Revert of [crankshaft] Fix IsClassOfTest helper method (patchset #1 id:1 of...

Revert of [crankshaft] Fix IsClassOfTest helper method (patchset #1 id:1 of https://codereview.chromium.org/2586933002/ )

Reason for revert:
Breaks vtune:
https://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20vtunejit/builds/15379

Original issue's description:
> [crankshaft] Fix IsClassOfTest helper method
>
> Drive-by-fix: Add AstNode::Print() and improve printing of CallRuntime
>               Expression.
>
> BUG=v8:5749
>
> Review-Url: https://codereview.chromium.org/2586933002
> Cr-Commit-Position: refs/heads/master@{#41792}
> Committed: https://chromium.googlesource.com/v8/v8/+/d4493222b958877e51ebd67399d12a80ec848e30

TBR=bmeurer@chromium.org,cbruni@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:5749

Review-Url: https://codereview.chromium.org/2587973002
Cr-Commit-Position: refs/heads/master@{#41795}

src/ast/ast.cc

@@ -28,8 +28,6 @@ namespace internal {
 
 #ifdef DEBUG
 
-void AstNode::Print() { Print(Isolate::Current()); }
-
 void AstNode::Print(Isolate* isolate) {
   AstPrinter::PrintOut(isolate, this);
 }

src/ast/ast.h

@@ -191,7 +191,6 @@ class AstNode: public ZoneObject {
   int position() const { return position_; }
 
 #ifdef DEBUG
-  void Print();
   void Print(Isolate* isolate);
 #endif  // DEBUG
 

src/ast/prettyprinter.cc

@@ -1142,13 +1142,7 @@ void AstPrinter::VisitCallNew(CallNew* node) {
 
 void AstPrinter::VisitCallRuntime(CallRuntime* node) {
   EmbeddedVector<char, 128> buf;
-  if (node->is_jsruntime()) {
-    SNPrintF(buf, "CALL RUNTIME %s code = %p", node->debug_name(),
-             isolate_->context()->get(node->context_index()));
-  } else {
   SNPrintF(buf, "CALL RUNTIME %s", node->debug_name());
-  }
-
   IndentedScope indent(this, buf.start(), node->position());
   PrintArguments(node->arguments());
 }

src/crankshaft/hydrogen.cc

@@ -10924,12 +10924,15 @@ static bool IsClassOfTest(CompareOperation* expr) {
   Literal* literal = expr->right()->AsLiteral();
   if (literal == NULL) return false;
   if (!literal->value()->IsString()) return false;
-  if (call->is_jsruntime()) return false;
-  if (call->function()->function_id != Runtime::kInlineClassOf) return false;
-  DCHECK_EQ(call->arguments()->length(), 1);
+  if (!call->is_jsruntime() &&
+      call->function()->function_id != Runtime::kInlineClassOf) {
+    return false;
+  }
+  DCHECK(call->arguments()->length() == 1);
   return true;
 }
 
+
 void HOptimizedGraphBuilder::VisitBinaryOperation(BinaryOperation* expr) {
   DCHECK(!HasStackOverflow());
   DCHECK(current_block() != NULL);

test/mjsunit/regress/regress-5749.js

-// 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.
-
-// Flags: --allow-natives-syntax
-
-function f(x) {
-    (x ** 1) === '';
-}
-f();
-f();
-f();
-%OptimizeFunctionOnNextCall(f);
-f();
-
-function g(x) {
-    '' === (x ** 1);
-}
-g();
-g();
-g();
-%OptimizeFunctionOnNextCall(g);
-g();