[turbofan] Add support for inlining of builtins.

test/cctest/compiler/test-run-inlining.cc

 // 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 "test/cctest/compiler/function-tester.h"
 
 #if V8_TURBOFAN_TARGET
 
 using namespace v8::internal;
 using namespace v8::internal::compiler;
 
+namespace {
+
 // Helper to determine inline count via JavaScriptFrame::GetInlineCount.
 // Note that a count of 1 indicates that no inlining has occured.
-static void AssertInlineCount(const v8::FunctionCallbackInfo<v8::Value>& args) {
+void AssertInlineCount(const v8::FunctionCallbackInfo<v8::Value>& args) {
   StackTraceFrameIterator it(CcTest::i_isolate());
   int frames_seen = 0;
   JavaScriptFrame* topmost = it.frame();
   while (!it.done()) {
     JavaScriptFrame* frame = it.frame();
     PrintF("%d %s, inline count: %d\n", frames_seen,
            frame->function()->shared()->DebugName()->ToCString().get(),
            frame->GetInlineCount());
     frames_seen++;
     it.Advance();
   }
   CHECK_EQ(args[0]->ToInt32(args.GetIsolate())->Value(),
            topmost->GetInlineCount());
 }
 
 
-static void InstallAssertInlineCountHelper(v8::Isolate* isolate) {
+void InstallAssertInlineCountHelper(v8::Isolate* isolate) {
   v8::Local<v8::Context> context = isolate->GetCurrentContext();
   v8::Local<v8::FunctionTemplate> t =
       v8::FunctionTemplate::New(isolate, AssertInlineCount);
   context->Global()->Set(v8_str("AssertInlineCount"), t->GetFunction());
 }
 
 
-static uint32_t kInlineFlags = CompilationInfo::kInliningEnabled |
-                               CompilationInfo::kContextSpecializing |
-                               CompilationInfo::kTypingEnabled;
+const uint32_t kBuiltinInlineFlags = CompilationInfo::kBuiltinInliningEnabled |
+                                     CompilationInfo::kContextSpecializing |
+                                     CompilationInfo::kTypingEnabled;
+
+const uint32_t kInlineFlags = CompilationInfo::kInliningEnabled |
+                              CompilationInfo::kContextSpecializing |
+                              CompilationInfo::kTypingEnabled;
+
+}  // namespace
 
 
 TEST(SimpleInlining) {
   FLAG_turbo_deoptimization = true;
   FunctionTester T(
       "(function(){"
       "  function foo(s) { AssertInlineCount(2); return s; };"
       "  function bar(s, t) { return foo(s); };"
       "  return bar;"
       "})();",
@@ skipping 423 matching lines @@
       "  }"
       "  function bar() { return foo(13, 14, 15); };"
       "  return bar;"
       "})();",
       kInlineFlags);
 
   InstallAssertInlineCountHelper(CcTest::isolate());
   T.CheckCall(T.true_value(), T.Val(12), T.Val(14));
 }
 
+
+TEST(InlineBuiltin) {
+  FLAG_turbo_deoptimization = true;
+  FunctionTester T(
+      "(function () {"
+      "  function foo(s,t,u) { AssertInlineCount(2); return true; }"
+      "  function bar() { return foo(); };"
+      "  %SetInlineBuiltinFlag(foo);"
+      "  return bar;"
+      "})();",
+      kBuiltinInlineFlags);
+
+  InstallAssertInlineCountHelper(CcTest::isolate());
+  T.CheckCall(T.true_value());
+}
+
 #endif  // V8_TURBOFAN_TARGET