blob: 28867a89efa809b1e7ade1f19185733291b4cad3 [file] [log] [blame]
// 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 <stdlib.h>
#include <wchar.h>
#include "src/init/v8.h"
#include "src/api/api-inl.h"
#include "src/codegen/compilation-cache.h"
#include "src/codegen/compiler.h"
#include "src/diagnostics/disasm.h"
#include "src/heap/factory.h"
#include "src/heap/spaces.h"
#include "src/interpreter/interpreter.h"
#include "src/objects/allocation-site-inl.h"
#include "src/objects/objects-inl.h"
#include "test/cctest/cctest.h"
namespace v8 {
namespace internal {
static Handle<Object> GetGlobalProperty(const char* name) {
Isolate* isolate = CcTest::i_isolate();
return JSReceiver::GetProperty(isolate, isolate->global_object(), name)
.ToHandleChecked();
}
static void SetGlobalProperty(const char* name, Object value) {
Isolate* isolate = CcTest::i_isolate();
Handle<Object> object(value, isolate);
Handle<String> internalized_name =
isolate->factory()->InternalizeUtf8String(name);
Handle<JSObject> global(isolate->context().global_object(), isolate);
Runtime::SetObjectProperty(isolate, global, internalized_name, object,
StoreOrigin::kMaybeKeyed, Just(kDontThrow))
.Check();
}
static Handle<JSFunction> Compile(const char* source) {
Isolate* isolate = CcTest::i_isolate();
Handle<String> source_code = isolate->factory()->NewStringFromUtf8(
CStrVector(source)).ToHandleChecked();
Handle<SharedFunctionInfo> shared =
Compiler::GetSharedFunctionInfoForScript(
isolate, source_code, Compiler::ScriptDetails(),
v8::ScriptOriginOptions(), nullptr, nullptr,
v8::ScriptCompiler::kNoCompileOptions,
ScriptCompiler::kNoCacheNoReason, NOT_NATIVES_CODE)
.ToHandleChecked();
return isolate->factory()->NewFunctionFromSharedFunctionInfo(
shared, isolate->native_context());
}
static double Inc(Isolate* isolate, int x) {
const char* source = "result = %d + 1;";
EmbeddedVector<char, 512> buffer;
SNPrintF(buffer, source, x);
Handle<JSFunction> fun = Compile(buffer.begin());
if (fun.is_null()) return -1;
Handle<JSObject> global(isolate->context().global_object(), isolate);
Execution::Call(isolate, fun, global, 0, nullptr).Check();
return GetGlobalProperty("result")->Number();
}
TEST(Inc) {
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
CHECK_EQ(4.0, Inc(CcTest::i_isolate(), 3));
}
static double Add(Isolate* isolate, int x, int y) {
Handle<JSFunction> fun = Compile("result = x + y;");
if (fun.is_null()) return -1;
SetGlobalProperty("x", Smi::FromInt(x));
SetGlobalProperty("y", Smi::FromInt(y));
Handle<JSObject> global(isolate->context().global_object(), isolate);
Execution::Call(isolate, fun, global, 0, nullptr).Check();
return GetGlobalProperty("result")->Number();
}
TEST(Add) {
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
CHECK_EQ(5.0, Add(CcTest::i_isolate(), 2, 3));
}
static double Abs(Isolate* isolate, int x) {
Handle<JSFunction> fun = Compile("if (x < 0) result = -x; else result = x;");
if (fun.is_null()) return -1;
SetGlobalProperty("x", Smi::FromInt(x));
Handle<JSObject> global(isolate->context().global_object(), isolate);
Execution::Call(isolate, fun, global, 0, nullptr).Check();
return GetGlobalProperty("result")->Number();
}
TEST(Abs) {
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
CHECK_EQ(3.0, Abs(CcTest::i_isolate(), -3));
}
static double Sum(Isolate* isolate, int n) {
Handle<JSFunction> fun =
Compile("s = 0; while (n > 0) { s += n; n -= 1; }; result = s;");
if (fun.is_null()) return -1;
SetGlobalProperty("n", Smi::FromInt(n));
Handle<JSObject> global(isolate->context().global_object(), isolate);
Execution::Call(isolate, fun, global, 0, nullptr).Check();
return GetGlobalProperty("result")->Number();
}
TEST(Sum) {
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
CHECK_EQ(5050.0, Sum(CcTest::i_isolate(), 100));
}
TEST(Print) {
v8::HandleScope scope(CcTest::isolate());
v8::Local<v8::Context> context = CcTest::NewContext({PRINT_EXTENSION_ID});
v8::Context::Scope context_scope(context);
const char* source = "for (n = 0; n < 100; ++n) print(n, 1, 2);";
Handle<JSFunction> fun = Compile(source);
if (fun.is_null()) return;
Handle<JSObject> global(CcTest::i_isolate()->context().global_object(),
fun->GetIsolate());
Execution::Call(CcTest::i_isolate(), fun, global, 0, nullptr).Check();
}
// The following test method stems from my coding efforts today. It
// tests all the functionality I have added to the compiler today
