang-tidy
  16. .gitignore
  17. CMakeLists.txt
  18. CODE_OWNERS.TXT
  19. LICENSE.TXT
  20. README.md
README.md

LLVM Linker (lld)

This directory and its subdirectories contain source code for the LLVM Linker, a modular cross platform linker which is built as part of the LLVM compiler infrastructure project.

lld is open source software. You may freely distribute it under the terms of the license agreement found in LICENSE.txt.

Benchmarking

In order to make sure various developers can evaluate patches over the same tests, we create a collection of self contained programs.

It is hosted at https://s3-us-west-2.amazonaws.com/linker-tests/lld-speed-test.tar.xz

The current sha256 is 10eec685463d5a8bbf08d77f4ca96282161d396c65bd97dc99dbde644a31610f.