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

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susitsm wants to merge 28 commits into

rust-lang:mainfrom

susitsm:relink-dont-rebuild-base

Commits on Jun 8, 2026

rdr: add RDRHashes field to CrateRoot
susitsm
committed
9aea8fe
rdr: add public_api_hash unstable option
susitsm
committed
4b9c951
derive HashStable for TargetModifier
susitsm
committed
d59bd32
derive HashStable for DeniedPartialMitigation
susitsm
committed
2490296
implement StableHash for TargetTuple
susitsm
committed
59904c6
tidy: move TargetTuple to a new file
susitsm
committed
df8c588
rdr: implement rmeta public api hash as the stable hash of (almost) all encoded data
susitsm
committed
502a4b5
Add public api hash debug logs
susitsm
committed
eb2cb70
rdr: elaborate on how EII-s should be included in the public api hash
susitsm
committed
6b80db2
rdr: document the process of hashing new fields added to CrateRoot
susitsm
committed
7febaad
rdr: document hashed_lazy_array
susitsm
committed
9b56a20
rdr: hash spans as if they had no parents (spans are encoded into the rmeta without parents)
susitsm
committed
fdfad53
rdr: add the public_api_hash query. Queries provided by rmeta now depend on public_api_hash instead of crate_hash
susitsm
committed
1bee02e
rdr: add rustc_public_hash_unchanged and rustc_public_hash_changed attributes for testing
susitsm
committed
f6ab77a
rdr: add incremental test exercising rustc_public_hash_changed and rustc_public_hash_unchanged attributes
susitsm
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1370a70
rdr: use public_api_hash when hashing dependencies
susitsm
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f592903
rdr: use public_api_hash in the rmeta headers
susitsm
committed
82246ed
rdr: move the hashes to crate header, properly handle private and public hashes in the resolver
susitsm
committed
a2b7c4d
rdr: add hash FIXME comments to LazyTables fields
susitsm
committed
24d7c2b
rdr-perf: make encode_crate_root const generic over public api hashing
susitsm
committed
eac3fce
rdr-perf: always inline public api hashing functions
susitsm
committed
6771a36
rdr-perf: reduce code size of parentless span stable hashing
susitsm
committed
972c942
perf: merge span hi and lo hashing
susitsm
committed
aeee21f
rdr-perf: only check rdr test attributes when the query_dep_graph option is enabled
susitsm
committed
91e5ab8
rdr-perf: skip query calls when public api hashing is disabled
susitsm
committed
d4a9c1a
rdr-perf: make sure record! macros do not duplicate query invocations
susitsm
committed
7b58439
merge stable_hash_span and stable_hash_span_data
susitsm
committed
673ed4b
rdr-perf: make StableHashState generic over HASH_SPANS_AS_PARENTLESS
susitsm
committed
f5bb135

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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 28 commits into
rust-lang:mainfrom
susitsm:relink-dont-rebuild-base

Commits on Jun 8, 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

rdr-perf: always inline public api hashing functions

rdr-perf: reduce code size of parentless span stable hashing

perf: merge span hi and lo hashing

rdr-perf: only check rdr test attributes when the query_dep_graph option is enabled

rdr-perf: skip query calls when public api hashing is disabled

rdr-perf: make sure record! macros do not duplicate query invocations

merge stable_hash_span and stable_hash_span_data

rdr-perf: make StableHashState generic over HASH_SPANS_AS_PARENTLESS