Fix magic-string generation (#4751)

In some cases the magic-string generator creates conditions like: A || !A . These conditions can be simplified. JerryScript-DCO-1.0-Signed-off-by: Gergo Csizi csgergo92@gmail.com
2021-10-15 19:09:04 +02:00
parent d4231e7251
commit fe3a5c08b2
2 changed files with 14 additions and 41 deletions
@@ -176,6 +176,11 @@ def calculate_magic_string_guards(defs, uses, debug=False):
        for i, guard_i in enumerate(guards):
            if guard_i is None:
                continue
+            for guard in guard_i.copy():
+                neg_guard = "!(" + guard[1:] + ")"
+                for guard_j in guards:
+                    if guard_j is not None and neg_guard in guard_j:
+                        guard_i.remove(guard)
            for j, guard_j in enumerate(guards):
                if j == i or guard_j is None:
                    continue