A spans result (the compiler proved only some captures are read) used to
run the full per-capture decision for every group. Slots now start as
present undefined with a zero payload, and only the selected and lazy
capture bits are visited; full results visit every capture as before.
The hole-free prefix is measured after the fill.
String-array teardown keeps its storage pointers in registers across the
release calls (releasing a string runs no user code), and regex group
parseInt takes the short-decimal path inline (shared with
scr_parse_int_bytes as scr_parse_int_short_digits) with signed
conversions where the values are known to be far below 2^53.
scr_runtime.h now includes 48 module headers (scr_core.h, scr_rc.h,
scr_string.h, scr_dyn.h, scr_http.h, ...) in dependency order and holds no
declarations. Each module header holds whole sections of the former file,
includes the headers whose names it uses, and compiles on its own.
Declarations, macros, struct layouts and inline bodies are unchanged. Five
blocks move to join their module: the class-hierarchy vtable header (into
scr_error.h, after the string core), the node:timers/promises pair (into
scr_async.h), the JSON.parse entry points and the JSON output buffer (into
scr_json.h, after the dyn declarations) and the EventTarget block (after
scr_json.h). No moved block uses or declares a name that a block it moves
past uses or declares. The string methods keep their position after the
class objects in scr_string_methods.h, because their struct ScrDyn
parameters rely on the file-scope struct ScrDyn declaration there.
The runtime ABI scan reads scr_runtime.h with its module headers expanded
in include order. A runtime test compiles every module header on its own.
scripts/runtime-header-hunks.mjs retargets a diff of the single-file
header onto the module headers.
Malte Ubl