https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115528
--- Comment #15 from Jürgen Reuter <juergen.reuter at desy dot de> --- I fund the culprit commit in the gcc master, it is: https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=1fe55a1794863b5ad9eeca5062782834716016b2 by Richard Biener on the tree-optimization. Now I will try helping to get a smaller reproducer.
