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1f31dcc424
R=fschneider@google.com Review URL: https://codereview.chromium.org//22640019 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@26122 260f80e4-7a28-3924-810f-c04153c831b5
152 lines
3.3 KiB
Dart
152 lines
3.3 KiB
Dart
// Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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// VMOptions=--throw_on_javascript_int_overflow --optimization_counter_threshold=10 --no-use-osr
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import "package:expect/expect.dart";
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import 'dart:typed_data';
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double dti_arg;
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int double_to_int() {
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return dti_arg.toInt();
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}
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int ia_arg1;
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int ia_arg2;
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int integer_add() {
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return ia_arg1 + ia_arg2;
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}
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int is_arg;
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int integer_shift() {
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return is_arg << 1;
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}
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int max_add_throws() {
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return 0x20000000000000 + 1;
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}
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int min_sub_throws() {
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return -0x20000000000000 - 1;
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}
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int n_arg;
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int negate() {
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return -n_arg;
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}
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int max_literal() {
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return 0x20000000000000;
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}
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int min_literal() {
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var min_literal = -0x20000000000000;
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return min_literal;
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}
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int doNotThrow1(a, b) {
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return (a << b) & 0xFFFFFFFF;
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}
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int doNotThrow2(a, b) {
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return (a << b) & 0xFFFFFFFF;
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}
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int doNotThrow3(a, b) {
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return (a << b) & 0x7FFFFFFF;
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}
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int doNotThrow4(a, b) {
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return (a << b) & 0x7FFFFFFF;
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}
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// We don't test for the _JavascriptIntegerOverflowError since it's not visible.
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// It should not be visible since it doesn't exist on dart2js.
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bool isJavascriptIntError(e) =>
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e is Error && "$e".startsWith("Javascript Integer Overflow:");
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main() {
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Expect.equals(0x20000000000000, max_literal());
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Expect.equals(-0x20000000000000, min_literal());
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// Run the tests once before optimizations.
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dti_arg = 1.9e17;
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Expect.throws(double_to_int, isJavascriptIntError);
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ia_arg1 = (1 << 53);
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ia_arg2 = (1 << 53);
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Expect.throws(integer_add, isJavascriptIntError);
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n_arg = -0x20000000000000;
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Expect.equals(0x20000000000000, negate());
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is_arg = (1 << 53);
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Expect.throws(integer_shift, isJavascriptIntError);
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Expect.throws(max_add_throws, isJavascriptIntError);
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Expect.throws(min_sub_throws, isJavascriptIntError);
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for (int i = 0; i < 20; i++) {
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dti_arg = i.toDouble();
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// Expect.throws calls through the closure, so we have to here, too.
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var f = double_to_int;
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Expect.equals(i, f());
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ia_arg1 = i;
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ia_arg2 = i;
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f = integer_add;
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Expect.equals(i + i, f());
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n_arg = i;
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f = negate;
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Expect.equals(-i, f());
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is_arg = i;
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f = integer_shift;
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Expect.equals(i << 1, f());
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}
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// The optimized functions should now deoptimize and throw the error.
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dti_arg = 1.9e17;
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Expect.throws(double_to_int, isJavascriptIntError);
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ia_arg1 = (1 << 53);
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ia_arg2 = (1 << 53);
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Expect.throws(integer_add, isJavascriptIntError);
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n_arg = -0x20000000000000;
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Expect.equals(0x20000000000000, negate());
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is_arg = (1 << 53);
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Expect.throws(integer_shift, isJavascriptIntError);
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Expect.throws(max_add_throws, isJavascriptIntError);
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Expect.throws(min_sub_throws, isJavascriptIntError);
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for (int i = 0; i < 20; i++) {
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Expect.equals(0xAFAFA000, doNotThrow1(0xFAFAFA, 12));
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Expect.equals(0x2FAFA000, doNotThrow3(0xFAFAFA, 12));
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Expect.equals(0xABABA000, doNotThrow2(0xFAFAFAABABA, 12));
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Expect.equals(0x2BABA000, doNotThrow4(0xFAFAFAABABA, 12));
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}
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for (int i = 0; i < 20; i++) {
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Expect.equals(0xABABA000, doNotThrow1(0xFAFAFAABABA, 12));
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Expect.equals(0x2BABA000, doNotThrow3(0xFAFAFAABABA, 12));
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}
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}
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