11/06/2026 updated
100 % available
Systems Compiler and DSP Engineer - LLVM libc, MLIR, AArch64, Floating-Point Mathematics
Bangalore, India
Only remote
About me
Systems and numerical software engineer with 20+ years at Intel. Expertise in C/C++, DSP, Cadence HiFi, GPU/Vulkan, SIMD, fixed-point and floating-point math. Merged LLVM libc and AArch64 contributions. I deliver accurate, optimized software with rigorous testing. Available for remote contract work.
Compilers
LLVM Compiler Development
Contributions to LLVM libc including merged pull requests for floating-point rounding, exponential function dispatch optimization, and AArch64 strict SVE exception preservation. Work spans libc math functions, backend metadata, and MLIR expansion passes.
Floating-Point Mathematics and Numerical Proofs
Deep expertise in floating-point representation, rounding modes, subnormal handling, and integer add/mask rounding algorithms. Formal derivations covering binary32, binary64, and binary80 encodings with correctness proofs for boundary and halfway cases.
DSP and Fixed-Point Math
Contributions to Sound Open Firmware including fixed-point math functions, HiFi SIMD saturation intrinsics, CORDIC-based trigonometric and exponential routines, audio crossover optimization, and Q-format arithmetic for embedded DSP targets.
MLIR Pass Development
Draft implementation of an optional f64 math.round expansion pass in MLIR, including shape-preserving bit computation, safe shift masking, and integration with the existing math-expand-ops filter.
C and C++ Systems Programming
Implementation of low-level math library routines in C and C++, including templated floating-point utilities, ABI-compatible wrappers, and portable integer bit manipulation for cross-platform compiler targets.
FreeBSD libc Contributions
Open pull request for FreeBSD replacing floor-based rounding with integer add/mask rounding and adding C23 roundeven, roundevenf, and roundevenl functions with comprehensive fenv and tie-to-even test coverage.
Mesa Graphics Driver Work
Portfolio record of separate descriptor and sampler dirty-state tracking for Intel ANV in Mesa, reducing redundant surface and sampler table emission through per-layout usage masks and dirty bits.
MATLAB Analysis and Benchmarking
Use of MATLAB for analyzing SOF fixed-point math outputs, computing max absolute errors, and visualizing results from C-generated CSV data alongside host libm reference values.
Performance Analysis and Benchmark Methodology
Structured approach to compiler performance evaluation including paired PerfTest runs, MPFR exhaustive correctness validation, baseline/candidate alternation, and transparent disclosure of measurement conditions and limitations.
Contributions to LLVM libc including merged pull requests for floating-point rounding, exponential function dispatch optimization, and AArch64 strict SVE exception preservation. Work spans libc math functions, backend metadata, and MLIR expansion passes.
Floating-Point Mathematics and Numerical Proofs
Deep expertise in floating-point representation, rounding modes, subnormal handling, and integer add/mask rounding algorithms. Formal derivations covering binary32, binary64, and binary80 encodings with correctness proofs for boundary and halfway cases.
DSP and Fixed-Point Math
Contributions to Sound Open Firmware including fixed-point math functions, HiFi SIMD saturation intrinsics, CORDIC-based trigonometric and exponential routines, audio crossover optimization, and Q-format arithmetic for embedded DSP targets.
MLIR Pass Development
Draft implementation of an optional f64 math.round expansion pass in MLIR, including shape-preserving bit computation, safe shift masking, and integration with the existing math-expand-ops filter.
C and C++ Systems Programming
Implementation of low-level math library routines in C and C++, including templated floating-point utilities, ABI-compatible wrappers, and portable integer bit manipulation for cross-platform compiler targets.
FreeBSD libc Contributions
Open pull request for FreeBSD replacing floor-based rounding with integer add/mask rounding and adding C23 roundeven, roundevenf, and roundevenl functions with comprehensive fenv and tie-to-even test coverage.
Mesa Graphics Driver Work
Portfolio record of separate descriptor and sampler dirty-state tracking for Intel ANV in Mesa, reducing redundant surface and sampler table emission through per-layout usage masks and dirty bits.
MATLAB Analysis and Benchmarking
Use of MATLAB for analyzing SOF fixed-point math outputs, computing max absolute errors, and visualizing results from C-generated CSV data alongside host libm reference values.
Performance Analysis and Benchmark Methodology
Structured approach to compiler performance evaluation including paired PerfTest runs, MPFR exhaustive correctness validation, baseline/candidate alternation, and transparent disclosure of measurement conditions and limitations.
Project history
Open PR #223718 for exact subnormal conversion in log2f normalization, replacing floating-point scaling with integer conversion and adjusting exponent bookkeeping. Historical approval by Tue Ly predates the current head.
Open PR #223719 adding a narrowly scoped subnormal-base underflow shortcut in powf_utils.h after upstream special-input, domain and parity handling, with provable underflow predicate and smoke tests.
Open PR #230112 addressing compiler semantics for AArch64 strict SVE floating-point exception preservation. Adds IsStrictFP=true to target SDNode definitions and mayRaiseFPException=1 to SVE FP unary undef-passthrough pseudos.