TEST(Stuff) {
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
const char* source =
"r = 0;\n"
"a = new Object;\n"
"if (a == a) r+=1;\n" // 1
"if (a != new Object()) r+=2;\n" // 2
"a.x = 42;\n"
"if (a.x == 42) r+=4;\n" // 4
"function foo() { var x = 87; return x; }\n"
"if (foo() == 87) r+=8;\n" // 8
"function bar() { var x; x = 99; return x; }\n"
"if (bar() == 99) r+=16;\n" // 16
"function baz() { var x = 1, y, z = 2; y = 3; return x + y + z; }\n"
"if (baz() == 6) r+=32;\n" // 32
"function Cons0() { this.x = 42; this.y = 87; }\n"
"if (new Cons0().x == 42) r+=64;\n" // 64
"if (new Cons0().y == 87) r+=128;\n" // 128
"function Cons2(x, y) { this.sum = x + y; }\n"
"if (new Cons2(3,4).sum == 7) r+=256;"; // 256
Handle<JSFunction> fun = Compile(source);
CHECK(!fun.is_null());
Handle<JSObject> global(CcTest::i_isolate()->context().global_object(),
fun->GetIsolate());
Execution::Call(CcTest::i_isolate(), fun, global, 0, nullptr).Check();
CHECK_EQ(511.0, GetGlobalProperty("r")->Number());
}
TEST(UncaughtThrow) {
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
const char* source = "throw 42;";
Handle<JSFunction> fun = Compile(source);
CHECK(!fun.is_null());
Isolate* isolate = fun->GetIsolate();
Handle<JSObject> global(isolate->context().global_object(), isolate);
CHECK(Execution::Call(isolate, fun, global, 0, nullptr).is_null());
CHECK_EQ(42.0, isolate->pending_exception().Number());
}
// Tests calling a builtin function from C/C++ code, and the builtin function
// performs GC. It creates a stack frame looks like following:
// | C (PerformGC) |
// | JS-to-C |
// | JS |
// | C-to-JS |
TEST(C2JSFrames) {
FLAG_expose_gc = true;
v8::HandleScope scope(CcTest::isolate());
v8::Local<v8::Context> context =
CcTest::NewContext({PRINT_EXTENSION_ID, GC_EXTENSION_ID});
v8::Context::Scope context_scope(context);
const char* source = "function foo(a) { gc(), print(a); }";
Handle<JSFunction> fun0 = Compile(source);
CHECK(!fun0.is_null());
Isolate* isolate = fun0->GetIsolate();
// Run the generated code to populate the global object with 'foo'.
Handle<JSObject> global(isolate->context().global_object(), isolate);
Execution::Call(isolate, fun0, global, 0, nullptr).Check();
Handle<Object> fun1 =
JSReceiver::GetProperty(isolate, isolate->global_object(), "foo")
.ToHandleChecked();
CHECK(fun1->IsJSFunction());
Handle<Object> argv[] = {
isolate->factory()->InternalizeString(StaticCharVector("hello"))};
Execution::Call(isolate,
Handle<JSFunction>::cast(fun1),
global,
arraysize(argv),
argv).Check();
}
// Regression 236. Calling InitLineEnds on a Script with undefined
// source resulted in crash.
TEST(Regression236) {
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Factory* factory = isolate->factory();
v8::HandleScope scope(CcTest::isolate());
Handle<Script> script = factory->NewScript(factory->empty_string());
script->set_source(ReadOnlyRoots(CcTest::heap()).undefined_value());
CHECK_EQ(-1, Script::GetLineNumber(script, 0));
CHECK_EQ(-1, Script::GetLineNumber(script, 100));
CHECK_EQ(-1, Script::GetLineNumber(script, -1));
}
TEST(GetScriptLineNumber) {
LocalContext context;
v8::HandleScope scope(CcTest::isolate());
v8::ScriptOrigin origin = v8::ScriptOrigin(v8_str("test"));
const char function_f[] = "function f() {}";
const int max_rows = 1000;
const int buffer_size = max_rows + sizeof(function_f);
ScopedVector<char> buffer(buffer_size);
memset(buffer.begin(), '\n', buffer_size - 1);
buffer[buffer_size - 1] = '\0';
for (int i = 0; i < max_rows; ++i) {
if (i > 0)
buffer[i - 1] = '\n';
MemCopy(&buffer[i], function_f, sizeof(function_f) - 1);
v8::Local<v8::String> script_body = v8_str(buffer.begin());
v8::Script::Compile(context.local(), script_body, &origin)
.ToLocalChecked()
->Run(context.local())
.ToLocalChecked();
v8::Local<v8::Function> f = v8::Local<v8::Function>::Cast(
context->Global()->Get(context.local(), v8_str("f")).ToLocalChecked());
CHECK_EQ(i, f->GetScriptLineNumber());
}
}
TEST(FeedbackVectorPreservedAcrossRecompiles) {
if (i::FLAG_always_opt || !i::FLAG_opt) return;
i::FLAG_allow_natives_syntax = true;
CcTest::InitializeVM();
if (!CcTest::i_isolate()->use_optimizer()) return;
v8::HandleScope scope(CcTest::isolate());
v8::Local<v8::Context> context = CcTest::isolate()->GetCurrentContext();
// Make sure function f has a call that uses a type feedback slot.
