gcc/testsuite/gcc.dg/pr48335-2.c

   1 /* PR middle-end/48335 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O2 -fno-tree-sra" } */
   4
   5 typedef long long T __attribute__((may_alias, aligned (1)));
   6 typedef short U __attribute__((may_alias, aligned (1)));
   7
   8 struct S
   9 {
  10   _Complex float d __attribute__((aligned (8)));
  11 };
  12
  13 void bar (struct S);
  14
  15 void
  16 f1 (T x)
  17 {
  18   struct S s;
  19   *(T *) ((char *) &s.d + 1) = x;
  20   __real__ s.d *= 7.0;
  21   bar (s);
  22 }
  23
  24 void
  25 f2 (int x)
  26 {
  27   struct S s = { .d = 0.0f };
  28   ((U *)((char *) &s.d + 1))[0] = x;
  29   __real__ s.d *= 7.0;
  30   bar (s);
  31 }
  32
  33 void
  34 f3 (int x)
  35 {
  36   struct S s = { .d = 0.0f };
  37   ((U *)((char *) &s.d + 1))[1] = x;
  38   __real__ s.d *= 7.0;
  39   bar (s);
  40 }
  41
  42 void
  43 f4 (int x)
  44 {
  45   struct S s = { .d = 0.0f };
  46   ((U *)((char *) &s.d + 1))[2] = x;
  47   __real__ s.d *= 7.0;
  48   bar (s);
  49 }
  50
  51 void
  52 f5 (int x)
  53 {
  54   struct S s = { .d = 0.0f };
  55   ((U *)((char *) &s.d + 1))[3] = x;
  56   __real__ s.d *= 7.0;
  57   bar (s);
  58 }