SWDEV-336024 - Clear device heap to 0

The heap must be cleared once per device, but ROCclr doesn't
create a queue per device in HIP. Hence, the clear operation will
be performed during the first queue creation.

Change-Id: I52ceb06d67d11cde6d019c5ab510059f426a9bfb


[ROCm/clr commit: 04bfd93569]

projects/clr/rocclr/device/rocm/rocdevice.cpp

@@ -788,8 +788,8 @@ bool Device::create() {
 
   if (amd::IS_HIP) {
     // Allocate initial heap for device memory allocator
-    static constexpr size_t HeapBufferSize = 1024 * Ki;
-    heap_buffer_ = createMemory(HeapBufferSize);
+    constexpr size_t kHeapBufferSize = 128 * Ki;
+    heap_buffer_ = createPrivateBuffer(kHeapBufferSize);
   }
 
   return true;
@@ -1659,6 +1659,7 @@ device::VirtualDevice* Device::createVirtualDevice(amd::CommandQueue* queue) {
   return virtualDevice;
 }
 
+// ================================================================================================
 bool Device::globalFreeMemory(size_t* freeMemory) const {
   const uint TotalFreeMemory = 0;
   const uint LargestFreeBlock = 1;
@@ -1673,6 +1674,7 @@ bool Device::globalFreeMemory(size_t* freeMemory) const {
   return true;
 }
 
+// ================================================================================================
 bool Device::bindExternalDevice(uint flags, void* const gfxDevice[], void* gfxContext,
                                 bool validateOnly) {
 #if defined(_WIN32)
@@ -1888,17 +1890,6 @@ device::Memory* Device::createMemory(amd::Memory& owner) const {
   return memory;
 }
 
-// ================================================================================================
-device::Memory* Device::createMemory(size_t size) const {
-  auto buffer = new roc::Buffer(*this, size);
-  static constexpr bool LocalAlloc = true;
-  if ((buffer == nullptr) || !buffer->create(LocalAlloc)) {
-    LogError("Couldn't allocate memory on device!");
-    return nullptr;
-  }
-  return buffer;
-}
-
 // ================================================================================================
 void* Device::hostAlloc(size_t size, size_t alignment, MemorySegment mem_seg) const {
   void* ptr = nullptr;