From 22e4f1fb6cda89074fa82ba70dfd757fb9ead5f0 Mon Sep 17 00:00:00 2001
From: Richard Biener <rguenther@suse.de>
Date: Tue, 30 Oct 2018 11:27:32 +0000
Subject: [PATCH] re PR tree-optimization/87800 (CPU2006 416.gamess failed to
 build with LTO)

2018-10-30  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/87800
	* tree-vect-slp.c (vect_build_slp_tree_2): Reject any
	non-induction or reduction PHIs.

From-SVN: r265619
---
 gcc/ChangeLog       | 8 +++++++-
 gcc/tree-vect-slp.c | 6 +++++-
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index c5eecd0951d..da7b998f39a 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,6 +1,12 @@
+2018-10-30  Richard Biener  <rguenther@suse.de>
+
+	PR tree-optimization/87800
+	* tree-vect-slp.c (vect_build_slp_tree_2): Reject any
+	non-induction or reduction PHIs.
+
 2018-10-30 Sameera Deshpande <sameera.deshpande@linaro.org
 
-	* gcc/config/aarch64/falkor-tag-collision-avoidance.c
+	* config/aarch64/falkor-tag-collision-avoidance.c
 	(execute_tag_collision_avoidance): Call df_note_add_problem.
 
 2018-10-30  Martin Liska  <mliska@suse.cz>
diff --git a/gcc/tree-vect-slp.c b/gcc/tree-vect-slp.c
index 6ec7358c2dc..e7e5d252c00 100644
--- a/gcc/tree-vect-slp.c
+++ b/gcc/tree-vect-slp.c
@@ -1116,7 +1116,9 @@ vect_build_slp_tree_2 (vec_info *vinfo,
 	    if (stmt_info != other_info)
 	      return NULL;
 	}
-      else
+      else if (def_type == vect_reduction_def
+	       || def_type == vect_double_reduction_def
+	       || def_type == vect_nested_cycle)
 	{
 	  /* Else def types have to match.  */
 	  stmt_vec_info other_info;
@@ -1130,6 +1132,8 @@ vect_build_slp_tree_2 (vec_info *vinfo,
 		return NULL;
 	    }
 	}
+      else
+	return NULL;
       node = vect_create_new_slp_node (stmts);
       return node;
     }
-- 
2.30.2