Support external arrays in Crankshaft

test/cctest/test-api.cc

 // Copyright 2007-2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 11474 matching lines @@
                     "               (ext_array[5] == expected_results[i]);"
                     "}"
                     "all_passed;",
                     (is_unsigned ?
                          unsigned_data :
                          (is_pixel_data ? pixel_data : signed_data)));
     result = CompileRun(test_buf.start());
     CHECK_EQ(true, result->BooleanValue());
   }
 
+  // Test crankshaft external array loads
+  for (int i = 0; i < kElementCount; i++) {
+    array->set(i, static_cast<ElementType>(i));
+  }
+  result = CompileRun("function ee_load_test_func(sum) {"
+                      " for (var i=0;i<40;++i)"
+                      "   sum += ext_array[i];"
+                      " return sum;"
+                      "}"
+                      "sum=0;"
+                      "for (var i=0;i<10000;++i) {"
+                      "  sum=ee_load_test_func(sum);"
+                      "}"
+                      "sum;");
+  CHECK_EQ(7800000, result->Int32Value());
+
+  // Test crankshaft external array stores
+  result = CompileRun("function ee_store_test_func(sum) {"
+                      " for (var i=0;i<40;++i)"
+                      "   sum += ext_array[i] = i;"
+                      " return sum;"
+                      "}"
+                      "sum=0;"
+                      "for (var i=0;i<10000;++i) {"
+                      "  sum=ee_store_test_func(sum);"
+                      "}"
+                      "sum;");
+  CHECK_EQ(7800000, result->Int32Value());
+
+  // Test edge cases for crankshaft code.
+  array->set(0, static_cast<ElementType>(0xFFFFFFFF));
+  result = CompileRun("function ee_limit_test_func(i) {"
+                      "   return ext_array[i];"
+                      " return sum;"
+                      "}"
+                      "sum=0;"
+                      "for (var i=0;i<1000000;++i) {"
+                      "  sum=ee_limit_test_func(0);"
+                      "}"
+                      "sum;");
+  if (array_type == v8::kExternalFloatArray) {
+    CHECK_EQ(0, result->Int32Value());
+  } else {
+    CHECK_EQ(static_cast<int>(static_cast<ElementType>(0xFFFFFFFF)),
+             result->Int32Value());
+  }
+
   result = CompileRun("ext_array[3] = 33;"
                       "delete ext_array[3];"
                       "ext_array[3];");
   CHECK_EQ(33, result->Int32Value());
 
   result = CompileRun("ext_array[0] = 10; ext_array[1] = 11;"
                       "ext_array[2] = 12; ext_array[3] = 13;"
                       "ext_array.__defineGetter__('2',"
                       "function() { return 120; });"
                       "ext_array[2];");
@@ skipping 2090 matching lines @@
   v8::Handle<v8::Function> define_property =
       CompileRun("(function() {"
                  "  Object.defineProperty("
                  "    this,"
                  "    1,"
                  "    { configurable: true, enumerable: true, value: 3 });"
                  "})").As<Function>();
   context->DetachGlobal();
   define_property->Call(proxy, 0, NULL);
 }