[PATCH 0/1] MR182: vkd3d-shader/hlsl: Introduce hlsl_ir_index, part 2/2 (optional).

[Francisco Casas (＠fcasas)]

This patch makes index expressions on resources hlsl_ir_index nodes
instead of hlsl_ir_resource_load nodes, because it is not known if they
will be used later as the lhs of an hlsl_ir_resource_store.

For now, the only benefit is consistency.