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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.
     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 
     44 TEST(TestLinkageCreate) {
     45   InitializedHandleScope handles;
     46   Handle<JSFunction> function = Compile("a + b");
     47   CompilationInfoWithZone info(function);
     48   Linkage linkage(&info);
     49 }
     50 
     51 
     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 
     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 
     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 
    103 TEST(TestLinkageRuntimeCall) {
    104   // TODO(titzer): test linkage creation for outgoing runtime calls.
    105 }
    106 
    107 
    108 TEST(TestLinkageStubCall) {
    109   // TODO(titzer): test linkage creation for outgoing stub calls.
    110 }
    111 
    112 
    113 #endif  // V8_TURBOFAN_TARGET
    114