Support for general data types in the frontend

[chhzh123]

Based on the example in samples folder, I found ScaleHLS can only support int and float types as inputs. If I try to use other types like bool and ap_int<N>, it will tell me the type name is unknown. Is this the limitation of Polygeist or simply not implemented by ScaleHLS?

[hanchenye]

Hi @chhzh123, I think you should be able to parse in bool type by including stdbool.h. Meanwhile, you'll need to set -I <location of your C headers> when calling mlir-clang. For ap_int<N>, because it's from Xilinx HLS library, I'm not sure whether there's a path to parse it in today's mlir-clang.

[chhzh123]

Thanks for your reply! I actually noticed you had test cases for arbitrary integers and also had corresponding HLS codegen, so does that mean scalehls-opt can support those types if I directly code in MLIR instead of writing a C program?