diff options
Diffstat (limited to 'gcc/loop.c')
-rw-r--r-- | gcc/loop.c | 8 |
1 files changed, 8 insertions, 0 deletions
@@ -1131,11 +1131,19 @@ scan_loop (loop, flags) if (flag_strength_reduce) { + if (update_end && GET_CODE (update_end) == CODE_LABEL) + /* Ensure our label doesn't go away. */ + LABEL_NUSES (update_end)++; + the_movables = movables; strength_reduce (loop, insn_count, flags); reg_scan_update (update_start, update_end, loop_max_reg); loop_max_reg = max_reg_num (); + + if (update_end && GET_CODE (update_end) == CODE_LABEL + && --LABEL_NUSES (update_end) == 0) + delete_insn (update_end); } VARRAY_FREE (reg_single_usage); |