[PATCH][committed]middle-end: explicitly initialize vec_stmts [PR113132]

[Tamar Christina]

Hi All,

when configured with --enable-checking=release we get a false
positive on the use of vec_stmts as the compiler seems unable
to notice it gets initialized through the pass-by-reference.

This explicitly initializes the local.

Bootstrapped Regtested on x86_64-pc-linux-gnu and no issues.

Committed under the obvious rule.

Thanks,
Tamar

gcc/ChangeLog:

        PR bootstrap/113132
        * tree-vect-loop.cc (vect_create_epilog_for_reduction): Initialize 
vec_stmts;

--- inline copy of patch -- 
diff --git a/gcc/tree-vect-loop.cc b/gcc/tree-vect-loop.cc
index 
88261a3a4f57d5e2124939b069b0e92c57d9abba..f51ae3e719e753059389cf9495b6d65b3b1191cb
 100644
--- a/gcc/tree-vect-loop.cc
+++ b/gcc/tree-vect-loop.cc
@@ -6207,7 +6207,7 @@ vect_create_epilog_for_reduction (loop_vec_info 
loop_vinfo,
   exit_bb = loop_exit->dest;
   exit_gsi = gsi_after_labels (exit_bb);
   reduc_inputs.create (slp_node ? vec_num : ncopies);
-  vec <gimple *> vec_stmts;
+  vec <gimple *> vec_stmts = vNULL;
   for (unsigned i = 0; i < vec_num; i++)
     {
       gimple_seq stmts = NULL;




-- 

diff --git a/gcc/tree-vect-loop.cc b/gcc/tree-vect-loop.cc
index 
88261a3a4f57d5e2124939b069b0e92c57d9abba..f51ae3e719e753059389cf9495b6d65b3b1191cb
 100644
--- a/gcc/tree-vect-loop.cc
+++ b/gcc/tree-vect-loop.cc
@@ -6207,7 +6207,7 @@ vect_create_epilog_for_reduction (loop_vec_info 
loop_vinfo,
   exit_bb = loop_exit->dest;
   exit_gsi = gsi_after_labels (exit_bb);
   reduc_inputs.create (slp_node ? vec_num : ncopies);
-  vec <gimple *> vec_stmts;
+  vec <gimple *> vec_stmts = vNULL;
   for (unsigned i = 0; i < vec_num; i++)
     {
       gimple_seq stmts = NULL;