https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81455
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Known to work| |8.0 Summary|[7/8 Regression] |[7 Regression] Compile-time |Compile-time hog w/ -O1 |hog w/ -O1 -funswitch-loops |-funswitch-loops | --- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> --- Author: rguenth Date: Tue Jul 25 13:24:51 2017 New Revision: 250518 URL: https://gcc.gnu.org/viewcvs?rev=250518&root=gcc&view=rev Log: 2017-07-25 Richard Biener <rguent...@suse.de> PR tree-optimization/81455 * tree-ssa-loop-unswitch.c (find_loop_guard): Make sure to not walk in cycles when looking for guards. * gcc.dg/pr81455.c: New testcase. Added: trunk/gcc/testsuite/gcc.dg/pr81455.c Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-ssa-loop-unswitch.c