Home/ Questions/Q 7704559
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-31T23:42:28+00:00

I’m developing a controller program used to run a humanoid kidsize robot. The OS

  • 0

I’m developing a controller program used to run a humanoid kidsize robot. The OS is debian 6 and whole programs are written in C++11. CPU is a 1GHz VorteX86 SD and its architecture is Intel i486.

I need to compile my code with maximum possible optimization. currently I’m using gcc with 3rd level optimization flag and i486 optimization tunning:

g++ -std=c++0x -O3 -march=i486 -mtunes=i486

I’m wondering if its possible to gain more optimized code or not. I searched around about optimization flags and compiler benchmarks, but didn’t find any…

My question is which compiler for C++ is generates faster code? Specially for i486 architecture.

Current candidates are: ICC XE, GCC 4.6, EkoPath

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    See the documentation. There are too many permutations to test them all; maybe give Acovea a try, which tests for the best one with a genetic approach.

    If you have many floating points optimizations, you may try -ffast-math or -Ofast, which includes -ffast-math. However, you lose IEEE floating math compliance.

    • 0