Changeset 19631 in webkit for trunk/JavaScriptCore/wtf/VectorTraits.h

Timestamp:

Feb 14, 2007, 3:42:44 PM (18 years ago)

Author:

andersca

Message:

Reviewed by Darin.

Add new canCompareWithMemcmp vector trait and use it to determine whether
operator== can use memcmp.

• wtf/Vector.h: (WTF::): (WTF::VectorTypeOperations::compare): (WTF::operator==):
• wtf/VectorTraits.h: (WTF::):

File:

• trunk/JavaScriptCore/wtf/VectorTraits.h (modified) (4 diffs)

trunk/JavaScriptCore/wtf/VectorTraits.h

@@ -61 +61 @@
         static const bool canCopyWithMemcpy = false;
         static const bool canFillWithMemset = false;
+        static const bool canCompareWithMemcmp = false;
     };
 
@@ -72 +73 @@
         static const bool canCopyWithMemcpy = true;
         static const bool canFillWithMemset = sizeof(T) == sizeof(char);
+        static const bool canCompareWithMemcmp = true;
     };
 
@@ -85 +87 @@
         static const bool canCopyWithMemcpy = false;
         static const bool canFillWithMemset = false;
+        static const bool canCompareWithMemcmp = true;
     };
 
@@ -104 +107 @@
         static const bool canCopyWithMemcpy = FirstTraits::canCopyWithMemcpy && SecondTraits::canCopyWithMemcpy;
         static const bool canFillWithMemset = false;
+        static const bool canCompareWithMemcmp = FirstTraits::canCompareWithMemcmp && SecondTraits::canCompareWithMemcmp;
     };