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[Bug tree-optimization/42326] [4.5 Regression][graphite] segfault in tree-data-ref.c with Graphite building 200.sixtrack
- From: "spop at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 5 Mar 2010 09:39:20 -0000
- Subject: [Bug tree-optimization/42326] [4.5 Regression][graphite] segfault in tree-data-ref.c with Graphite building 200.sixtrack
- References: <bug-42326-4503@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #13 from spop at gcc dot gnu dot org 2010-03-05 09:39 -------
We build these scevs because chrec_fold_multiply and chrec_fold_plus
do not correctly handle conversions: op0 = (integer(kind=4)) {0, +, 1}_4
is considered non variating in any loop, and thus when op0 gets added to
op1 = {0, +, 1}_1, the result is: {(integer(kind=4)) {0, +, 1}_4, +, 1}_1 that
has no defined semantics.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42326