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llvm / llvm-project / 534d221b63bb52f64e1f3ad3c40cfb87323d28ec
commit534d221b63bb52f64e1f3ad3c40cfb87323d28ec[log] [tgz]
authorPierre van Houtryve <pierre.vanhoutryve@amd.com>Thu May 08 13:22:57 2025 +0200
committerGitHub <noreply@github.com>Thu May 08 13:22:57 2025 +0200
tree36ad21b0cb4fbf33ad66ee13008db325e03a0924
parent0d47a4548c17b320e02e33a1e250792626652e59 [diff]
(reland) [GlobalISel] Diagnose inline assembly constraint lowering errors (#139049)

The initial patch (#135782 caused issues because it emits an error, and llc is sensitive to it.
It also caused compiler-rt/lib/scudo/standalone/tests/wrappers_cpp_test.cpp to fail.

Use warnings instead + reject lowering. That way, the fallback path is used without llc/clang returning a failure code.
If fallback isn't enabled then the warnings provide context as to why lowering failed.

Original commit description for #135782:

Instead of printing something to dbgs (which is not visible to all users),
emit a diagnostic like the DAG does. We still crash later because we fail to
select the inline assembly, but at least now users will know why it's crashing.

In a future patch we could also recover from the error like the DAG does, so the
lowering can keep going until it either crashes or gives a different error later.
2 files changed
tree: 36ad21b0cb4fbf33ad66ee13008db325e03a0924
  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
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