src/hotspot/cpu/riscv/c1_LIRAssembler_arraycopy_riscv.cpp

@@ -238,10 +238,22 @@
      __ bind(cont);
      POP(src, dst);
    }
  }
  
+ void LIR_Assembler::arraycopy_inlinetype_check(Register obj, Register tmp, CodeStub* slow_path, bool is_dest, bool null_check) {
+   if (null_check) {
+     __ beqz(obj, *slow_path->entry(), /* is_far */ true);
+   }
+   if (is_dest) {
+     __ test_null_free_array_oop(obj, tmp, *slow_path->entry());
+     __ test_flat_array_oop(obj, tmp, *slow_path->entry());
+   } else {
+     __ test_flat_array_oop(obj, tmp, *slow_path->entry());
+   }
+ }
+ 
  void LIR_Assembler::emit_arraycopy(LIR_OpArrayCopy* op) {
    ciArrayKlass *default_type = op->expected_type();
    Register src = op->src()->as_register();
    Register dst = op->dst()->as_register();
    Register src_pos = op->src_pos()->as_register();

@@ -252,16 +264,29 @@
    CodeStub* stub = op->stub();
    int flags = op->flags();
    BasicType basic_type = default_type != nullptr ? default_type->element_type()->basic_type() : T_ILLEGAL;
    if (is_reference_type(basic_type)) { basic_type = T_OBJECT; }
  
+   if (flags & LIR_OpArrayCopy::always_slow_path) {
+     __ j(*stub->entry());
+     __ bind(*stub->continuation());
+     return;
+   }
+ 
    // if we don't know anything, just go through the generic arraycopy
    if (default_type == nullptr) {
      generic_arraycopy(src, src_pos, length, dst, dst_pos, stub);
      return;
    }
  
+   if (flags & LIR_OpArrayCopy::src_inlinetype_check) {
+     arraycopy_inlinetype_check(src, tmp, stub, false, (flags & LIR_OpArrayCopy::src_null_check));
+   }
+   if (flags & LIR_OpArrayCopy::dst_inlinetype_check) {
+     arraycopy_inlinetype_check(dst, tmp, stub, true, (flags & LIR_OpArrayCopy::dst_null_check));
+   }
+ 
    assert(default_type != nullptr && default_type->is_array_klass() && default_type->is_loaded(),
           "must be true at this point");
  
    arraycopy_simple_check(src, src_pos, length, dst, dst_pos, tmp, stub, flags);