Tweak the TurboFan pipeline for stub compilation.

src/runtime/runtime.h

 // Copyright 2012 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_RUNTIME_RUNTIME_H_
 #define V8_RUNTIME_RUNTIME_H_
 
 #include "src/allocation.h"
 #include "src/objects.h"
 #include "src/zone.h"
@@ skipping 695 matching lines @@
   F(MapInitialize, 1, 1)                  \
   F(MapSet, 3, 1)                         \
   F(SetAdd, 2, 1)                         \
   F(SetClear, 1, 1)                       \
   F(SetDelete, 2, 1)                      \
   F(SetGetSize, 1, 1)                     \
   F(SetHas, 2, 1)                         \
   F(SetInitialize, 1, 1)                  \
   /* Arrays */                            \
   F(HasFastPackedElements, 1, 1)          \
-  F(GetPrototype, 1, 1)
+  F(GetPrototype, 1, 1)                   \
+  /* Strings */                           \
+  F(StringLength, 1, 1)                   \
+  /* JSValue */                           \
+  F(JSValueValue, 1, 1)

[titzer, 2015/03/18 09:25:53]

We need a better name somehow...

BTW what are the checks associated with this JSValueValue? What happens if you
pass a SMI?

[Sven Panne, 2015/03/18 10:40:08]

Done.
As discussed offline: There are intentionally no checks, all intrinsics are
unsafe by definition. What we probably should do in the future is to have some
kind of type annotation which can be checked in debug builds.

 
 
 #define FOR_EACH_INTRINSIC_RETURN_OBJECT(F) \
   RUNTIME_FUNCTION_LIST_ALWAYS_1(F)         \
   RUNTIME_FUNCTION_LIST_ALWAYS_2(F)         \
   RUNTIME_FUNCTION_LIST_ALWAYS_3(F)         \
   RUNTIME_FUNCTION_LIST_DEBUGGER(F)         \
   RUNTIME_FUNCTION_LIST_I18N_SUPPORT(F)     \
   INLINE_FUNCTION_LIST(F)                   \
   INLINE_OPTIMIZED_FUNCTION_LIST(F)
@@ skipping 166 matching lines @@
 
 class DeclareGlobalsEvalFlag : public BitField<bool, 0, 1> {};
 class DeclareGlobalsNativeFlag : public BitField<bool, 1, 1> {};
 STATIC_ASSERT(LANGUAGE_END == 3);
 class DeclareGlobalsLanguageMode : public BitField<LanguageMode, 2, 2> {};
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_RUNTIME_RUNTIME_H_