abc35080b3
This stub will be used as the basis of a Math.floor-specific CallIC to detect and track calls to floor that return -0. Along the way: - Create a TurboFanCodeStub super class from which the StringLength and MathRound TF stubs derive. - Fix the ugly hack that passes the first stub parameter as the "this" pointer in the the TF-compiled JS function. - Fix bugs in the ia32/x64 disassembler. Review URL: https://codereview.chromium.org/1137703002 Cr-Commit-Position: refs/heads/master@{#28339}
104 lines
3.9 KiB
C++
104 lines
3.9 KiB
C++
// Copyright 2015 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "src/bootstrapper.h"
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#include "src/code-stubs.h"
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#include "src/compiler/common-operator.h"
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#include "src/compiler/graph.h"
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#include "src/compiler/js-graph.h"
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#include "src/compiler/js-operator.h"
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#include "src/compiler/linkage.h"
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#include "src/compiler/machine-operator.h"
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#include "src/compiler/pipeline.h"
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#include "src/parser.h"
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#include "test/cctest/compiler/function-tester.h"
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#if V8_TURBOFAN_TARGET
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using namespace v8::internal;
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using namespace v8::internal::compiler;
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TEST(RunMathFloorStub) {
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HandleAndZoneScope scope;
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Isolate* isolate = scope.main_isolate();
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// Create code and an accompanying descriptor.
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MathFloorStub stub(isolate);
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Handle<Code> code = stub.GenerateCode();
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Zone* zone = scope.main_zone();
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CompilationInfo info(&stub, isolate, zone);
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CallDescriptor* descriptor = Linkage::ComputeIncoming(zone, &info);
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// Create a function to call the code using the descriptor.
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Graph graph(zone);
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CommonOperatorBuilder common(zone);
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JSOperatorBuilder javascript(zone);
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MachineOperatorBuilder machine(zone);
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JSGraph js(isolate, &graph, &common, &javascript, &machine);
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// FunctionTester (ab)uses a 2-argument function
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Node* start = graph.NewNode(common.Start(2));
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// Parameter 0 is the number to round
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Node* numberParam = graph.NewNode(common.Parameter(1), start);
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Unique<HeapObject> u = Unique<HeapObject>::CreateImmovable(code);
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Node* theCode = graph.NewNode(common.HeapConstant(u));
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Node* dummyContext = graph.NewNode(common.NumberConstant(0.0));
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Node* call = graph.NewNode(common.Call(descriptor), theCode,
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js.UndefinedConstant(), js.UndefinedConstant(),
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numberParam, dummyContext, start, start);
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Node* ret = graph.NewNode(common.Return(), call, call, start);
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Node* end = graph.NewNode(common.End(), ret);
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graph.SetStart(start);
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graph.SetEnd(end);
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FunctionTester ft(&graph);
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Handle<Object> value = ft.Val(1.5);
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Handle<Object> result = ft.Call(value, value).ToHandleChecked();
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CHECK_EQ(1, Smi::cast(*result)->value());
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}
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TEST(RunStringLengthTFStub) {
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HandleAndZoneScope scope;
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Isolate* isolate = scope.main_isolate();
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Zone* zone = scope.main_zone();
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// Create code and an accompanying descriptor.
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StringLengthTFStub stub(isolate);
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Handle<Code> code = stub.GenerateCode();
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CompilationInfo info(&stub, isolate, zone);
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CallDescriptor* descriptor = Linkage::ComputeIncoming(zone, &info);
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// Create a function to call the code using the descriptor.
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Graph graph(zone);
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CommonOperatorBuilder common(zone);
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// FunctionTester (ab)uses a 2-argument function
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Node* start = graph.NewNode(common.Start(2));
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// Parameter 0 is the receiver
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Node* receiverParam = graph.NewNode(common.Parameter(1), start);
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Node* nameParam = graph.NewNode(common.Parameter(2), start);
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Unique<HeapObject> u = Unique<HeapObject>::CreateImmovable(code);
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Node* theCode = graph.NewNode(common.HeapConstant(u));
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Node* dummyContext = graph.NewNode(common.NumberConstant(0.0));
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Node* call = graph.NewNode(common.Call(descriptor), theCode, receiverParam,
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nameParam, dummyContext, start, start);
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Node* ret = graph.NewNode(common.Return(), call, call, start);
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Node* end = graph.NewNode(common.End(), ret);
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graph.SetStart(start);
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graph.SetEnd(end);
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FunctionTester ft(&graph);
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// Actuall call through to the stub, verifying its result.
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const char* testString = "Und das Lamm schrie HURZ!";
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Handle<JSReceiver> receiverArg =
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Object::ToObject(isolate, ft.Val(testString)).ToHandleChecked();
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Handle<String> nameArg = ft.Val("length");
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Handle<Object> result = ft.Call(receiverArg, nameArg).ToHandleChecked();
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CHECK_EQ(static_cast<int>(strlen(testString)), Smi::cast(*result)->value());
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}
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#endif // V8_TURBOFAN_TARGET
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