[Bug target/70941] [5/6/7 Regression] Test miscompiled with -O2.

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70941

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
4.9 has

  (void) (a = (char) ((-(unsigned char) b - (unsigned char) ((signed char)
((signed char) d != 0 && (signed char) c != 0) ^ -128)) + 19)) >>>>>;
if ((signed char) a != -109)