2026 EuroLLVM - Floating-Point Types in MLIR: Infrastructure, New Types and Dialect Design

2026 EuroLLVM Developers' Meeting https://llvm.org/devmtg/2026-04/ ------ Title: Floating-Point Types in MLIR: Infrastructure, New Types and Dialect Design Speaker: Matthias Springer ------ Slides: https://llvm.org/devmtg/2026-04/slide... ----- This technical talk summarizes recent improvements to MLIR's floating-point type infrastructure, focusing on how to represent and lower the rapidly growing zoo of low-precision and block-scaled formats used in modern ML workloads. It introduces the FloatTypeInterface, explains the interaction with LLVM's APFloat and fltSemantics, and shows step-by-step how to add new floating-point types, from extending APFloat to defining lowering rules and dialect design for special FP types across high-level and low-level dialects. The talk also covers the new arith-to-apfloat infrastructure for software emulation of low-precision FP arithmetics on CPUs, discusses current limitations of adding FP types without patching LLVM, and outlines future directions for more extensible, vendor-friendly floating-point type systems in MLIR. ----- Videos Edited by Bash Films: http://www.BashFilms.com