INSN2             652 src/code.c             PUT(INSN2(SCM_VM_LREF, arg0, arg1), SCM_FALSE);
INSN2             676 src/code.c             case SCM_VM_LREF:   SUB(INSN2(SCM_VM_LREF_PUSH,
INSN2             841 src/code.c         case 2: PUT(INSN2(code, arg0, arg1), operand); break;