From 4c3231302577445417715a7c22e879e4159376d3 Mon Sep 17 00:00:00 2001
From: Prathamesh Kulkarni <prathamesh.kulkarni@linaro.org>
Date: Tue, 19 Jul 2022 17:43:26 +0530
Subject: [PATCH] forwprop: Use lhs type instead of arg0 in folding
 VEC_PERM_EXPR.

gcc/ChangeLog:

	* tree-ssa-forwprop.cc (simplify_permutation): Use lhs type
	instead of TREE_TYPE (arg0) as result type in folding VEC_PERM_EXPR.
---
 gcc/tree-ssa-forwprop.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcc/tree-ssa-forwprop.cc b/gcc/tree-ssa-forwprop.cc
index fdc4bc8909d..d04cf4bccf8 100644
--- a/gcc/tree-ssa-forwprop.cc
+++ b/gcc/tree-ssa-forwprop.cc
@@ -2661,7 +2661,7 @@ simplify_permutation (gimple_stmt_iterator *gsi)
 
       /* Shuffle of a constructor.  */
       bool ret = false;
-      tree res_type = TREE_TYPE (arg0);
+      tree res_type = TREE_TYPE (gimple_assign_lhs (stmt));
       tree opt = fold_ternary (VEC_PERM_EXPR, res_type, arg0, arg1, op2);
       if (!opt
 	  || (TREE_CODE (opt) != CONSTRUCTOR && TREE_CODE (opt) != VECTOR_CST))
-- 
2.47.2