[Bug tree-optimization/71506] [5 Regression] ICE with libvpx with -floop-interchange: isl_constraint.c:627: expecting integer value
vries at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Thu Aug 25 09:43:00 GMT 2016
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71506
--- Comment #6 from Tom de Vries <vries at gcc dot gnu.org> ---
Hmm, at r225942 I read:
...
[graphite] fix pr61929
This fixes bootstrap of GCC with BOOT_CFLAGS="-g -O2 -fgraphite-identity
-floop-nest-optimize -floop-block -floop-interchange -floop-strip-mine". It
passes regstrap on amd64-linux. A previous change
(https://gcc.gnu.org/viewcvs/gcc?view=revision&revision=213816), replaced
isl_int with isl_val because isl_int would be deprecated. Since isl_val has
stricter checks, it exposed the bug. In the test case (isl_set_max_val) would
return infinity which would remain unchecked. We now check if the value
returned is an integer or not, and bail out if it isn't.
...
This seems to be a duplicate of PR61929.[ If we mark this as a duplicate, we
should re-open PR61929 and mark it as 5 regression. ]
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