Number() of an optional string element read no longer boxes string | undefined
into a dynamic value: plain-operand reads test the slot state and convert the
element with num.fromString, answering NaN for missing slots.
Read-only fallbacks (get_f64/bool/number, state, has, borrow) carry
memory(read, inaccessiblemem: readwrite) at the call site and the guard loads
the storage bases before branching, so LLVM hoists header loads out of
loops. Conditions on number[]/boolean[] element reads no longer box
T | undefined: numbers reuse getNumber (missing is NaN, falsy like undefined),
booleans test the slot state then read the value.
Strict element reads (scr_arr_get_f64/bool/ref, borrow), scr_arr_get_number,
scr_arr_state/has and element writes (scr_arr_set_f64/bool/ref) now check
inline for a canonical integer index inside dense storage (below cap, and
below len for reads, present-value state for strict reads) and load or
store the slot directly. Every other case calls the unchanged runtime entry
with a cold call-site attribute. Proven integers (exactInteger) skip the
double round-trip. for...of also reads the length inline.
Malte Ubl