[v8-dev] ARM: safepoints frame optimization

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index cd8999c41a3e02b0dfb418ac1ba44957c5364331..2cb43e965e55a84f99a25af00db8fded13d93e3d 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -5247,6 +5247,13 @@ class Code: public HeapObject {
   inline int prologue_offset();
   inline void set_prologue_offset(int offset);
 
+#if V8_TARGET_ARCH_ARM
+  inline RegList registers_mask();
+  inline void set_registers_mask(RegList mask);
+  inline RegList double_registers_mask();
+  inline void set_double_registers_mask(RegList mask);
+#endif
+
   // Unchecked accessors to be used during GC.
   inline ByteArray* unchecked_relocation_info();
 
@@ -5560,7 +5567,13 @@ class Code: public HeapObject {
   static const int kPrologueOffset = kKindSpecificFlags2Offset + kIntSize;
   static const int kConstantPoolOffset = kPrologueOffset + kPointerSize;
 
+#if V8_TARGET_ARCH_ARM
+  static const int kCoresMaskOffset = kConstantPoolOffset + kIntSize;
+  static const int kDoublesMaskOffset = kCoresMaskOffset + kRegListSize;
+  static const int kHeaderPaddingStart = kDoublesMaskOffset + kRegListSize;
+#else
   static const int kHeaderPaddingStart = kConstantPoolOffset + kIntSize;
+#endif
 
   // Add padding to align the instruction start following right after
   // the Code object header.