[v8-dev] ARM: safepoints frame optimization

src/objects-inl.h

Index: src/objects-inl.h
diff --git a/src/objects-inl.h b/src/objects-inl.h
index ec2ffdb5373703bc3611c3cc7fa39798a29556fe..a62334a7943a9573f59773cff5cc6f50eda66ad7 100644
--- a/src/objects-inl.h
+++ b/src/objects-inl.h
@@ -99,6 +99,12 @@ PropertyDetails PropertyDetails::AsDeleted() const {
   void holder::set_##name(int value) { WRITE_INT_FIELD(this, offset, value); }
 
 
+#define REGLIST_ACCESSORS(holder, name, offset)                        \
+  RegList holder::name() { return READ_REGLIST_FIELD(this, offset); }  \
+  void holder::set_##name(RegList value)                               \
+      { WRITE_REGLIST_FIELD(this, offset, value); }
+
+
 #define ACCESSORS(holder, name, type, offset)                           \
   type* holder::name() { return type::cast(READ_FIELD(this, offset)); } \
   void holder::set_##name(type* value, WriteBarrierMode mode) {         \
@@ -1184,6 +1190,12 @@ MaybeObject* Object::GetProperty(Name* key, PropertyAttributes* attributes) {
 #define WRITE_BYTE_FIELD(p, offset, value) \
   (*reinterpret_cast<byte*>(FIELD_ADDR(p, offset)) = value)
 
+#define READ_REGLIST_FIELD(p, offset) \
+  (*reinterpret_cast<RegList*>(FIELD_ADDR(p, offset)))
+
+#define WRITE_REGLIST_FIELD(p, offset, value) \
+  (*reinterpret_cast<RegList*>(FIELD_ADDR(p, offset)) = value)
+
 
 Object** HeapObject::RawField(HeapObject* obj, int byte_offset) {
   return &READ_FIELD(obj, byte_offset);
@@ -5694,6 +5706,10 @@ JSMessageObject* JSMessageObject::cast(Object* obj) {
 
 INT_ACCESSORS(Code, instruction_size, kInstructionSizeOffset)
 INT_ACCESSORS(Code, prologue_offset, kPrologueOffset)
+#if V8_TARGET_ARCH_ARM
+REGLIST_ACCESSORS(Code, registers_mask, kCoresMaskOffset)
+REGLIST_ACCESSORS(Code, double_registers_mask, kDoublesMaskOffset)
+#endif
 ACCESSORS(Code, relocation_info, ByteArray, kRelocationInfoOffset)
 ACCESSORS(Code, handler_table, FixedArray, kHandlerTableOffset)
 ACCESSORS(Code, deoptimization_data, FixedArray, kDeoptimizationDataOffset)
@@ -6746,6 +6762,7 @@ void FlexibleBodyDescriptor<start_offset>::IterateBody(HeapObject* obj,
 #undef TYPE_CHECKER
 #undef CAST_ACCESSOR
 #undef INT_ACCESSORS
+#undef REGLIST_ACCESSORS
 #undef ACCESSORS
 #undef ACCESSORS_TO_SMI
 #undef SMI_ACCESSORS
@@ -6768,6 +6785,8 @@ void FlexibleBodyDescriptor<start_offset>::IterateBody(HeapObject* obj,
 #undef WRITE_SHORT_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
+#undef READ_REGLIST_FIELD
+#undef WRITE_REGLIST_FIELD
 
 } }  // namespace v8::internal