http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46177
--- Comment #6 from Zdenek Sojka <zsojka at seznam dot cz> 2010-11-05 21:37:28 UTC --- Created attachment 22298 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22298 another testcase Thank you for having a look at this issue! The original testcase testsuite/gcc.dg/tree-ssa/pr38385.c is still failing, attached is another testcase that fails in r166306. Should I open separate PR for this? Thanks! $ gcc -O -fno-tree-copy-prop -ftree-loop-distribution pr46177-2.c pr46177-2.c: In function 'foo': pr46177-2.c:4:1: internal compiler error: in prop_phis, at tree-loop-distribution.c:331 Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions.