From cd44dc59cdfc39534aef4d417e9f3c412e3be139 Mon Sep 17 00:00:00 2001
From: Simon Hausmann <simon.hausmann@nokia.com>
Date: Fri, 3 Feb 2012 09:55:33 +0100
Subject: Imported WebKit commit fce473cb4d55aa9fe9d0b0322a2fffecb731b961
 (http://svn.webkit.org/repository/webkit/trunk@106560)

---
 Source/JavaScriptCore/bytecode/CodeOrigin.h | 24 ++++++++++++++++--------
 1 file changed, 16 insertions(+), 8 deletions(-)

(limited to 'Source/JavaScriptCore/bytecode/CodeOrigin.h')

diff --git a/Source/JavaScriptCore/bytecode/CodeOrigin.h b/Source/JavaScriptCore/bytecode/CodeOrigin.h
index 7b6ce7d48..25a116c55 100644
--- a/Source/JavaScriptCore/bytecode/CodeOrigin.h
+++ b/Source/JavaScriptCore/bytecode/CodeOrigin.h
@@ -38,29 +38,37 @@ class ExecutableBase;
 class JSFunction;
 
 struct CodeOrigin {
-    uint32_t bytecodeIndex;
+    // Bytecode offset that you'd use to re-execute this instruction.
+    unsigned bytecodeIndex : 29;
+    // Bytecode offset corresponding to the opcode that gives the result (needed to handle
+    // op_call/op_call_put_result and op_method_check/op_get_by_id).
+    unsigned valueProfileOffset : 3;
+    
     InlineCallFrame* inlineCallFrame;
     
     CodeOrigin()
         : bytecodeIndex(std::numeric_limits<uint32_t>::max())
+        , valueProfileOffset(0)
         , inlineCallFrame(0)
     {
     }
     
-    explicit CodeOrigin(uint32_t bytecodeIndex)
-        : bytecodeIndex(bytecodeIndex)
-        , inlineCallFrame(0)
-    {
-    }
-    
-    explicit CodeOrigin(uint32_t bytecodeIndex, InlineCallFrame* inlineCallFrame)
+    explicit CodeOrigin(unsigned bytecodeIndex, InlineCallFrame* inlineCallFrame = 0, unsigned valueProfileOffset = 0)
         : bytecodeIndex(bytecodeIndex)
+        , valueProfileOffset(valueProfileOffset)
         , inlineCallFrame(inlineCallFrame)
     {
+        ASSERT(bytecodeIndex < (1u << 29));
+        ASSERT(valueProfileOffset < (1u << 3));
     }
     
     bool isSet() const { return bytecodeIndex != std::numeric_limits<uint32_t>::max(); }
     
+    unsigned bytecodeIndexForValueProfile() const
+    {
+        return bytecodeIndex + valueProfileOffset;
+    }
+    
     // The inline depth is the depth of the inline stack, so 1 = not inlined,
     // 2 = inlined one deep, etc.
     unsigned inlineDepth() const;
-- 
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