Add pass to process input and output alias hint info #1273
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Yancey1989
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Jan 5, 2024
tao_compiler/mlir/disc/BUILD
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| ":pass_details", | ||
| ":placement_utils", | ||
| ":rng_uniform_custom_call", | ||
| ":topk_custom_call", |
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please polish the dependencies, this target do not need qconv_custom_call at least.
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In this pr, we provide a mechanism to do memory buffer reuse optimization between module inputs and outputs. Frontend of DISC needs to provide information as module attribute in the form of
input_output_alias_paramsandinput_output_alias_outputs. For example, if you want to reuse the 3rd output tensor and 14th input tensor, 4th output tensor and 2nd input tensor of main module function, you need to provide these two attributes like:DISC will parse this information and try to do buffer reuse.
It should be noted that DISC's handling of input_output_alias information adopts a try-best strategy, which means that it does not guarantee the successful execution of all input-output aliases, but this does not affect the correctness of end-to-end execution. And this pr has no side-effect for other passes.