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