Chris Tate 65555dace3 Drop struct type names before the thin link instead of renaming promoted locals ...

The partitions of a program build have no locals for ThinLTO to promote:
symbols that other partitions refer to are already hidden. What changed
the modules after importing, and with them the object cache keys, of
partitions an edit did not touch was the numbering of struct types. Every
partition declares the program's types under the same names, and the thin
link loads the importing partition and the partitions it imports from into
one context, which tells same-named types apart by appending a counter
that runs across the whole link. An edit that adds a type anywhere shifted
the counter.

Partitions now drop the names of their struct types before their summary
is written; importing matches unnamed types by their bodies. The
promoted-locals option, the per-partition source file name and the
partition index in the summary key are removed.

2026-10-24 17:47:58 -05:00

..

llvm-codegen

Drop struct type names before the thin link instead of renaming promoted locals

2026-10-24 17:47:58 -05:00