1 /* { dg-do run  { target powerpc*-*-* i?86-*-* x86_64-*-* } } */
2 /* { dg-options "-O1" } */
3 /* Test to make sure that inline-asm causes the tree optimizers to get the
4    V_MAY_DEFs and clobber memory.  */
5 /* Test from Jakub Jelinek, modified by Andrew Pinski to work on all powerpc targets.  */
6 extern void abort (void);
7 
8 unsigned short v = 0x0300;
9 
10 void
foo(unsigned short * p)11 foo (unsigned short *p)
12 {
13   *p = v;
14 }
15 
16 int
bar(void)17 bar (void)
18 {
19   unsigned short x;
20   volatile unsigned short *z;
21   foo (&x);
22   const unsigned int y = x;
23   z = &x;
24 #if defined (__powerpc__) || defined (__PPC__) || defined (__ppc__) || defined (_POWER) || defined (__ppc64__) || defined (__ppc)
25   __asm __volatile ("sthbrx %1,0,%2" : "=m" (*z) : "r" (y), "r" (z));
26 #elif defined __i386__ || defined __x86_64__
27   __asm __volatile ("movb %b1,1(%2)\n\tmovb %h1,(%2)"
28 		    : "=m" (*z) : "Q" (y), "R" (z));
29 #endif
30   return (x & 1) == 0;
31 }
32 
33 int
main(void)34 main (void)
35 {
36   if (bar ())
37     abort ();
38   return 0;
39 }
40