Re: [patch] unbreak iq2000 build a bit

[nick clifton]

Hi Steven,

iq2000 build is broken since at least r162089 (July 2010). I'm going
to commit this patch to fix this part of the build problem.

Thanks.

It still
fails later one, but I don't care about that

FYI I have this patch installed in my local sources that allows the 
iq2000 port to build successfully.  I have not submitted it upstream yet 
because I am not sure if it is the correct fix for the problem.

Cheers
  Nick

Index: gcc/dwarf2out.c
===================================================================
--- gcc/dwarf2out.c     (revision 192527)
+++ gcc/dwarf2out.c     (working copy)
@@ -20092,11 +20092,13 @@
       ca_loc->call_arg_loc_note = loc_note;
       ca_loc->next = NULL;
       ca_loc->label = last_label;
-      gcc_assert (prev
-                 && (CALL_P (prev)
-                     || (NONJUMP_INSN_P (prev)
-                         && GET_CODE (PATTERN (prev)) == SEQUENCE
-                         && CALL_P (XVECEXP (PATTERN (prev), 0, 0)))));
+      while (prev != NULL_RTX
+            && ! CALL_P (prev)
+            && ! (NONJUMP_INSN_P (prev)
+                  && GET_CODE (PATTERN (prev)) == SEQUENCE
+                  && CALL_P (XVECEXP (PATTERN (prev), 0, 0))))
+       prev = prev_nonnote_nondebug_insn (prev);
+      gcc_assert (prev != NULL_RTX);
       if (!CALL_P (prev))
        prev = XVECEXP (PATTERN (prev), 0, 0);
       ca_loc->tail_call_p = SIBLING_CALL_P (prev);