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[Bug other/42530] ICE in verify_ssa when using -O -g -ffast-math -floop-parallelize-all
- From: "aoliva at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 7 Jan 2010 12:47:36 -0000
- Subject: [Bug other/42530] ICE in verify_ssa when using -O -g -ffast-math -floop-parallelize-all
- References: <bug-42530-8090@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #2 from aoliva at gcc dot gnu dot org 2010-01-07 12:47 -------
'been looking at it a bit. It's graphite's
rewrite_commutative_reductions_out_of_ssa that removes SSA PHI nodes from the
IR without actually releasing them, so we don't get a chance to propagate the
DEFs into debug stmts. I tried to explicitly call the debug stmt propagate
function, before and after release, to no avail. I went no further than that,
for the time being, and I'm not sure when/if I'll get back to it.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42530