From 12f40a80324d7c154f19f25c448a5ce27d38cd18 Mon Sep 17 00:00:00 2001
From: ReinUsesLisp <reinuseslisp@airmail.cc>
Date: Mon, 9 Dec 2019 21:44:36 -0300
Subject: [PATCH] Add OpMemoryBarrier

---
 include/sirit/sirit.h        |  5 +++++
 src/CMakeLists.txt           |  1 +
 src/instructions/barrier.cpp | 20 ++++++++++++++++++++
 3 files changed, 26 insertions(+)
 create mode 100644 src/instructions/barrier.cpp

diff --git a/include/sirit/sirit.h b/include/sirit/sirit.h
index aa6b976..a6d267d 100644
--- a/include/sirit/sirit.h
+++ b/include/sirit/sirit.h
@@ -364,6 +364,11 @@ public:
     /// Finish the current primitive and start a new one. No vertex is emitted.
     Id OpEndPrimitive();
 
+    // Barrier
+
+    /// Control the order that memory accesses are observed.
+    Id OpMemoryBarrier(Id scope, Id semantics);
+
     // Logical
 
     /// Result is true if any component of Vector is true, otherwise result is false.
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index e1a632a..1bcb6e3 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -27,6 +27,7 @@ add_library(sirit
     instructions/extension.cpp
     instructions/image.cpp
     instructions/group.cpp
+    instructions/barrier.cpp
 )
 
 target_compile_options(sirit PRIVATE ${SIRIT_CXX_FLAGS})
diff --git a/src/instructions/barrier.cpp b/src/instructions/barrier.cpp
new file mode 100644
index 0000000..8f91c8a
--- /dev/null
+++ b/src/instructions/barrier.cpp
@@ -0,0 +1,20 @@
+/* This file is part of the sirit project.
+ * Copyright (c) 2019 sirit
+ * This software may be used and distributed according to the terms of the
+ * 3-Clause BSD License
+ */
+
+#include <memory>
+#include "op.h"
+#include "sirit/sirit.h"
+
+namespace Sirit {
+
+Id Module::OpMemoryBarrier(Id scope, Id semantics) {
+    auto op = std::make_unique<Op>(spv::Op::OpMemoryBarrier);
+    op->Add(scope);
+    op->Add(semantics);
+    return AddCode(std::move(op));
+}
+
+} // namespace Sirit