63431b23d1
BUG= R=rossberg@chromium.org Review URL: https://codereview.chromium.org/351853005 git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22064 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
453 lines
16 KiB
C++
453 lines
16 KiB
C++
// Copyright 2012 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include <stdlib.h>
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#include <wchar.h>
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#include "src/v8.h"
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#include "src/compiler.h"
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#include "src/disasm.h"
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#include "test/cctest/cctest.h"
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using namespace v8::internal;
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static Handle<Object> GetGlobalProperty(const char* name) {
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Isolate* isolate = CcTest::i_isolate();
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return Object::GetProperty(
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isolate, isolate->global_object(), name).ToHandleChecked();
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}
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static void SetGlobalProperty(const char* name, Object* value) {
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Isolate* isolate = CcTest::i_isolate();
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Handle<Object> object(value, isolate);
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Handle<String> internalized_name =
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isolate->factory()->InternalizeUtf8String(name);
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Handle<JSObject> global(isolate->context()->global_object());
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Runtime::SetObjectProperty(isolate, global, internalized_name, object,
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SLOPPY).Check();
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}
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static Handle<JSFunction> Compile(const char* source) {
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Isolate* isolate = CcTest::i_isolate();
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Handle<String> source_code = isolate->factory()->NewStringFromUtf8(
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CStrVector(source)).ToHandleChecked();
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Handle<SharedFunctionInfo> shared_function =
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Compiler::CompileScript(source_code,
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Handle<String>(),
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0,
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0,
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false,
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Handle<Context>(isolate->native_context()),
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NULL, NULL, NO_CACHED_DATA,
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NOT_NATIVES_CODE);
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return isolate->factory()->NewFunctionFromSharedFunctionInfo(
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shared_function, isolate->native_context());
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}
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static double Inc(Isolate* isolate, int x) {
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const char* source = "result = %d + 1;";
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EmbeddedVector<char, 512> buffer;
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SNPrintF(buffer, source, x);
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Handle<JSFunction> fun = Compile(buffer.start());
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if (fun.is_null()) return -1;
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Handle<JSObject> global(isolate->context()->global_object());
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Execution::Call(isolate, fun, global, 0, NULL).Check();
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return GetGlobalProperty("result")->Number();
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}
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TEST(Inc) {
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CcTest::InitializeVM();
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v8::HandleScope scope(CcTest::isolate());
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CHECK_EQ(4.0, Inc(CcTest::i_isolate(), 3));
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}
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static double Add(Isolate* isolate, int x, int y) {
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Handle<JSFunction> fun = Compile("result = x + y;");
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if (fun.is_null()) return -1;
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SetGlobalProperty("x", Smi::FromInt(x));
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SetGlobalProperty("y", Smi::FromInt(y));
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Handle<JSObject> global(isolate->context()->global_object());
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Execution::Call(isolate, fun, global, 0, NULL).Check();
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return GetGlobalProperty("result")->Number();
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}
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TEST(Add) {
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CcTest::InitializeVM();
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v8::HandleScope scope(CcTest::isolate());
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CHECK_EQ(5.0, Add(CcTest::i_isolate(), 2, 3));
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}
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static double Abs(Isolate* isolate, int x) {
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Handle<JSFunction> fun = Compile("if (x < 0) result = -x; else result = x;");
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if (fun.is_null()) return -1;
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SetGlobalProperty("x", Smi::FromInt(x));
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Handle<JSObject> global(isolate->context()->global_object());
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Execution::Call(isolate, fun, global, 0, NULL).Check();
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return GetGlobalProperty("result")->Number();
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}
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TEST(Abs) {
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CcTest::InitializeVM();
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v8::HandleScope scope(CcTest::isolate());
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CHECK_EQ(3.0, Abs(CcTest::i_isolate(), -3));
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}
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static double Sum(Isolate* isolate, int n) {
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Handle<JSFunction> fun =
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Compile("s = 0; while (n > 0) { s += n; n -= 1; }; result = s;");
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if (fun.is_null()) return -1;
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SetGlobalProperty("n", Smi::FromInt(n));
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Handle<JSObject> global(isolate->context()->global_object());
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Execution::Call(isolate, fun, global, 0, NULL).Check();
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return GetGlobalProperty("result")->Number();
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}
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TEST(Sum) {
