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-rw-r--r--gcc/loop.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/gcc/loop.c b/gcc/loop.c
index ea4a027..4903cec 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);