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llvm / llvm-project / fd3fecfc0936703f2715fe6fea890e81b0b3c2ac
commitfd3fecfc0936703f2715fe6fea890e81b0b3c2ac[log] [tgz]
authorHans Wennborg <hans@chromium.org>Tue May 13 10:41:47 2025 +0200
committerHans Wennborg <hans@chromium.org>Tue May 13 10:57:46 2025 +0200
tree2d03f26a61b19cdd2ce85d0f9e3d63c041c14a7e
parent98763433e66dd91bf5f10b1daf03d9373f07912a [diff]
Revert "[lld] Merge equivalent symbols found during ICF (#134342)"

The change would also merge *non-equivalent* symbols under some circumstances,
see comment with a reproducer on the PR.

> Fixes a correctness issue for AArch64 when ADRP and LDR instructions are
> outlined in separate sections and sections are fed to ICF for
> deduplication.
>
> See test case (based on
> https://github.com/llvm/llvm-project/issues/129122) for details. All
> rodata.* sections are folded into a single section with ICF. This leads
> to all f2_* function sections getting folded into one (as their
> relocation target symbols g* belong to .rodata.g* sections that have
> already been folded into one). Since relocations still refer original g*
> symbols, we end up creating duplicate GOT entry for all such symbols.
> This PR addresses that by tracking such folded symbols and create one
> GOT entry for all such symbols.
>
> Fixes https://github.com/llvm/llvm-project/issues/129122
>
> Co-authored by: @jyknight

This reverts commit 8389d6fad76bd880f02bddce7f0f2612ff0afc40.
5 files changed
tree: 2d03f26a61b19cdd2ce85d0f9e3d63c041c14a7e
  1. .ci/
  2. .github/
  3. bolt/
  4. clang/
  5. clang-tools-extra/
  6. cmake/
  7. compiler-rt/
  8. cross-project-tests/
  9. flang/
  10. flang-rt/
  11. libc/
  12. libclc/
  13. libcxx/
  14. libcxxabi/
  15. libunwind/
  16. lld/
  17. lldb/
  18. llvm/
  19. llvm-libgcc/
  20. mlir/
  21. offload/
  22. openmp/
  23. polly/
  24. pstl/
  25. runtimes/
  26. third-party/
  27. utils/
  28. .clang-format
  29. .clang-format-ignore
  30. .clang-tidy
  31. .git-blame-ignore-revs
  32. .gitattributes
  33. .gitignore
  34. .mailmap
  35. CODE_OF_CONDUCT.md
  36. CONTRIBUTING.md
  37. LICENSE.TXT
  38. pyproject.toml
  39. README.md
  40. 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.

The LLVM project has multiple components. The core of the project is itself called “LLVM”. This contains all of the tools, libraries, and header files needed to process intermediate representations and convert them into object files. Tools include an assembler, disassembler, bitcode analyzer, and bitcode optimizer.

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