onnxruntime

bdd52fa1 - Propagate outer scope type info to subgraphs during verification (#27707)

Propagate outer scope type info to subgraphs during verification (#27707) ## Summary - Fix ORT raising "does not have type information set by parent node" when a subgraph references an initializer declared in the outer (parent) graph without explicit `value_info` in the subgraph - Propagate type info from implicit input defs to subgraph NodeArgs before subgraph verification in `VerifyNodeAndOpMatch` - Add regression test with an `If` node whose subgraph references an outer scope initializer without `value_info` ## Motivation Fixes #24880 When a node's op schema type inference function does not invoke subgraph inferencing (e.g., contrib ops like `BeamSearch`, `GreedySearch`, `WhisperBeamSearch`, `Sampling`), `InferAndVerifySubgraphTypes` is never called. This means type info from outer scope values — such as initializers declared in the parent graph — is never propagated to the subgraph's NodeArgs. When the subgraph is later verified in the second pass of `VerifyNodeAndOpMatch`, nodes referencing these outer scope values fail with a null type error. The existing workaround in `convert_generation.py` (manually adding `value_info` entries for moved initializers) confirms this gap in the type propagation path. ## Changes **`onnxruntime/core/graph/graph.cc`**: In `VerifyNodeAndOpMatch`'s subgraph verification loop, propagate type info from the containing node's `implicit_input_defs` to the subgraph's NodeArgs before calling `VerifyNodeAndOpMatch` on the subgraph. The propagation is guarded by `subgraph_nodearg->Type() == nullptr`, making it a safe no-op for standard ONNX ops (If/Loop/Scan) where `InferAndVerifySubgraphTypes` already set the types. For nested subgraphs, the recursive call to `VerifyNodeAndOpMatch` handles propagation at each level. **`onnxruntime/test/ir/graph_test.cc`**: Add `OuterScopeInitializerTypeInfoPropagatedToSubgraph` test that constructs a model proto with an `If` node whose subgraphs reference an outer graph initializer without `value_info`, and verifies `Model::Load` (which calls `Graph::Resolve`) succeeds. ## Test Plan - [ ] New C++ unit test `OuterScopeInitializerTypeInfoPropagatedToSubgraph` verifies model resolution succeeds - [ ] Existing `graph_test.cc` tests continue to pass (no regression in type inference for standard ONNX ops) - [ ] Existing control flow tests (If/Loop/Scan) continue to pass - [ ] CI lint checks pass (verified locally with `lintrunner`)