The wrapper used to hold the handle for resource type has just the
default copy constructor and assignment operator. This causes clang to
insert memcpys when it does an assignment of a resource type. The
memcpy then cause optimizations to fail when the memcpy is turned into a
load and store of an i64.
To fix this, we should define copying of a resource type by adding the
operator= and copy constructor.
Partially fixes#154669
This PR fix the debug infor generation for RWBuffer types.
- This implements the [same fix as
DXC](https://github.com/microsoft/DirectXShaderCompiler/pull/6296).
- Adds the HLSLAttributedResource debug info generation
Closes#118523
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Co-authored-by: Joao Saffran <jderezende@microsoft.com>
Co-authored-by: joaosaffran <joao.saffran@microsoft.com>
