gcc/testsuite/gcc.dg/torture/pr94482.c

   1 /* { dg-do run } */
   2 /* { dg-additional-options "-Wno-psabi -w" } */
   3 /* { dg-additional-options "-msse2" { target sse2_runtime } } */
   4
   5 typedef unsigned V __attribute__ ((__vector_size__ (16)));
   6 union U
   7 {
   8   V j;
   9   unsigned long long i __attribute__ ((__vector_size__ (16)));
  10 };
  11
  12 static inline __attribute__((always_inline)) V
  13 foo (unsigned long long a)
  14 {
  15   union U z = { .j = (V) {} };
  16   for (unsigned long i = 0; i < 1; i++)
  17     z.i[i] = a;
  18   return z.j;
  19 }
  20
  21 static inline __attribute__((always_inline)) V
  22 bar (V a, unsigned long long i, int q)
  23 {
  24   union U z = { .j = a };
  25   z.i[q] = i;
  26   return z.j;
  27 }
  28
  29 int
  30 main ()
  31 {
  32   union U z = { .j = bar (foo (1729), 2, 1) };
  33   if (z.i[0] != 1729)
  34     __builtin_abort ();
  35   return 0;
  36 }