/* PR rtl-optimization/49390 */ struct S { unsigned int s1; unsigned int s2; }; struct T { unsigned int t1; struct S t2; }; struct U { unsigned short u1; unsigned short u2; }; struct V { struct U v1; struct T v2; }; struct S a; char *b; union { char b[64]; struct V v; } u; volatile int v; extern void abort (void); __attribute__((noinline, noclone)) void foo (int x, void *y, unsigned int z, unsigned int w) { if (x != 4 || y != (void *) &u.v.v2) abort (); v = z + w; v = 16384; } __attribute__((noinline, noclone)) void bar (struct S x) { v = x.s1; v = x.s2; } __attribute__((noinline, noclone)) int baz (struct S *x) { v = x->s1; v = x->s2; v = 0; return v + 1; } __attribute__((noinline, noclone)) void test (struct S *c) { struct T *d; struct S e = a; unsigned int f, g; if (c == 0) c = &e; else { if (c->s2 % 8192 <= 15 || (8192 - c->s2 % 8192) <= 31) foo (1, 0, c->s1, c->s2); } if (!baz (c)) return; g = (((struct U *) b)->u2 & 2) ? 32 : __builtin_offsetof (struct V, v2); f = c->s2 % 8192; if (f == 0) { e.s2 += g; f = g; } else if (f < g) { foo (2, 0, c->s1, c->s2); return; } if ((((struct U *) b)->u2 & 1) && f == g) { bar (*c); foo (3, 0, c->s1, c->s2); return; } d = (struct T *) (b + c->s2 % 8192); if (d->t2.s1 >= c->s1 && (d->t2.s1 != c->s1 || d->t2.s2 >= c->s2)) foo (4, d, c->s1, c->s2); return; } int main () { struct S *c = 0; asm ("" : "+r" (c) : "r" (&a)); u.v.v2.t2.s1 = 8192; b = u.b; test (c); if (v != 16384) abort (); return 0; }