[mlir][vulkan-runner] Fix buffer usage flags

The buffers are used as source or destination of transfer commands
so always add VK_BUFFER_USAGE_TRANSFER_{DST,SRC}_BIT to their usage
flags.

Signed-off-by: Kevin Petit <[email protected]>

Author: kpet

mlir/tools/mlir-vulkan-runner/VulkanRuntime.cpp

@@ -452,7 +452,8 @@ LogicalResult VulkanRuntime::createMemoryBuffers() {
       bufferCreateInfo.pNext = nullptr;
       bufferCreateInfo.flags = 0;
       bufferCreateInfo.size = bufferSize;
-      bufferCreateInfo.usage = bufferUsage;
+      bufferCreateInfo.usage = bufferUsage | VK_BUFFER_USAGE_TRANSFER_DST_BIT |
+                               VK_BUFFER_USAGE_TRANSFER_SRC_BIT;
       bufferCreateInfo.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
       bufferCreateInfo.queueFamilyIndexCount = 1;
       bufferCreateInfo.pQueueFamilyIndices = &queueFamilyIndex;