From 58d1ae32ee23b7992ceea2548ee01e523861af9a Mon Sep 17 00:00:00 2001
From: Jeff Daily <jeff.daily@amd.com>
Date: Tue, 19 Nov 2019 09:42:43 -0800
Subject: [PATCH] hipStreamSynchronize can skip marker if stream is empty
 (#1667)

[ROCm/clr commit: dfaaf046117915a11003e5f9c58151bbb2e64a11]
---
 projects/clr/hipamd/src/hip_hcc.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/projects/clr/hipamd/src/hip_hcc.cpp b/projects/clr/hipamd/src/hip_hcc.cpp
index 377ce0aad4..cc83ca0657 100644
--- a/projects/clr/hipamd/src/hip_hcc.cpp
+++ b/projects/clr/hipamd/src/hip_hcc.cpp
@@ -310,6 +310,8 @@ void ihipStream_t::locked_wait() {
     hc::completion_future marker;
     {
         LockedAccessor_StreamCrit_t crit(_criticalData);
+        // skipping marker since stream is empty
+        if (crit->_av.get_is_empty()) return;
         marker = crit->_av.create_marker(hc::no_scope);
     }