* [Enhancement] Add C host post-processing callback and improve nullable buffer handling
- Introduced a new callback for C host code generation that allows for post-processing of generated code before it is wrapped into a CSourceModule.
- Enhanced the ArgBinder to log shape variable sources and ensure safe binding of symbolic shape variables, preventing potential segmentation faults when dealing with nullable buffers.
- Added a regression test to verify that a single buffer with a symbolic shape variable must be non-null, ensuring robustness against null inputs.
* [Refactor] Clean up formatting and improve readability in C host code generation and ArgBinder
- Adjusted indentation in the C host code generation to enhance clarity.
- Reformatted comments and code structure in ArgBinder for better readability, ensuring consistent style throughout the file.
- Minor whitespace adjustments to maintain code consistency.
* feat(arg_binder): enhance shape variable handling and assertions
- Implemented special handling for comparing if_then_else expressions to simplify conditions involving NULL checks.
- Added methods to set shared shape variables and finalize deferred bindings, generating cascading if_then_else expressions and runtime assertions for non-NULL buffers.
- Updated the binding logic to defer shape variable bindings for shared variables, ensuring proper handling across multiple nullable buffers.
* refactor(arg_binder): clean up shape variable handling and remove unused code
- Removed deprecated methods for setting shared shape variables and finalizing deferred bindings, streamlining the argument binding process.
- Simplified the logic for handling shape values in the `BindDLTensor` function, ensuring immediate binding for normal shape variables.
- Enhanced clarity by eliminating unnecessary comments and code related to cascading if_then_else expressions for shared variables.
* refactor(arg_binder): enhance DLTensor binding with improved shape handling
- Replaced the single `BindDLTensor` method with `BindDLTensors` to support multiple buffers, improving flexibility in handling DLTensor bindings.
- Introduced a two-pass approach for shape variable handling, allowing for better management of symbolic dimensions and null checks.
- Updated the logic to assert non-null conditions at runtime and utilize cascaded if_then_else expressions for shape retrieval, enhancing robustness.
- Removed deprecated code and streamlined the binding process for clarity and maintainability.
* fix(test_nullable_buffer_params): improve formatting and consistency in test output
- Updated string formatting for better readability in the `test_nullable_shared_shape` function.
- Ensured consistent use of double quotes for string literals.
- Added a missing newline at the end of the file for proper formatting.
* refactor(arg_binder): simplify allocation size calculation in BindDLTensors
- Streamlined the calculation of allocation size by replacing a lambda function with a direct loop, enhancing readability and maintainability.
- Improved clarity in the null check message for data pointers, ensuring better understanding of the binding process.
* Remove debug prints from phase.py
Removed debug print statements after MakePackedAPI transformation.
Lei Wang