CompileRun(
"function fun() {};"
"fun1 = fun;"
"%PrepareFunctionForOptimization(f);"
"function f(a) { a(); } f(fun1);");
Handle<JSFunction> f = Handle<JSFunction>::cast(
v8::Utils::OpenHandle(*v8::Local<v8::Function>::Cast(
CcTest::global()->Get(context, v8_str("f")).ToLocalChecked())));
// Verify that we gathered feedback.
Handle<FeedbackVector> feedback_vector(f->feedback_vector(), f->GetIsolate());
CHECK(!feedback_vector->is_empty());
FeedbackSlot slot_for_a(0);
MaybeObject object = feedback_vector->Get(slot_for_a);
{
HeapObject heap_object;
CHECK(object->GetHeapObjectIfWeak(&heap_object));
CHECK(heap_object.IsJSFunction());
}
CompileRun("%OptimizeFunctionOnNextCall(f); f(fun1);");
// Verify that the feedback is still "gathered" despite a recompilation
// of the full code.
CHECK(f->IsOptimized());
object = f->feedback_vector().Get(slot_for_a);
{
HeapObject heap_object;
CHECK(object->GetHeapObjectIfWeak(&heap_object));
CHECK(heap_object.IsJSFunction());
}
}
TEST(FeedbackVectorUnaffectedByScopeChanges) {
if (i::FLAG_always_opt || !i::FLAG_lazy || i::FLAG_lite_mode) {
return;
}
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
v8::Local<v8::Context> context = CcTest::isolate()->GetCurrentContext();
CompileRun("function builder() {"
" call_target = function() { return 3; };"
" return (function() {"
" eval('');"
" return function() {"
" 'use strict';"
" call_target();"
" }"
" })();"
"}"
"morphing_call = builder();");
Handle<JSFunction> f = Handle<JSFunction>::cast(v8::Utils::OpenHandle(
*v8::Local<v8::Function>::Cast(CcTest::global()
->Get(context, v8_str("morphing_call"))
.ToLocalChecked())));
// If we are compiling lazily then it should not be compiled, and so no
// feedback vector allocated yet.
CHECK(!f->shared().is_compiled());
CompileRun("morphing_call();");
// Now a feedback vector / closure feedback cell array is allocated.
CHECK(f->shared().is_compiled());
CHECK(f->has_feedback_vector() || f->has_closure_feedback_cell_array());
}
// Test that optimized code for different closures is actually shared.
TEST(OptimizedCodeSharing1) {
FLAG_stress_compaction = false;
FLAG_allow_natives_syntax = true;
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
for (int i = 0; i < 3; i++) {
LocalContext env;
env->Global()
->Set(env.local(), v8_str("x"), v8::Integer::New(CcTest::isolate(), i))
.FromJust();
CompileRun(
"function MakeClosure() {"
" return function() { return x; };"
"}"
"var closure0 = MakeClosure();"
"var closure1 = MakeClosure();" // We only share optimized code
// if there are at least two closures.
"%PrepareFunctionForOptimization(closure0);"
"%DebugPrint(closure0());"
"%OptimizeFunctionOnNextCall(closure0);"
"%DebugPrint(closure0());"
"closure1();"
"var closure2 = MakeClosure(); closure2();");
Handle<JSFunction> fun1 = Handle<JSFunction>::cast(
v8::Utils::OpenHandle(*v8::Local<v8::Function>::Cast(
env->Global()
->Get(env.local(), v8_str("closure1"))
.ToLocalChecked())));
Handle<JSFunction> fun2 = Handle<JSFunction>::cast(
v8::Utils::OpenHandle(*v8::Local<v8::Function>::Cast(
env->Global()
->Get(env.local(), v8_str("closure2"))
.ToLocalChecked())));
CHECK(fun1->IsOptimized() || !CcTest::i_isolate()->use_optimizer());
CHECK(fun2->IsOptimized() || !CcTest::i_isolate()->use_optimizer());
CHECK_EQ(fun1->code(), fun2->code());
}
}
TEST(CompileFunctionInContext) {
if (i::FLAG_always_opt) return;
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
LocalContext env;
CompileRun("var r = 10;");
v8::Local<v8::Object> math = v8::Local<v8::Object>::Cast(
env->Global()->Get(env.local(), v8_str("Math")).ToLocalChecked());
v8::ScriptCompiler::Source script_source(v8_str(
"a = PI * r * r;"
"x = r * cos(PI);"
"y = r * sin(PI / 2);"));
v8::Local<v8::Function> fun =
v8::ScriptCompiler::CompileFunctionInContext(env.local(), &script_source,
0, nullptr, 1, &math)
.ToLocalChecked();
CHECK(!fun.IsEmpty());
i::DisallowCompilation no_compile(CcTest::i_isolate());
fun->Call(env.local(), env->Global(), 0, nullptr).ToLocalChecked();
CHECK(env->Global()->Has(env.local(), v8_str("a")).FromJust());
