df-core.c (df_bb_regno_last_use_find): Do not look for dataflow information…

df-core.c (df_bb_regno_last_use_find): Do not look for dataflow information attached to non-INSNs such as NOTEs.

	* df-core.c (df_bb_regno_last_use_find): Do not look for dataflow
	information attached to non-INSNs such as NOTEs.
	(df_bb_regno_first_def_find, df_bb_regno_last_def_find): Likewise.

From-SVN: r113748

gcc/ChangeLog

+2006-05-13  Steven Bosscher  <stevenb.gcc@gmail.com>
+
+	* df-core.c (df_bb_regno_last_use_find): Do not look for dataflow
+	information attached to non-INSNs such as NOTEs.
+	(df_bb_regno_first_def_find, df_bb_regno_last_def_find): Likewise.
+
 2006-05-12  Andreas Krebbel  <krebbel1@de.ibm.com>
 
 	* config/s390/s390.c (s390_const_ok_for_constraint_p): Disallow -4G for

gcc/df-core.c

@@ -915,10 +915,14 @@ df_bb_regno_last_use_find (struct df *df, basic_block bb, unsigned int regno)
 {
   rtx insn;
   struct df_ref *use;
+  unsigned int uid;
 
   FOR_BB_INSNS_REVERSE (bb, insn)
     {
-      unsigned int uid = INSN_UID (insn);
+      if (!INSN_P (insn))
+	continue;
+
+      uid = INSN_UID (insn);
       for (use = DF_INSN_UID_GET (df, uid)->uses; use; use = use->next_ref)
 	if (DF_REF_REGNO (use) == regno)
 	  return use;
@@ -934,10 +938,14 @@ df_bb_regno_first_def_find (struct df *df, basic_block bb, unsigned int regno)
 {
   rtx insn;
   struct df_ref *def;
+  unsigned int uid;
 
   FOR_BB_INSNS (bb, insn)
     {
-      unsigned int uid = INSN_UID (insn);
+      if (!INSN_P (insn))
+	continue;
+
+      uid = INSN_UID (insn);
       for (def = DF_INSN_UID_GET (df, uid)->defs; def; def = def->next_ref)
 	if (DF_REF_REGNO (def) == regno)
 	  return def;
@@ -953,11 +961,14 @@ df_bb_regno_last_def_find (struct df *df, basic_block bb, unsigned int regno)
 {
   rtx insn;
   struct df_ref *def;
+  unsigned int uid;
 
   FOR_BB_INSNS_REVERSE (bb, insn)
     {
-      unsigned int uid = INSN_UID (insn);
+      if (!INSN_P (insn))
+	continue;
 
+      uid = INSN_UID (insn);
       for (def = DF_INSN_UID_GET (df, uid)->defs; def; def = def->next_ref)
 	if (DF_REF_REGNO (def) == regno)
 	  return def;