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[Bug c/54945] Too strong non-aliasing analysis?
- From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 17 Oct 2012 16:11:08 +0000
- Subject: [Bug c/54945] Too strong non-aliasing analysis?
- Auto-submitted: auto-generated
- References: <bug-54945-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54945
--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> 2012-10-17 16:11:08 UTC ---
In .ccp1 we have:
i_6 = (intptr_t) &MEM[(void *)&x + 4B];
j_7 = (intptr_t) &y;
_8 = i_6 == j_7;
_9 = (int) _8;
but in .forwprop1:
_8 = 0;
_9 = (int) _8;