v8::Local<v8::Value> a =
env->Global()->Get(env.local(), v8_str("a")).ToLocalChecked();
CHECK(a->IsNumber());
CHECK(env->Global()->Has(env.local(), v8_str("x")).FromJust());
v8::Local<v8::Value> x =
env->Global()->Get(env.local(), v8_str("x")).ToLocalChecked();
CHECK(x->IsNumber());
CHECK(env->Global()->Has(env.local(), v8_str("y")).FromJust());
v8::Local<v8::Value> y =
env->Global()->Get(env.local(), v8_str("y")).ToLocalChecked();
CHECK(y->IsNumber());
CHECK_EQ(314.1592653589793, a->NumberValue(env.local()).FromJust());
CHECK_EQ(-10.0, x->NumberValue(env.local()).FromJust());
CHECK_EQ(10.0, y->NumberValue(env.local()).FromJust());
}
TEST(CompileFunctionInContextComplex) {
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
LocalContext env;
CompileRun(
"var x = 1;"
"var y = 2;"
"var z = 4;"
"var a = {x: 8, y: 16};"
"var b = {x: 32};");
v8::Local<v8::Object> ext[2];
ext[0] = v8::Local<v8::Object>::Cast(
env->Global()->Get(env.local(), v8_str("a")).ToLocalChecked());
ext[1] = v8::Local<v8::Object>::Cast(
env->Global()->Get(env.local(), v8_str("b")).ToLocalChecked());
v8::ScriptCompiler::Source script_source(v8_str("result = x + y + z"));
v8::Local<v8::Function> fun =
v8::ScriptCompiler::CompileFunctionInContext(env.local(), &script_source,
0, nullptr, 2, ext)
.ToLocalChecked();
CHECK(!fun.IsEmpty());
fun->Call(env.local(), env->Global(), 0, nullptr).ToLocalChecked();
CHECK(env->Global()->Has(env.local(), v8_str("result")).FromJust());
v8::Local<v8::Value> result =
env->Global()->Get(env.local(), v8_str("result")).ToLocalChecked();
CHECK(result->IsNumber());
CHECK_EQ(52.0, result->NumberValue(env.local()).FromJust());
}
TEST(CompileFunctionInContextArgs) {
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
LocalContext env;
CompileRun("var a = {x: 23};");
v8::Local<v8::Object> ext[1];
ext[0] = v8::Local<v8::Object>::Cast(
env->Global()->Get(env.local(), v8_str("a")).ToLocalChecked());
v8::ScriptCompiler::Source script_source(v8_str("result = x + abc"));
v8::Local<v8::String> arg = v8_str("abc");
v8::Local<v8::Function> fun =
v8::ScriptCompiler::CompileFunctionInContext(env.local(), &script_source,
1, &arg, 1, ext)
.ToLocalChecked();
CHECK_EQ(1, fun->Get(env.local(), v8_str("length"))
.ToLocalChecked()
->ToInt32(env.local())
.ToLocalChecked()
->Value());
v8::Local<v8::Value> arg_value = v8::Number::New(CcTest::isolate(), 42.0);
fun->Call(env.local(), env->Global(), 1, &arg_value).ToLocalChecked();
CHECK(env->Global()->Has(env.local(), v8_str("result")).FromJust());
v8::Local<v8::Value> result =
env->Global()->Get(env.local(), v8_str("result")).ToLocalChecked();
CHECK(result->IsNumber());
CHECK_EQ(65.0, result->NumberValue(env.local()).FromJust());
}
TEST(CompileFunctionInContextComments) {
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
LocalContext env;
CompileRun("var a = {x: 23, y: 1, z: 2};");
v8::Local<v8::Object> ext[1];
ext[0] = v8::Local<v8::Object>::Cast(
env->Global()->Get(env.local(), v8_str("a")).ToLocalChecked());
v8::Local<v8::String> source =
CompileRun("'result = /* y + */ x + a\\u4e00 // + z'").As<v8::String>();
v8::ScriptCompiler::Source script_source(source);
v8::Local<v8::String> arg = CompileRun("'a\\u4e00'").As<v8::String>();
v8::Local<v8::Function> fun =
v8::ScriptCompiler::CompileFunctionInContext(env.local(), &script_source,
1, &arg, 1, ext)
.ToLocalChecked();
CHECK(!fun.IsEmpty());
v8::Local<v8::Value> arg_value = v8::Number::New(CcTest::isolate(), 42.0);
fun->Call(env.local(), env->Global(), 1, &arg_value).ToLocalChecked();
CHECK(env->Global()->Has(env.local(), v8_str("result")).FromJust());
v8::Local<v8::Value> result =
env->Global()->Get(env.local(), v8_str("result")).ToLocalChecked();
CHECK(result->IsNumber());
CHECK_EQ(65.0, result->NumberValue(env.local()).FromJust());
}
TEST(CompileFunctionInContextNonIdentifierArgs) {
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
LocalContext env;
v8::ScriptCompiler::Source script_source(v8_str("result = 1"));
v8::Local<v8::String> arg = v8_str("b }");
