llvm-project

da28d01e - [mlir][acc] Introduce privatization operations for codegen (#195273)

[mlir][acc] Introduce privatization operations for codegen (#195273) This change adds codegen-oriented operations for representing private-variable storage and materializing the storage that a particular parallel execution actually uses. The two operations are meant to be used together: - acc.privatize introduces an abstract handle for the privatized storage, including the parallel levels that determine the ultimate size of the storage needed. Which parallel levels apply can be stated when that structure is known, or omitted so the same representation can be refined later as launch and loop parallelism are decided. - acc.private_local takes that handle and yields the concrete storage for the current execution context(for example the slice that corresponds to this gang or worker).