Do not eagerly update allow_osr_at_loop_nesting_level.

src/globals.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_GLOBALS_H_
 #define V8_GLOBALS_H_
 
 #include "include/v8stdint.h"
 
 #include "src/base/build_config.h"
@@ skipping 128 matching lines @@
 const int kIntptrSize    = sizeof(intptr_t);  // NOLINT
 const int kPointerSize   = sizeof(void*);     // NOLINT
 const int kRegisterSize  = kPointerSize;
 const int kPCOnStackSize = kRegisterSize;
 const int kFPOnStackSize = kRegisterSize;
 
 const int kDoubleSizeLog2 = 3;
 
 #if V8_HOST_ARCH_64_BIT
 const int kPointerSizeLog2 = 3;
+const int kIntSizeLog2 = 3;

[Jakob Kummerow, 2014/06/23 15:29:23]

are you sure about this? I can haz STATIC_ASSERT(kIntSize == (1 <<
kIntSizeLog2))?

 const intptr_t kIntptrSignBit = V8_INT64_C(0x8000000000000000);
 const uintptr_t kUintptrAllBitsSet = V8_UINT64_C(0xFFFFFFFFFFFFFFFF);
 const bool kRequiresCodeRange = true;
 const size_t kMaximalCodeRangeSize = 512 * MB;
 #else
 const int kPointerSizeLog2 = 2;
+const int kIntSizeLog2 = 2;
 const intptr_t kIntptrSignBit = 0x80000000;
 const uintptr_t kUintptrAllBitsSet = 0xFFFFFFFFu;
 const bool kRequiresCodeRange = false;
 const size_t kMaximalCodeRangeSize = 0 * MB;
 #endif
 
 const int kBitsPerByte = 8;
 const int kBitsPerByteLog2 = 3;
 const int kBitsPerPointer = kPointerSize * kBitsPerByte;
 const int kBitsPerInt = kIntSize * kBitsPerByte;
@@ skipping 590 matching lines @@
 enum MinusZeroMode {
   TREAT_MINUS_ZERO_AS_ZERO,
   FAIL_ON_MINUS_ZERO
 };
 
 } }  // namespace v8::internal
 
 namespace i = v8::internal;
 
 #endif  // V8_GLOBALS_H_