Fix endianness in constant handling

When running on a big-endian system, we need to convert the constant values
into big-endian once and then it's possible to access them directly.

Change-Id: I655bad7b7734e3b95e79e5f688f0b4041d0c41c4
Reviewed-by: Erik Verbruggen <erik.verbruggen@qt.io>

1 files changed, 5 insertions, 2 deletions

diff --git a/src/qml/compiler/qv4compileddata_p.h b/src/qml/compiler/qv4compileddata_p.h
index 519708f089..1f253e02fd 100644
--- a/src/qml/compiler/qv4compileddata_p.h
+++ b/src/qml/compiler/qv4compileddata_p.h
@@ -691,8 +691,8 @@ struct Unit
     const RegExp *regexpAt(int index) const {
         return reinterpret_cast<const RegExp*>(reinterpret_cast<const char *>(this) + offsetToRegexpTable + index * sizeof(RegExp));
     }
-    const QV4::Value *constants() const {
-        return reinterpret_cast<const QV4::Value*>(reinterpret_cast<const char *>(this) + offsetToConstantTable);
+    const LEUInt64 *constants() const {
+        return reinterpret_cast<const LEUInt64*>(reinterpret_cast<const char *>(this) + offsetToConstantTable);
     }
 
     const JSClassMember *jsClassAt(int idx, int *nMembers) const {
@@ -853,6 +853,9 @@ struct Q_QML_PRIVATE_EXPORT CompilationUnit : public QQmlRefCount
     QHash<int, IdentifierHash<int>> namedObjectsPerComponentCache;
     IdentifierHash<int> namedObjectsPerComponent(int componentObjectIndex);
 
+    // pointers either to data->constants() or little-endian memory copy.
+    const Value* constants;
+
     void finalize(QQmlEnginePrivate *engine);
 
     int totalBindingsCount; // Number of bindings used in this type