src/hotspot/cpu/aarch64/gc/z/zBarrierSetAssembler_aarch64.cpp

rev 55444 : JDK-8226515

*** 89,113 ****
      __ mov(c_rarg0, dst);
    }
    __ mov(c_rarg1, rscratch2);
  
    int step = 4 * wordSize;
!   __ mov(rscratch1, -step);
    __ sub(sp, sp, step);
  
    for (int i = 28; i >= 4; i -= 4) {
      __ st1(as_FloatRegister(i), as_FloatRegister(i+1), as_FloatRegister(i+2),
!         as_FloatRegister(i+3), __ T1D, Address(__ post(sp, rscratch1)));
    }
  
    __ call_VM_leaf(ZBarrierSetRuntime::load_barrier_on_oop_field_preloaded_addr(decorators), 2);
  
    for (int i = 0; i <= 28; i += 4) {
      __ ld1(as_FloatRegister(i), as_FloatRegister(i+1), as_FloatRegister(i+2),
          as_FloatRegister(i+3), __ T1D, Address(__ post(sp, step)));
    }
  
    // Make sure dst has the return value.
    if (dst != r0) {
      __ mov(dst, r0);
    }
  
--- 89,116 ----
      __ mov(c_rarg0, dst);
    }
    __ mov(c_rarg1, rscratch2);
  
    int step = 4 * wordSize;
!   __ mov(rscratch2, -step);
    __ sub(sp, sp, step);
  
    for (int i = 28; i >= 4; i -= 4) {
      __ st1(as_FloatRegister(i), as_FloatRegister(i+1), as_FloatRegister(i+2),
!         as_FloatRegister(i+3), __ T1D, Address(__ post(sp, rscratch2)));
    }
+   __ st1(as_FloatRegister(0), as_FloatRegister(1), as_FloatRegister(2),
+       as_FloatRegister(3), __ T1D, Address(sp));
  
    __ call_VM_leaf(ZBarrierSetRuntime::load_barrier_on_oop_field_preloaded_addr(decorators), 2);
  
    for (int i = 0; i <= 28; i += 4) {
      __ ld1(as_FloatRegister(i), as_FloatRegister(i+1), as_FloatRegister(i+2),
          as_FloatRegister(i+3), __ T1D, Address(__ post(sp, step)));
    }
  
+ 
    // Make sure dst has the return value.
    if (dst != r0) {
      __ mov(dst, r0);
    }