1/* { dg-do compile } */
2/* { dg-options "-O1 -fdump-tree-dom2" } */
3
4
5typedef struct rs6000_stack {
6  int first_gp_reg_save;
7} rs6000_stack_t;
8extern char regs_ever_live[113];
9extern rs6000_stack_t *rs6000_stack_info (void);
10extern void gen_rtx_REG (int);
11void
12rs6000_emit_prologue (int i, rs6000_stack_t *info)
13{
14  if (regs_ever_live[info->first_gp_reg_save + i] || i+info->first_gp_reg_save)
15    gen_rtx_REG (info->first_gp_reg_save + i);
16}
17
18/* There should be precisely one load of first_gp_reg_save.  If there is
19   more than one, then the dominator optimizations failed.  */
20/* { dg-final { scan-tree-dump-times "first_gp_reg_save" 1 "dom2"} } */
21
22/* There should be precisely one addition.  If there is more than one, then
23   the dominator optimizations failed, most likely due to not handling
24   commutative operands correctly.  */
25/* { dg-final { scan-tree-dump-times "\\+" 1 "dom2"} } */
26
27/* { dg-final { cleanup-tree-dump "dom2" } } */
28
29