From 1d9fec7937f45dde5e04cac966a2d9a12f2fc15a Mon Sep 17 00:00:00 2001
From: Yiran Wang <yiran@google.com>
Date: Tue, 23 Jun 2015 15:33:17 -0700
Subject: Synchronize with google/gcc-4_9 to r224707 (from r214835)

Change-Id: I3d6f06fc613c8f8b6a82143dc44b7338483aac5d
---
 gcc-4.9/gcc/ipa-cp.c | 26 ++++++++++++++++++++------
 1 file changed, 20 insertions(+), 6 deletions(-)

(limited to 'gcc-4.9/gcc/ipa-cp.c')

diff --git a/gcc-4.9/gcc/ipa-cp.c b/gcc-4.9/gcc/ipa-cp.c
index 16c629d55..b3c0c881f 100644
--- a/gcc-4.9/gcc/ipa-cp.c
+++ b/gcc-4.9/gcc/ipa-cp.c
@@ -3036,6 +3036,11 @@ intersect_aggregates_with_edge (struct cgraph_edge *cs, int index,
 		intersect_with_agg_replacements (cs->caller, src_idx,
 						 &inter, 0);
 	    }
+	  else
+	    {
+	      inter.release ();
+	      return vNULL;
+	    }
 	}
       else
 	{
@@ -3051,6 +3056,11 @@ intersect_aggregates_with_edge (struct cgraph_edge *cs, int index,
 	      else
 		intersect_with_plats (src_plats, &inter, 0);
 	    }
+	  else
+	    {
+	      inter.release ();
+	      return vNULL;
+	    }
 	}
     }
   else if (jfunc->type == IPA_JF_ANCESTOR
@@ -3134,7 +3144,8 @@ find_aggregate_values_for_callers_subset (struct cgraph_node *node,
 					  vec<cgraph_edge_p> callers)
 {
   struct ipa_node_params *dest_info = IPA_NODE_REF (node);
-  struct ipa_agg_replacement_value *res = NULL;
+  struct ipa_agg_replacement_value *res;
+  struct ipa_agg_replacement_value **tail = &res;
   struct cgraph_edge *cs;
   int i, j, count = ipa_get_param_count (dest_info);
 
@@ -3178,14 +3189,15 @@ find_aggregate_values_for_callers_subset (struct cgraph_node *node,
 	  v->offset = item->offset;
 	  v->value = item->value;
 	  v->by_ref = plats->aggs_by_ref;
-	  v->next = res;
-	  res = v;
+	  *tail = v;
+	  tail = &v->next;
 	}
 
     next_param:
       if (inter.exists ())
 	inter.release ();
     }
+  *tail = NULL;
   return res;
 }
 
@@ -3194,7 +3206,8 @@ find_aggregate_values_for_callers_subset (struct cgraph_node *node,
 static struct ipa_agg_replacement_value *
 known_aggs_to_agg_replacement_list (vec<ipa_agg_jump_function> known_aggs)
 {
-  struct ipa_agg_replacement_value *res = NULL;
+  struct ipa_agg_replacement_value *res;
+  struct ipa_agg_replacement_value **tail = &res;
   struct ipa_agg_jump_function *aggjf;
   struct ipa_agg_jf_item *item;
   int i, j;
@@ -3208,9 +3221,10 @@ known_aggs_to_agg_replacement_list (vec<ipa_agg_jump_function> known_aggs)
 	v->offset = item->offset;
 	v->value = item->value;
 	v->by_ref = aggjf->by_ref;
-	v->next = res;
-	res = v;
+	*tail = v;
+	tail = &v->next;
       }
+  *tail = NULL;
   return res;
 }
 
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