[builtins] Introduce proper base::ieee754::log.

src/crankshaft/hydrogen-instructions.cc

 // 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.
 
 #include "src/crankshaft/hydrogen-instructions.h"
 
 #include "src/base/bits.h"
+#include "src/base/ieee754.h"
 #include "src/base/safe_math.h"
 #include "src/crankshaft/hydrogen-infer-representation.h"
 #include "src/double.h"
 #include "src/elements.h"
 #include "src/factory.h"
 
 #if V8_TARGET_ARCH_IA32
 #include "src/crankshaft/ia32/lithium-ia32.h"  // NOLINT
 #elif V8_TARGET_ARCH_X64
 #include "src/crankshaft/x64/lithium-x64.h"  // NOLINT
@@ skipping 3400 matching lines @@
         default:
           UNREACHABLE();
           break;
       }
     }
     switch (op) {
       case kMathExp:
         lazily_initialize_fast_exp(isolate);
         return H_CONSTANT_DOUBLE(fast_exp(d, isolate));
       case kMathLog:
-        return H_CONSTANT_DOUBLE(std::log(d));
+        return H_CONSTANT_DOUBLE(base::ieee754::log(d));
       case kMathSqrt:
         lazily_initialize_fast_sqrt(isolate);
         return H_CONSTANT_DOUBLE(fast_sqrt(d, isolate));
       case kMathPowHalf:
         return H_CONSTANT_DOUBLE(power_double_double(d, 0.5));
       case kMathAbs:
         return H_CONSTANT_DOUBLE((d >= 0.0) ? d + 0.0 : -d);
       case kMathRound:
         // -0.5 .. -0.0 round to -0.0.
         if ((d >= -0.5 && Double(d).Sign() < 0)) return H_CONSTANT_DOUBLE(-0.0);
@@ skipping 592 matching lines @@
     case HObjectAccess::kExternalMemory:
       os << "[external-memory]";
       break;
   }
 
   return os << "@" << access.offset();
 }
 
 }  // namespace internal
 }  // namespace v8