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llvm / llvm-project / 098b0d18add97dea94e16006486b2fded65e228d
commit098b0d18add97dea94e16006486b2fded65e228d[log] [tgz]
authorPeter Smith <peter.smith@arm.com>Fri Nov 15 18:18:18 2024 +0000
committerGitHub <noreply@github.com>Fri Nov 15 18:18:18 2024 +0000
treeb892125899cc52a2d420435003896fd6680e933f
parentef92aba52a58cda8d670de8ce936455949746468 [diff]
[LLD][AArch64] Detach Landing Pad creation from Thunk creation (#116402)

Move Landing Pad Creation to a new function that checks each thunk every
pass to see if it needs a landing pad. This permits a thunk to be
created without needing a landing pad, but later needing one due to
drifting out of direct branch range and requiring an indirect branch.

We record all the Thunks created so far in a new vector rather than
trying to iterate over the DenseMap as we need a deterministic order of
adding LandingPadThunks due to the short branch fall through. We cannot
use normalizeExistingThunk() either as that only iterates through live
thunks.

Fixes: https://crbug.com/377438309
Original PR: https://github.com/llvm/llvm-project/pull/108989

Sending without a new test case to fix existing test. A new regression
test will come in a separate PR as coming up with a small enough
reproducer for this case is non-trivial.
2 files changed
tree: b892125899cc52a2d420435003896fd6680e933f
  1. .ci/
  2. .github/
  3. bolt/
  4. clang/
  5. clang-tools-extra/
  6. cmake/
  7. compiler-rt/
  8. cross-project-tests/
  9. flang/
  10. libc/
  11. libclc/
  12. libcxx/
  13. libcxxabi/
  14. libunwind/
  15. lld/
  16. lldb/
  17. llvm/
  18. llvm-libgcc/
  19. mlir/
  20. offload/
  21. openmp/
  22. polly/
  23. pstl/
  24. runtimes/
  25. third-party/
  26. utils/
  27. .clang-format
  28. .clang-tidy
  29. .git-blame-ignore-revs
  30. .gitattributes
  31. .gitignore
  32. .mailmap
  33. CODE_OF_CONDUCT.md
  34. CONTRIBUTING.md
  35. LICENSE.TXT
  36. pyproject.toml
  37. README.md
  38. SECURITY.md
README.md

The LLVM Compiler Infrastructure

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Welcome to the LLVM project!

This repository contains the source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and run-time environments.

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