Optimize Smi keys for KeyedLoads

test/mjsunit/external-array.js

 // Copyright 2012 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 645 matching lines @@
 assertEquals(b0.byteLength, b1.byteLength)
 assertArrayPrefix([1, 2, 3, 4, 5, 6], Int8Array(b1))
 
 var b2 = b0.slice(3)
 assertEquals(b0.byteLength - 3, b2.byteLength)
 assertArrayPrefix([4, 5, 6], Int8Array(b2))
 
 var b3 = b0.slice(2, 4)
 assertEquals(2, b3.byteLength)
 assertArrayPrefix([3, 4], Int8Array(b3))
+
+function goo(a, i) {
+  return a[i];
+}
+
+function boo(a, i, v) {
+  return a[i] = v;
+}
+
+function do_tagged_index_external_array_test(constructor) {
+  var t_array = new constructor([1, 2, 3, 4, 5, 6]);
+  assertEquals(1, goo(t_array, 0));
+  assertEquals(1, goo(t_array, 0));
+  boo(t_array, 0, 13);
+  assertEquals(13, goo(t_array, 0));
+  %OptimizeFunctionOnNextCall(goo);
+  %OptimizeFunctionOnNextCall(boo);
+  boo(t_array, 0, 15);
+  assertEquals(15, goo(t_array, 0));
+  %ClearFunctionTypeFeedback(goo);
+  %ClearFunctionTypeFeedback(boo);
+}
+
+do_tagged_index_external_array_test(Int8Array);
+do_tagged_index_external_array_test(Uint8Array);
+do_tagged_index_external_array_test(Int16Array);
+do_tagged_index_external_array_test(Uint16Array);
+do_tagged_index_external_array_test(Int32Array);
+do_tagged_index_external_array_test(Uint32Array);
+do_tagged_index_external_array_test(Float32Array);
+do_tagged_index_external_array_test(Float64Array);
+
+var built_in_array = new Array(1, 2, 3, 4, 5, 6);
+assertEquals(1, goo(built_in_array, 0));
+assertEquals(1, goo(built_in_array, 0));
+%OptimizeFunctionOnNextCall(goo);
+%OptimizeFunctionOnNextCall(boo);
+boo(built_in_array, 0, 11);
+assertEquals(11, goo(built_in_array, 0));
+%ClearFunctionTypeFeedback(goo);
+%ClearFunctionTypeFeedback(boo);
+
+built_in_array = new Array(1.5, 2, 3, 4, 5, 6);
+assertEquals(1.5, goo(built_in_array, 0));
+assertEquals(1.5, goo(built_in_array, 0));
+%OptimizeFunctionOnNextCall(goo);
+%OptimizeFunctionOnNextCall(boo);
+boo(built_in_array, 0, 2.5);
+assertEquals(2.5, goo(built_in_array, 0));
+%ClearFunctionTypeFeedback(goo);
+%ClearFunctionTypeFeedback(boo);