mirror of https://github.com/lukechilds/node.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
222 lines
7.6 KiB
222 lines
7.6 KiB
// 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
|
|
// 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 --smi-only-arrays --expose-gc
|
|
// Flags: --track-allocation-sites --noalways-opt
|
|
|
|
// Test element kind of objects.
|
|
// Since --smi-only-arrays affects builtins, its default setting at compile
|
|
// time sticks if built with snapshot. If --smi-only-arrays is deactivated
|
|
// by default, only a no-snapshot build actually has smi-only arrays enabled
|
|
// in this test case. Depending on whether smi-only arrays are actually
|
|
// enabled, this test takes the appropriate code path to check smi-only arrays.
|
|
|
|
// Reset the GC stress mode to be off. Needed because AllocationMementos only
|
|
// live for one gc, so a gc that happens in certain fragile areas of the test
|
|
// can break assumptions.
|
|
%SetFlags("--gc-interval=-1")
|
|
|
|
// support_smi_only_arrays = %HasFastSmiElements(new Array(1,2,3,4,5,6,7,8));
|
|
support_smi_only_arrays = true;
|
|
|
|
if (support_smi_only_arrays) {
|
|
print("Tests include smi-only arrays.");
|
|
} else {
|
|
print("Tests do NOT include smi-only arrays.");
|
|
}
|
|
|
|
var elements_kind = {
|
|
fast_smi_only : 'fast smi only elements',
|
|
fast : 'fast elements',
|
|
fast_double : 'fast double elements',
|
|
dictionary : 'dictionary elements',
|
|
external_byte : 'external byte elements',
|
|
external_unsigned_byte : 'external unsigned byte elements',
|
|
external_short : 'external short elements',
|
|
external_unsigned_short : 'external unsigned short elements',
|
|
external_int : 'external int elements',
|
|
external_unsigned_int : 'external unsigned int elements',
|
|
external_float : 'external float elements',
|
|
external_double : 'external double elements',
|
|
external_pixel : 'external pixel elements'
|
|
}
|
|
|
|
function getKind(obj) {
|
|
if (%HasFastSmiElements(obj)) return elements_kind.fast_smi_only;
|
|
if (%HasFastObjectElements(obj)) return elements_kind.fast;
|
|
if (%HasFastDoubleElements(obj)) return elements_kind.fast_double;
|
|
if (%HasDictionaryElements(obj)) return elements_kind.dictionary;
|
|
}
|
|
|
|
function isHoley(obj) {
|
|
if (%HasFastHoleyElements(obj)) return true;
|
|
return false;
|
|
}
|
|
|
|
function assertKind(expected, obj, name_opt) {
|
|
if (!support_smi_only_arrays &&
|
|
expected == elements_kind.fast_smi_only) {
|
|
expected = elements_kind.fast;
|
|
}
|
|
assertEquals(expected, getKind(obj), name_opt);
|
|
}
|
|
|
|
if (support_smi_only_arrays) {
|
|
|
|
// Test: If a call site goes megamorphic, it loses the ability to
|
|
// use allocation site feedback.
|
|
(function() {
|
|
function bar(t, len) {
|
|
return new t(len);
|
|
}
|
|
|
|
a = bar(Array, 10);
|
|
a[0] = 3.5;
|
|
b = bar(Array, 1);
|
|
assertKind(elements_kind.fast_double, b);
|
|
c = bar(Object, 3);
|
|
b = bar(Array, 10);
|
|
assertKind(elements_kind.fast_smi_only, b);
|
|
b[0] = 3.5;
|
|
c = bar(Array, 10);
|
|
assertKind(elements_kind.fast_smi_only, c);
|
|
})();
|
|
|
|
|
|
// Test: ensure that crankshafted array constructor sites are deopted
|
|
// if another function is used.
