src/hotspot/cpu/aarch64/c1_LIRAssembler_aarch64.cpp

remove c1 runtime1 medium slowpath

*** 2172,2183 ****
      // have to fall back to the JNI stub
      __ stp(dst,     dst_pos, Address(sp, 0*BytesPerWord));
      __ stp(length,  src_pos, Address(sp, 2*BytesPerWord));
      __ str(src,              Address(sp, 4*BytesPerWord));
  
-     address C_entry = CAST_FROM_FN_PTR(address, Runtime1::arraycopy);
      address copyfunc_addr = StubRoutines::generic_arraycopy();
  
      // The arguments are in java calling convention so we shift them
      // to C convention
      assert_different_registers(c_rarg0, j_rarg1, j_rarg2, j_rarg3, j_rarg4);
      __ mov(c_rarg0, j_rarg0);
--- 2172,2183 ----
      // have to fall back to the JNI stub
      __ stp(dst,     dst_pos, Address(sp, 0*BytesPerWord));
      __ stp(length,  src_pos, Address(sp, 2*BytesPerWord));
      __ str(src,              Address(sp, 4*BytesPerWord));
  
      address copyfunc_addr = StubRoutines::generic_arraycopy();
+     assert(copyfunc_addr != NULL, "generic arraycopy stub required");
  
      // The arguments are in java calling convention so we shift them
      // to C convention
      assert_different_registers(c_rarg0, j_rarg1, j_rarg2, j_rarg3, j_rarg4);
      __ mov(c_rarg0, j_rarg0);
***************
*** 2186,2223 ****
      assert_different_registers(c_rarg2, j_rarg3, j_rarg4);
      __ mov(c_rarg2, j_rarg2);
      assert_different_registers(c_rarg3, j_rarg4);
      __ mov(c_rarg3, j_rarg3);
      __ mov(c_rarg4, j_rarg4);
-     if (copyfunc_addr == NULL) { // Use C version if stub was not generated
-       __ mov(rscratch1, RuntimeAddress(C_entry));
-       __ blrt(rscratch1, 5, 0, 1);
-     } else {
  #ifndef PRODUCT
!       if (PrintC1Statistics) {
!         __ incrementw(ExternalAddress((address)&Runtime1::_generic_arraycopystub_cnt));
!       }
! #endif
!       __ far_call(RuntimeAddress(copyfunc_addr));
      }
  
      __ cbz(r0, *stub->continuation());
  
      // Reload values from the stack so they are where the stub
      // expects them.
      __ ldp(dst,     dst_pos, Address(sp, 0*BytesPerWord));
      __ ldp(length,  src_pos, Address(sp, 2*BytesPerWord));
      __ ldr(src,              Address(sp, 4*BytesPerWord));
  
!     if (copyfunc_addr != NULL) {
!       // r0 is -1^K where K == partial copied count
!       __ eonw(rscratch1, r0, 0);
!       // adjust length down and src/end pos up by partial copied count
!       __ subw(length, length, rscratch1);
!       __ addw(src_pos, src_pos, rscratch1);
!       __ addw(dst_pos, dst_pos, rscratch1);
!     }
      __ b(*stub->entry());
  
      __ bind(*stub->continuation());
      return;
    }
--- 2186,2216 ----
      assert_different_registers(c_rarg2, j_rarg3, j_rarg4);
      __ mov(c_rarg2, j_rarg2);
      assert_different_registers(c_rarg3, j_rarg4);
      __ mov(c_rarg3, j_rarg3);
      __ mov(c_rarg4, j_rarg4);
  #ifndef PRODUCT
!     if (PrintC1Statistics) {
!       __ incrementw(ExternalAddress((address)&Runtime1::_generic_arraycopystub_cnt));
      }
+ #endif
+     __ far_call(RuntimeAddress(copyfunc_addr));
  
      __ cbz(r0, *stub->continuation());
  
      // Reload values from the stack so they are where the stub
      // expects them.
      __ ldp(dst,     dst_pos, Address(sp, 0*BytesPerWord));
      __ ldp(length,  src_pos, Address(sp, 2*BytesPerWord));
      __ ldr(src,              Address(sp, 4*BytesPerWord));
  
!     // r0 is -1^K where K == partial copied count
!     __ eonw(rscratch1, r0, 0);
!     // adjust length down and src/end pos up by partial copied count
!     __ subw(length, length, rscratch1);
!     __ addw(src_pos, src_pos, rscratch1);
!     __ addw(dst_pos, dst_pos, rscratch1);
      __ b(*stub->entry());
  
      __ bind(*stub->continuation());
      return;
    }