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CcTest::InitializeVM();
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v8::HandleScope scope(CcTest::isolate());
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CHECK_EQ(5050.0, Sum(CcTest::i_isolate(), 100));
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}
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TEST(Print) {
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v8::HandleScope scope(CcTest::isolate());
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v8::Local<v8::Context> context = CcTest::NewContext(PRINT_EXTENSION);
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v8::Context::Scope context_scope(context);
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const char* source = "for (n = 0; n < 100; ++n) print(n, 1, 2);";
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Handle<JSFunction> fun = Compile(source);
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if (fun.is_null()) return;
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Handle<JSObject> global(CcTest::i_isolate()->context()->global_object());
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Execution::Call(CcTest::i_isolate(), fun, global, 0, NULL).Check();
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}
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// The following test method stems from my coding efforts today. It
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// tests all the functionality I have added to the compiler today
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TEST(Stuff) {
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CcTest::InitializeVM();
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v8::HandleScope scope(CcTest::isolate());
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const char* source =
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"r = 0;\n"
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"a = new Object;\n"
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"if (a == a) r+=1;\n" // 1
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"if (a != new Object()) r+=2;\n" // 2
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"a.x = 42;\n"
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"if (a.x == 42) r+=4;\n" // 4
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"function foo() { var x = 87; return x; }\n"
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"if (foo() == 87) r+=8;\n" // 8
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"function bar() { var x; x = 99; return x; }\n"
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"if (bar() == 99) r+=16;\n" // 16
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"function baz() { var x = 1, y, z = 2; y = 3; return x + y + z; }\n"
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"if (baz() == 6) r+=32;\n" // 32
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"function Cons0() { this.x = 42; this.y = 87; }\n"
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"if (new Cons0().x == 42) r+=64;\n" // 64
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"if (new Cons0().y == 87) r+=128;\n" // 128
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"function Cons2(x, y) { this.sum = x + y; }\n"
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"if (new Cons2(3,4).sum == 7) r+=256;"; // 256
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Handle<JSFunction> fun = Compile(source);
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CHECK(!fun.is_null());
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Handle<JSObject> global(CcTest::i_isolate()->context()->global_object());
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Execution::Call(
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CcTest::i_isolate(), fun, global, 0, NULL).Check();
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CHECK_EQ(511.0, GetGlobalProperty("r")->Number());
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}
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TEST(UncaughtThrow) {
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CcTest::InitializeVM();
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v8::HandleScope scope(CcTest::isolate());
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const char* source = "throw 42;";
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Handle<JSFunction> fun = Compile(source);
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CHECK(!fun.is_null());
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Isolate* isolate = fun->GetIsolate();
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Handle<JSObject> global(isolate->context()->global_object());
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CHECK(Execution::Call(isolate, fun, global, 0, NULL).is_null());
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CHECK_EQ(42.0, isolate->pending_exception()->Number());
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}
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// Tests calling a builtin function from C/C++ code, and the builtin function
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// performs GC. It creates a stack frame looks like following:
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// | C (PerformGC) |
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// | JS-to-C |
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// | JS |
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// | C-to-JS |
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TEST(C2JSFrames) {
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FLAG_expose_gc = true;
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v8::HandleScope scope(CcTest::isolate());
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v8::Local<v8::Context> context =
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CcTest::NewContext(PRINT_EXTENSION | GC_EXTENSION);
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v8::Context::Scope context_scope(context);
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const char* source = "function foo(a) { gc(), print(a); }";
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Handle<JSFunction> fun0 = Compile(source);
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CHECK(!fun0.is_null());
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Isolate* isolate = fun0->GetIsolate();
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// Run the generated code to populate the global object with 'foo'.
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Handle<JSObject> global(isolate->context()->global_object());
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Execution::Call(isolate, fun0, global, 0, NULL).Check();
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Handle<String> foo_string = isolate->factory()->InternalizeOneByteString(
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STATIC_ASCII_VECTOR("foo"));
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Handle<Object> fun1 = Object::GetProperty(
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isolate->global_object(), foo_string).ToHandleChecked();
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CHECK(fun1->IsJSFunction());
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Handle<Object> argv[] = { isolate->factory()->InternalizeOneByteString(
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STATIC_ASCII_VECTOR("hello")) };
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Execution::Call(isolate,
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Handle<JSFunction>::cast(fun1),
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global,
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ARRAY_SIZE(argv),
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argv).Check();
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}
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// Regression 236. Calling InitLineEnds on a Script with undefined
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// source resulted in crash.
