Harald van Dijk e365ea8d03 [DebugInfo] Robustify DISubprogram upgrade (#190611) ...

The bitcode upgrade process for DISubprogram was fragile and depended on
the exact order in which DICompileUnit, DISubprogram, and the list of
DISubprograms were emitted. This would work out okay with bitcode
written by standard LLVM, but was not a rule that the old format had.
This commit makes the upgrade process work when these metadata nodes are
emitted in any order, and updates the existing upgrade-subprogram.ll
test to cover all orders. The corresponding .bc file was written by a
patched version of LLVM 3.7 that provides a hook to force nodes to be
emitted in a specific order and can be inspected with llvm-bcanalyzer
--dump.

2026-05-12 20:04:57 +01:00

1.1 KiB

Raw Permalink History

View Raw