Generate StoreGlobal stubs with Hydrogen

src/hydrogen-instructions.cc

Index: src/hydrogen-instructions.cc
diff --git a/src/hydrogen-instructions.cc b/src/hydrogen-instructions.cc
index f69fbc9b938cc5466d859771eb707ee1b1762c54..a8dfb5bdf78d5f88521850819b15c6761b161502 100644
--- a/src/hydrogen-instructions.cc
+++ b/src/hydrogen-instructions.cc
@@ -2153,6 +2153,7 @@ HConstant::HConstant(Handle<Object> handle, Representation r)
     has_double_value_(false),
     is_internalized_string_(false),
     is_not_in_new_space_(true),
+    is_cell_(false),
     boolean_value_(handle->BooleanValue()) {
   if (handle_->IsHeapObject()) {
     Heap* heap = Handle<HeapObject>::cast(handle)->GetHeap();
@@ -2169,6 +2170,9 @@ HConstant::HConstant(Handle<Object> handle, Representation r)
     type_from_value_ = HType::TypeFromValue(handle_);
     is_internalized_string_ = handle_->IsInternalizedString();
   }
+
+  is_cell_ = !handle_.is_null() &&
+      (handle_->IsCell() || handle_->IsPropertyCell());
   Initialize(r);
 }
 
@@ -2187,6 +2191,7 @@ HConstant::HConstant(Handle<Object> handle,
       has_double_value_(false),
       is_internalized_string_(is_internalize_string),
       is_not_in_new_space_(is_not_in_new_space),
+      is_cell_(false),
       boolean_value_(boolean_value),
       type_from_value_(type) {
   ASSERT(!handle.is_null());
@@ -2206,6 +2211,7 @@ HConstant::HConstant(int32_t integer_value,
       has_double_value_(true),
       is_internalized_string_(false),
       is_not_in_new_space_(is_not_in_new_space),
+      is_cell_(false),
       boolean_value_(integer_value != 0),
       int32_value_(integer_value),
       double_value_(FastI2D(integer_value)) {
@@ -2224,6 +2230,7 @@ HConstant::HConstant(double double_value,
       has_double_value_(true),
       is_internalized_string_(false),
       is_not_in_new_space_(is_not_in_new_space),
+      is_cell_(false),
       boolean_value_(double_value != 0 && !std::isnan(double_value)),
       int32_value_(DoubleToInt32(double_value)),
       double_value_(double_value) {
@@ -2252,6 +2259,17 @@ void HConstant::Initialize(Representation r) {
 }
 
 
+bool HConstant::EmitAtUses() {
+  ASSERT(IsLinked());
+  if (block()->graph()->has_osr_loop_entry()) return true;
+  if (representation().IsDouble()) return false;
+  if (representation().IsTagged() && UseCount() > 1) {
+    return false;
+  }
+  return true;
+}
+
+
 HConstant* HConstant::CopyToRepresentation(Representation r, Zone* zone) const {
   if (r.IsSmi() && !has_smi_value_) return NULL;
   if (r.IsInteger32() && !has_int32_value_) return NULL;
@@ -3804,6 +3822,13 @@ HObjectAccess HObjectAccess::ForField(Handle<Map> map,
 }
 
 
+HObjectAccess HObjectAccess::ForCellPayload(Isolate* isolate) {
+  return HObjectAccess(
+      kInobject, Cell::kValueOffset,
+      Handle<String>(isolate->heap()->cell_value_string()));
+}
+
+
 void HObjectAccess::SetGVNFlags(HValue *instr, bool is_store) {
   // set the appropriate GVN flags for a given load or store instruction
   if (is_store) {