|
|
(function() {
|
|
function bar0(t) {
|
|
return new t();
|
|
}
|
|
a = bar0(Array);
|
|
a[0] = 3.5;
|
|
b = bar0(Array);
|
|
assertKind(elements_kind.fast_double, b);
|
|
%OptimizeFunctionOnNextCall(bar0);
|
|
b = bar0(Array);
|
|
assertKind(elements_kind.fast_double, b);
|
|
assertOptimized(bar0);
|
|
// bar0 should deopt
|
|
b = bar0(Object);
|
|
assertUnoptimized(bar0)
|
|
// When it's re-optimized, we should call through the full stub
|
|
bar0(Array);
|
|
%OptimizeFunctionOnNextCall(bar0);
|
|
b = bar0(Array);
|
|
// We also lost our ability to record kind feedback, as the site
|
|
// is megamorphic now.
|
|
assertKind(elements_kind.fast_smi_only, b);
|
|
assertOptimized(bar0);
|
|
b[0] = 3.5;
|
|
c = bar0(Array);
|
|
assertKind(elements_kind.fast_smi_only, c);
|
|
})();
|
|
|
|
|
|
// Test: Ensure that bailouts from the stub don't deopt a crankshafted
|
|
// method with a call to that stub.
|
|
(function() {
|
|
function bar(len) {
|
|
return new Array(len);
|
|
}
|
|
a = bar(10);
|
|
a[0] = "a string";
|
|
a = bar(10);
|
|
assertKind(elements_kind.fast, a);
|
|
%OptimizeFunctionOnNextCall(bar);
|
|
a = bar(10);
|
|
assertKind(elements_kind.fast, a);
|
|
assertOptimized(bar);
|
|
// The stub bails out, but the method call should be fine.
|
|
a = bar(100000);
|
|
assertOptimized(bar);
|
|
assertKind(elements_kind.dictionary, a);
|
|
|
|
// If the argument isn't a smi, it bails out as well
|
|
a = bar("oops");
|
|
assertOptimized(bar);
|
|
assertKind(elements_kind.fast, a);
|
|
|
|
function barn(one, two, three) {
|
|
return new Array(one, two, three);
|
|
}
|
|
|
|
barn(1, 2, 3);
|
|
barn(1, 2, 3);
|
|
%OptimizeFunctionOnNextCall(barn);
|
|
barn(1, 2, 3);
|
|
assertOptimized(barn);
|
|
a = barn(1, "oops", 3);
|
|
// The stub should bail out but the method should remain optimized.
|
|
assertKind(elements_kind.fast, a);
|
|
assertOptimized(barn);
|
|
})();
|
|
|
|
|
|
// Test: When a method with array constructor is crankshafted, the type
|
|
// feedback for elements kind is baked in. Verify that transitions don't
|
|
// change it anymore
|
|
(function() {
|
|
function bar() {
|
|
return new Array();
|
|
}
|
|
a = bar();
|
|
bar();
|
|
%OptimizeFunctionOnNextCall(bar);
|
|
b = bar();
|
|
// This only makes sense to test if we allow crankshafting
|
|
if (4 != %GetOptimizationStatus(bar)) {
|
|
assertOptimized(bar);
|
|
%DebugPrint(3);
|
|
b[0] = 3.5;
|
|
c = bar();
|
|
assertKind(elements_kind.fast_smi_only, c);
|
|
assertOptimized(bar);
|
|
}
|
|
})();
|
|
|
|
|
|
// Test: create arrays in two contexts, verifying that the correct
|
|
// map for Array in that context will be used.
|
|
(function() {
|
|
function bar() { return new Array(); }
|
|
bar();
|
|
bar();
|
|
%OptimizeFunctionOnNextCall(bar);
|
|
a = bar();
|
|
assertTrue(a instanceof Array);
|
|
|
|
var contextB = Realm.create();
|
|
Realm.eval(contextB, "function bar2() { return new Array(); };");
|
|
Realm.eval(contextB, "bar2(); bar2();");
|
|
Realm.eval(contextB, "%OptimizeFunctionOnNextCall(bar2);");
|
|
Realm.eval(contextB, "bar2();");
|
|
assertFalse(Realm.eval(contextB, "bar2();") instanceof Array);
|
|
assertTrue(Realm.eval(contextB, "bar2() instanceof Array"));
|
|
})();
|
|
}
|
|
|