https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110311
--- Comment #46 from Jürgen Reuter <juergen.reuter at desy dot de> --- (In reply to Jürgen Reuter from comment #45) > Created attachment 55492 [details] > Smaller stand-alone reproducer > > I will give more information in a comment, this contains 3 files and a > Makefile. This is a standalone reproducer with a total of 8k lines. It needs to be in three different files, as fusing the 2nd and 3rd file eliminates the optimizer problem of this issue, while fusing the 1st and the 2nd leeds to an ICE in trans-array.c (reported separately) and is independent of this problem here. The issue goes away with -O0, with -O1 and with -O2 -fno-tree-vectorize. I might want to find the offending commit in the week of June 12-19 in the tree-optimizer, but I don't know whether I have time to do so. Hopefully, with this smaller reproducer you can figure out what happens (and help solving it)
