llvm-project/mlir/integration_test/Dialect/Async/CPU/lit.local.cfg

import sys

# No JIT on win32.
if sys.platform == 'win32':
    config.unsupported = True
[mlir] Transform scf.parallel to scf.for + async.execute Depends On D89958 1. Adds `async.group`/`async.awaitall` to group together multiple async tokens/values 2. Rewrite scf.parallel operation into multiple concurrent async.execute operations over non overlapping subranges of the original loop. Example: ``` scf.for (%i, %j) = (%lbi, %lbj) to (%ubi, %ubj) step (%si, %sj) { "do_some_compute"(%i, %j): () -> () } ``` Converted to: ``` %c0 = constant 0 : index %c1 = constant 1 : index // Compute blocks sizes for each induction variable. %num_blocks_i = ... : index %num_blocks_j = ... : index %block_size_i = ... : index %block_size_j = ... : index // Create an async group to track async execute ops. %group = async.create_group scf.for %bi = %c0 to %num_blocks_i step %c1 { %block_start_i = ... : index %block_end_i = ... : index scf.for %bj = %c0 t0 %num_blocks_j step %c1 { %block_start_j = ... : index %block_end_j = ... : index // Execute the body of original parallel operation for the current // block. %token = async.execute { scf.for %i = %block_start_i to %block_end_i step %si { scf.for %j = %block_start_j to %block_end_j step %sj { "do_some_compute"(%i, %j): () -> () } } } // Add produced async token to the group. async.add_to_group %token, %group } } // Await completion of all async.execute operations. async.await_all %group ``` In this example outer loop launches inner block level loops as separate async execute operations which will be executed concurrently. At the end it waits for the completiom of all async execute operations. Reviewed By: ftynse, mehdi_amini Differential Revision: https://reviews.llvm.org/D89963 2020-11-13 19:01:52 +08:00			`import sys`

			`# No JIT on win32.`
			`if sys.platform == 'win32':`
			`config.unsupported = True`