When Compilers Surprise You
4 months ago
- #programming
- #compiler-optimizations
- #performance
- Compiler optimizations can transform an O(n) loop into an O(1) closed-form solution.
- GCC optimizes loops by summing two numbers at a time using clever arithmetic.
- Clang eliminates loops entirely by using mathematical transformations to compute sums.
- The article highlights the surprising and delightful optimizations compilers can perform.
- The author shares insights from over twenty years of working with compilers.