cfgcleanup.c (flow_find_head_matching_sequence): Terminate when reaching the end…

cfgcleanup.c (flow_find_head_matching_sequence): Terminate when reaching the end of a block if it occurs at a DEBUG_INSN.

	* cfgcleanup.c (flow_find_head_matching_sequence): Terminate when
	reaching the end of a block if it occurs at a DEBUG_INSN.

From-SVN: r164589

gcc/ChangeLog

+2010-09-24  Bernd Schmidt  <bernds@codesourcery.com>
+
+	* cfgcleanup.c (flow_find_head_matching_sequence): Terminate when
+	reaching the end of a block if it occurs at a DEBUG_INSN.
+
 2010-09-09  Tristan Gingold  <gingold@adacore.com>
 
 	PR target/44242

gcc/cfgcleanup.c

@@ -1184,7 +1184,6 @@ flow_find_head_matching_sequence (basic_block bb1, basic_block bb2, rtx *f1,
 
   while (true)
     {
-
       /* Ignore notes.  */
       while (!NONDEBUG_INSN_P (i1) && i1 != BB_END (bb1))
 	i1 = NEXT_INSN (i1);
@@ -1192,6 +1191,10 @@ flow_find_head_matching_sequence (basic_block bb1, basic_block bb2, rtx *f1,
       while (!NONDEBUG_INSN_P (i2) && i2 != BB_END (bb2))
 	i2 = NEXT_INSN (i2);
 
+      if ((i1 == BB_END (bb1) && !NONDEBUG_INSN_P (i1))
+	  || (i2 == BB_END (bb2) && !NONDEBUG_INSN_P (i2)))
+	break;
+
       if (NOTE_P (i1) || NOTE_P (i2)
 	  || JUMP_P (i1) || JUMP_P (i2))
 	break;