Byte Reverse Bench

This is a benchmark comparing different methods of bits reverse in byte in C.

Methods

There are several implemented methods to reverse bits:

• simple loop over all bits
• bitfields and union
• swapping
• small (reduced) lookup table
• big (full) lookup table
• magic with constants
• clang's builtin method

How to Run

Benchmark measures run times of implementations built by GCC and Clang for every optimization level (Os, O0-O3).

To run:

• install GCC, Clang, Make
• run run.sh script