Initial shot at deoptimizing JSCallFunction in Turbofan.

src/compiler/linkage.cc

Index: src/compiler/linkage.cc
diff --git a/src/compiler/linkage.cc b/src/compiler/linkage.cc
index 466f65c8ba8397552c82e7da14c648ab811847d5..7c3a9fb24b4bd115f910476f40b702253201d7f0 100644
--- a/src/compiler/linkage.cc
+++ b/src/compiler/linkage.cc
@@ -102,6 +102,14 @@ CallDescriptor* Linkage::GetRuntimeCallDescriptor(
 }
 
 
+CallDescriptor* Linkage::GetStubCallDescriptor(
+    CodeStubInterfaceDescriptor* descriptor, int stack_parameter_count,
+    CallDescriptor::DeoptimizationSupport can_deoptimize) {
+  return GetStubCallDescriptor(descriptor, stack_parameter_count,
+                               can_deoptimize, this->info_->zone());
+}
+
+
 //==============================================================================
 // Provide unimplemented methods on unsupported architectures, to at least link.
 //==============================================================================
@@ -122,7 +130,8 @@ CallDescriptor* Linkage::GetRuntimeCallDescriptor(
 
 
 CallDescriptor* Linkage::GetStubCallDescriptor(
-    CodeStubInterfaceDescriptor* descriptor, int stack_parameter_count) {
+    CodeStubInterfaceDescriptor* descriptor, int stack_parameter_count,
+    CallDescriptor::DeoptimizationSupport can_deoptimize, Zone* zone) {
   UNIMPLEMENTED();
   return NULL;
 }