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// Copyright 2015 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "src/bootstrapper.h"
#include "src/callable.h"
#include "src/code-stubs.h"
#include "src/compilation-info.h"
#include "src/compiler/common-operator.h"
#include "src/compiler/graph.h"
#include "src/compiler/js-graph.h"
#include "src/compiler/js-operator.h"
#include "src/compiler/linkage.h"
#include "src/compiler/machine-operator.h"
#include "src/compiler/pipeline.h"
#include "src/objects-inl.h"
#include "test/cctest/compiler/function-tester.h"
namespace v8 {
namespace internal {
namespace compiler {
class StubTester {
public:
StubTester(Isolate* isolate, Zone* zone, CodeStub* stub)
: zone_(zone),
info_(ArrayVector("test"), isolate, zone, Code::STUB),
interface_descriptor_(stub->GetCallInterfaceDescriptor()),
descriptor_(Linkage::GetStubCallDescriptor(
isolate, zone, interface_descriptor_,
stub->GetStackParameterCount(), CallDescriptor::kNoFlags,
Operator::kNoProperties)),
graph_(zone_),
common_(zone_),
tester_(InitializeFunctionTester(stub->GetCode()),
GetParameterCountWithContext()) {}
StubTester(Isolate* isolate, Zone* zone, Builtins::Name name)
: zone_(zone),
info_(ArrayVector("test"), isolate, zone, Code::STUB),
interface_descriptor_(
Builtins::CallableFor(isolate, name).descriptor()),
descriptor_(Linkage::GetStubCallDescriptor(
isolate, zone, interface_descriptor_,
interface_descriptor_.GetStackParameterCount(),
CallDescriptor::kNoFlags, Operator::kNoProperties)),
graph_(zone_),
common_(zone_),
tester_(InitializeFunctionTester(
Handle<Code>(isolate->builtins()->builtin(name))),
GetParameterCountWithContext()) {}
template <typename... Args>
Handle<Object> Call(Args... args) {
DCHECK_EQ(interface_descriptor_.GetParameterCount(), sizeof...(args));
MaybeHandle<Object> result =
tester_.Call(args..., Handle<HeapObject>(tester_.function->context()))
.ToHandleChecked();
return result.ToHandleChecked();
}
FunctionTester& ft() { return tester_; }
private:
Graph* InitializeFunctionTester(Handle<Code> stub) {
// Add target, effect and control.
int node_count = GetParameterCountWithContext() + 3;
// Add extra inputs for the JSFunction parameter and the receiver (which for
// the tester is always undefined) to the start node.
Node* start =
graph_.NewNode(common_.Start(GetParameterCountWithContext() + 2));
Node** node_array = zone_->NewArray<Node*>(node_count);
node_array[0] = graph_.NewNode(common_.HeapConstant(stub));
for (int i = 0; i < GetParameterCountWithContext(); ++i) {
CHECK(IsAnyTagged(descriptor_->GetParameterType(i).representation()));
node_array[i + 1] = graph_.NewNode(common_.Parameter(i + 1), start);
}
node_array[node_count - 2] = start;
node_array[node_count - 1] = start;
Node* call =
graph_.NewNode(common_.Call(descriptor_), node_count, &node_array[0]);
Node* zero = graph_.NewNode(common_.Int32Constant(0));
Node* ret = graph_.NewNode(common_.Return(), zero, call, call, start);
Node* end = graph_.NewNode(common_.End(1), ret);
graph_.SetStart(start);
graph_.SetEnd(end);
return &graph_;
}
int GetParameterCountWithContext() {
return interface_descriptor_.GetParameterCount() + 1;
}
Zone* zone_;
CompilationInfo info_;
CallInterfaceDescriptor interface_descriptor_;
CallDescriptor* descriptor_;
Graph graph_;
CommonOperatorBuilder common_;
FunctionTester tester_;
};
TEST(RunStringLengthStub) {
HandleAndZoneScope scope;
Isolate* isolate = scope.main_isolate();
Zone* zone = scope.main_zone();
StubTester tester(isolate, zone, Builtins::kLoadIC_StringLength);
// Actuall call through to the stub, verifying its result.
const char* testString = "Und das Lamm schrie HURZ!";
Handle<Object> receiverArg =
Object::ToObject(isolate, tester.ft().Val(testString)).ToHandleChecked();
Handle<Object> nameArg = tester.ft().Val("length");
Handle<Object> slot = tester.ft().Val(0.0);
Handle<Object> vector = tester.ft().Val(0.0);
Handle<Object> result = tester.Call(receiverArg, nameArg, slot, vector);
CHECK_EQ(static_cast<int>(strlen(testString)), Smi::ToInt(*result));
}
} // namespace compiler
} // namespace internal
} // namespace v8
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