1 /* { dg-do compile } */
2 /* { dg-options "-O2" } */
3 /* { dg-final { scan-assembler-not "ldwio" } } */
4 /* { dg-final { scan-assembler-not "stwio" } } */
5 
6 /* Make sure the default behavior is not to generate I/O variants of
7    the load and stores to foo.  */
8 
9 extern volatile int foo;
10 
11 int
read_foo(void)12 read_foo (void)
13 {
14   return foo;
15 }
16 
17 void
write_foo(int x)18 write_foo (int x)
19 {
20   foo = x;
21 }
22