Estimate a (close) upper bound on the size of black-marked objects on each page.

src/ia32/assembler-ia32.cc

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // All Rights Reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions
 // are met:
 //
 // - Redistributions of source code must retain the above copyright notice,
 // this list of conditions and the following disclaimer.
 //
@@ skipping 689 matching lines @@
 }
 
 
 void Assembler::add(Register dst, const Operand& src) {
   EnsureSpace ensure_space(this);
   EMIT(0x03);
   emit_operand(dst, src);
 }
 
 
+void Assembler::add(const Operand& dst, Register src) {
+  EnsureSpace ensure_space(this);
+  EMIT(0x01);
+  emit_operand(src, dst);
+}
+
+
 void Assembler::add(const Operand& dst, const Immediate& x) {
   ASSERT(reloc_info_writer.last_pc() != NULL);
   EnsureSpace ensure_space(this);
   emit_arith(0, dst, x);
 }
 
 
 void Assembler::and_(Register dst, int32_t imm32) {
   and_(dst, Immediate(imm32));
 }
@@ skipping 1759 matching lines @@
     fprintf(coverage_log, "%s\n", file_line);
     fflush(coverage_log);
   }
 }
 
 #endif
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32