Module context 

AD context for guard-based shape resolution and value metadata queries.

During AD graph construction, linalg rules such as SVD, QR, and LU need concrete matrix dimensions to choose between structurally different subgraphs. ShapeGuardContext records those dimension comparisons as guards so cached AD graphs can later be invalidated when the observed shape relationship changes.

Structs

ShapeGuard

A recorded dimension comparison made during AD graph construction.

ShapeGuardContext

AD context providing dimension resolution, guard recording, and value metadata.

TensorMeta

Per-value tensor metadata used by AD rules.

Enums

MetadataRegistryError

Error returned when the process-global AD metadata registry is unavailable.

ShapeGuardError

Error returned when shape-guard metadata cannot be resolved.

Functions

lookup_global_metadata

Look up a single metadata entry from the global registry.

Type Aliases

ShapeGuardResult

Result type used by shape-guard metadata queries.