Support external arrays in Crankshaft

test/cctest/test-api.cc

Index: test/cctest/test-api.cc
diff --git a/test/cctest/test-api.cc b/test/cctest/test-api.cc
index 2a4fe138908a514cafa82741082040c52ac87054..5293761cfdd84400ddcd8b3d40d80ecd786fcc80 100644
--- a/test/cctest/test-api.cc
+++ b/test/cctest/test-api.cc
@@ -11492,6 +11492,53 @@ static void ExternalArrayTestHelper(v8::ExternalArrayType array_type,
     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];");