perf(object): remove the derivable object_type and field_count header words (56 B -> 48 B) [HELD on #8125] - #8122

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proggeramlug wants to merge 9 commits into

PerryTS:mainfrom

proggeramlug:perf/8113-object-header-shrink

Commits on Aug 15, 2026

perf(object): remove the derivable object_type and field_count header words (56 B -> 48 B)
Ralph Küpper
committed
f8f2ade
test(object): pin the 48/96-byte footprint and the exact header offsets
Ralph Küpper
committed
3fa2f7b
perf(object): stop paying two shape-table probes per bound read
Ralph Küpper
committed
69a4014
perf(object): delete the ShapeId->count memo — measured null
Ralph Küpper
committed
2b9d72b
chore(object): drop the unused object_inline_alloc_limit helper
Ralph Küpper
committed
677af75
docs(changelog): record the measured corpus result for #8113
Ralph Küpper
committed
27120c8
perf(proxy): stop re-deriving a GcHeader the store-plan gate already holds
Ralph Küpper
committed
599fe97
Revert "perf(proxy): stop re-deriving a GcHeader the store-plan gate already holds"
Ralph Küpper
committed
221a6c6
docs(changelog): record where the residual instruction cost is, and the zero
Ralph Küpper
committed
4829f0b