Shrink size of LiteralParserToken from 24 bytes from 16 bytes.

https://bugs.webkit.org/show_bug.cgi?id=256057 Reviewed by Geoffrey Garen. Shrink size of LiteralParserToken from 24 bytes from 16 bytes, by re-ordering data members for better bit packing. * Source/JavaScriptCore/runtime/LiteralParser.h: Canonical link: https://commits.webkit.org/263477@main
WebKit · Apr 28, 2023 · 1f5d2a1 · 1f5d2a1
1 parent 353f4a5
commit 1f5d2a1
Showing 1 changed file with 5 additions and 9 deletions.
diff --git a/Source/JavaScriptCore/runtime/LiteralParser.h b/Source/JavaScriptCore/runtime/LiteralParser.h
@@ -74,17 +74,13 @@ WTF_MAKE_NONCOPYABLE(LiteralParserToken);
     LiteralParserToken() = default;
 
     TokenType type;
+    unsigned stringIs8Bit : 1; // Only used for TokString.
+    unsigned stringOrIdentifierLength : 31;
     union {
         double numberToken; // Only used for TokNumber.
-        struct {
-            union {
-                const CharType* identifierStart;
-                const LChar* stringStart8;
-                const UChar* stringStart16;
-            };
-            unsigned stringIs8Bit : 1; // Only used for TokString.
-            unsigned stringOrIdentifierLength : 31;
-        };
+        const CharType* identifierStart;
+        const LChar* stringStart8;
+        const UChar* stringStart16;
     };
 };