CHECK(v8::ScriptCompiler::CompileFunctionInContext(
env.local(), &script_source, 1, &arg, 0, nullptr)
.IsEmpty());
}
TEST(CompileFunctionInContextRenderCallSite) {
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
LocalContext env;
static const char* source1 =
"try {"
" var a = [];"
" a[0]();"
"} catch (e) {"
" return e.toString();"
"}";
static const char* expect1 = "TypeError: a[0] is not a function";
static const char* source2 =
"try {"
" (function() {"
" var a = [];"
" a[0]();"
" })()"
"} catch (e) {"
" return e.toString();"
"}";
static const char* expect2 = "TypeError: a[0] is not a function";
{
v8::ScriptCompiler::Source script_source(v8_str(source1));
v8::Local<v8::Function> fun =
v8::ScriptCompiler::CompileFunctionInContext(
env.local(), &script_source, 0, nullptr, 0, nullptr)
.ToLocalChecked();
CHECK(!fun.IsEmpty());
v8::Local<v8::Value> result =
fun->Call(env.local(), env->Global(), 0, nullptr).ToLocalChecked();
CHECK(result->IsString());
CHECK(v8::Local<v8::String>::Cast(result)
->Equals(env.local(), v8_str(expect1))
.FromJust());
}
{
v8::ScriptCompiler::Source script_source(v8_str(source2));
v8::Local<v8::Function> fun =
v8::ScriptCompiler::CompileFunctionInContext(
env.local(), &script_source, 0, nullptr, 0, nullptr)
.ToLocalChecked();
v8::Local<v8::Value> result =
fun->Call(env.local(), env->Global(), 0, nullptr).ToLocalChecked();
CHECK(result->IsString());
CHECK(v8::Local<v8::String>::Cast(result)
->Equals(env.local(), v8_str(expect2))
.FromJust());
}
}
TEST(CompileFunctionInContextQuirks) {
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
LocalContext env;
{
static const char* source =
"[x, y] = ['ab', 'cd'];"
"return x + y";
static const char* expect = "abcd";
v8::ScriptCompiler::Source script_source(v8_str(source));
v8::Local<v8::Function> fun =
v8::ScriptCompiler::CompileFunctionInContext(
env.local(), &script_source, 0, nullptr, 0, nullptr)
.ToLocalChecked();
v8::Local<v8::Value> result =
fun->Call(env.local(), env->Global(), 0, nullptr).ToLocalChecked();
CHECK(result->IsString());
CHECK(v8::Local<v8::String>::Cast(result)
->Equals(env.local(), v8_str(expect))
.FromJust());
}
{
static const char* source = "'use strict'; var a = 077";
v8::ScriptCompiler::Source script_source(v8_str(source));
v8::TryCatch try_catch(CcTest::isolate());
CHECK(v8::ScriptCompiler::CompileFunctionInContext(
env.local(), &script_source, 0, nullptr, 0, nullptr)
.IsEmpty());
CHECK(try_catch.HasCaught());
}
{
static const char* source = "{ let x; { var x } }";
v8::ScriptCompiler::Source script_source(v8_str(source));
v8::TryCatch try_catch(CcTest::isolate());
CHECK(v8::ScriptCompiler::CompileFunctionInContext(
env.local(), &script_source, 0, nullptr, 0, nullptr)
.IsEmpty());
CHECK(try_catch.HasCaught());
}
}
TEST(CompileFunctionInContextScriptOrigin) {
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
LocalContext env;
v8::ScriptOrigin origin(v8_str("test"),
v8::Integer::New(CcTest::isolate(), 22),
v8::Integer::New(CcTest::isolate(), 41));
v8::ScriptCompiler::Source script_source(v8_str("throw new Error()"), origin);
v8::Local<v8::Function> fun =
v8::ScriptCompiler::CompileFunctionInContext(env.local(), &script_source,
0, nullptr, 0, nullptr)
.ToLocalChecked();
CHECK(!fun.IsEmpty());
v8::TryCatch try_catch(CcTest::isolate());
CcTest::isolate()->SetCaptureStackTraceForUncaughtExceptions(true);
CHECK(fun->Call(env.local(), env->Global(), 0, nullptr).IsEmpty());
CHECK(try_catch.HasCaught());
CHECK(!try_catch.Exception().IsEmpty());
v8::Local<v8::StackTrace> stack =
v8::Exception::GetStackTrace(try_catch.Exception());
CHECK(!stack.IsEmpty());
CHECK_GT(stack->GetFrameCount(), 0);
v8::Local<v8::StackFrame> frame = stack->GetFrame(CcTest::isolate(), 0);
CHECK_EQ(23, frame->GetLineNumber());
CHECK_EQ(42 + strlen("throw "), static_cast<unsigned>(frame->GetColumn()));
}
void TestCompileFunctionInContextToStringImpl() {
#define CHECK_NOT_CAUGHT(__local_context__, try_catch, __op__) \
do { \
const char* op = (__op__); \
v8::Local<v8::Context> context = (__local_context__); \
