From: Kewen Lin <linkw@linux.ibm.com>
Date: Thu, 25 Mar 2021 12:53:06 +0000 (-0500)
Subject: vect: Init inside_cost in vect_model_reduction_cost
X-Git-Tag: basepoints/gcc-12~430
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=068d02e896d3df17b59b013a82ca0bf9faf058f3;p=thirdparty%2Fgcc.git

vect: Init inside_cost in vect_model_reduction_cost

This patch is to initialize the inside_cost as zero, can avoid
to use its uninitialized value when some path doesn't assign it.

gcc/ChangeLog:

	* tree-vect-loop.c (vect_model_reduction_cost): Init inside_cost.
---

diff --git a/gcc/tree-vect-loop.c b/gcc/tree-vect-loop.c
index 3e973e774af8..38d96fc16346 100644
--- a/gcc/tree-vect-loop.c
+++ b/gcc/tree-vect-loop.c
@@ -4465,7 +4465,7 @@ vect_model_reduction_cost (loop_vec_info loop_vinfo,
 			   vect_reduction_type reduction_type,
 			   int ncopies, stmt_vector_for_cost *cost_vec)
 {
-  int prologue_cost = 0, epilogue_cost = 0, inside_cost;
+  int prologue_cost = 0, epilogue_cost = 0, inside_cost = 0;
   enum tree_code code;
   optab optab;
   tree vectype;