From: Richard Biener <rguenther@suse.de>
Date: Fri, 15 Jul 2016 07:38:01 +0000 (+0000)
Subject: i386.c (ix86_builtin_vectorization_cost): Adjust vec_construct cost.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=8d4fc2d3d0c8f87bb3e182be1a618a511f8f9465;p=gcc.git

i386.c (ix86_builtin_vectorization_cost): Adjust vec_construct cost.

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

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

From-SVN: r238364
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 8da237861a1..624d4d63b8f 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 d190bef5299..ba35dce799e 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 ();