Re: Reducing JUMPs and using conditional exec based on if_then_else

[Sami Khawam <S dot Khawam at ee dot ed dot ac dot uk>]

Thanks a lot Hans-Peter for the info; indeed the 
documentation explains it quite well, however it 
does not explain well how to deal with the expansion 
on CPU that dont have a cc0.

Anyway, tried it with movsicc (without splitting it) 
and it works. However, there is a small problem.

The code is able to convert something like
        t1 = a+b;
        t2 = 8 - b;

        if (a <= 5)
            i = t1 ;
        else
            i = t2;

to make it use the movsicc insn, but if it is 
written as:
        if (a <= 5)
            i = a + b;
        else
            i = 8 - b;

the compiler does not recognise the optimisation and 
keeps using a jump, even though I set the 
BRANCH_COST to 999 and REGISTER_MOVE_COST to 0.

Am I missing something that would enable this 
optimisation?

Many thanks,

Sami Khawam