webkitgtk-2.12.3webkitgtk-2.12.3

1 files changed, 6 insertions, 17 deletions

diff --git a/Source/JavaScriptCore/bytecode/FullBytecodeLiveness.h b/Source/JavaScriptCore/bytecode/FullBytecodeLiveness.h
index d34392121..b22198a00 100644
--- a/Source/JavaScriptCore/bytecode/FullBytecodeLiveness.h
+++ b/Source/JavaScriptCore/bytecode/FullBytecodeLiveness.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2013 Apple Inc. All rights reserved.
+ * Copyright (C) 2013, 2015 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -35,33 +35,22 @@ class BytecodeLivenessAnalysis;
 typedef HashMap<unsigned, FastBitVector, WTF::IntHash<unsigned>, WTF::UnsignedWithZeroKeyHashTraits<unsigned>> BytecodeToBitmapMap;
 
 class FullBytecodeLiveness {
+    WTF_MAKE_FAST_ALLOCATED;
 public:
-    FullBytecodeLiveness() : m_codeBlock(0) { }
-    
-    // We say "out" to refer to the bitvector that contains raw results for a bytecode
-    // instruction.
-    const FastBitVector& getOut(unsigned bytecodeIndex) const
+    const FastBitVector& getLiveness(unsigned bytecodeIndex) const
     {
-        BytecodeToBitmapMap::const_iterator iter = m_map.find(bytecodeIndex);
-        ASSERT(iter != m_map.end());
-        return iter->value;
+        return m_map[bytecodeIndex];
     }
     
     bool operandIsLive(int operand, unsigned bytecodeIndex) const
     {
-        return operandIsAlwaysLive(m_codeBlock, operand) || operandThatIsNotAlwaysLiveIsLive(m_codeBlock, getOut(bytecodeIndex), operand);
-    }
-    
-    FastBitVector getLiveness(unsigned bytecodeIndex) const
-    {
-        return getLivenessInfo(m_codeBlock, getOut(bytecodeIndex));
+        return operandIsAlwaysLive(operand) || operandThatIsNotAlwaysLiveIsLive(getLiveness(bytecodeIndex), operand);
     }
     
 private:
     friend class BytecodeLivenessAnalysis;
     
-    CodeBlock* m_codeBlock;
-    BytecodeToBitmapMap m_map;
+    Vector<FastBitVector, 0, UnsafeVectorOverflow> m_map;
 };
 
 } // namespace JSC