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TEST(Regression236) {
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CcTest::InitializeVM();
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Isolate* isolate = CcTest::i_isolate();
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Factory* factory = isolate->factory();
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v8::HandleScope scope(CcTest::isolate());
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Handle<Script> script = factory->NewScript(factory->empty_string());
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script->set_source(CcTest::heap()->undefined_value());
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CHECK_EQ(-1, Script::GetLineNumber(script, 0));
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CHECK_EQ(-1, Script::GetLineNumber(script, 100));
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CHECK_EQ(-1, Script::GetLineNumber(script, -1));
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}
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TEST(GetScriptLineNumber) {
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LocalContext context;
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v8::HandleScope scope(CcTest::isolate());
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v8::ScriptOrigin origin =
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v8::ScriptOrigin(v8::String::NewFromUtf8(CcTest::isolate(), "test"));
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const char function_f[] = "function f() {}";
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const int max_rows = 1000;
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const int buffer_size = max_rows + sizeof(function_f);
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ScopedVector<char> buffer(buffer_size);
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memset(buffer.start(), '\n', buffer_size - 1);
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buffer[buffer_size - 1] = '\0';
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for (int i = 0; i < max_rows; ++i) {
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if (i > 0)
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buffer[i - 1] = '\n';
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MemCopy(&buffer[i], function_f, sizeof(function_f) - 1);
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v8::Handle<v8::String> script_body =
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v8::String::NewFromUtf8(CcTest::isolate(), buffer.start());
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v8::Script::Compile(script_body, &origin)->Run();
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v8::Local<v8::Function> f =
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v8::Local<v8::Function>::Cast(context->Global()->Get(
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v8::String::NewFromUtf8(CcTest::isolate(), "f")));
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CHECK_EQ(i, f->GetScriptLineNumber());
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}
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}
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TEST(FeedbackVectorPreservedAcrossRecompiles) {
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if (i::FLAG_always_opt || !i::FLAG_crankshaft) return;
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i::FLAG_allow_natives_syntax = true;
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CcTest::InitializeVM();
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if (!CcTest::i_isolate()->use_crankshaft()) return;
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v8::HandleScope scope(CcTest::isolate());
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// Make sure function f has a call that uses a type feedback slot.
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CompileRun("function fun() {};"
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"fun1 = fun;"
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"function f(a) { a(); } f(fun1);");
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Handle<JSFunction> f =
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v8::Utils::OpenHandle(
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*v8::Handle<v8::Function>::Cast(
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CcTest::global()->Get(v8_str("f"))));
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// We shouldn't have deoptimization support. We want to recompile and
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// verify that our feedback vector preserves information.
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CHECK(!f->shared()->has_deoptimization_support());
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Handle<FixedArray> feedback_vector(f->shared()->feedback_vector());
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// Verify that we gathered feedback.
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CHECK_EQ(1, feedback_vector->length());
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CHECK(feedback_vector->get(0)->IsJSFunction());
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CompileRun("%OptimizeFunctionOnNextCall(f); f(fun1);");
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// Verify that the feedback is still "gathered" despite a recompilation
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// of the full code.
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CHECK(f->IsOptimized());
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CHECK(f->shared()->has_deoptimization_support());
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CHECK(f->shared()->feedback_vector()->get(0)->IsJSFunction());
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}
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TEST(FeedbackVectorUnaffectedByScopeChanges) {
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if (i::FLAG_always_opt || !i::FLAG_lazy) return;
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CcTest::InitializeVM();
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v8::HandleScope scope(CcTest::isolate());
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CompileRun("function builder() {"
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" call_target = function() { return 3; };"
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" return (function() {"
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" eval('');"
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" return function() {"
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" 'use strict';"
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" call_target();"
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" }"
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" })();"
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"}"
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"morphing_call = builder();");
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Handle<JSFunction> f =
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v8::Utils::OpenHandle(
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*v8::Handle<v8::Function>::Cast(
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CcTest::global()->Get(v8_str("morphing_call"))));
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// morphing_call should have one feedback vector slot for the call to
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// call_target().
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CHECK_EQ(1, f->shared()->feedback_vector()->length());
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// And yet it's not compiled.
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CHECK(!f->shared()->is_compiled());
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CompileRun("morphing_call();");
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// The vector should have the same size despite the new scoping.
