mbs-octoml opened a new pull request #9542: URL: https://github.com/apache/tvm/pull/9542
As part of #9483 we need to prepare some critical Relay passes for running after lowering and conversion to DPS. For DCE we need to make sure we never remove side-effecting let-bound expressions, such as for allocation or evaluation of an external function with unknown effectfulness. Introduce a new purity pre-pass. It makes a half-hearted attempt at accounting for functions by tracking both 'eval' and 'call' purity, but must fallback to assuming call-impurity in more difficult cases (eg calling a function passed as a parameter, calling a function projected from a tuple, etc). However it seems plenty good enough. Purity must also be accounted for when determining the usage count of let-bound variables, so reworked that. Collapsed the let-bound value accumulation pass into the usage counting pass to make up for inserting the new purity analysis pass. Thanks for contributing to TVM! Please refer to guideline https://tvm.apache.org/docs/contribute/ for useful information and tips. After the pull request is submitted, please request code reviews from [Reviewers](https://github.com/apache/incubator-tvm/blob/master/CONTRIBUTORS.md#reviewers) by @ them in the pull request thread. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
