feature: implement Relink, Don't Rebuild (RDR) - #151265

Draft

davidbarsky wants to merge 19 commits into

rust-lang:mainfrom

davidbarsky:push-ukyuqwxxwmxr

Commits on Jan 17, 2026

rdr: migrate ExpnData and rmeta tables from Span to SpanRef
davidbarsky
committed
909bb5a
rdr: introduce IdentRef for identifier storage
davidbarsky
committed
f9ceeac

Commits on Jan 18, 2026

rdr: serialize diagnostic spans as SpanRef
davidbarsky
committed
f511992
rdr: split source_map encoding into separate .spans file
davidbarsky
committed
6b263f3
rdr: lazy loading of span files
davidbarsky
committed
c7a9592
rdr: graceful span degradation when .spans file unavailable
davidbarsky
committed
c4161d2
rdr: SpanRef respects hash_spans() for RDR fingerprinting
davidbarsky
committed
b867a1f
rdr: implement SpanResolver and span file loading infrastructure
davidbarsky
committed
6cf2679
rdr: implement diagnostic gating for codegen safety
davidbarsky
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48df429
rdr: make SVH stable when only private items change
davidbarsky
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56a1f4f
rdr: add tests for panic locations, debuginfo, and coverage
davidbarsky
committed
de0cb57
test: update function_interfaces.rs for correct typeck invalidation
davidbarsky
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d6d497a
rdr: consolidate span loading
davidbarsky
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b7bad85
rdr: add a bunch of tests exercising rdr
davidbarsky
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7d02a56
rdr: rename `-Zseparate-spans` to `-Zstable-crate-hash`
davidbarsky
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f0233d8
rdr: add a test that shows adding a private item doesn't cause rebuilds
davidbarsky
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20f7d4f
rdr: migrate some queries from `Span` to `SpanRef`
davidbarsky
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770d5fe
rdr: fix SpanRef resolution and optimize metadata encoding
davidbarsky
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69ccd5a
rdr: add a test that exercises RDR with `-Zshare-generics`
davidbarsky
committed
8c20bd8