Fix bug 1396: Optimized calls to API functions assumed that the receiver was a...

Fix bug 1396: Optimized calls to API functions assumed that the receiver was a JSObject, failed when compiling stub otherwise.

BUG=v8:1396
Review URL: http://codereview.chromium.org/7045002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7929 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/arm/stub-cache-arm.cc

@@ -2262,6 +2262,7 @@ MaybeObject* CallStubCompiler::CompileFastApiCall(
   // repatch it to global receiver.
   if (object->IsGlobalObject()) return heap()->undefined_value();
   if (cell != NULL) return heap()->undefined_value();
+  if (!object->IsJSObject()) return heap()->undefined_value();
   int depth = optimization.GetPrototypeDepthOfExpectedType(
             JSObject::cast(object), holder);
   if (depth == kInvalidProtoDepth) return heap()->undefined_value();

src/ia32/stub-cache-ia32.cc

@@ -2115,6 +2115,7 @@ MaybeObject* CallStubCompiler::CompileFastApiCall(
   // repatch it to global receiver.
   if (object->IsGlobalObject()) return heap()->undefined_value();
   if (cell != NULL) return heap()->undefined_value();
+  if (!object->IsJSObject()) return heap()->undefined_value();
   int depth = optimization.GetPrototypeDepthOfExpectedType(
             JSObject::cast(object), holder);
   if (depth == kInvalidProtoDepth) return heap()->undefined_value();

src/mips/stub-cache-mips.cc

@@ -2255,6 +2255,7 @@ MaybeObject* CallStubCompiler::CompileFastApiCall(
   // repatch it to global receiver.
   if (object->IsGlobalObject()) return heap->undefined_value();
   if (cell != NULL) return heap->undefined_value();
+  if (!object->IsJSObject()) return heap()->undefined_value();
   int depth = optimization.GetPrototypeDepthOfExpectedType(
             JSObject::cast(object), holder);
   if (depth == kInvalidProtoDepth) return heap->undefined_value();

src/x64/stub-cache-x64.cc

@@ -1954,6 +1954,7 @@ MaybeObject* CallStubCompiler::CompileFastApiCall(
   // repatch it to global receiver.
   if (object->IsGlobalObject()) return heap()->undefined_value();
   if (cell != NULL) return heap()->undefined_value();
+  if (!object->IsJSObject()) return heap()->undefined_value();
   int depth = optimization.GetPrototypeDepthOfExpectedType(
             JSObject::cast(object), holder);
   if (depth == kInvalidProtoDepth) return heap()->undefined_value();