Relink don't rebuild: add a baseline, sound implementation that can be incrementally improved#155871

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susitsm wants to merge 20 commits into

rust-lang:mainfrom

susitsm:relink-dont-rebuild-base

Commits on May 29, 2026

rdr: add RDRHashes field to CrateRoot
susitsm
committed
rdr: add public_api_hash unstable option
susitsm
committed
derive HashStable for TargetModifier
susitsm
committed
derive HashStable for DeniedPartialMitigation
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implement StableHash for TargetTuple
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committed
tidy: move TargetTuple to a new file
susitsm
committed
rdr: implement rmeta public api hash as the stable hash of (almost) all encoded data
susitsm
committed
Add public api hash debug logs
susitsm
committed
rdr: elaborate on how EII-s should be included in the public api hash
susitsm
committed
rdr: document the process of hashing new fields added to CrateRoot
susitsm
committed
rdr: document hashed_lazy_array
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rdr: hash spans as if they had no parents (spans are encoded into the rmeta without parents)
susitsm
committed
rdr: add the public_api_hash query. Queries provided by rmeta now depend on public_api_hash instead of crate_hash
susitsm
committed
rdr: add rustc_public_hash_unchanged and rustc_public_hash_changed attributes for testing
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rdr: add incremental test exercising rustc_public_hash_changed and rustc_public_hash_unchanged attributes
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rdr: use public_api_hash when hashing dependencies
susitsm
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rdr: use public_api_hash in the rmeta headers
susitsm
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rdr: move the hashes to crate header, properly handle private and public hashes in the resolver
susitsm
committed
rdr: add hash FIXME comments to LazyTables fields
susitsm
committed
rdr-perf: make encode_crate_root const generic over public api hashing
susitsm
committed

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Relink don't rebuild: add a baseline, sound implementation that can be incrementally improved#155871

Relink don't rebuild: add a baseline, sound implementation that can be incrementally improved#155871
susitsm wants to merge 20 commits into
rust-lang:mainfrom
susitsm:relink-dont-rebuild-base

Commits on May 29, 2026

rdr: add RDRHashes field to CrateRoot

rdr: add public_api_hash unstable option

derive HashStable for TargetModifier

derive HashStable for DeniedPartialMitigation

implement StableHash for TargetTuple

tidy: move TargetTuple to a new file

rdr: implement rmeta public api hash as the stable hash of (almost) all encoded data

Add public api hash debug logs

rdr: elaborate on how EII-s should be included in the public api hash

rdr: document the process of hashing new fields added to CrateRoot

rdr: document hashed_lazy_array

rdr: hash spans as if they had no parents (spans are encoded into the rmeta without parents)

rdr: add the public_api_hash query. Queries provided by rmeta now depend on public_api_hash instead of crate_hash

rdr: add rustc_public_hash_unchanged and rustc_public_hash_changed attributes for testing

rdr: add incremental test exercising rustc_public_hash_changed and rustc_public_hash_unchanged attributes

rdr: use public_api_hash when hashing dependencies

rdr: use public_api_hash in the rmeta headers

rdr: move the hashes to crate header, properly handle private and public hashes in the resolver

rdr: add hash FIXME comments to LazyTables fields

rdr-perf: make encode_crate_root const generic over public api hashing