feat(v4.0.0): the DO loop runtimes

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(DO) (?DO) (LOOP) (+LOOP) (LEAVE) I J UNLOOP and (0BRANCH), laid down
in line by hand as the compiler will, executed on the golden model at
both cell widths against C on every pair of 14 loop ends and 11 steps,
and against sequences recorded from the v3 binary.

(LOOP) goes round again while index < limit, signed, as v3 does; the
document's equality test differed whenever start >= limit.  (+LOOP) is
now specified.  J keeps the outer index in A and needs no extra return
entry.

LEAVE discards the limit and index.  v3 left them on its return stack,
which made a LEAVE in an inner loop stop the outer one.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

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rajames

2026-10-03 20:13:24 -04:00

co-authored by Claude Opus 5.5

parent 481d484e93

commit 03d8d991ef

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v4/tests/test_loops.c

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