A64: Implement and use FillFields

src/a64/macro-assembler-a64.h

 // Copyright 2013 the V8 project authors. 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.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 930 matching lines @@
   // The 'temps' list is a list of X registers which can be used for scratch
   // values. The temps list must include at least one register.
   //
   // Currently, CopyFields cannot make use of more than three registers from
   // the 'temps' list.
   //
   // CopyFields expects to be able to take at least two registers from
   // MacroAssembler::TmpList().
   void CopyFields(Register dst, Register src, CPURegList temps, unsigned count);
 
+  // Starting at address in dst, initialize field_count 64-bit fields with
+  // 64-bit value in register filler. Register dst is corrupted.
+  void FillFields(Register dst,
+                  Register field_count,
+                  Register filler);
+
   // Copies a number of bytes from src to dst. All passed registers are
   // clobbered. On exit src and dst will point to the place just after where the
   // last byte was read or written and length will be zero. Hint may be used to
   // determine which is the most efficient algorithm to use for copying.
   void CopyBytes(Register dst,
                  Register src,
                  Register length,
                  Register scratch,
                  CopyHint hint = kCopyUnknown);
 
-  // Initialize fields with filler values. Fields starting at start_offset not
-  // including end_offset are overwritten with the value in filler. At the end
-  // of the loop, start_offset takes the value of end_offset.
-  void InitializeFieldsWithFiller(Register start_offset,
-                                  Register end_offset,
-                                  Register filler);
-
   // ---- String Utilities ----
 
 
   // Jump to label if either object is not a sequential ASCII string.
   // Optionally perform a smi check on the objects first.
   void JumpIfEitherIsNotSequentialAsciiStrings(
       Register first,
       Register second,
       Register scratch1,
       Register scratch2,
@@ skipping 1296 matching lines @@
 #error "Unsupported option"
 #define CODE_COVERAGE_STRINGIFY(x) #x
 #define CODE_COVERAGE_TOSTRING(x) CODE_COVERAGE_STRINGIFY(x)
 #define __FILE_LINE__ __FILE__ ":" CODE_COVERAGE_TOSTRING(__LINE__)
 #define ACCESS_MASM(masm) masm->stop(__FILE_LINE__); masm->
 #else
 #define ACCESS_MASM(masm) masm->
 #endif
 
 #endif  // V8_A64_MACRO_ASSEMBLER_A64_H_