[Bug tree-optimization/42326] [4.5 Regression][graphite] segfault in tree-data-ref.c with Graphite building 200.sixtrack

[spop 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.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42326