1 /* { dg-do compile } */
2 /* { dg-options "-O1 -fdump-tree-dom2" } */
3 
4 
5 typedef struct rs6000_stack {
6   int first_gp_reg_save;
7 } rs6000_stack_t;
8 extern char regs_ever_live[113];
9 extern rs6000_stack_t *rs6000_stack_info (void);
10 extern void gen_rtx_REG (int);
11 void
rs6000_emit_prologue(int i,rs6000_stack_t * info)12 rs6000_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 
28