[LLVMdev] getTripCount and pointers

[Anthony Danalis]

Hello,

I'm having some trouble with getTripCount() ... again.  In particular  
it fails in the first of the following two examples, although it works  
for the second.  By fails, I mean it returns NULL.

---------- example 1 ----------
test1(int *a, const int *ip) {
   int k;

   for (k = 0; k < ip[2]; ++k) {
         a[k] = (k+11)/(k+2);
   }
}

---------- example 2 ----------
test2(int *a) {
   int k, ip[4];

   vbar(ip, 4, 7);

   for (k = 0; k < ip[2]; ++k) {
         a[k] = (k+11)/(k+2);
   }
}


However, in both cases the trip count is the same and equally  
undecidable, since "vbar()" is an external function.

Note that in each example that is the only code in the file and I am  
running my pass as:
opt -O1 -licm -load ... -mypass < test.bc > /dev/null

Any suggestions?

thanks,
Anthony