| /* { dg-do compile } */ |
| /* { dg-skip-if "" { ! { i?86-*-* x86_64-*-* } } } */ |
| /* { dg-options "-O2 -fdump-tree-optimized" } */ |
| |
| struct thread_info { int preempt_count; }; |
| static inline struct thread_info *current_thread_info(void) |
| { |
| register struct thread_info *sp asm("esp"); |
| return sp; |
| } |
| void testcase(void) |
| { |
| current_thread_info()->preempt_count += 1; |
| } |
| |
| /* We have to make sure that alias analysis treats sp as pointing |
| to globals and thus the store not optimized away. */ |
| |
| /* { dg-final { scan-tree-dump "->preempt_count =" "optimized" } } */ |
