Hanby Yang contributed to the espressif/llvm-project repository by implementing HLSL WaveActive intrinsics, specifically WaveActiveSum and WaveActiveMax, with cross-backend support for both SPIR-V and DXIL. This work involved developing code generation and semantic analysis in C++ and LLVM IR, along with comprehensive end-to-end tests to ensure correct lowering across shader targets. Hanby also addressed CI reliability by stabilizing the SPIR-V test environment on Ubuntu 22.04, resolving failures caused by missing Python dependencies. These efforts improved shader compute performance, enhanced cross-backend feature parity, and reduced release risk for downstream toolchains, demonstrating depth in compiler and CI/CD engineering.