Hi,

As discussed in https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69708 and 
corresponding mailing list discussion, IPA CP is not detecting  a 
jump-function with the sq function as value.


static int sq(int x) {
   return x * x;
}

static const F f = {sq};
...
dosomething (g(f, x));
...

I added a check at  determine_locally_known_aggregate_parts to detect 
this. This fixes the testcase and passes x86-64-linux-gnu lto bootstrap 
and regression testing with no new regression. Does this look sensible 
place to fix this?

Thanks,
Kugan

gcc/ChangeLog:



2016-03-01  Kugan Vivekanandarajah  <kuganv@linaro.org>



	* ipa-prop.c (determine_locally_known_aggregate_parts): Determine jump

	 function for static constant initialization.