| // 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. |
| |
| |
| #include "v8.h" |
| |
| #include "cctest.h" |
| #include "compiler.h" |
| #include "execution.h" |
| #include "isolate.h" |
| |
| |
| using namespace v8::internal; |
| |
| static v8::Persistent<v8::Context> env; |
| |
| |
| void SetSeeds(Handle<ByteArray> seeds, uint32_t state0, uint32_t state1) { |
| for (int i = 0; i < 4; i++) { |
| seeds->set(i, static_cast<byte>(state0 >> (i * kBitsPerByte))); |
| seeds->set(i + 4, static_cast<byte>(state1 >> (i * kBitsPerByte))); |
| } |
| } |
| |
| |
| void TestSeeds(Handle<JSFunction> fun, |
| Handle<Context> context, |
| uint32_t state0, |
| uint32_t state1) { |
| bool has_pending_exception; |
| Handle<JSObject> global(context->global_object()); |
| Handle<ByteArray> seeds(context->random_seed()); |
| |
| SetSeeds(seeds, state0, state1); |
| Handle<Object> value = |
| Execution::Call(fun, global, 0, NULL, &has_pending_exception); |
| CHECK(value->IsHeapNumber()); |
| CHECK(fun->IsOptimized()); |
| double crankshaft_value = HeapNumber::cast(*value)->value(); |
| |
| SetSeeds(seeds, state0, state1); |
| V8::FillHeapNumberWithRandom(*value, *context); |
| double runtime_value = HeapNumber::cast(*value)->value(); |
| CHECK_EQ(runtime_value, crankshaft_value); |
| } |
| |
| |
| TEST(CrankshaftRandom) { |
| if (env.IsEmpty()) env = v8::Context::New(); |
| // Skip test if crankshaft is disabled. |
| if (!V8::UseCrankshaft()) return; |
| v8::HandleScope scope; |
| env->Enter(); |
| |
| Handle<Context> context(Isolate::Current()->context()); |
| Handle<JSObject> global(context->global_object()); |
| Handle<ByteArray> seeds(context->random_seed()); |
| bool has_pending_exception; |
| |
| CompileRun("function f() { return Math.random(); }"); |
| |
| Object* symbol = FACTORY->LookupAsciiSymbol("f")->ToObjectChecked(); |
| MaybeObject* fun_object = |
| context->global_object()->GetProperty(String::cast(symbol)); |
| Handle<JSFunction> fun(JSFunction::cast(fun_object->ToObjectChecked())); |
| |
| // Optimize function. |
| Execution::Call(fun, global, 0, NULL, &has_pending_exception); |
| Execution::Call(fun, global, 0, NULL, &has_pending_exception); |
| if (!fun->IsOptimized()) fun->MarkForLazyRecompilation(); |
| |
| // Test with some random values. |
| TestSeeds(fun, context, 0xC0C0AFFE, 0x31415926); |
| TestSeeds(fun, context, 0x01020304, 0xFFFFFFFF); |
| TestSeeds(fun, context, 0x00000001, 0x00000000); |
| |
| // Test that we bail out to runtime when seeds are uninitialized (zeros). |
| SetSeeds(seeds, 0, 0); |
| Handle<Object> value = |
| Execution::Call(fun, global, 0, NULL, &has_pending_exception); |
| CHECK(value->IsHeapNumber()); |
| CHECK(fun->IsOptimized()); |
| double crankshaft_value = HeapNumber::cast(*value)->value(); |
| CHECK_NE(0.0, crankshaft_value); |
| } |