src/cpu/aarch64/vm/templateInterpreterGenerator_aarch64.cpp

rev 10437 : 8151775: aarch64: add support for 8.1 LSE atomic operations
Reviewed-by: aph

*** 1979,1998 ****
  
  void TemplateInterpreterGenerator::count_bytecode() {
    Register rscratch3 = r0;
    __ push(rscratch1);
    __ push(rscratch2);
    __ push(rscratch3);
    Label L;
-   __ mov(rscratch2, (address) &BytecodeCounter::_counter_value);
    __ prfm(Address(rscratch2), PSTL1STRM);
    __ bind(L);
    __ ldxr(rscratch1, rscratch2);
    __ add(rscratch1, rscratch1, 1);
    __ stxr(rscratch3, rscratch1, rscratch2);
    __ cbnzw(rscratch3, L);
    __ pop(rscratch3);
    __ pop(rscratch2);
    __ pop(rscratch1);
  }
  
  void TemplateInterpreterGenerator::histogram_bytecode(Template* t) { ; }
--- 1979,2003 ----
  
  void TemplateInterpreterGenerator::count_bytecode() {
    Register rscratch3 = r0;
    __ push(rscratch1);
    __ push(rscratch2);
+   __ mov(rscratch2, (address) &BytecodeCounter::_counter_value);
+   if (UseLSE) {
+     __ mov(rscratch1, 1);
+     __ ldadd(Assembler::xword, rscratch1, zr, rscratch2);
+   } else {
      __ push(rscratch3);
      Label L;
      __ prfm(Address(rscratch2), PSTL1STRM);
      __ bind(L);
      __ ldxr(rscratch1, rscratch2);
      __ add(rscratch1, rscratch1, 1);
      __ stxr(rscratch3, rscratch1, rscratch2);
      __ cbnzw(rscratch3, L);
      __ pop(rscratch3);
+   }
    __ pop(rscratch2);
    __ pop(rscratch1);
  }
  
  void TemplateInterpreterGenerator::histogram_bytecode(Template* t) { ; }