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Re: Recent IPA regression with internal functions

On Sun, Sep 15, 2013 at 09:08:00PM +0200, Jan Hubicka wrote:
> > 2013-09-13  Jakub Jelinek  <>
> > 
> > 	* ipa-prop.c (ipa_compute_jump_functions_for_edge): Return early
> > 	for internal calls.
> That seems resonable.  I wonder if we want to consider internal calls to form
> callgarph edges at all: perhaps we can just modify cgraph builder+verifier
> to skip them and consider them to be normal instruction....

I'd wonder how many spots would need to be changed for that though, to check
for is_gimple_call && !gimple_call_internal_p instead of just
is_gimple_call.  In cgraph*, inliner, sra, IPA, whatever else assumes that a
GIMPLE_CALL should have a cgraph_edge associated with it.
The internal functions for the time being should be pretty rare,
right now they are used just for some ARM vectorization stuff (during/after
vectorizations only, so no IPA) and newly for the OpenMP/Cilk+ SIMD loops,
so if it is just about avoiding memory waste because of them, I think it
isn't a big deal.


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