Ivan Butygin a93ec06ae6 [mlir][gpu] Introduce host_shared flag to gpu.alloc
Motivation: we have lowering pipeline based on upstream gpu and spirv dialects and and we are using host shared gpu memory to transfer data between host and device.
Add `host_shared` flag to `gpu.alloc` to distinguish between shared and device-only gpu memory allocations.

Differential Revision: https://reviews.llvm.org/D133533
2022-10-05 22:01:30 +02:00
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