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c++linuxgcclegacy

Benefit of using gcc4 over gcc34?

Is three any performance benefit of using gcc4 over gcc34 ? Currently we are using gcc34 with old c runtime to support all old os. So is there any performance benefit of using gcc4 ?

Solution

  • As per Bench-marking tests run by RedHat for g++ (GCC-3.4.2) & g++ (GCC-4.x) on identical platform and enviornment,

    For Compilation Performance:
    gcc-4 is faster than gcc-3.4, by a significant margin.

    For Executable Performance:
    There is little difference between the two.

    Check the bench-marking comparisons here

    For your code & architecture, you will have to benchmark it to see if the results are similar.