From: rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Fri, 15 Jul 2016 07:38:01 +0000 (+0000)
Subject: 2016-07-15  Richard Biener  <rguenther@suse.de>
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=9c34b2ceef1fb9012cbbd6f0884b520fa2603755;p=thirdparty%2Fgcc.git

2016-07-15  Richard Biener  <rguenther@suse.de>

	* config/i386/i386.c (ix86_builtin_vectorization_cost): Adjust
	vec_construct cost.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@238364 138bc75d-0d04-0410-961f-82ee72b054a4
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 8da237861a18..624d4d63b8f2 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2016-07-15  Richard Biener  <rguenther@suse.de>
+
+	* config/i386/i386.c (ix86_builtin_vectorization_cost): Adjust
+	vec_construct cost.
+
 2016-07-14  Jakub Jelinek  <jakub@redhat.com>
 
 	PR tree-optimization/71872
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index d190bef52999..ba35dce799e3 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -49770,8 +49770,6 @@ static int
 ix86_builtin_vectorization_cost (enum vect_cost_for_stmt type_of_cost,
                                  tree vectype, int)
 {
-  unsigned elements;
-
   switch (type_of_cost)
     {
       case scalar_stmt:
@@ -49813,8 +49811,7 @@ ix86_builtin_vectorization_cost (enum vect_cost_for_stmt type_of_cost,
         return ix86_cost->vec_stmt_cost;
 
       case vec_construct:
-	elements = TYPE_VECTOR_SUBPARTS (vectype);
-	return ix86_cost->vec_stmt_cost * (elements / 2 + 1);
+	return ix86_cost->vec_stmt_cost * (TYPE_VECTOR_SUBPARTS (vectype) - 1);
 
       default:
         gcc_unreachable ();