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[Bug tree-optimization/20256] Perfect nest transformation not conservative enough
- From: "pinskia at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 10 Jun 2005 21:18:22 -0000
- Subject: [Bug tree-optimization/20256] Perfect nest transformation not conservative enough
- References: <20050301012709.20256.fjahanian@apple.com>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From pinskia at gcc dot gnu dot org 2005-06-10 21:18 -------
On the mainline we get a different ICE:
t.c: In function 'do_mid_forward':
t.c:5: internal compiler error: tree check: expected integer_cst, have scev_not_known in int_cst_value, at
tree.c:6342
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
Comes from:
2186 step = evolution_part_in_loop_num (access_fn, loop->num);
2187 if ((step && int_cst_value (step) == xstep)
2188 || USE_FROM_PTR (use_p) == x)
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20256