Worked on the microsoft/DirectXShaderCompiler repository to address a bug in HLSL IRBuilder debug location metadata, focusing on improving the accuracy of debug information during shader compilation. Using C++ and HLSL, applied compiler development and debugging skills to ensure that dbg.value calls and threadId intrinsics consistently share correct !dbg metadata. This fix enhanced DXIL readability and improved LLVM IR verification, reducing module verification failures and supporting more accurate inline scope handling. The solution aligned with upstream changes and was co-authored in collaboration, contributing to better maintainability and reliability of the shader compiler’s debug information propagation and metadata management.