[v8-dev] ARM: safepoints frame optimization

src/lithium-allocator-inl.h

Index: src/lithium-allocator-inl.h
diff --git a/src/lithium-allocator-inl.h b/src/lithium-allocator-inl.h
index 1d43b269f9ae099289819b8bb56ec554e3193676..6ad9c9e50a9226300d9ff5ad4a53c778f7ab1462 100644
--- a/src/lithium-allocator-inl.h
+++ b/src/lithium-allocator-inl.h
@@ -150,9 +150,16 @@ void UseIterator::Advance() {
 void LAllocator::SetLiveRangeAssignedRegister(LiveRange* range, int reg) {
   if (range->Kind() == DOUBLE_REGISTERS) {
     assigned_double_registers_->Add(reg);
+    if (!range->IsFixed()) {
+      modified_double_registers_ |=
+          1 << DoubleRegister::FromAllocationIndex(reg).code();
+    }
   } else {
     ASSERT(range->Kind() == GENERAL_REGISTERS);
     assigned_registers_->Add(reg);
+    if (!range->IsFixed()) {
+      modified_registers_ |= 1 << Register::FromAllocationIndex(reg).code();
+    }
   }
   range->set_assigned_register(reg, chunk()->zone());
 }