[turbofan] Turn Math.clz32 into an inlinable builtin.

src/counters.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_COUNTERS_H_
 #define V8_COUNTERS_H_
 
 #include "include/v8.h"
 #include "src/allocation.h"
 #include "src/base/platform/elapsed-timer.h"
@@ skipping 552 matching lines @@
   SC(string_compare_native, V8.StringCompareNative)                            \
   SC(string_compare_runtime, V8.StringCompareRuntime)                          \
   SC(regexp_entry_runtime, V8.RegExpEntryRuntime)                              \
   SC(regexp_entry_native, V8.RegExpEntryNative)                                \
   SC(number_to_string_native, V8.NumberToStringNative)                         \
   SC(number_to_string_runtime, V8.NumberToStringRuntime)                       \
   SC(math_acos, V8.MathAcos)                                                   \
   SC(math_asin, V8.MathAsin)                                                   \
   SC(math_atan, V8.MathAtan)                                                   \
   SC(math_atan2, V8.MathAtan2)                                                 \
+  SC(math_clz32, V8.MathClz32)                                                 \
   SC(math_exp, V8.MathExp)                                                     \
   SC(math_floor, V8.MathFloor)                                                 \
   SC(math_log, V8.MathLog)                                                     \
   SC(math_pow, V8.MathPow)                                                     \
   SC(math_round, V8.MathRound)                                                 \
   SC(math_sqrt, V8.MathSqrt)                                                   \
   SC(stack_interrupts, V8.StackInterrupts)                                     \
   SC(runtime_profiler_ticks, V8.RuntimeProfilerTicks)                          \
   SC(bounds_checks_eliminated, V8.BoundsChecksEliminated)                      \
   SC(bounds_checks_hoisted, V8.BoundsChecksHoisted)                            \
@@ skipping 187 matching lines @@
   friend class Isolate;
 
   explicit Counters(Isolate* isolate);
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(Counters);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_COUNTERS_H_