From: 박종현/동작제어Lab(SR)/Staff Engineer/삼성전자 <jh1302.park@samsung.com>
Date: Tue, 2 Oct 2018 04:39:08 +0000 (+0900)
Subject: [enco] Eliminate Objects with no backing bag (#1719)
X-Git-Tag: nncc_backup~1649
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=d91275e3182b9995c4d136a36abc29a031ee6059;p=platform%2Fcore%2Fml%2Fnnfw.git

[enco] Eliminate Objects with no backing bag (#1719)

This commit allows Dead Object Elimination (DOE) pass to eliminate
objects with no backing bag (if it has no uses).

Signed-off-by: Jonghyun Park <jh1302.park@samsung.com>
---

diff --git a/contrib/enco/core/src/Transforms/DeadObjectElimination.cpp b/contrib/enco/core/src/Transforms/DeadObjectElimination.cpp
index 1f5970e..fc77d9b 100644
--- a/contrib/enco/core/src/Transforms/DeadObjectElimination.cpp
+++ b/contrib/enco/core/src/Transforms/DeadObjectElimination.cpp
@@ -28,11 +28,20 @@ std::set<coco::Object *> dead_objects(const coco::Module *m)
   for (uint32_t n = 0; n < m->entity()->object()->size(); ++n)
   {
     auto obj = m->entity()->object()->at(n);
-    auto bag = obj->bag();
 
-    if (coco::readers(bag).empty() && !(bag->isOutput()))
+    if (auto bag = obj->bag())
     {
-      res.insert(obj);
+      if (coco::readers(bag).empty() && !(bag->isOutput()))
+      {
+        res.insert(obj);
+      }
+    }
+    else
+    {
+      if (obj->uses()->size() == 0)
+      {
+        res.insert(obj);
+      }
     }
   }