This fixes an oversight that led to a compare-debug failure in the
testsuite with the other changes applied. We really don't care if a
DEBUG_INSN uses the iteration register or not.
Will commit soon as obvious.
Bernd
* hw-doloop.c (scan_loop): Compute register usage only for non-debug
insns.
Index: hw-doloop.c
===================================================================
--- hw-doloop.c (revision 178779)
+++ hw-doloop.c (working copy)
@@ -123,7 +123,7 @@ scan_loop (hwloop_info loop)
df_ref *def_rec;
HARD_REG_SET set_this_insn;
- if (!INSN_P (insn))
+ if (!NONDEBUG_INSN_P (insn))
continue;
if (recog_memoized (insn) < 0
