asm.js. Adds support for clz32 in asm.js.

src/asmjs/asm-typer.h

 // Copyright 2016 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 SRC_ASMJS_ASM_TYPER_H_
 #define SRC_ASMJS_ASM_TYPER_H_
 
 #include <cstdint>
 #include <string>
 
@@ skipping 29 matching lines @@
     kMathAtan,
     kMathCos,
     kMathSin,
     kMathTan,
     kMathExp,
     kMathLog,
     kMathCeil,
     kMathFloor,
     kMathSqrt,
     kMathAbs,
+    kMathClz32,
     kMathMin,
     kMathMax,
     kMathAtan2,
     kMathPow,
     kMathImul,
     kMathFround,
     kMathE,
     kMathLN10,
     kMathLN2,
     kMathLOG2E,
@@ skipping 261 matching lines @@
   char error_message_[kErrorMessageLimit];
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(AsmTyper);
 };
 
 }  // namespace wasm
 }  // namespace internal
 }  // namespace v8
 
 #endif  // SRC_ASMJS_ASM_TYPER_H_