[Bug tree-optimization/78574] [7 Regression] ice on valid C code at -O2 and -O3 in both 32- and 64-bit modes on x86_64-linux-gnu (internal compiler error: Segmentation fault (program cc1))

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78574 Markus Trippelsdorf changed: What|Removed |Added Status|NEW |RESOLVED CC|

[Bug tree-optimization/78574] [7 Regression] ice on valid C code at -O2 and -O3 in both 32- and 64-bit modes on x86_64-linux-gnu (internal compiler error: Segmentation fault (program cc1))

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78574 --- Comment #6 from amker at gcc dot gnu.org --- Author: amker Date: Wed Nov 30 14:41:09 2016 New Revision: 243026 URL: https://gcc.gnu.org/viewcvs?rev=243026=gcc=rev Log: PR tree-optimization/78574 * tree-ssa-loop-ivopts.c

[Bug tree-optimization/78574] [7 Regression] ice on valid C code at -O2 and -O3 in both 32- and 64-bit modes on x86_64-linux-gnu (internal compiler error: Segmentation fault (program cc1))

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78574 --- Comment #5 from amker at gcc dot gnu.org --- Well, it is iv (maybe biv) in this case: _24 = j_11 + 1; is in irreducible sub-loop, but _24 is a loop invariant wrto the sub-loop. But we don't have such information in GCC. Thus mark_bivs

[Bug tree-optimization/78574] [7 Regression] ice on valid C code at -O2 and -O3 in both 32- and 64-bit modes on x86_64-linux-gnu (internal compiler error: Segmentation fault (program cc1))

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78574 --- Comment #4 from amker at gcc dot gnu.org --- (In reply to Jakub Jelinek from comment #2) > Seems there is infinite recursion in find_deriving_biv_for_expr. > It endlessly alternates being called on lhs of > j_11 = PHI >

[Bug tree-optimization/78574] [7 Regression] ice on valid C code at -O2 and -O3 in both 32- and 64-bit modes on x86_64-linux-gnu (internal compiler error: Segmentation fault (program cc1))

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78574 Richard Biener changed: What|Removed |Added Component|c |tree-optimization Target