if (try_catch.HasCaught()) { \
v8::String::Utf8Value error( \
CcTest::isolate(), \
try_catch.Exception()->ToString(context).ToLocalChecked()); \
FATAL("Unexpected exception thrown during %s:\n\t%s\n", op, *error); \
} \
} while (false)
{ // NOLINT
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
LocalContext env;
// Regression test for v8:6190
{
v8::ScriptOrigin origin(v8_str("test"), v8_int(22), v8_int(41));
v8::ScriptCompiler::Source script_source(v8_str("return event"), origin);
v8::Local<v8::String> params[] = {v8_str("event")};
v8::TryCatch try_catch(CcTest::isolate());
v8::MaybeLocal<v8::Function> maybe_fun =
v8::ScriptCompiler::CompileFunctionInContext(
env.local(), &script_source, arraysize(params), params, 0,
nullptr);
CHECK_NOT_CAUGHT(env.local(), try_catch,
"v8::ScriptCompiler::CompileFunctionInContext");
v8::Local<v8::Function> fun = maybe_fun.ToLocalChecked();
CHECK(!fun.IsEmpty());
CHECK(!try_catch.HasCaught());
v8::Local<v8::String> result =
fun->ToString(env.local()).ToLocalChecked();
v8::Local<v8::String> expected = v8_str(
"function (event) {\n"
"return event\n"
"}");
CHECK(expected->Equals(env.local(), result).FromJust());
}
// With no parameters:
{
v8::ScriptOrigin origin(v8_str("test"), v8_int(17), v8_int(31));
v8::ScriptCompiler::Source script_source(v8_str("return 0"), origin);
v8::TryCatch try_catch(CcTest::isolate());
v8::MaybeLocal<v8::Function> maybe_fun =
v8::ScriptCompiler::CompileFunctionInContext(
env.local(), &script_source, 0, nullptr, 0, nullptr);
CHECK_NOT_CAUGHT(env.local(), try_catch,
"v8::ScriptCompiler::CompileFunctionInContext");
v8::Local<v8::Function> fun = maybe_fun.ToLocalChecked();
CHECK(!fun.IsEmpty());
CHECK(!try_catch.HasCaught());
v8::Local<v8::String> result =
fun->ToString(env.local()).ToLocalChecked();
v8::Local<v8::String> expected = v8_str(
"function () {\n"
"return 0\n"
"}");
CHECK(expected->Equals(env.local(), result).FromJust());
}
// With a name:
{
v8::ScriptOrigin origin(v8_str("test"), v8_int(17), v8_int(31));
v8::ScriptCompiler::Source script_source(v8_str("return 0"), origin);
v8::TryCatch try_catch(CcTest::isolate());
v8::MaybeLocal<v8::Function> maybe_fun =
v8::ScriptCompiler::CompileFunctionInContext(
env.local(), &script_source, 0, nullptr, 0, nullptr);
CHECK_NOT_CAUGHT(env.local(), try_catch,
"v8::ScriptCompiler::CompileFunctionInContext");
v8::Local<v8::Function> fun = maybe_fun.ToLocalChecked();
CHECK(!fun.IsEmpty());
CHECK(!try_catch.HasCaught());
fun->SetName(v8_str("onclick"));
v8::Local<v8::String> result =
fun->ToString(env.local()).ToLocalChecked();
v8::Local<v8::String> expected = v8_str(
"function onclick() {\n"
"return 0\n"
"}");
CHECK(expected->Equals(env.local(), result).FromJust());
}
}
#undef CHECK_NOT_CAUGHT
}
TEST(CompileFunctionInContextFunctionToString) {
TestCompileFunctionInContextToStringImpl();
}
TEST(InvocationCount) {
if (FLAG_lite_mode) return;
FLAG_allow_natives_syntax = true;
FLAG_always_opt = false;
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
CompileRun(
"function bar() {};"
"%EnsureFeedbackVectorForFunction(bar);"
"function foo() { return bar(); };"
"%EnsureFeedbackVectorForFunction(foo);"
"foo();");
Handle<JSFunction> foo = Handle<JSFunction>::cast(GetGlobalProperty("foo"));
CHECK_EQ(1, foo->feedback_vector().invocation_count());
CompileRun("foo()");
CHECK_EQ(2, foo->feedback_vector().invocation_count());
CompileRun("bar()");
CHECK_EQ(2, foo->feedback_vector().invocation_count());
CompileRun("foo(); foo()");
CHECK_EQ(4, foo->feedback_vector().invocation_count());
}
TEST(SafeToSkipArgumentsAdaptor) {
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
CompileRun(
"function a() { \"use strict\"; }; a();"
"function b() { }; b();"
"function c() { \"use strict\"; return arguments; }; c();"
"function d(...args) { return args; }; d();"
"function e() { \"use strict\"; return eval(\"\"); }; e();"
"function f(x, y) { \"use strict\"; return x + y; }; f(1, 2);");
Handle<JSFunction> a = Handle<JSFunction>::cast(GetGlobalProperty("a"));
