Generalize builtins inlining flag to allow forced inlining of any function

src/hydrogen.cc

 // Copyright 2013 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/hydrogen.h"
 
 #include <sstream>
 
 #include "src/v8.h"
 
@@ skipping 7933 matching lines @@
 
 
 int HOptimizedGraphBuilder::InliningAstSize(Handle<JSFunction> target) {
   if (!FLAG_use_inlining) return kNotInlinable;
 
   // Precondition: call is monomorphic and we have found a target with the
   // appropriate arity.
   Handle<JSFunction> caller = current_info()->closure();
   Handle<SharedFunctionInfo> target_shared(target->shared());
 
-  // Always inline builtins marked for inlining.
+  // Always inline functions that force inlining.
+  if (target_shared->force_inline()) {
+    return 0;
+  }
   if (target->IsBuiltin()) {
-    return target_shared->inline_builtin() ? 0 : kNotInlinable;
+    return kNotInlinable;
   }
 
   if (target_shared->IsApiFunction()) {
     TraceInline(target, caller, "target is api function");
     return kNotInlinable;
   }
 
   // Do a quick check on source code length to avoid parsing large
   // inlining candidates.
   if (target_shared->SourceSize() >
@@ skipping 5160 matching lines @@
   if (ShouldProduceTraceOutput()) {
     isolate()->GetHTracer()->TraceHydrogen(name(), graph_);
   }
 
 #ifdef DEBUG
   graph_->Verify(false);  // No full verify.
 #endif
 }
 
 } }  // namespace v8::internal