[CodeGen] change default dirs to use node names instead of types

src/finn/transformation/fpgadataflow/codegen_ipgen.py

@@ -46,7 +46,7 @@ def _codegen_single_node(node, model, fpgapart, clk):
         # ensure that there is a directory
         if code_gen_dir == "" or not os.path.isdir(code_gen_dir):
             code_gen_dir = make_build_dir(
-                prefix="code_gen_ipgen_" + str(node.op_type) + "_"
+                prefix="code_gen_ipgen_" + str(node.name) + "_"
             )
             inst.set_nodeattr("code_gen_dir_ipgen", code_gen_dir)
         # ensure that there is generated code inside the dir

src/finn/transformation/fpgadataflow/codegen_npysim.py

@@ -46,7 +46,7 @@ def _codegen_single_node(node, model):
         # ensure that there is a directory
         if code_gen_dir == "" or not os.path.isdir(code_gen_dir):
             code_gen_dir = make_build_dir(
-                prefix="code_gen_npysim_" + str(node.op_type) + "_"
+                prefix="code_gen_npysim_" + str(node.name) + "_"
             )
             inst.set_nodeattr("code_gen_dir_npysim", code_gen_dir)
         # ensure that there is generated code inside the dir