Allow the optimizing code generator to call Math.pow with untagged doubles.

src/objects.h

 // Copyright 2010 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 3711 matching lines @@
   kMathCeil = 3,
   kMathAbs = 4,
   kMathLog = 5,
   kMathSin = 6,
   kMathCos = 7,
   kMathTan = 8,
   kMathASin = 9,
   kMathACos = 0xa,
   kMathATan = 0xb,
   kMathExp = 0xc,
-  kMathSqrt = 0xd
+  kMathSqrt = 0xd,
+  kMathPow = 0xe,
+  kMathPowHalf = 0xf
 };
 
 
 // SharedFunctionInfo describes the JSFunction information that can be
 // shared by multiple instances of the function.
 class SharedFunctionInfo: public HeapObject {
  public:
   // [name]: Function name.
   DECL_ACCESSORS(name, Object)
 
@@ skipping 404 matching lines @@
   static const int kIsExpressionBit = 0;
   static const int kIsTopLevelBit   = 1;
   static const int kStartPositionShift = 2;
   static const int kStartPositionMask = ~((1 << kStartPositionShift) - 1);
 
   // Bit positions in compiler_hints.
   static const int kHasOnlySimpleThisPropertyAssignments = 0;
   static const int kTryFullCodegen = 1;
   static const int kAllowLazyCompilation = 2;
   static const int kMathFunctionShift = 3;
-  static const int kMathFunctionMask = 0xf;
-  static const int kLiveObjectsMayExist = 7;
-  static const int kCodeAgeShift = 8;
+  static const int kMathFunctionMask = 0x1f;
+  static const int kLiveObjectsMayExist = 8;
+  static const int kCodeAgeShift = 9;
   static const int kCodeAgeMask = 0x7;
-  static const int kOptimizationDisabled = 11;
+  static const int kOptimizationDisabled = 12;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(SharedFunctionInfo);
 };
 
 
 // JSFunction describes JavaScript functions.
 class JSFunction: public JSObject {
  public:
   // [prototype_or_initial_map]:
   DECL_ACCESSORS(prototype_or_initial_map, Object)
@@ skipping 1927 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_