gcc/testsuite/gcc.target/i386/pr78904-5.c

   1 /* PR target/78904 */
   2 /* { dg-do assemble { target { ! ia32 } } } */
   3 /* { dg-options "-O2" } */
   4
   5 typedef __SIZE_TYPE__ size_t;
   6
   7 struct S1
   8 {
   9   unsigned char pad1;
  10   unsigned char val;
  11   unsigned short pad2;
  12 };
  13
  14 extern unsigned char t[256];
  15
  16 void foo (struct S1 a, size_t i)
  17 {
  18   register size_t _i __asm ("r10") = i;
  19
  20   asm volatile ("" : "+r" (_i));
  21   t[_i] = a.val;
  22 }