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[Bug rtl-optimization/70263] [4.9/5/6 Regression] ICE at -O1 and above in both 32-bit and 64-bit modes on x86_64-linux-gnu (segmentation fault)
- From: "law at redhat dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 18 Mar 2016 16:43:16 +0000
- Subject: [Bug rtl-optimization/70263] [4.9/5/6 Regression] ICE at -O1 and above in both 32-bit and 64-bit modes on x86_64-linux-gnu (segmentation fault)
- Auto-submitted: auto-generated
- References: <bug-70263-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70263
--- Comment #7 from Jeffrey A. Law <law at redhat dot com> ---
In all the cases where we can have the store before the equiv we're in the
realm of undefined behavior AFAICT. But it's not clear to me that the equiv
will always be a self-referencing.
So your patch will almost certainly fix this instance, but I'm not sure it'll
fix it in the more general case.