re PR bootstrap/43596 (Failed to boostrap)

	PR bootstrap/43596
	* cselib.c (cselib_process_insn): Clear cselib_current_insn
	even before returning from label, setjmp call or volatile asm
	handling.

From-SVN: r157869

gcc/ChangeLog

+2010-03-31  Jakub Jelinek  <jakub@redhat.com>
+
+	PR bootstrap/43596
+	* cselib.c (cselib_process_insn): Clear cselib_current_insn
+	even before returning from label, setjmp call or volatile asm
+	handling.
+
 2010-03-31  Richard Guenther  <rguenther@suse.de>
 
 	PR middle-end/43600

gcc/cselib.c

@@ -2155,12 +2155,13 @@ cselib_process_insn (rtx insn)
 	  && MEM_VOLATILE_P (PATTERN (insn))))
     {
       cselib_reset_table (next_uid);
+      cselib_current_insn = NULL_RTX;
       return;
     }
 
   if (! INSN_P (insn))
     {
-      cselib_current_insn = 0;
+      cselib_current_insn = NULL_RTX;
       return;
     }
 
@@ -2202,7 +2203,7 @@ cselib_process_insn (rtx insn)
       if (GET_CODE (XEXP (x, 0)) == CLOBBER)
 	cselib_invalidate_rtx (XEXP (XEXP (x, 0), 0));
 
-  cselib_current_insn = 0;
+  cselib_current_insn = NULL_RTX;
 
   if (n_useless_values > MAX_USELESS_VALUES
       /* remove_useless_values is linear in the hash table size.  Avoid