gcc optimisation problem

[vikramsp]

no i am not using any -O options. using only individual options
but many of them are not woking. I have applied all the indivisual 
-f* switches on the entire gcc torture testsuite. Interestingly i 
found that only around 15 switches are giving some impact. Is
there any testsuite which can be used to check each and
every -f* switch. 

vikramsp wrote:
> 
> hello there... i am trying my hands on gcc optimisations options.
> i tried e.g. -finline-functions, -funroll-loops and the likes but none
> worked for me
> for ex. i tried -funroll-loops for code
> for (int i = 0; i < 3; ++i)
>   a[i] = i;
> 
> which should unroll like
> a[0] = 0
> a[1] = 1
> a[2] = 2
> but it didn't seem to happen.
> please help me write good test case or suggest some. i am using gcc
> 4.1.2. tried 5.4.2 also on rhel5
> 
> Best Regards
> 

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