[FEA]: CUDA C or PTX Injection

Comienza con test/test_bytecode.py y la cobertura existente del lanzamiento de kernels CUBIN para entender cómo se admite actualmente el uso de kernels compilados externamente. Define con los maintainers el límite previsto para la inyección de CUDA C/PTX y el comportamiento de la API; después, añade pruebas que demuestren que el código embebido puede coexistir con kernels cuTile escritos en Python.

Is this a new feature, an improvement, or a change to existing functionality?

New Feature

How would you describe the priority of this feature request?

Low (would be nice)

Please provide a clear description of problem this feature solves

According to the test_bytecode.py file, cuTile supports launching kernels provided in CUBIN format, which enables execution of CUDA C kernels compiled offline. However, this creates a strict separation between Python-authored cuTile kernels and CUDA C kernels. Users must choose one approach or the other, with no supported mechanism to combine them. As a result, it is difficult to reuse existing CUDA C or PTX code, or to optimize performance-critical regions within an otherwise Python-based cuTile kernel.

Feature Description

Add support for embedding or injecting CUDA C or PTX code into a Python-authored cuTile kernel. This would enable a hybrid programming model where most kernel logic is expressed in Python, while selected sections can be implemented in CUDA C or PTX for fine-grained performance tuning or access to low-level hardware features. This capability would improve cuTile's flexibility, allow reuse of existing CUDA C/PTX code, and make cuTile a more powerful tool for advanced CUDA kernel development.

Describe your ideal solution

Provide an API that allows directly inserting CUDA C or PTX instructions into a Python-authored cuTile kernel, analogous to asm volatile(...) in CUDA C. This API would act as a low-level escape hatch, enabling users to inline raw code at specific points in the kernel.

Describe any alternatives you have considered

No response

Additional context

No response

Contributing Guidelines

• I agree to follow cuTile Python's contributing guidelines
• I have searched the open feature requests and have found no duplicates for this feature request