[crankshaft] Support ES6 tail call elimination.

test/mjsunit/es6/tail-call-simple.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 --harmony-tailcalls --stack-size=100
+// TODO(v8:4698), TODO(ishell): support these cases.
+// Flags: --no-turbo --nostress-opt
 
 //
 // Tail calls work only in strict mode.
 //
 (function() {
   function f(n) {
     if (n <= 0) {
-      return  "foo";
+      return "foo";
     }
     return f(n - 1);
   }
   assertThrows(()=>{ f(1e5) });
   %OptimizeFunctionOnNextCall(f);
   assertThrows(()=>{ f(1e5) });
 })();
 
 
 //
 // Tail call normal functions.
 //
 (function() {
   "use strict";
   function f(n) {
     if (n <= 0) {
-      return  "foo";
+      return "foo";
     }
     return f(n - 1);
   }
   assertEquals("foo", f(1e5));
   %OptimizeFunctionOnNextCall(f);
   assertEquals("foo", f(1e5));
 })();
 
 
 (function() {
   "use strict";
+  function f(n) {
+    if (n <= 0) {
+      return  "foo";
+    }
+    return f(n - 1, 42);  // Call with arguments adaptor.
+  }
+  assertEquals("foo", f(1e5));
+  %OptimizeFunctionOnNextCall(f);
+  assertEquals("foo", f(1e5));
+})();
+
+
+(function() {
+  "use strict";
   function f(n){
     if (n <= 0) {
       return "foo";
     }
     return g(n - 1);
   }
   function g(n){
     if (n <= 0) {
       return "bar";
     }
     return f(n - 1);
   }
   assertEquals("foo", f(1e5));
   assertEquals("bar", f(1e5 + 1));
   %OptimizeFunctionOnNextCall(f);
   assertEquals("foo", f(1e5));
   assertEquals("bar", f(1e5 + 1));
 })();
 
 
+(function() {
+  "use strict";
+  function f(n){
+    if (n <= 0) {
+      return "foo";
+    }
+    return g(n - 1, 42);  // Call with arguments adaptor.
+  }
+  function g(n){
+    if (n <= 0) {
+      return "bar";
+    }
+    return f(n - 1, 42);  // Call with arguments adaptor.
+  }
+  assertEquals("foo", f(1e5));
+  assertEquals("bar", f(1e5 + 1));
+  %OptimizeFunctionOnNextCall(f);
+  assertEquals("foo", f(1e5));
+  assertEquals("bar", f(1e5 + 1));
+})();
+
+
 //
 // Tail call bound functions.
 //
 (function() {
   "use strict";
   function f0(n) {
     if (n <= 0) {
       return "foo";
     }
     return f_bound(n - 1);
@@ skipping 26 matching lines @@
   var g_bound = g0.bind({});
   function f(n) {
     return f_bound(n);
   }
   assertEquals("foo", f(1e5));
   assertEquals("bar", f(1e5 + 1));
   %OptimizeFunctionOnNextCall(f);
   assertEquals("foo", f(1e5));
   assertEquals("bar", f(1e5 + 1));
 })();