* [Enhancement] Add global memory load/store intrinsics for various vector widths (#1710)
* Introduced new intrinsics: ldg32, ldg64, ldg128, ldg256 for loading data from global memory.
* Added corresponding store intrinsics: stg32, stg64, stg128, stg256 for storing data to global memory.
* Updated built-in functions and templates to support these new operations.
* Enhanced documentation for usage examples and type checks in the language module.
* Updated CUDA code generation to utilize new intrinsics for improved performance.
* lint fix
* test fix
* Refactor buffer type annotations in global memory load/store intrinsics
Updated the type annotations for the `ldg` and `stg` functions to use `tir.Buffer` instead of the generic `Buffer` type. This change enhances type specificity and aligns with the TVM type system for better clarity and correctness in memory operations.
* lint fix
* [Enhancement] Introduce LDG/STG lowering options and transform pass
* Added configuration options to enable/disable lowering of non-predicated and predicated global memory loads/stores to ldg/stg intrinsics.
* Implemented the LowerLDGSTG transformation pass to optimize global memory access for better performance.
* Updated tests to require a minimum CUDA compute version for relevant functionality.
* Enhanced documentation for new configuration options and transformation behavior.
* lint fix
* Refactor LDG/STG intrinsic selection logic for improved readability
* Replaced switch-case statements with if-else conditions for determining the appropriate LDG operation based on byte width.
* Enhanced error handling for unsupported byte widths with a clear fatal log message.
* lint fix
* fix
* testfix
* Enhance LDGSTG pass to skip processing for CuTeDSL backend
* Added a check to skip the transformation if the target has the "cutedsl" key.
* Updated tests to require a minimum CUDA compute version of 10.0 for LDG and STG code generation tests.
* Refactor global memory load/store functions to include conditional variants
* Updated the CUDA code generation to support conditional versions of LDG and STG functions, enhancing flexibility in memory operations.
* Modified existing functions to include new conditional variants (e.g., `ldg32_conditional`, `stg32_conditional`) for better control over memory access based on predicates.
* Adjusted comments to reflect the changes in function signatures and usage.
* Update comments and input handling for LDG intrinsics to include address and optional predicate
* Modified comments for `ldg32`, `ldg64`, `ldg128`, and `ldg256` to clarify the function signatures, indicating the use of 'address' and an optional 'predicate'.
* Changed the number of inputs for these LDG functions from 2 to -1 to accommodate the new signature format.
* Add correctness verification to LDG code generation tests
* Introduced assertions to verify the correctness of generated CUDA source for `ldg32`, `ldg64`, `ldg128`, and `ldg256` functions.
* Added checks to ensure the output matches the expected reference values within specified tolerances.
* Updated test cases to enhance validation of LDG intrinsic functionality.
* test fix
* Refactor LDG and STG intrinsics to use unified naming convention
* Updated all instances of `ldg` and `stg` functions to their new names: `load_global` and `store_global`, respectively, across the codebase.
* Modified related test cases to reflect the new function names, ensuring consistency in the testing framework.
* Enhanced comments and documentation to clarify the changes in function signatures and usage.
* Update reference values in LDG256 predicated code generation test to improve accuracy
* lint fix
* Rename test function for clarity and add new test for predicated load/store global intrinsics. Update assertions to reflect new naming convention in generated kernel source.
* lint fix
* subtype cast fix
Chaofan Lin