C-Vise is a tool that takes a large C, C++ or OpenCL program that has a property of interest (such as triggering a compiler bug) and automatically produces a much smaller C/C++ or OpenCL program that has the same property. It is intended for use by people who discover and report bugs in compilers and other tools that process C/C++ or OpenCL code.

NOTE: C-Vise happens to do a pretty good job reducing the size of programs in languages other than C/C++, such as JavaScript and Rust. If you need to reduce programs in some other language, please give it a try.