Imported WebKit commit eb5c1b8fe4d4b1b90b5137433fc58a91da0e6878 (http://svn.webkit.org/repository/webkit/trunk@118516)

1 files changed, 15 insertions, 0 deletions

diff --git a/Source/JavaScriptCore/bytecode/DFGExitProfile.h b/Source/JavaScriptCore/bytecode/DFGExitProfile.h
index 31db084f5..09f9ee075 100644
--- a/Source/JavaScriptCore/bytecode/DFGExitProfile.h
+++ b/Source/JavaScriptCore/bytecode/DFGExitProfile.h
@@ -39,6 +39,7 @@ enum ExitKind {
     Overflow, // We exited because of overflow.
     NegativeZero, // We exited because we encountered negative zero.
     InadequateCoverage, // We exited because we ended up in code that didn't have profiling coverage.
+    ArgumentsEscaped, // We exited because arguments escaped but we didn't expect them to.
     Uncountable, // We exited for none of the above reasons, and we should not count it. Most uses of this should be viewed as a FIXME.
 };
 
@@ -96,6 +97,15 @@ public:
         ASSERT(exitKindIsCountable(kind));
     }
     
+    // Use this constructor if you wish for the exit site to be counted globally within its
+    // code block.
+    explicit FrequentExitSite(ExitKind kind)
+        : m_bytecodeOffset(0)
+        , m_kind(kind)
+    {
+        ASSERT(exitKindIsCountable(kind));
+    }
+    
     bool operator!() const
     {
         return m_kind == ExitKindUnset;
@@ -178,6 +188,11 @@ public:
         return m_frequentExitSites.find(site) != m_frequentExitSites.end();
     }
     
+    bool hasExitSite(ExitKind kind) const
+    {
+        return hasExitSite(FrequentExitSite(kind));
+    }
+    
     bool hasExitSite(unsigned bytecodeIndex, ExitKind kind) const
     {
         return hasExitSite(FrequentExitSite(bytecodeIndex, kind));