src/cpu/aarch64/vm/macroAssembler_aarch64.hpp

rev 8079 : 8079203: AARCH64: Need to cater for different partner implementations
Summary: Parse /proc/cpuinfo to derive implementation specific info
Reviewed-by: aph

@@ -404,10 +404,22 @@
   }
   inline void umull(Register Rd, Register Rn, Register Rm) {
     umaddl(Rd, Rn, Rm, zr);
   }
 
+#define WRAP(INSN)                                                            \
+  void INSN(Register Rd, Register Rn, Register Rm, Register Ra) {             \
+    if ((VM_Version::cpu_cpuFeatures() & VM_Version::CPU_A53MAC) && Ra != zr) \
+      nop();                                                                  \
+    Assembler::INSN(Rd, Rn, Rm, Ra);                                          \
+  }
+
+  WRAP(madd) WRAP(msub) WRAP(maddw) WRAP(msubw)
+  WRAP(smaddl) WRAP(smsubl) WRAP(umaddl) WRAP(umsubl)
+#undef WRAP
+
+
   // macro assembly operations needed for aarch64
 
   // first two private routines for loading 32 bit or 64 bit constants
 private:
 

@@ -1093,13 +1105,10 @@
   }
 
   address read_polling_page(Register r, address page, relocInfo::relocType rtype);
   address read_polling_page(Register r, relocInfo::relocType rtype);
 
-  // Used by aarch64.ad to control code generation
-  static bool use_acq_rel_for_volatile_fields();
-
   // CRC32 code for java.util.zip.CRC32::updateBytes() instrinsic.
   void update_byte_crc32(Register crc, Register val, Register table);
   void update_word_crc32(Register crc, Register v, Register tmp,
         Register table0, Register table1, Register table2, Register table3,
         bool upper = false);

@@ -1124,14 +1133,10 @@
 
   // ISB may be needed because of a safepoint
   void maybe_isb() { isb(); }
 };
 
-// Used by aarch64.ad to control code generation
-#define treat_as_volatile(MEM_NODE)                                     \
-  (MacroAssembler::use_acq_rel_for_volatile_fields() ? (MEM_NODE)->is_volatile() : false)
-
 #ifdef ASSERT
 inline bool AbstractAssembler::pd_check_instruction_mark() { return false; }
 #endif
 
 /**