KOS_OP_FAST_FORMAT_CONST

• Style: EXTRA (FASTVAR, CONST). Row = obj slot, rules string (pool).

• Stack: As VAR_FORMAT_CONST, with the object loaded from its fast slot.

• Compiler form: Post-compile only: the convert_fast lowering of VAR_FORMAT_CONST when the name has a fast slot.

• Implementation: koskari/lib/opcode/FAST_FORMAT_CONST.c