re PR debug/52165 (ICE in add_var_loc_to_decl, at dwarf2out.c:5430 building libgo on s390/s390x)

	PR debug/52165
	* var-tracking.c (emit_note_insn_var_location): If
	EMIT_NOTE_BEFORE_INSN and insn is NOTE_INSN_CALL_ARG_LOCATION,
	emit it before next non-NOTE_INSN_CALL_ARG_LOCATION
	non-NOTE_DURING_CALL_P insn.

From-SVN: r184042

gcc/ChangeLog

+2012-02-09  Jakub Jelinek  <jakub@redhat.com>
+
+	PR debug/52165
+	* var-tracking.c (emit_note_insn_var_location): If
+	EMIT_NOTE_BEFORE_INSN and insn is NOTE_INSN_CALL_ARG_LOCATION,
+	emit it before next non-NOTE_INSN_CALL_ARG_LOCATION
+	non-NOTE_DURING_CALL_P insn.
+
 2012-02-09  Bin Cheng  <bin.cheng@arm.com>
 
 	PR middle-end/51867

gcc/var-tracking.c

@@ -8225,9 +8225,14 @@ emit_note_insn_var_location (void **varp, void *data)
       /* Make sure that the call related notes come first.  */
       while (NEXT_INSN (insn)
 	     && NOTE_P (insn)
+	     && ((NOTE_KIND (insn) == NOTE_INSN_VAR_LOCATION
 		  && NOTE_DURING_CALL_P (insn))
+		 || NOTE_KIND (insn) == NOTE_INSN_CALL_ARG_LOCATION))
 	insn = NEXT_INSN (insn);
-      if (NOTE_P (insn) && NOTE_DURING_CALL_P (insn))
+      if (NOTE_P (insn)
+	  && ((NOTE_KIND (insn) == NOTE_INSN_VAR_LOCATION
+	       && NOTE_DURING_CALL_P (insn))
+	      || NOTE_KIND (insn) == NOTE_INSN_CALL_ARG_LOCATION))
 	note = emit_note_after (NOTE_INSN_VAR_LOCATION, insn);
       else
 	note = emit_note_before (NOTE_INSN_VAR_LOCATION, insn);