https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98393
--- Comment #9 from David Binderman <dcb314 at hotmail dot com> --- Also from the testsuite, files ./gcc.c-torture/execute/20040709-1.c ./gcc.dg/torture/pr98235.c ./gcc.dg/tree-ssa/loop-34.c with -O3 show the same problem.