gcc/testsuite/gcc.target/i386/pr64905.c

   1 /* { dg-do compile { target { ! ia32 } } } */
   2 /* { dg-options "-Os -ffixed-rax -ffixed-rbx -ffixed-rcx -ffixed-rdx -ffixed-rdi -ffixed-rsi -ffixed-r8 -ffixed-r9 -ffixed-r10 -ffixed-r11 -ffixed-r12 -ffixed-r13 -ffixed-r14 -ffixed-r15" } */
   3 /* { dg-final { scan-assembler-not "movl\[ \t\]0\\(%.*\\), %.*" } } */
   4
   5 typedef unsigned short uint16_t;
   6 uint16_t a_global;
   7
   8 void __attribute__ ((noinline))
   9 function (uint16_t **a_p)
  10 {
  11   // unaligned access by address in %rbp: mov    0x0(%rbp),%ebp
  12   a_global = **a_p;
  13 }
  14
  15 int main(int argc, char **argv)
  16 {
  17   uint16_t array [4] = { 1, 2, 3, 4 };
  18   uint16_t *array_elem_p = &array [3];
  19
  20   function (&array_elem_p);
  21   return 0;
  22 }