P4 to Git Change 1561015 by gandryey@gera-w8 on 2018/05/29 13:10:06

SWDEV-79445 - OCL generic changes and code clean-up
	Optimize memory dependency tracking logic:
	1. Add modified_ filed to the event object to track memory writes into device memory.
	2. Check memory dependency only if a write operation is currently requested or previously performed.

Affected files ...

... //depot/stg/opencl/drivers/opencl/runtime/device/pal/paldefs.hpp#35 edit
... //depot/stg/opencl/drivers/opencl/runtime/device/pal/palresource.cpp#66 edit
... //depot/stg/opencl/drivers/opencl/runtime/device/pal/palresource.hpp#24 edit
... //depot/stg/opencl/drivers/opencl/runtime/device/pal/palvirtual.cpp#100 edit
... //depot/stg/opencl/drivers/opencl/runtime/device/pal/palvirtual.hpp#52 edit

rocclr/runtime/device/pal/palresource.cpp

@@ -1665,6 +1665,31 @@ GpuEvent* Resource::getGpuEvent(const VirtualGPU& gpu) const {
   return &events_[idx];
 }
 
+// ================================================================================================
+void Resource::setModified(VirtualGPU& gpu, bool modified) const {
+  uint idx = gpu.index();
+  assert(idx < events_.size());
+  events_[idx].modified_ = modified;
+
+  // If current resource is a view, then update the parent as well
+  if (viewOwner_ != nullptr) {
+    viewOwner_->setModified(gpu, modified);
+  }
+}
+
+// ================================================================================================
+bool Resource::isModified(VirtualGPU& gpu) const {
+  uint idx = gpu.index();
+  assert(idx < events_.size());
+  bool modified = events_[idx].modified_;
+
+  // If current resource is a view, then get the parent state as well
+  if (viewOwner_ != nullptr) {
+    modified |= viewOwner_->isModified(gpu);
+  }
+  return modified;
+}
+
 // ================================================================================================
 void Resource::palFree() const {
   if (desc().type_ == OGLInterop) {