Worked on expanding Wasmtime’s s390x code generation by implementing floating point bitwise operations in the Cranelift repository. Developed lowerings for NOT, AND, OR, and XOR on floating point registers, addressing a runtime panic by introducing FP-aware logic and leveraging s390x vector instruction paths. Employed Rust for low-level programming and applied compiler design principles to ensure robust integration. Adopted test-driven development, creating comprehensive tests to validate correctness and prevent regressions. This work enhanced Wasmtime’s reliability and broadened platform support for floating point workloads, reducing maintenance risk and improving the overall capability of s390x code generation within the project.