src/cpu/aarch64/vm/macroAssembler_aarch64.cpp

rev 8690 : 8131483: aarch64: illegal stlxr instructions
Summary: Do not generate stlxr with Ws == Xn
Reviewed-by: duke

*** 3789,3800 ****
  
      cmp(end, heap_end);
      br(Assembler::HI, slow_case);
  
      // If heap_top hasn't been changed by some other thread, update it.
!     stlxr(rscratch1, end, rscratch1);
!     cbnzw(rscratch1, retry);
    }
  }
  
  void MacroAssembler::verify_tlab() {
  #ifdef ASSERT
--- 3789,3800 ----
  
      cmp(end, heap_end);
      br(Assembler::HI, slow_case);
  
      // If heap_top hasn't been changed by some other thread, update it.
!     stlxr(rscratch2, end, rscratch1);
!     cbnzw(rscratch2, retry);
    }
  }
  
  void MacroAssembler::verify_tlab() {
  #ifdef ASSERT