PR tree-optimization/51914

	* tree-vect-stmts.c (vectorizable_conversion): For
	cvt_type && modifier == WIDEN, put temporary with cvt_type
	at the beginning of vec_dsts and set vec_dest to temporary
	with vectype_out.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@183356 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index a863157..22a3a0f 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,11 @@
+2012-01-20  Jakub Jelinek  <jakub@redhat.com>
+
+       PR tree-optimization/51914
+       * tree-vect-stmts.c (vectorizable_conversion): For
+       cvt_type && modifier == WIDEN, put temporary with cvt_type
+       at the beginning of vec_dsts and set vec_dest to temporary
+       with vectype_out.
+
 2012-01-20  Eric Botcazou  <ebotcazou@adacore.com>
 
        * cfgrtl.c (rtl_dump_bb): Do not dump insns for {ENTRY|EXIT}_BLOCK.

diff --git a/gcc/tree-vect-stmts.c b/gcc/tree-vect-stmts.c
index 4deb16b..8e2b5fe 100644 (file)
--- a/gcc/tree-vect-stmts.c
+++ b/gcc/tree-vect-stmts.c
@@ -1,5 +1,5 @@
 /* Statement Analysis and Transformation for Vectorization
-   Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
+   Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
    Free Software Foundation, Inc.
    Contributed by Dorit Naishlos <dorit@il.ibm.com>
    and Ira Rosen <irar@il.ibm.com>
@@ -2420,7 +2420,9 @@ vectorizable_conversion (gimple stmt, gimple_stmt_iterator *gsi,
      from supportable_*_operation, and store them in the correct order
      for future use in vect_create_vectorized_*_stmts ().  */
   vec_dsts = VEC_alloc (tree, heap, multi_step_cvt + 1);
-  vec_dest = vect_create_destination_var (scalar_dest, vectype_out);
+  vec_dest = vect_create_destination_var (scalar_dest,
+                                         (cvt_type && modifier == WIDEN)
+                                         ? cvt_type : vectype_out);
   VEC_quick_push (tree, vec_dsts, vec_dest);
 
   if (multi_step_cvt)
@@ -2435,7 +2437,9 @@ vectorizable_conversion (gimple stmt, gimple_stmt_iterator *gsi,
     }
 
   if (cvt_type)
-    vec_dest = vect_create_destination_var (scalar_dest, cvt_type);
+    vec_dest = vect_create_destination_var (scalar_dest,
+                                           modifier == WIDEN
+                                           ? vectype_out : cvt_type);
 
   if (!slp_node)
     {