tree 722f6ac3a9d04b9f44033810b151850fc19a475f
parent 6d4ab1d60278a67a804a3f6288c27e590e4c27aa
author Kuangyuan Chen <chky@google.com> 1592607079 -0700
committer Copybara-Service <copybara-worker@google.com> 1592607208 -0700

Import initialization graph in SignatureDef SavedModels as an MLIR function in
TF saved model dialect.
-Mark the init function referenced by SessionInitializerOp as an exported
function with the reserved name "__tf_saved_model_session_initializer".
-Remove variable init logic in init function if it is already imported as a global tensor.
-Add a canonicalizer to SessionInitializerOp to remove empty init functions.
-Return error on SessionInitializerOp in IREE compiler pipeline.

PiperOrigin-RevId: 317395165