This is the mail archive of the
gcc-bugs@gcc.gnu.org
mailing list for the GCC project.
[Bug rtl-optimization/56117] [4.8 Regression] ICE: in cselib_subst_to_values, at cselib.c:1853 with -O2 -fsched2-use-superblocks and __builtin_prefetch()
- From: "jakub at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 28 Jan 2013 08:51:39 +0000
- Subject: [Bug rtl-optimization/56117] [4.8 Regression] ICE: in cselib_subst_to_values, at cselib.c:1853 with -O2 -fsched2-use-superblocks and __builtin_prefetch()
- Auto-submitted: auto-generated
- References: <bug-56117-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56117
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> 2013-01-28 08:51:39 UTC ---
Created attachment 29289
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=29289
gcc48-pr56117.patch
Untested fix. For MEMs, sched-deps.c is calling cselib_lookup_from_insn, but
for PREFETCH it wasn't doing that. As this is before cselib_process_insn is
called, some REGs mentioned in the pattern might be never looked up yet at that
point.