[intrinsics] Remove %_IsFunction inline intrinsic.

src/compiler/typer.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/compiler/typer.h"
 
 #include "src/base/flags.h"
 #include "src/bootstrapper.h"
 #include "src/compilation-dependencies.h"
 #include "src/compiler/common-operator.h"
@@ skipping 1516 matching lines @@
 }
 
 
 Type* Typer::Visitor::TypeJSCallRuntime(Node* node) {
   switch (CallRuntimeParametersOf(node->op()).id()) {
     case Runtime::kInlineIsSmi:
     case Runtime::kInlineIsArray:
     case Runtime::kInlineIsDate:
     case Runtime::kInlineIsTypedArray:
     case Runtime::kInlineIsMinusZero:
-    case Runtime::kInlineIsFunction:
     case Runtime::kInlineIsRegExp:
     case Runtime::kInlineIsJSReceiver:
       return Type::Boolean();
     case Runtime::kInlineDoubleLo:
     case Runtime::kInlineDoubleHi:
       return Type::Signed32();
     case Runtime::kInlineConstructDouble:
     case Runtime::kInlineMathFloor:
     case Runtime::kInlineMathSqrt:
     case Runtime::kInlineMathAcos:
@@ skipping 842 matching lines @@
   }
   if (Type::IsInteger(*value)) {
     return Type::Range(value->Number(), value->Number(), zone());
   }
   return Type::Constant(value, zone());
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8