Revert of [intrinsic] Drop the %_ValueOf intrinsic.

src/runtime/runtime-numbers.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/base/bits.h"
 #include "src/bootstrapper.h"
 #include "src/codegen.h"
 #include "src/isolate-inl.h"
 
 namespace v8 {
 namespace internal {
 
+RUNTIME_FUNCTION(Runtime_NumberToRadixString) {
+  HandleScope scope(isolate);
+  DCHECK(args.length() == 2);
+  CONVERT_SMI_ARG_CHECKED(radix, 1);
+  CHECK(2 <= radix && radix <= 36);
+
+  // Fast case where the result is a one character string.
+  if (args[0]->IsSmi()) {
+    int value = args.smi_at(0);
+    if (value >= 0 && value < radix) {
+      // Character array used for conversion.
+      static const char kCharTable[] = "0123456789abcdefghijklmnopqrstuvwxyz";
+      return *isolate->factory()->LookupSingleCharacterStringFromCode(
+          kCharTable[value]);
+    }
+  }
+
+  // Slow case.
+  CONVERT_DOUBLE_ARG_CHECKED(value, 0);
+  if (std::isnan(value)) {
+    return isolate->heap()->nan_string();
+  }
+  if (std::isinf(value)) {
+    if (value < 0) {
+      return isolate->heap()->minus_infinity_string();
+    }
+    return isolate->heap()->infinity_string();
+  }
+  char* str = DoubleToRadixCString(value, radix);
+  Handle<String> result = isolate->factory()->NewStringFromAsciiChecked(str);
+  DeleteArray(str);
+  return *result;
+}
+
+
+RUNTIME_FUNCTION(Runtime_NumberToFixed) {
+  HandleScope scope(isolate);
+  DCHECK(args.length() == 2);
+
+  CONVERT_DOUBLE_ARG_CHECKED(value, 0);
+  CONVERT_DOUBLE_ARG_CHECKED(f_number, 1);
+  int f = FastD2IChecked(f_number);
+  // See DoubleToFixedCString for these constants:
+  CHECK(f >= 0 && f <= 20);
+  CHECK(!Double(value).IsSpecial());
+  char* str = DoubleToFixedCString(value, f);
+  Handle<String> result = isolate->factory()->NewStringFromAsciiChecked(str);
+  DeleteArray(str);
+  return *result;
+}
+
+
+RUNTIME_FUNCTION(Runtime_NumberToExponential) {
+  HandleScope scope(isolate);
+  DCHECK(args.length() == 2);
+
+  CONVERT_DOUBLE_ARG_CHECKED(value, 0);
+  CONVERT_DOUBLE_ARG_CHECKED(f_number, 1);
+  int f = FastD2IChecked(f_number);
+  CHECK(f >= -1 && f <= 20);
+  CHECK(!Double(value).IsSpecial());
+  char* str = DoubleToExponentialCString(value, f);
+  Handle<String> result = isolate->factory()->NewStringFromAsciiChecked(str);
+  DeleteArray(str);
+  return *result;
+}
+
+
+RUNTIME_FUNCTION(Runtime_NumberToPrecision) {
+  HandleScope scope(isolate);
+  DCHECK(args.length() == 2);
+
+  CONVERT_DOUBLE_ARG_CHECKED(value, 0);
+  CONVERT_DOUBLE_ARG_CHECKED(f_number, 1);
+  int f = FastD2IChecked(f_number);
+  CHECK(f >= 1 && f <= 21);
+  CHECK(!Double(value).IsSpecial());
+  char* str = DoubleToPrecisionCString(value, f);
+  Handle<String> result = isolate->factory()->NewStringFromAsciiChecked(str);
+  DeleteArray(str);
+  return *result;
+}
+
+
 RUNTIME_FUNCTION(Runtime_IsValidSmi) {
   SealHandleScope shs(isolate);
   DCHECK(args.length() == 1);
 
   CONVERT_NUMBER_CHECKED(int32_t, number, Int32, args[0]);
   return isolate->heap()->ToBoolean(Smi::IsValid(number));
 }
 
 
 RUNTIME_FUNCTION(Runtime_StringToNumber) {
@@ skipping 191 matching lines @@
 
 RUNTIME_FUNCTION(Runtime_GetHoleNaNLower) {
   HandleScope scope(isolate);
   DCHECK(args.length() == 0);
   return *isolate->factory()->NewNumberFromUint(kHoleNanLower32);
 }
 
 
 }  // namespace internal
 }  // namespace v8