https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104209
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Here is the testcase: int a, b, c, d, e, f, g, h, i, j, k, l; void f1 (void) { __asm__ volatile ("" : [a] "+r" (a), [b] "+r" (b), [c] "+r" (c), [d] "+r" (d), [e] "+r" (e), [f] "+r" (f), [g] "+r" (g), [h] "+r" (h), [i] "+r" (i), [j] "+r" (j), [k] "+r" (k), [l] "+r" (l)); }