| /* { dg-do compile } */ |
| /* { dg-options "-fgnu-tm -O -fdump-tree-tmmark" } */ |
| |
| extern int something(void) __attribute__((transaction_safe)); |
| extern void *malloc (__SIZE_TYPE__) __attribute__((malloc,transaction_safe)); |
| extern void foo (int); |
| |
| int f() |
| { |
| int *p; |
| |
| p = malloc (sizeof (*p) * 100); |
| foo(p[5]); |
| |
| __transaction_atomic { |
| /* p[5] is thread private, however the SSA_NAME that holds the |
| address dominates the entire transaction (transaction |
| invariant) so we can use a save/restore pair. */ |
| p[5] = 123; |
| |
| if (something()) |
| __transaction_cancel; |
| } |
| return p[5]; |
| } |
| |
| /* { dg-final { scan-tree-dump-times "ITM_LU" 0 "tmmark" } } */ |
| /* { dg-final { scan-tree-dump-times "ITM_WU" 0 "tmmark" } } */ |
| /* { dg-final { scan-tree-dump-times "int tm_save" 1 "tmmark" } } */ |