CHECK(a->shared().is_safe_to_skip_arguments_adaptor());
Handle<JSFunction> b = Handle<JSFunction>::cast(GetGlobalProperty("b"));
CHECK(!b->shared().is_safe_to_skip_arguments_adaptor());
Handle<JSFunction> c = Handle<JSFunction>::cast(GetGlobalProperty("c"));
CHECK(!c->shared().is_safe_to_skip_arguments_adaptor());
Handle<JSFunction> d = Handle<JSFunction>::cast(GetGlobalProperty("d"));
CHECK(!d->shared().is_safe_to_skip_arguments_adaptor());
Handle<JSFunction> e = Handle<JSFunction>::cast(GetGlobalProperty("e"));
CHECK(!e->shared().is_safe_to_skip_arguments_adaptor());
Handle<JSFunction> f = Handle<JSFunction>::cast(GetGlobalProperty("f"));
CHECK(f->shared().is_safe_to_skip_arguments_adaptor());
}
TEST(ShallowEagerCompilation) {
i::FLAG_always_opt = false;
CcTest::InitializeVM();
LocalContext env;
i::Isolate* isolate = CcTest::i_isolate();
v8::HandleScope scope(CcTest::isolate());
v8::Local<v8::String> source = v8_str(
"function f(x) {"
" return x + x;"
"}"
"f(2)");
v8::ScriptCompiler::Source script_source(source);
v8::Local<v8::Script> script =
v8::ScriptCompiler::Compile(env.local(), &script_source,
v8::ScriptCompiler::kEagerCompile)
.ToLocalChecked();
{
v8::internal::DisallowCompilation no_compile_expected(isolate);
v8::Local<v8::Value> result = script->Run(env.local()).ToLocalChecked();
CHECK_EQ(4, result->Int32Value(env.local()).FromJust());
}
}
TEST(DeepEagerCompilation) {
i::FLAG_always_opt = false;
CcTest::InitializeVM();
LocalContext env;
i::Isolate* isolate = CcTest::i_isolate();
v8::HandleScope scope(CcTest::isolate());
v8::Local<v8::String> source = v8_str(
"function f(x) {"
" function g(x) {"
" function h(x) {"
" return x ** x;"
" }"
" return h(x) * h(x);"
" }"
" return g(x) + g(x);"
"}"
"f(2)");
v8::ScriptCompiler::Source script_source(source);
v8::Local<v8::Script> script =
v8::ScriptCompiler::Compile(env.local(), &script_source,
v8::ScriptCompiler::kEagerCompile)
.ToLocalChecked();
{
v8::internal::DisallowCompilation no_compile_expected(isolate);
v8::Local<v8::Value> result = script->Run(env.local()).ToLocalChecked();
CHECK_EQ(32, result->Int32Value(env.local()).FromJust());
}
}
TEST(DeepEagerCompilationPeakMemory) {
i::FLAG_always_opt = false;
CcTest::InitializeVM();
LocalContext env;
v8::HandleScope scope(CcTest::isolate());
v8::Local<v8::String> source = v8_str(
"function f() {"
" function g1() {"
" function h1() {"
" function i1() {}"
" function i2() {}"
" }"
" function h2() {"
" function i1() {}"
" function i2() {}"
" }"
" }"
" function g2() {"
" function h1() {"
" function i1() {}"
" function i2() {}"
" }"
" function h2() {"
" function i1() {}"
" function i2() {}"
" }"
" }"
"}");
v8::ScriptCompiler::Source script_source(source);
CcTest::i_isolate()->compilation_cache()->Disable();
v8::HeapStatistics heap_statistics;
CcTest::isolate()->GetHeapStatistics(&heap_statistics);
size_t peak_mem_1 = heap_statistics.peak_malloced_memory();
printf("peak memory after init: %8zu\n", peak_mem_1);
v8::ScriptCompiler::Compile(env.local(), &script_source,
v8::ScriptCompiler::kNoCompileOptions)
.ToLocalChecked();
CcTest::isolate()->GetHeapStatistics(&heap_statistics);
size_t peak_mem_2 = heap_statistics.peak_malloced_memory();
printf("peak memory after lazy compile: %8zu\n", peak_mem_2);
v8::ScriptCompiler::Compile(env.local(), &script_source,
v8::ScriptCompiler::kNoCompileOptions)
.ToLocalChecked();
CcTest::isolate()->GetHeapStatistics(&heap_statistics);
size_t peak_mem_3 = heap_statistics.peak_malloced_memory();
printf("peak memory after lazy compile: %8zu\n", peak_mem_3);
v8::ScriptCompiler::Compile(env.local(), &script_source,
v8::ScriptCompiler::kEagerCompile)
.ToLocalChecked();
CcTest::isolate()->GetHeapStatistics(&heap_statistics);
size_t peak_mem_4 = heap_statistics.peak_malloced_memory();
printf("peak memory after eager compile: %8zu\n", peak_mem_4);
CHECK_LE(peak_mem_1, peak_mem_2);
CHECK_EQ(peak_mem_2, peak_mem_3);
CHECK_LE(peak_mem_3, peak_mem_4);
// Check that eager compilation does not cause significantly higher (+100%)
// peak memory than lazy compilation.
