[PATCH, i386, Pointer Bounds Checker 38/x] Avoid warning for missed IPA_REF_CHKP in switch

[Ilya Enkovich]

Hi,

Seems some new warnings appeared lately and now I see a bootstrap failure for 
mpx branch due to missing IPA_REF_CHKP case in switch statement in 
process_references function.  This function handles varpool_nodes which cannot 
have references of this kind.  This patch fixes a warning.

Thanks,
Ilya
--
2014-10-01  Ilya Enkovich  <ilya.enkov...@intel.com>

        * ipa.c (process_references): Support IPA_REF_CHKP.


diff --git a/gcc/ipa.c b/gcc/ipa.c
index 39ee815..78f251a 100644
--- a/gcc/ipa.c
+++ b/gcc/ipa.c
@@ -637,6 +637,8 @@ process_references (varpool_node *vnode,
        process_references (dyn_cast<varpool_node *> (ref->referring), written,
                            address_taken, read, explicit_refs);
        break;
+      case IPA_REF_CHKP:
+       gcc_unreachable ();
       }
 }