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llvm / llvm-project / 9865171e24961d9ae85d7183d5f52c44b82a9c58
commit9865171e24961d9ae85d7183d5f52c44b82a9c58[log] [tgz]
authorAmara Emerson <amara@apple.com>Wed Jul 10 15:16:51 2024 -0700
committerGitHub <noreply@github.com>Wed Jul 10 15:16:51 2024 -0700
tree4678b50414967aec9451015f18f64a0043861cda
parent9392b45ef4720f470ffc11fb052f397c92758a16 [diff]
[AArch64] Add -mlr-for-calls-only to replace the now removed -ffixed-x30 flag. (#98073)

This re-introduces the effective behaviour that was reverted in
7ad481e76c9bee5b9895ebfa0fdb52f31cb7de77.

This time we're not using the same mechanism, exposing another
reservation feature
that prevents only regalloc from using the register, but not for other
required uses
like ABIs.

This also fixes a consequent issue with reserving LR, which is that
frame lowering
was only adding live-in flags for non-reserved regs. This would cause
issues later
since the outliner needs accurate flags to determine when LR needs to be
preserved.

rdar://131313095
10 files changed
tree: 4678b50414967aec9451015f18f64a0043861cda
  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!

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