CHECK_LE(peak_mem_4 - peak_mem_3, peak_mem_3);
}
// TODO(mslekova): Remove the duplication with test-heap.cc
static int AllocationSitesCount(Heap* heap) {
int count = 0;
for (Object site = heap->allocation_sites_list(); site.IsAllocationSite();) {
AllocationSite cur = AllocationSite::cast(site);
CHECK(cur.HasWeakNext());
site = cur.weak_next();
count++;
}
return count;
}
// This test simulates a specific race-condition if GC is triggered just
// before CompilationDependencies::Commit is finished, and this changes
// the pretenuring decision, thus causing a deoptimization.
TEST(DecideToPretenureDuringCompilation) {
// The test makes use of optimization and relies on deterministic
// compilation.
if (!i::FLAG_opt || i::FLAG_always_opt ||
i::FLAG_stress_incremental_marking || i::FLAG_optimize_for_size
#ifdef ENABLE_MINOR_MC
|| i::FLAG_minor_mc
#endif
)
return;
FLAG_stress_gc_during_compilation = true;
FLAG_allow_natives_syntax = true;
FLAG_allocation_site_pretenuring = true;
FLAG_flush_bytecode = false;
// We want to trigger exactly 1 optimization.
FLAG_use_osr = false;
// We'll do manual initialization.
ManualGCScope manual_gc_scope;
v8::Isolate::CreateParams create_params;
// This setting ensures Heap::MaximumSizeScavenge will return `true`.
// We need to initialize the heap with at least 1 page, while keeping the
// limit low, to ensure the new space fills even on 32-bit architectures.
create_params.constraints.set_max_semi_space_size_in_kb(Page::kPageSize /
1024);
create_params.array_buffer_allocator = CcTest::array_buffer_allocator();
v8::Isolate* isolate = v8::Isolate::New(create_params);
isolate->Enter();
{
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
Heap* heap = i_isolate->heap();
GlobalHandles* global_handles = i_isolate->global_handles();
HandleScope handle_scope(i_isolate);
// The allocation site at the head of the list is ours.
Handle<AllocationSite> site;
{
LocalContext context(isolate);
v8::HandleScope scope(context->GetIsolate());
int count = AllocationSitesCount(heap);
CompileRun(
"let arr = [];"
"function foo(shouldKeep) {"
" let local_array = new Array();"
" if (shouldKeep) arr.push(local_array);"
"}"
"function bar(shouldKeep) {"
" for (let i = 0; i < 10000; i++) {"
" foo(shouldKeep);"
" }"
"}"
"%PrepareFunctionForOptimization(bar);"
"bar();");
// This number should be >= kPretenureRatio * 10000,
// where 10000 is the number of iterations in `bar`,
// in order to make the ratio in DigestPretenuringFeedback close to 1.
const int memento_found_bump = 8500;
// One allocation site should have been created.
int new_count = AllocationSitesCount(heap);
CHECK_EQ(new_count, (count + 1));
site = Handle<AllocationSite>::cast(global_handles->Create(
AllocationSite::cast(heap->allocation_sites_list())));
site->set_memento_found_count(memento_found_bump);
CompileRun("%OptimizeFunctionOnNextCall(bar);");
CompileRun("bar(true);");
// The last call should have caused `foo` to bail out of compilation
// due to dependency change (the pretenuring decision in this case).
// This will cause recompilation.
// Check `bar` can get optimized again, meaning the compiler state is
// recoverable from this point.
CompileRun(
"%PrepareFunctionForOptimization(bar);"
"%OptimizeFunctionOnNextCall(bar);");
CompileRun("bar();");
Handle<Object> foo_obj =
JSReceiver::GetProperty(i_isolate, i_isolate->global_object(), "bar")
.ToHandleChecked();
Handle<JSFunction> bar = Handle<JSFunction>::cast(foo_obj);
CHECK(bar->IsOptimized());
}
}
isolate->Exit();
isolate->Dispose();
}
} // namespace internal
} // namespace v8