py: Add "default" to switches to allow better code flow analysis.
This helps compiler produce smaller code. Saves 124 bytes on stmhal and
bare-arm.
diff --git a/py/parse.c b/py/parse.c
index 6d2108d..c60bbb1 100644
--- a/py/parse.c
+++ b/py/parse.c
@@ -456,11 +456,13 @@
}
break;
case RULE_ARG_RULE:
+ rule_or_no_other_choice:
push_rule(&parser, rule_src_line, rule, i + 1); // save this or-rule
push_rule_from_arg(&parser, rule->arg[i]); // push child of or-rule
goto next_rule;
default:
assert(0);
+ goto rule_or_no_other_choice; // to help flow control analysis
}
}
if ((rule->arg[i] & RULE_ARG_KIND_MASK) == RULE_ARG_TOK) {
@@ -520,14 +522,16 @@
}
}
break;
- }
+ }
case RULE_ARG_RULE:
case RULE_ARG_OPT_RULE:
+ rule_and_no_other_choice:
push_rule(&parser, rule_src_line, rule, i + 1); // save this and-rule
push_rule_from_arg(&parser, rule->arg[i]); // push child of and-rule
goto next_rule;
default:
assert(0);
+ goto rule_and_no_other_choice; // to help flow control analysis
}
}
@@ -674,11 +678,13 @@
}
break;
case RULE_ARG_RULE:
+ rule_list_no_other_choice:
push_rule(&parser, rule_src_line, rule, i + 1); // save this list-rule
push_rule_from_arg(&parser, arg); // push child of list-rule
goto next_rule;
default:
assert(0);
+ goto rule_list_no_other_choice; // to help flow control analysis
}
}
}