[tests] Fix and un-skip mjsunit/es6/array-iterator-turbo

BUG=v8:6113,v8:6325

Review-Url: https://codereview.chromium.org/2853783003
Cr-Commit-Position: refs/heads/master@{#45024}

src/runtime/runtime-test.cc

@@ -280,6 +280,11 @@ RUNTIME_FUNCTION(Runtime_OptimizeFunctionOnNextCall) {
   if (function->IsOptimized()) return isolate->heap()->undefined_value();
 
   function->MarkForOptimization();
+  if (FLAG_trace_opt) {
+    PrintF("[manually marking ");
+    function->ShortPrint();
+    PrintF(" for optimization]\n");
+  }
 
   if (args.length() == 2) {
     CONVERT_ARG_HANDLE_CHECKED(String, type, 1);

test/mjsunit/es6/array-iterator-turbo.js

@@ -102,29 +102,13 @@ let tests = {
       %OptimizeFunctionOnNextCall(fn);
       fn(array);
 
-      // TODO(bmeurer): FAST_HOLEY_DOUBLE_ELEMENTS maps generally deopt when
-      // a hole is encountered. Test should be fixed once that is corrected.
-      let expect_deopt = /HOLEY_DOUBLE/.test(key);
-
-      if (expect_deopt) {
-        assertUnoptimized(fn, '', key);
-      } else {
-        assertOptimized(fn, '', key);
-      }
+      assertOptimized(fn, '', key);
       assertEquals(expected, fn(array), key);
-      if (expect_deopt) {
-        assertUnoptimized(fn, '', key);
-      } else {
-        assertOptimized(fn, '', key);
-      }
+      assertOptimized(fn, '', key);
 
       // Check no deopt when another array with the same map is used
       assertTrue(%HaveSameMap(array, array2), key);
-      if (expect_deopt) {
-        assertUnoptimized(fn, '', key);
-      } else {
-        assertOptimized(fn, '', key);
-      }
+      assertOptimized(fn, '', key);
       assertEquals(expected2, fn(array2), key);
 
       // CheckMaps bailout
@@ -231,6 +215,10 @@ let tests = {
       let clone = new array.constructor(array);
       %ArrayBufferNeuter(clone.buffer);
       assertThrows(() => sum(clone), TypeError);
+
+      // Clear the slate for the next iteration.
+      %DeoptimizeFunction(sum);
+      %ClearFunctionFeedback(sum);
     }
   }
 };

test/mjsunit/mjsunit.status

@@ -183,9 +183,6 @@
   #                  which makes the test useless.
   'big-object-literal': [PASS, ['mode == debug', SKIP]],
 
-  # BUG(v8:6113).
-  'es6/array-iterator-turbo': [SKIP],
-
   # BUG(v8:6306).
   'wasm/huge-memory': [SKIP],
 }],  # ALWAYS