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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/code-stubs.h"
      6 #include "src/compiler.h"
      7 #include "src/parsing/parser.h"
      8 #include "src/zone.h"
      9 
     10 #include "src/code-factory.h"
     11 #include "src/compiler/common-operator.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 namespace v8 {
     22 namespace internal {
     23 namespace compiler {
     24 
     25 static Operator dummy_operator(IrOpcode::kParameter, Operator::kNoWrite,
     26                                "dummy", 0, 0, 0, 0, 0, 0);
     27 
     28 // So we can get a real JS function.
     29 static Handle<JSFunction> Compile(const char* source) {
     30   Isolate* isolate = CcTest::i_isolate();
     31   Handle<String> source_code = isolate->factory()
     32                                    ->NewStringFromUtf8(CStrVector(source))
     33                                    .ToHandleChecked();
     34   Handle<SharedFunctionInfo> shared = Compiler::GetSharedFunctionInfoForScript(
     35       source_code, Handle<String>(), 0, 0, v8::ScriptOriginOptions(),
     36       Handle<Object>(), Handle<Context>(isolate->native_context()), NULL, NULL,
     37       v8::ScriptCompiler::kNoCompileOptions, NOT_NATIVES_CODE, false);
     38   return isolate->factory()->NewFunctionFromSharedFunctionInfo(
     39       shared, isolate->native_context());
     40 }
     41 
     42 
     43 TEST(TestLinkageCreate) {
     44   HandleAndZoneScope handles;
     45   Handle<JSFunction> function = Compile("a + b");
     46   ParseInfo parse_info(handles.main_zone(), function);
     47   CompilationInfo info(&parse_info, function);
     48   CallDescriptor* descriptor = Linkage::ComputeIncoming(info.zone(), &info);
     49   CHECK(descriptor);
     50 }
     51 
     52 
     53 TEST(TestLinkageJSFunctionIncoming) {
     54   const char* sources[] = {"(function() { })", "(function(a) { })",
     55                            "(function(a,b) { })", "(function(a,b,c) { })"};
     56 
     57   for (int i = 0; i < 3; i++) {
     58     HandleAndZoneScope handles;
     59     Handle<JSFunction> function =
     60         Handle<JSFunction>::cast(v8::Utils::OpenHandle(
     61             *v8::Local<v8::Function>::Cast(CompileRun(sources[i]))));
     62     ParseInfo parse_info(handles.main_zone(), function);
     63     CompilationInfo info(&parse_info, function);
     64     CallDescriptor* descriptor = Linkage::ComputeIncoming(info.zone(), &info);
     65     CHECK(descriptor);
     66 
     67     CHECK_EQ(1 + i, static_cast<int>(descriptor->JSParameterCount()));
     68     CHECK_EQ(1, static_cast<int>(descriptor->ReturnCount()));
     69     CHECK_EQ(Operator::kNoProperties, descriptor->properties());
     70     CHECK_EQ(true, descriptor->IsJSFunctionCall());
     71   }
     72 }
     73 
     74 
     75 TEST(TestLinkageJSCall) {
     76   HandleAndZoneScope handles;
     77   Handle<JSFunction> function = Compile("a + c");
     78   ParseInfo parse_info(handles.main_zone(), function);
     79   CompilationInfo info(&parse_info, function);
     80 
     81   for (int i = 0; i < 32; i++) {
     82     CallDescriptor* descriptor = Linkage::GetJSCallDescriptor(
     83         info.zone(), false, i, CallDescriptor::kNoFlags);
     84     CHECK(descriptor);
     85     CHECK_EQ(i, static_cast<int>(descriptor->JSParameterCount()));
     86     CHECK_EQ(1, static_cast<int>(descriptor->ReturnCount()));
     87     CHECK_EQ(Operator::kNoProperties, descriptor->properties());
     88     CHECK_EQ(true, descriptor->IsJSFunctionCall());
     89   }
     90 }
     91 
     92 
     93 TEST(TestLinkageRuntimeCall) {
     94   // TODO(titzer): test linkage creation for outgoing runtime calls.
     95 }
     96 
     97 
     98 TEST(TestLinkageStubCall) {
     99   Isolate* isolate = CcTest::InitIsolateOnce();
    100   Zone zone(isolate->allocator());
    101   Callable callable = CodeFactory::ToNumber(isolate);
    102   CompilationInfo info(ArrayVector("test"), isolate, &zone,
    103                        Code::ComputeFlags(Code::STUB));
    104   CallDescriptor* descriptor = Linkage::GetStubCallDescriptor(
    105       isolate, &zone, callable.descriptor(), 0, CallDescriptor::kNoFlags,
    106       Operator::kNoProperties);
    107   CHECK(descriptor);
    108   CHECK_EQ(0, static_cast<int>(descriptor->StackParameterCount()));
    109   CHECK_EQ(1, static_cast<int>(descriptor->ReturnCount()));
    110   CHECK_EQ(Operator::kNoProperties, descriptor->properties());
    111   CHECK_EQ(false, descriptor->IsJSFunctionCall());
    112   // TODO(titzer): test linkage creation for outgoing stub calls.
    113 }
    114 
    115 }  // namespace compiler
    116 }  // namespace internal
    117 }  // namespace v8
    118