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[Bug tree-optimization/49937] [4.7 Regression] g++.dg/tree-ssa/fwprop-align.C
- From: "rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 10 Aug 2011 08:53:09 +0000
- Subject: [Bug tree-optimization/49937] [4.7 Regression] g++.dg/tree-ssa/fwprop-align.C
- Auto-submitted: auto-generated
- References: <bug-49937-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49937
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
--- Comment #9 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-08-10 08:53:09 UTC ---
(In reply to comment #7)
> (In reply to comment #4)
> > Created attachment 24959 [details]
> > patch
> >
> > Patch I'm testing.
>
> Me too: fixes the bug with no regressions for cris-elf at r177605. Thanks.
> What do you think if anything, should be done for BIGGEST_ALIGNMENT usage?
> Ok, let's take it to the list.
I _think_ now that get_{pointer,object}_alignment is returning a conservative
result (thus, 8 for any pointer that hasn't alignment meta information
attached) limiting the result is pointless - certainly limiting it to
BIGGEST_ALIGNMENT.
Thus I'd propose to get rid of that argument to those functions. On that
course see if any caller cannot deal with an alignment bigger than
BIGGEST_ALIGNMENT (which would be odd).
Well, this one is fixed at least.