[builtins] Migrate Math.log to TurboFan.

src/runtime/runtime-maths.cc

 // Copyright 2014 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.
 
 #include "src/runtime/runtime-utils.h"
 
 #include "src/arguments.h"
 #include "src/assembler.h"
 #include "src/base/utils/random-number-generator.h"
 #include "src/bootstrapper.h"
 #include "src/codegen.h"
 #include "src/third_party/fdlibm/fdlibm.h"
 
 namespace v8 {
 namespace internal {
 
-#define RUNTIME_UNARY_MATH(Name, name)                         \
-  RUNTIME_FUNCTION(Runtime_Math##Name) {                       \
-    HandleScope scope(isolate);                                \
-    DCHECK(args.length() == 1);                                \
-    isolate->counters()->math_##name##_runtime()->Increment(); \
-    CONVERT_DOUBLE_ARG_CHECKED(x, 0);                          \
-    return *isolate->factory()->NewHeapNumber(std::name(x));   \
-  }
-
-RUNTIME_UNARY_MATH(LogRT, log)
-#undef RUNTIME_UNARY_MATH
-
-
 RUNTIME_FUNCTION(Runtime_DoubleHi) {
   HandleScope scope(isolate);
   DCHECK(args.length() == 1);
   CONVERT_DOUBLE_ARG_CHECKED(x, 0);
   uint64_t unsigned64 = double_to_uint64(x);
   uint32_t unsigned32 = static_cast<uint32_t>(unsigned64 >> 32);
   int32_t signed32 = bit_cast<int32_t, uint32_t>(unsigned32);
   return *isolate->factory()->NewNumber(signed32);
 }
 
@@ skipping 160 matching lines @@
     base::RandomNumberGenerator::XorShift128(&state0, &state1);
     array[i] = base::RandomNumberGenerator::ToDouble(state0, state1);
   }
   // Persist current state.
   array[kState0Offset] = uint64_to_double(state0);
   array[kState1Offset] = uint64_to_double(state1);
   return *typed_array;
 }
 }  // namespace internal
 }  // namespace v8