JavaScriptCore-7600.1.4.9.tar.gz

[apple/javascriptcore.git] / dfg / DFGCommonData.cpp

diff --git a/dfg/DFGCommonData.cpp b/dfg/DFGCommonData.cpp
new file mode 100644 (file)
index 0000000..ad4d09d
--- /dev/null
+++ b/dfg/DFGCommonData.cpp
@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2013 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+ */
+
+#include "config.h"
+#include "DFGCommonData.h"
+
+#if ENABLE(DFG_JIT)
+
+#include "CodeBlock.h"
+#include "DFGNode.h"
+#include "DFGPlan.h"
+#include "JSCInlines.h"
+#include "VM.h"
+
+namespace JSC { namespace DFG {
+
+void CommonData::notifyCompilingStructureTransition(Plan& plan, CodeBlock* codeBlock, Node* node)
+{
+    plan.transitions.addLazily(
+        codeBlock,
+        node->origin.semantic.codeOriginOwner(),
+        node->structureTransitionData().previousStructure,
+        node->structureTransitionData().newStructure);
+}
+
+unsigned CommonData::addCodeOrigin(CodeOrigin codeOrigin)
+{
+    if (codeOrigins.isEmpty()
+        || codeOrigins.last() != codeOrigin)
+        codeOrigins.append(codeOrigin);
+    unsigned index = codeOrigins.size() - 1;
+    ASSERT(codeOrigins[index] == codeOrigin);
+    return index;
+}
+
+void CommonData::shrinkToFit()
+{
+    codeOrigins.shrinkToFit();
+    weakReferences.shrinkToFit();
+    transitions.shrinkToFit();
+}
+
+bool CommonData::invalidate()
+{
+    if (!isStillValid)
+        return false;
+    for (unsigned i = jumpReplacements.size(); i--;)
+        jumpReplacements[i].fire();
+    isStillValid = false;
+    return true;
+}
+
+} } // namespace JSC::DFG
+
+#endif // ENABLE(DFG_JIT)
+