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CHECK_EQ(1, f->shared()->feedback_vector()->length());
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CHECK(f->shared()->is_compiled());
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}
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// Test that optimized code for different closures is actually shared
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// immediately by the FastNewClosureStub when run in the same context.
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TEST(OptimizedCodeSharing) {
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// Skip test if --cache-optimized-code is not activated by default because
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// FastNewClosureStub that is baked into the snapshot is incorrect.
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if (!FLAG_cache_optimized_code) return;
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FLAG_stress_compaction = false;
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FLAG_allow_natives_syntax = true;
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CcTest::InitializeVM();
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v8::HandleScope scope(CcTest::isolate());
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for (int i = 0; i < 10; i++) {
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LocalContext env;
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env->Global()->Set(v8::String::NewFromUtf8(CcTest::isolate(), "x"),
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v8::Integer::New(CcTest::isolate(), i));
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CompileRun("function MakeClosure() {"
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" return function() { return x; };"
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"}"
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"var closure0 = MakeClosure();"
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"%DebugPrint(closure0());"
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"%OptimizeFunctionOnNextCall(closure0);"
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"%DebugPrint(closure0());"
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"var closure1 = MakeClosure();"
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"var closure2 = MakeClosure();");
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Handle<JSFunction> fun1 = v8::Utils::OpenHandle(
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*v8::Local<v8::Function>::Cast(env->Global()->Get(v8_str("closure1"))));
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Handle<JSFunction> fun2 = v8::Utils::OpenHandle(
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*v8::Local<v8::Function>::Cast(env->Global()->Get(v8_str("closure2"))));
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CHECK(fun1->IsOptimized()
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|| !CcTest::i_isolate()->use_crankshaft() || !fun1->IsOptimizable());
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CHECK(fun2->IsOptimized()
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|| !CcTest::i_isolate()->use_crankshaft() || !fun2->IsOptimizable());
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CHECK_EQ(fun1->code(), fun2->code());
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}
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}
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#ifdef ENABLE_DISASSEMBLER
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static Handle<JSFunction> GetJSFunction(v8::Handle<v8::Object> obj,
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const char* property_name) {
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v8::Local<v8::Function> fun =
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v8::Local<v8::Function>::Cast(obj->Get(v8_str(property_name)));
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return v8::Utils::OpenHandle(*fun);
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}
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static void CheckCodeForUnsafeLiteral(Handle<JSFunction> f) {
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// Create a disassembler with default name lookup.
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disasm::NameConverter name_converter;
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disasm::Disassembler d(name_converter);
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if (f->code()->kind() == Code::FUNCTION) {
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Address pc = f->code()->instruction_start();
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int decode_size =
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Min(f->code()->instruction_size(),
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static_cast<int>(f->code()->back_edge_table_offset()));
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Address end = pc + decode_size;
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v8::internal::EmbeddedVector<char, 128> decode_buffer;
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v8::internal::EmbeddedVector<char, 128> smi_hex_buffer;
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Smi* smi = Smi::FromInt(12345678);
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SNPrintF(smi_hex_buffer, "0x%" V8PRIxPTR, reinterpret_cast<intptr_t>(smi));
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while (pc < end) {
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int num_const = d.ConstantPoolSizeAt(pc);
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if (num_const >= 0) {
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pc += (num_const + 1) * kPointerSize;
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} else {
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pc += d.InstructionDecode(decode_buffer, pc);
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CHECK(strstr(decode_buffer.start(), smi_hex_buffer.start()) == NULL);
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}
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}
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}
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}
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TEST(SplitConstantsInFullCompiler) {
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LocalContext context;
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v8::HandleScope scope(CcTest::isolate());
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CompileRun("function f() { a = 12345678 }; f();");
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CheckCodeForUnsafeLiteral(GetJSFunction(context->Global(), "f"));
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CompileRun("function f(x) { a = 12345678 + x}; f(1);");
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CheckCodeForUnsafeLiteral(GetJSFunction(context->Global(), "f"));
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CompileRun("function f(x) { var arguments = 1; x += 12345678}; f(1);");
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CheckCodeForUnsafeLiteral(GetJSFunction(context->Global(), "f"));
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CompileRun("function f(x) { var arguments = 1; x = 12345678}; f(1);");
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CheckCodeForUnsafeLiteral(GetJSFunction(context->Global(), "f"));
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}
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#endif
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