pytorch

08b2a251 - [export] Preserve meta["val"] on placeholders in dynamo.export(). (#88651)

[export] Preserve meta["val"] on placeholders in dynamo.export(). (#88651) Summary: Today when we transform the captured graph in the last step in export(aten_graph=True), we construct a new graph which doesn't have the all the metadata to be preserved, for example, node.meta["val"]. meta["val"] is important for writing passes and analysis on the graph later in the pipeline, we may want to preserve that on placeholder nodes. Test Plan: test_export.py:test_export_meta_val Differential Revision: D41110864 Pull Request resolved: https://github.com/pytorch/pytorch/pull/88651 Approved by: https://github.com/tugsbayasgalan, https://github.com/jansel