Tony Varghese
Compiler Engineer | LLVM Open Source Contributor
- Role
- Lead Compiler Engineer at IBM
- Location
- Bengaluru, KA, IN
- LinkedIn followers
- 500 followers
About Tony Varghese
I am a Senior Compiler Engineer at IBM, working on the OpenXL C/C++ compiler, IBM\'s LLVM-based compiler for PowerPC backend. My work spans the entire compiler stack — from frontend semantics to MLIR-based transformations and backend code generation — with a strong focus on performance, architecture-specific optimizations, and production-quality tooling. I specialize in- LLVM & Clang internals- MLIR dialect design and lowering pipelines- PowerPC backend development- High-performance instruction selection and codegen- AIX-specific compiler and tooling challenges Key Highlights- Designed and upstreamed support for Power10 XXEVAL ternary instruction, enabling fusion of logical operations and reducing instruction count on modern PowerPC systems- Leading MLIR-based compiler pipelines for mapping high-level linear algebra (Affine/Linalg/Vector) to Power10 Matrix Math Accelerator (MMA) instructions- Actively contributing to LLVM upstream while maintaining IBM production forks and internal toolchains- Building developer productivity tools for remote AIX development (VSCode/VSCodium Remote SSH)- I enjoy working at the intersection of compiler theory, hardware architecture, and real-world performance
Experience
Lead Compiler Engineer
Dec 2024 — Present · Bengaluru, IN
IBM OpenXL team contributing to the PowerPC backend of LLVM.
Education
Indian Institute of Information Technology, Allahabad
Master of Technology (M.Tech.), Wireless Communication Engineering
2015 — 2017
Lourdes Public School & Junior College, Kottayam
Higher Secondary, Mathematics and Science
2006 — 2008
Cochin University of Science and Technology
Bachelor of Technology (B.Tech.), Electronics and Communication Engineering
2008 — 2012
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