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| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/loop.c | 8 |
2 files changed, 13 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 5c7d740f5a3..3343f37ca07 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2000-08-02 Jakub Jelinek <jakub@redhat.com> + + * loop.c (scan_loop): Ensure update_end label does not + go away until reg_scan_update is run. + 2000-08-02 Zack Weinberg <zack@wolery.cumb.org> * c-common.h: Prototype min_precision and c_build_qualified_type here... diff --git a/gcc/loop.c b/gcc/loop.c index ea4a0271762..4903cec0e2d 100644 --- a/gcc/loop.c +++ b/gcc/loop.c @@ -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); |