Merge bleeding edge into the GC branch up to 7948. The asserts

test/mjsunit/external-array.js

 // Copyright 2011 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
 //       with the distribution.
 //     * Neither the name of Google Inc. nor the names of its
 //       contributors may be used to endorse or promote products derived
 //       from this software without specific prior written permission.
 //
 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-// Flags: --allow-natives-syntax
+// Flags: --allow-natives-syntax --expose-gc
 
 // This is a regression test for overlapping key and value registers.
 function f(a) {
   a[0] = 0;
   a[1] = 0;
 }
 
 var a = new Int32Array(2);
 for (var i = 0; i < 5; i++) {
   f(a);
 }
 %OptimizeFunctionOnNextCall(f);
 f(a);
 
 assertEquals(0, a[0]);
 assertEquals(0, a[1]);
 
-// Test the correct behavior of the |length| property (which is read-only).
-a = new Int32Array(42);
-assertEquals(42, a.length);
-a.length = 2;
-assertEquals(42, a.length);
-assertTrue(delete a.length);
-a.length = 2
-assertEquals(2, a.length);
-
 // Test the correct behavior of the |BYTES_PER_ELEMENT| property (which is
 // "constant", but not read-only).
 a = new Int32Array(2);
 assertEquals(4, a.BYTES_PER_ELEMENT);
 a.BYTES_PER_ELEMENT = 42;
 assertEquals(42, a.BYTES_PER_ELEMENT);
 a = new Uint8Array(2);
 assertEquals(1, a.BYTES_PER_ELEMENT);
 a = new Int16Array(2);
 assertEquals(2, a.BYTES_PER_ELEMENT);
 
 // Test Float64Arrays.
 function get(a, index) {
   return a[index];
 }
 function set(a, index, value) {
   a[index] = value;
 }
-
+function temp() {
 var array = new Float64Array(2);
 for (var i = 0; i < 5; i++) {
   set(array, 0, 2.5);
   assertEquals(2.5, array[0]);
 }
 %OptimizeFunctionOnNextCall(set);
 set(array, 0, 2.5);
 assertEquals(2.5, array[0]);
 set(array, 1, 3.5);
 assertEquals(3.5, array[1]);
 for (var i = 0; i < 5; i++) {
   assertEquals(2.5, get(array, 0));
   assertEquals(3.5, array[1]);
 }
 %OptimizeFunctionOnNextCall(get);
 assertEquals(2.5, get(array, 0));
 assertEquals(3.5, get(array, 1));
+}
+
+// Test loads and stores.
+types = [Array, Int8Array, Uint8Array, Int16Array, Uint16Array, Int32Array,
+         Uint32Array, PixelArray, Float32Array, Float64Array];
+
+test_result_nan = [NaN, 0, 0, 0, 0, 0, 0, 0, NaN, NaN];
+test_result_low_int = [-1, -1, 255, -1, 65535, -1, 0xFFFFFFFF, 0, -1, -1];
+test_result_middle = [253.75, -3, 253, 253, 253, 253, 253, 254, 253.75, 253.75];
+test_result_high_int = [256, 0, 0, 256, 256, 256, 256, 255, 256, 256];
+
+const kElementCount = 40;
+
+function test_load(array, sum) {
+  for (var i = 0; i < kElementCount; i++) {
+    sum += array[i];
+  }
+  return sum;
+}
+
+function test_load_const_key(array, sum) {
+  sum += array[0];
+  sum += array[1];
+  sum += array[2];
+  return sum;
+}
+
+function test_store(array, sum) {
+  for (var i = 0; i < kElementCount; i++) {
+    sum += array[i] = i+1;
+  }
+  return sum;
+}
+
+function test_store_const_key(array, sum) {
+  sum += array[0] = 1;
+  sum += array[1] = 2;
+  sum += array[2] = 3;
+  return sum;
+}
+
+
+function test_store_middle_double(array, sum) {
+  array[0] = 253.75;
+  return array[0];
+}
+
+
+function test_store_high_double(array, sum) {
+  array[0] = 256.25;
+  return array[0];
+}
+
+function test_store_high_double(array, sum) {
+  array[0] = 256.25;
+  return array[0];
+}
+
+function test_store_low_int(array, sum) {
+  array[0] = -1;
+  return array[0];
+}
+
+function test_store_high_int(array, sum) {
+  array[0] = 256;
+  return array[0];
+}
+
+function test_store_nan(array, sum) {
+  array[0] = NaN;
+  return array[0];
+}
+
+const kRuns = 10;
+
+function run_test(test_func, array, expected_result) {
+  for (var i = 0; i < 5; i++) test_func(array, 0);
+  %OptimizeFunctionOnNextCall(test_func);
+  var sum = 0;
+  for (var i = 0; i < kRuns; i++) {
+    sum = test_func(array, sum);
+  }
+  assertEquals(expected_result, sum);
+  %DeoptimizeFunction(test_func);
+  gc();  // Makes V8 forget about type information for test_func.
+}
+
+for (var t = 0; t < types.length; t++) {
+  var type = types[t];
+  print ("type = " + t);
+  var a = new type(kElementCount);
+  for (var i = 0; i < kElementCount; i++) {
+    a[i] = i;
+  }
+
+  // Run test functions defined above.
+  run_test(test_load, a, 780 * kRuns);
+  run_test(test_load_const_key, a, 3 * kRuns);
+  run_test(test_store, a, 820 * kRuns);
+  run_test(test_store_const_key, a, 6 * kRuns);
+  run_test(test_store_low_int, a, test_result_low_int[t]);
+  run_test(test_store_high_int, a, test_result_high_int[t]);
+  run_test(test_store_nan, a, test_result_nan[t]);
+  run_test(test_store_middle_double, a, test_result_middle[t]);
+
+  // Test the correct behavior of the |length| property (which is read-only).
+  if (t != 0) {
+    assertEquals(kElementCount, a.length);
+    a.length = 2;
+    assertEquals(kElementCount, a.length);
+    assertTrue(delete a.length);
+    a.length = 2;
+    assertEquals(2, a.length);
+  }
+}