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test/cctest/compiler/function-tester.h

Index: test/cctest/compiler/function-tester.h
diff --git a/test/cctest/compiler/function-tester.h b/test/cctest/compiler/function-tester.h
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+// 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.
+
+#ifndef V8_CCTEST_COMPILER_FUNCTION_TESTER_H_
+#define V8_CCTEST_COMPILER_FUNCTION_TESTER_H_
+
+#include "src/v8.h"
+#include "test/cctest/cctest.h"
+
+#include "src/compiler.h"
+#include "src/compiler/pipeline.h"
+#include "src/execution.h"
+#include "src/full-codegen.h"
+#include "src/handles.h"
+#include "src/objects-inl.h"
+#include "src/parser.h"
+#include "src/rewriter.h"
+#include "src/scopes.h"
+
+#define USE_CRANKSHAFT 0
+
+namespace v8 {
+namespace internal {
+namespace compiler {
+
+class FunctionTester : public InitializedHandleScope {
+ public:
+  explicit FunctionTester(const char* source)
+    : isolate(main_isolate()),
+      function((FLAG_allow_natives_syntax = true, NewFunction(source))) {
+    Compile(function);
+  }
+
+  Isolate* isolate;
+  Handle<JSFunction> function;
+
+  Handle<JSFunction> Compile(Handle<JSFunction> function) {
+#if V8_TURBOFAN_TARGET
+    CompilationInfoWithZone info(function);
+
+    CHECK(Parser::Parse(&info));
+    StrictMode strict_mode = info.function()->strict_mode();
+    info.SetStrictMode(strict_mode);
+    info.SetOptimizing(BailoutId::None(), Handle<Code>(function->code()));
+    CHECK(Rewriter::Rewrite(&info));
+    CHECK(Scope::Analyze(&info));
+    CHECK_NE(NULL, info.scope());
+
+    EnsureDeoptimizationSupport(&info);
+
+    Pipeline pipeline(&info);
+    Handle<Code> code = pipeline.GenerateCode();
+
+    CHECK(!code.is_null());
+    function->ReplaceCode(*code);
+#elif USE_CRANKSHAFT
+    Handle<Code> unoptimized = Handle<Code>(function->code());
+    Handle<Code> code = Compiler::GetOptimizedCode(
+       function, unoptimized, Compiler::NOT_CONCURRENT);
+    CHECK(!code.is_null());
+#if ENABLE_DISASSEMBLER
+    if (FLAG_print_opt_code) {
+      CodeTracer::Scope tracing_scope(isolate->GetCodeTracer());
+      code->Disassemble("test code", tracing_scope.file());
+    }
+#endif
+    function->ReplaceCode(*code);
+#endif
+    return function;
+  }
+
+  static void EnsureDeoptimizationSupport(CompilationInfo* info) {
+    bool should_recompile = !info->shared_info()->has_deoptimization_support();
+    if (should_recompile) {
+      CompilationInfoWithZone unoptimized(info->shared_info());
+      // Note that we use the same AST that we will use for generating the
+      // optimized code.
+      unoptimized.SetFunction(info->function());
+      unoptimized.PrepareForCompilation(info->scope());
+      unoptimized.SetContext(info->context());
+      if (should_recompile) unoptimized.EnableDeoptimizationSupport();
+      bool succeeded = FullCodeGenerator::MakeCode(&unoptimized);
+      CHECK(succeeded);
+      Handle<SharedFunctionInfo> shared = info->shared_info();
+      shared->EnableDeoptimizationSupport(*unoptimized.code());
+    }
+  }
+
+  MaybeHandle<Object> Call(Handle<Object> a, Handle<Object> b) {
+    Handle<Object> args[] = { a, b };
+    return Execution::Call(isolate,
+                           function,
+                           undefined(),
+                           2,
+                           args,
+                           false);
+  }
+
+  void CheckThrows(Handle<Object> a, Handle<Object> b) {
+    TryCatch try_catch;
+    MaybeHandle<Object> no_result = Call(a, b);
+    CHECK(isolate->has_pending_exception());
+    CHECK(try_catch.HasCaught());
+    CHECK(no_result.is_null());
+    // TODO(mstarzinger): Temporary workaround for issue chromium:362388.
