[builtins] Migrate Math.clz32 to a TurboFan builtin.

src/builtins.h

 // Copyright 2011 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_BUILTINS_H_
 #define V8_BUILTINS_H_
 
 #include "src/base/flags.h"
 #include "src/handles.h"
 
@@ skipping 290 matching lines @@
   V(StackCheck, BUILTIN, UNINITIALIZED, kNoExtraICState)                       \
                                                                                \
   V(MarkCodeAsToBeExecutedOnce, BUILTIN, UNINITIALIZED, kNoExtraICState)       \
   V(MarkCodeAsExecutedOnce, BUILTIN, UNINITIALIZED, kNoExtraICState)           \
   V(MarkCodeAsExecutedTwice, BUILTIN, UNINITIALIZED, kNoExtraICState)          \
   CODE_AGE_LIST_WITH_ARG(DECLARE_CODE_AGE_BUILTIN, V)
 
 // Define list of builtins implemented in TurboFan (with JS linkage).
 #define BUILTIN_LIST_T(V) \
   V(MathCeil, 2)          \
+  V(MathClz32, 2)         \
   V(MathFloor, 2)         \
   V(MathRound, 2)         \
   V(MathSqrt, 2)          \
   V(MathTrunc, 2)         \
   V(ObjectHasOwnProperty, 2)
 
 // Define list of builtin handlers implemented in assembly.
 #define BUILTIN_LIST_H(V)                    \
   V(LoadIC_Slow,             LOAD_IC)        \
   V(KeyedLoadIC_Slow,        KEYED_LOAD_IC)  \
@@ skipping 257 matching lines @@
   static void Generate_FunctionHasInstance(MacroAssembler* masm);
   static void Generate_FunctionPrototypeApply(MacroAssembler* masm);
   static void Generate_FunctionPrototypeCall(MacroAssembler* masm);
 
   static void Generate_ReflectApply(MacroAssembler* masm);
   static void Generate_ReflectConstruct(MacroAssembler* masm);
 
   static void Generate_InternalArrayCode(MacroAssembler* masm);
   static void Generate_ArrayCode(MacroAssembler* masm);
 
-  // ES6 section 20.2.2.10 Math.floor ( x )
+  // ES6 section 20.2.2.10 Math.ceil ( x )
   static void Generate_MathCeil(compiler::CodeStubAssembler* assembler);
+  // ES6 section 20.2.2.11 Math.clz32 ( x )
+  static void Generate_MathClz32(compiler::CodeStubAssembler* assembler);
   // ES6 section 20.2.2.16 Math.floor ( x )
   static void Generate_MathFloor(compiler::CodeStubAssembler* assembler);
   enum class MathMaxMinKind { kMax, kMin };
   static void Generate_MathMaxMin(MacroAssembler* masm, MathMaxMinKind kind);
   // ES6 section 20.2.2.24 Math.max ( value1, value2 , ...values )
   static void Generate_MathMax(MacroAssembler* masm) {
     Generate_MathMaxMin(masm, MathMaxMinKind::kMax);
   }
   // ES6 section 20.2.2.25 Math.min ( value1, value2 , ...values )
   static void Generate_MathMin(MacroAssembler* masm) {
@@ skipping 57 matching lines @@
   friend class BuiltinFunctionTable;
   friend class Isolate;
 
   DISALLOW_COPY_AND_ASSIGN(Builtins);
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_BUILTINS_H_