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1 // Copyright 2014 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 #include "src/v8.h"
6 
7 #include "src/compiler.h"
8 #include "src/zone.h"
9 
10 #include "src/compiler/common-operator.h"
11 #include "src/compiler/generic-node-inl.h"
12 #include "src/compiler/graph.h"
13 #include "src/compiler/linkage.h"
14 #include "src/compiler/machine-operator.h"
15 #include "src/compiler/node.h"
16 #include "src/compiler/operator.h"
17 #include "src/compiler/pipeline.h"
18 #include "src/compiler/schedule.h"
19 #include "test/cctest/cctest.h"
20 
21 #if V8_TURBOFAN_TARGET
22 
23 using namespace v8::internal;
24 using namespace v8::internal::compiler;
25 
26 static SimpleOperator dummy_operator(IrOpcode::kParameter, Operator::kNoWrite,
27                                      0, 0, "dummy");
28 
29 // So we can get a real JS function.
Compile(const char * source)30 static Handle<JSFunction> Compile(const char* source) {
31   Isolate* isolate = CcTest::i_isolate();
32   Handle<String> source_code = isolate->factory()
33                                    ->NewStringFromUtf8(CStrVector(source))
34                                    .ToHandleChecked();
35   Handle<SharedFunctionInfo> shared_function = Compiler::CompileScript(
36       source_code, Handle<String>(), 0, 0, false,
37       Handle<Context>(isolate->native_context()), NULL, NULL,
38       v8::ScriptCompiler::kNoCompileOptions, NOT_NATIVES_CODE);
39   return isolate->factory()->NewFunctionFromSharedFunctionInfo(
40       shared_function, isolate->native_context());
41 }
42 
43 
TEST(TestLinkageCreate)44 TEST(TestLinkageCreate) {
45   InitializedHandleScope handles;
46   Handle<JSFunction> function = Compile("a + b");
47   CompilationInfoWithZone info(function);
48   Linkage linkage(&info);
49 }
50 
51 
TEST(TestLinkageJSFunctionIncoming)52 TEST(TestLinkageJSFunctionIncoming) {
53   InitializedHandleScope handles;
54 
55   const char* sources[] = {"(function() { })", "(function(a) { })",
56                            "(function(a,b) { })", "(function(a,b,c) { })"};
57 
58   for (int i = 0; i < 3; i++) {
59     i::HandleScope handles(CcTest::i_isolate());
60     Handle<JSFunction> function = v8::Utils::OpenHandle(
61         *v8::Handle<v8::Function>::Cast(CompileRun(sources[i])));
62     CompilationInfoWithZone info(function);
63     Linkage linkage(&info);
64 
65     CallDescriptor* descriptor = linkage.GetIncomingDescriptor();
66     CHECK_NE(NULL, descriptor);
67 
68     CHECK_EQ(1 + i, descriptor->JSParameterCount());
69     CHECK_EQ(1, descriptor->ReturnCount());
70     CHECK_EQ(Operator::kNoProperties, descriptor->properties());
71     CHECK_EQ(true, descriptor->IsJSFunctionCall());
72   }
73 }
74 
75 
TEST(TestLinkageCodeStubIncoming)76 TEST(TestLinkageCodeStubIncoming) {
77   Isolate* isolate = CcTest::InitIsolateOnce();
78   CompilationInfoWithZone info(static_cast<HydrogenCodeStub*>(NULL), isolate);
79   Linkage linkage(&info);
80   // TODO(titzer): test linkage creation with a bonafide code stub.
81   // this just checks current behavior.
82   CHECK_EQ(NULL, linkage.GetIncomingDescriptor());
83 }
84 
85 
TEST(TestLinkageJSCall)86 TEST(TestLinkageJSCall) {
87   HandleAndZoneScope handles;
88   Handle<JSFunction> function = Compile("a + c");
89   CompilationInfoWithZone info(function);
90   Linkage linkage(&info);
91 
92   for (int i = 0; i < 32; i++) {
93     CallDescriptor* descriptor = linkage.GetJSCallDescriptor(i);
94     CHECK_NE(NULL, descriptor);
95     CHECK_EQ(i, descriptor->JSParameterCount());
96     CHECK_EQ(1, descriptor->ReturnCount());
97     CHECK_EQ(Operator::kNoProperties, descriptor->properties());
98     CHECK_EQ(true, descriptor->IsJSFunctionCall());
99   }
100 }
101 
102 
TEST(TestLinkageRuntimeCall)103 TEST(TestLinkageRuntimeCall) {
104   // TODO(titzer): test linkage creation for outgoing runtime calls.
105 }
106 
107 
TEST(TestLinkageStubCall)108 TEST(TestLinkageStubCall) {
109   // TODO(titzer): test linkage creation for outgoing stub calls.
110 }
111 
112 
113 #endif  // V8_TURBOFAN_TARGET
114