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test/cctest/compiler/test-linkage.cc

Index: test/cctest/compiler/test-linkage.cc
diff --git a/test/cctest/compiler/test-linkage.cc b/test/cctest/compiler/test-linkage.cc
new file mode 100644
index 0000000000000000000000000000000000000000..6d9453f7c46e48f4be33df3e72e4c0960ff4028b
--- /dev/null
+++ b/test/cctest/compiler/test-linkage.cc
@@ -0,0 +1,113 @@
+// Copyright 2014 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/v8.h"
+
+#include "src/compiler.h"
+#include "src/zone.h"
+
+#include "src/compiler/common-operator.h"
+#include "src/compiler/generic-node-inl.h"
+#include "src/compiler/graph.h"
+#include "src/compiler/linkage.h"
+#include "src/compiler/machine-operator.h"
+#include "src/compiler/node.h"
+#include "src/compiler/operator.h"
+#include "src/compiler/pipeline.h"
+#include "src/compiler/schedule.h"
+#include "test/cctest/cctest.h"
+
+#if V8_TURBOFAN_TARGET
+
+using namespace v8::internal;
+using namespace v8::internal::compiler;
+
+static SimpleOperator dummy_operator(IrOpcode::kParameter, Operator::kNoWrite,
+                                     0, 0, "dummy");
+
+// So we can get a real JS function.
+static Handle<JSFunction> Compile(const char* source) {
+  Isolate* isolate = CcTest::i_isolate();
+  Handle<String> source_code = isolate->factory()
+                                   ->NewStringFromUtf8(CStrVector(source))
+                                   .ToHandleChecked();
+  Handle<SharedFunctionInfo> shared_function = Compiler::CompileScript(
+      source_code, Handle<String>(), 0, 0, false,
+      Handle<Context>(isolate->native_context()), NULL, NULL,
+      v8::ScriptCompiler::kNoCompileOptions, NOT_NATIVES_CODE);
+  return isolate->factory()->NewFunctionFromSharedFunctionInfo(
+      shared_function, isolate->native_context());
+}
+
+
+TEST(TestLinkageCreate) {
+  InitializedHandleScope handles;
+  Handle<JSFunction> function = Compile("a + b");
+  CompilationInfoWithZone info(function);
+  Linkage linkage(&info);
+}
+
+
+TEST(TestLinkageJSFunctionIncoming) {
+  InitializedHandleScope handles;
+
+  const char* sources[] = {"(function() { })", "(function(a) { })",
+                           "(function(a,b) { })", "(function(a,b,c) { })"};
+
+  for (int i = 0; i < 3; i++) {
+    i::HandleScope handles(CcTest::i_isolate());
+    Handle<JSFunction> function = v8::Utils::OpenHandle(
+        *v8::Handle<v8::Function>::Cast(CompileRun(sources[i])));
+    CompilationInfoWithZone info(function);
+    Linkage linkage(&info);
+
+    CallDescriptor* descriptor = linkage.GetIncomingDescriptor();
+    CHECK_NE(NULL, descriptor);
+
+    CHECK_EQ(1 + i, descriptor->ParameterCount());
+    CHECK_EQ(1, descriptor->ReturnCount());
+    CHECK_EQ(Operator::kNoProperties, descriptor->properties());
+    CHECK_EQ(true, descriptor->IsJSFunctionCall());
+  }
+}
+
+
+TEST(TestLinkageCodeStubIncoming) {
+  Isolate* isolate = CcTest::InitIsolateOnce();
+  CompilationInfoWithZone info(static_cast<HydrogenCodeStub*>(NULL), isolate);
+  Linkage linkage(&info);
+  // TODO(titzer): test linkage creation with a bonafide code stub.
+  // this just checks current behavior.
+  CHECK_EQ(NULL, linkage.GetIncomingDescriptor());
+}
+
+
+TEST(TestLinkageJSCall) {
+  HandleAndZoneScope handles;
+  Handle<JSFunction> function = Compile("a + c");
+  CompilationInfoWithZone info(function);
+  Linkage linkage(&info);
+
+  for (int i = 0; i < 32; i++) {
+    CallDescriptor* descriptor = linkage.GetJSCallDescriptor(i);
+    CHECK_NE(NULL, descriptor);
+    CHECK_EQ(i, descriptor->ParameterCount());
+    CHECK_EQ(1, descriptor->ReturnCount());
+    CHECK_EQ(Operator::kNoProperties, descriptor->properties());
+    CHECK_EQ(true, descriptor->IsJSFunctionCall());
+  }
+}
+
+
+TEST(TestLinkageRuntimeCall) {
+  // TODO(titzer): test linkage creation for outgoing runtime calls.
+}
+
+
+TEST(TestLinkageStubCall) {
+  // TODO(titzer): test linkage creation for outgoing stub calls.
+}
+
+
+#endif  // V8_TURBOFAN_TARGET