gcc/testsuite/gcc.dg/vect/bb-slp-pr95271.c

   1 /* { dg-do compile } */
   2 /* { dg-require-effective-target stdint_types } */
   3 /* { dg-additional-options "-march=cooperlake" { target x86_64-*-* i?86-*-* } } */
   4
   5 #include <stdint.h>
   6
   7 int a;
   8 struct b c;
   9 int64_t d;
  10 struct b {
  11   uint64_t address;
  12   uint64_t e;
  13 };
  14 void f()
  15 {
  16   d = (int64_t)(&a)[0] << 56 | (int64_t)((unsigned char *)&a)[1] << 48 |
  17       (int64_t)((unsigned char *)&a)[2] << 40 |
  18       (int64_t)((unsigned char *)&a)[3] << 32 |
  19       (int64_t)((unsigned char *)&a)[4] << 24 | ((unsigned char *)&a)[5] << 16 |
  20       ((unsigned char *)&a)[6] << 8 | ((unsigned char *)&a)[7];
  21   c.address = c.e = d;
  22 }