[PR80803 1/2] Streamline SRA access enqueuing

2017-06-13  Martin Jambor  <mjambor@suse.cz>

	* tree-sra.c (add_access_to_work_queue): Only enqueue accesses
	that have a first_link.
	(sort_and_splice_var_accesses): Do not check first_link before
	enquing.
	(subtree_mark_written_and_enqueue): Likewise.
	(propagate_all_subaccesses): Likewise and do not stop at first
	parent with a first_link.

From-SVN: r249153

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 0f4f469a26c5b3fce69965bfd8d1e99cd59569e3..4dec155ad86aa3bb9c454f457b2585f08aa464a3 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,13 @@
+2017-06-13  Martin Jambor  <mjambor@suse.cz>
+
+       * tree-sra.c (add_access_to_work_queue): Only enqueue accesses
+       that have a first_link.
+       (sort_and_splice_var_accesses): Do not check first_link before
+       enquing.
+       (subtree_mark_written_and_enqueue): Likewise.
+       (propagate_all_subaccesses): Likewise and do not stop at first
+       parent with a first_link.
+
 2017-06-13  Martin Jambor  <mjambor@suse.cz>
 
        * tree-sra.c (dump_access_tree_1): Fix accidental dumping to stderr

diff --git a/gcc/tree-sra.c b/gcc/tree-sra.c
index 42879adbad15fe9d71461d2a35fd46d400ce877f..05bc3d0e806f14629a7fd0215a5b694bf322d20d 100644 (file)
--- a/gcc/tree-sra.c
+++ b/gcc/tree-sra.c
@@ -627,7 +627,7 @@ relink_to_new_repr (struct access *new_racc, struct access *old_racc)
 static void
 add_access_to_work_queue (struct access *access)
 {
-  if (!access->grp_queued)
+  if (access->first_link && !access->grp_queued)
     {
       gcc_assert (!access->next_queued);
       access->next_queued = work_queue_head;
@@ -2112,8 +2112,7 @@ sort_and_splice_var_accesses (tree var)
       access->grp_total_scalarization = total_scalarization;
       access->grp_partial_lhs = grp_partial_lhs;
       access->grp_unscalarizable_region = unscalarizable_region;
-      if (access->first_link)
-       add_access_to_work_queue (access);
+      add_access_to_work_queue (access);
 
       *prev_acc_ptr = access;
       prev_acc_ptr = &access->next_grp;
@@ -2670,8 +2669,7 @@ subtree_mark_written_and_enqueue (struct access *access)
   if (access->grp_write)
     return;
   access->grp_write = true;
-  if (access->first_link)
-    add_access_to_work_queue (access);
+  add_access_to_work_queue (access);
 
   struct access *child;
   for (child = access->first_child; child; child = child->next_sibling)
@@ -2715,11 +2713,7 @@ propagate_all_subaccesses (void)
          if (reque_parents)
            do
              {
-               if (lacc->first_link)
-                 {
-                   add_access_to_work_queue (lacc);
-                   break;
-                 }
+               add_access_to_work_queue (lacc);
                lacc = lacc->parent;
              }
            while (lacc);