On 14 October 2015 at 05:50, Mohamed Boussaa wrote: > I would like to define a set of 10 optimization options to an input C program. > example: gcc -fauto-inc-dec -fbranch-count-reg > -fcombine-stack-adjustments ... test.c -o out.o > Does the order of these options affect the effectiveness of the produced code? No. The only time the order of options makes a difference is for options that cancel or override each other, in which case the last such options wins. For example, given -ffoo -fno-foo the order matters, and given -march=i586 -march=i686 the order matters.
