2008-07-02 Geoffrey Garen <ggaren@apple.com>
Reviewed by Oliver Hunt.
Optimized a[n] get for cases where a is an array or a string, and a[n]
put for cases where a is an array.
SunSpider says 9.0% faster.
git-svn-id: http://svn.webkit.org/repository/webkit/trunk@34964 268f45cc-cd09-0410-ab3c-d52691b4dbfc
diff --git a/JavaScriptCore/VM/Machine.h b/JavaScriptCore/VM/Machine.h
index 38c97af..228cf04 100644
--- a/JavaScriptCore/VM/Machine.h
+++ b/JavaScriptCore/VM/Machine.h
@@ -29,6 +29,8 @@
#ifndef Machine_h
#define Machine_h
+#include "JSCell.h"
+#include "JSValue.h"
#include "Opcode.h"
#include "RegisterFile.h"
#include <kjs/list.h>
@@ -140,6 +142,9 @@
JSValue* checkTimeout(JSGlobalObject*);
void resetTimeoutCheck();
+ bool isJSArray(JSValue* v) { return !JSImmediate::isImmediate(v) && v->asCell()->vptr() == m_jsArrayVptr; }
+ bool isJSString(JSValue* v) { return !JSImmediate::isImmediate(v) && v->asCell()->vptr() == m_jsStringVptr; }
+
int m_reentryDepth;
unsigned m_timeoutTime;
unsigned m_timeAtLastCheckTimeout;
@@ -148,6 +153,9 @@
unsigned m_ticksUntilNextTimeoutCheck;
RegisterFile m_registerFile;
+
+ void* m_jsArrayVptr;
+ void* m_jsStringVptr;
#if HAVE(COMPUTED_GOTO)
Opcode m_opcodeTable[numOpcodeIDs]; // Maps OpcodeID => Opcode for compiling
