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

src/compiler/raw-machine-assembler.h

 // 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.
 
 #ifndef V8_COMPILER_RAW_MACHINE_ASSEMBLER_H_
 #define V8_COMPILER_RAW_MACHINE_ASSEMBLER_H_
 
 #include "src/compiler/common-operator.h"
 #include "src/compiler/graph-builder.h"
 #include "src/compiler/linkage.h"
@@ skipping 157 matching lines @@
   }
   Node* Word32Shr(Node* a, Node* b) {
     return NewNode(machine()->Word32Shr(), a, b);
   }
   Node* Word32Sar(Node* a, Node* b) {
     return NewNode(machine()->Word32Sar(), a, b);
   }
   Node* Word32Ror(Node* a, Node* b) {
     return NewNode(machine()->Word32Ror(), a, b);
   }
+  Node* Word32Clz(Node* a) { return NewNode(machine()->Word32Clz(), a); }
   Node* Word32Equal(Node* a, Node* b) {
     return NewNode(machine()->Word32Equal(), a, b);
   }
   Node* Word32NotEqual(Node* a, Node* b) {
     return Word32BinaryNot(Word32Equal(a, b));
   }
   Node* Word32Not(Node* a) { return Word32Xor(a, Int32Constant(-1)); }
   Node* Word32BinaryNot(Node* a) { return Word32Equal(a, Int32Constant(0)); }
 
   Node* Word64And(Node* a, Node* b) {
@@ skipping 291 matching lines @@
   BasicBlock* current_block_;
 
   DISALLOW_COPY_AND_ASSIGN(RawMachineAssembler);
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_RAW_MACHINE_ASSEMBLER_H_