[rdlexporter] Fix register export on systemrdl-compiler 1.32.2

rdlexporter/src/rdlexporter/exporter.py

@@ -131,7 +131,7 @@ def _emit_property(self, properties: dict, assign_op: str = "=", endline: str =
                 print(f"Warning: Type {type(obj)} not implemented, skipping it.")
 
     def _arrays(self, component: Reg) -> str:
-        if not component.is_array:
+        if component.array_dimensions is None:
             return ""
 
         if len(component.array_dimensions) > 1:

rdlexporter/tests/snapshots/arrays.rdl

@@ -0,0 +1,22 @@
+`include "user_defined.rdl"
+
+addrmap arrays {
+    reg {
+        field {
+            desc = "Enable the block.";
+            sw = rw;
+            hw = r;
+            reset = 0x0;
+        } EN[0:0];
+    } CTRL @ 0x0;
+
+    reg {
+        field {
+            desc = "Data word.";
+            sw = rw;
+            hw = r;
+            reset = 0x0;
+        } VAL[31:0];
+    } DATA[4] @ 0x4;
+
+};

rdlexporter/tests/test_exporter.py

@@ -51,6 +51,18 @@ def test_cli_lc_ctrl_from_file(tmp_path: Path) -> None:
     _run_ip_test_from_file(tmp_path, "lc_ctrl")
 
 
+def test_cli_arrays_from_file(tmp_path: Path) -> None:
+    """Regression test for register array export.
+
+    Covers both branches of ``RdlExporter._arrays``: a plain register (``CTRL``)
+    and a register array (``DATA[4]``). Guards against relying on attributes that
+    only exist on elaborated ``Node`` objects (e.g. ``is_array``, removed from raw
+    ``Component`` objects in systemrdl-compiler 1.32.2) rather than ``Component``
+    ones (``array_dimensions``).
+    """
+    _run_ip_test_from_file(tmp_path, "arrays")
+
+
 def test_importer(tmp_path: Path) -> None:
     """Test with the SystemRDL importer."""
     input_rdl = SNAPSHOTS_DIR / "generic.rdl"