Method dump

chapter21/src/test/java/com/seaofnodes/simple/Simple.java:85–129

(CodeGen code, int dump, int pass)

    }

    static void dump(CodeGen code, int dump, int pass) {
        if ((dump & pass) != 0) {
            if ((dump & DUMP_DOT) != 0) {
                String fn = switch (pass) {
                    case DUMP_AFTER_PARSE        -> "01-parse.dot";
                    case DUMP_AFTER_OPTO         -> "02-opto.dot";
                    case DUMP_AFTER_TYPE_CHECK   -> "03-type_check.dot";
                    case DUMP_AFTER_LOOP_TREE    -> "04-loop_tree.dot";
                    case DUMP_AFTER_INSTR_SELECT -> "05-instr_select.dot";
                    case DUMP_AFTER_GCM          -> "06-gcm.dot";
                    case DUMP_AFTER_LOCAL_SCHED  -> "07-local_sched.dot";
                    case DUMP_AFTER_REG_ALLOC    -> "08-reg_allos.dot";
                    case DUMP_AFTER_ENCODE       -> "09-local_sched.dot";
                    case DUMP_FINAL              -> "10-final.dot";
                    default                      -> throw Utils.TODO();
                };

                try {
                    Files.writeString(Path.of(fn),
                        new GraphVisualizer().generateDotOutput(code._stop, null, null));
                } catch(IOException e) {
                    System.err.println("ERROR: Cannot write DOT file");
                    System.exit(1);
                }
            } else {
                if ((dump & DUMP_PASS_NAME) != 0) {
                    System.err.println(switch (pass) {
                        case DUMP_AFTER_PARSE        -> "After Parse:";
                        case DUMP_AFTER_OPTO         -> "After OPTO:";
                        case DUMP_AFTER_TYPE_CHECK   -> "After Type Check:";
                        case DUMP_AFTER_LOOP_TREE    -> "After Loop Tree:";
                        case DUMP_AFTER_INSTR_SELECT -> "After Instruction Selection:";
                        case DUMP_AFTER_GCM          -> "After GCM:";
                        case DUMP_AFTER_LOCAL_SCHED  -> "After Local Scheduling:";
                        case DUMP_AFTER_REG_ALLOC    -> "After Register Allocation:";
                        case DUMP_AFTER_ENCODE       -> "After Instruction Encoding:";
                        case DUMP_FINAL              -> "Final:";
                        default                      -> throw Utils.TODO();
                    });
                }

                System.err.println(IRPrinter.prettyPrint(code._stop, 9999));
            }
        }
    }

    static void print_compilation_times(CodeGen code) {
        double t, total = 0;