June 2026 monthly summary for llvm/circt focusing on debug-IR enhancements that improve debug fidelity and language interoperability. Delivered new operations in the Debug dialect to better handle enumerations and attach source-language metadata to debug values, enabling more precise and actionable debugging data while preserving performance characteristics.

Implemented a comprehensive debugging enhancement for Chisel circuit elaboration, introducing a DebugMeta model, reflection for constructor parameters, and a dedicated debug intrinsic pass to emit module, signal, and enum metadata. The changes enable explicit control over emission via the CLI flag and EmitDebugIntrinsicsAnnotation, integrate a DebugMetaEmitter into the elaboration pipeline, and provide documentation for the experimental circt_debug_* intrinsics. These updates improve observability, facilitate tooling integration with CIRCT, and establish a scalable mechanism for future introspection features.