+    isolate->OptionalRescheduleException(true);
+  }
+
+  v8::Handle<v8::Message> CheckThrowsReturnMessage(Handle<Object> a,
+                                                   Handle<Object> b) {
+    TryCatch try_catch;
+    MaybeHandle<Object> no_result = Call(a, b);
+    CHECK(isolate->has_pending_exception());
+    CHECK(try_catch.HasCaught());
+    CHECK(no_result.is_null());
+    // TODO(mstarzinger): Calling OptionalRescheduleException is a dirty hack,
+    // it's the only way to make Message() not to assert because an external
+    // exception has been caught by the try_catch.
+    isolate->OptionalRescheduleException(true);
+    return try_catch.Message();
+  }
+
+  void CheckCall(Handle<Object> expected, Handle<Object> a, Handle<Object> b) {
+    Handle<Object> result = Call(a, b).ToHandleChecked();
+    CHECK(expected->SameValue(*result));
+  }
+
+  void CheckCall(Handle<Object> expected, Handle<Object> a) {
+    CheckCall(expected, a, undefined());
+  }
+
+  void CheckCall(Handle<Object> expected) {
+    CheckCall(expected, undefined(), undefined());
+  }
+
+  void CheckCall(double expected, double a, double b) {
+    CheckCall(Val(expected), Val(a), Val(b));
+  }
+
+  void CheckTrue(Handle<Object> a, Handle<Object> b) {
+    CheckCall(true_value(), a, b);
+  }
+
+  void CheckTrue(Handle<Object> a) {
+    CheckCall(true_value(), a, undefined());
+  }
+
+  void CheckTrue(double a, double b) {
+    CheckCall(true_value(), Val(a), Val(b));
+  }
+
+  void CheckFalse(Handle<Object> a, Handle<Object> b) {
+    CheckCall(false_value(), a, b);
+  }
+
+  void CheckFalse(Handle<Object> a) {
+    CheckCall(false_value(), a, undefined());
+  }
+
+  void CheckFalse(double a, double b) {
+    CheckCall(false_value(), Val(a), Val(b));
+  }
+
+  Handle<JSFunction> NewFunction(const char* source) {
+    return v8::Utils::OpenHandle(
+      *v8::Handle<v8::Function>::Cast(CompileRun(source)));
+  }
+
+  Handle<JSObject> NewObject(const char* source) {
+    return v8::Utils::OpenHandle(
+      *v8::Handle<v8::Object>::Cast(CompileRun(source)));
+  }
+
+  Handle<String> Val(const char* string) {
+    return isolate->factory()->InternalizeUtf8String(string);
+  }
+
+  Handle<Object> Val(double value) {
+    return isolate->factory()->NewNumber(value);
+  }
+
+  Handle<Object> infinity() {
+    return isolate->factory()->infinity_value();
+  }
+
+  Handle<Object> minus_infinity() {
+    return Val(-V8_INFINITY);
+  }
+
+  Handle<Object> nan() {
+    return isolate->factory()->nan_value();
+  }
+
+  Handle<Object> undefined() {
+    return isolate->factory()->undefined_value();
+  }
+
+  Handle<Object> null() {
+    return isolate->factory()->null_value();
+  }
+
+  Handle<Object> true_value() {
+    return isolate->factory()->true_value();
+  }
+
+  Handle<Object> false_value() {
+    return isolate->factory()->false_value();
+  }
+};
+
+} } }  // namespace v8::internal::compiler
+
+#endif  // V8_CCTEST_COMPILER_FUNCTION_TESTER_H_