From a4e969f4965059196ca948db781e52f7cfebf19e Mon Sep 17 00:00:00 2001
From: Lorry Tar Creator <lorry-tar-importer@lorry>
Date: Tue, 24 May 2016 08:28:08 +0000
Subject: webkitgtk-2.12.3

---
 Source/JavaScriptCore/bytecode/ArrayProfile.cpp | 42 ++++++++++++++++++++-----
 1 file changed, 34 insertions(+), 8 deletions(-)

(limited to 'Source/JavaScriptCore/bytecode/ArrayProfile.cpp')

diff --git a/Source/JavaScriptCore/bytecode/ArrayProfile.cpp b/Source/JavaScriptCore/bytecode/ArrayProfile.cpp
index 4c055fea5..b8ade2223 100644
--- a/Source/JavaScriptCore/bytecode/ArrayProfile.cpp
+++ b/Source/JavaScriptCore/bytecode/ArrayProfile.cpp
@@ -27,6 +27,7 @@
 #include "ArrayProfile.h"
 
 #include "CodeBlock.h"
+#include "JSCInlines.h"
 #include <wtf/CommaPrinter.h>
 #include <wtf/StringExtras.h>
 #include <wtf/StringPrintStream.h>
@@ -72,28 +73,53 @@ void dumpArrayModes(PrintStream& out, ArrayModes arrayModes)
         out.print(comma, "ArrayWithArrayStorage");
     if (arrayModes & asArrayModes(ArrayWithSlowPutArrayStorage))
         out.print(comma, "ArrayWithSlowPutArrayStorage");
+
+    if (arrayModes & Int8ArrayMode)
+        out.print(comma, "Int8ArrayMode");
+    if (arrayModes & Int16ArrayMode)
+        out.print(comma, "Int16ArrayMode");
+    if (arrayModes & Int32ArrayMode)
+        out.print(comma, "Int32ArrayMode");
+    if (arrayModes & Uint8ArrayMode)
+        out.print(comma, "Uint8ArrayMode");
+    if (arrayModes & Uint8ClampedArrayMode)
+        out.print(comma, "Uint8ClampedArrayMode");
+    if (arrayModes & Uint16ArrayMode)
+        out.print(comma, "Uint16ArrayMode");
+    if (arrayModes & Uint32ArrayMode)
+        out.print(comma, "Uint32ArrayMode");
+    if (arrayModes & Float32ArrayMode)
+        out.print(comma, "Float32ArrayMode");
+    if (arrayModes & Float64ArrayMode)
+        out.print(comma, "Float64ArrayMode");
 }
 
-void ArrayProfile::computeUpdatedPrediction(const ConcurrentJITLocker&, CodeBlock* codeBlock)
+void ArrayProfile::computeUpdatedPrediction(const ConcurrentJITLocker& locker, CodeBlock* codeBlock)
 {
-    if (!m_lastSeenStructure)
+    if (!m_lastSeenStructureID)
         return;
     
-    m_observedArrayModes |= arrayModeFromStructure(m_lastSeenStructure);
+    Structure* lastSeenStructure = codeBlock->heap()->structureIDTable().get(m_lastSeenStructureID);
+    computeUpdatedPrediction(locker, codeBlock, lastSeenStructure);
+    m_lastSeenStructureID = 0;
+}
+
+void ArrayProfile::computeUpdatedPrediction(const ConcurrentJITLocker&, CodeBlock* codeBlock, Structure* lastSeenStructure)
+{
+    m_observedArrayModes |= arrayModeFromStructure(lastSeenStructure);
     
     if (!m_didPerformFirstRunPruning
         && hasTwoOrMoreBitsSet(m_observedArrayModes)) {
-        m_observedArrayModes = arrayModeFromStructure(m_lastSeenStructure);
+        m_observedArrayModes = arrayModeFromStructure(lastSeenStructure);
         m_didPerformFirstRunPruning = true;
     }
     
     m_mayInterceptIndexedAccesses |=
-        m_lastSeenStructure->typeInfo().interceptsGetOwnPropertySlotByIndexEvenWhenLengthIsNotZero();
+        lastSeenStructure->typeInfo().interceptsGetOwnPropertySlotByIndexEvenWhenLengthIsNotZero();
     JSGlobalObject* globalObject = codeBlock->globalObject();
-    if (!globalObject->isOriginalArrayStructure(m_lastSeenStructure)
-        && !globalObject->isOriginalTypedArrayStructure(m_lastSeenStructure))
+    if (!globalObject->isOriginalArrayStructure(lastSeenStructure)
+        && !globalObject->isOriginalTypedArrayStructure(lastSeenStructure))
         m_usesOriginalArrayStructures = false;
-    m_lastSeenStructure = 0;
 }
 
 CString ArrayProfile::briefDescription(const ConcurrentJITLocker& locker, CodeBlock* codeBlock)
-- 
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