TPDE Compiler Back-End Framework

TPDE is a fast compiler back-end framework that adapts to existing SSA IRs. The primary goal is low-latency compilation while maintaining reasonable (-O0) code quality, e.g., as baseline compiler for JIT compilation or unoptimized builds. Currently, TPDE only targets ELF-based x86-64 and AArch64 (Armv8.1) platforms.

This repository contains:

• TPDE: the core compiler framework.
• TPDE-Encodegen: a utility for easing the use of TPDE by deriving code generators through LLVM's Machine IR.
• TPDE-LLVM: a standalone back-end for LLVM-IR, which compiles 10--20x faster than LLVM -O0 with similar code quality, usable as library (e.g., for JIT), as tool (tpde-llc), and integrated in Clang/Flang (with a patch).

For more information and getting started, consult the documentation.

Publications

• Tobias Schwarz, Tobias Kamm, and Alexis Engelke. TPDE: A Fast Adaptable Compiler Back-End Framework. arXiv:2505.22610 [cs.PL]. 2025.

License

Generally: Apache-2.0 WITH LLVM-exception. (Detailed license information is attached to every file. Dependencies may have different licenses.)