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1// RUN: true
2// TODO: re-enable when not flaky.
3// _UN:   mlir-opt %s -async-ref-counting                                      \
4// _UN:               -convert-async-to-llvm                                   \
5// _UN:               -convert-linalg-to-loops                                 \
6// _UN:               -convert-linalg-to-llvm                                  \
7// _UN:               -convert-std-to-llvm                                     \
8// _UN: | mlir-cpu-runner                                                      \
9// _UN:     -e main -entry-point-result=void -O0                               \
10// _UN:     -shared-libs=%linalg_test_lib_dir/libmlir_c_runner_utils%shlibext  \
11// _UN:     -shared-libs=%linalg_test_lib_dir/libmlir_runner_utils%shlibext    \
12// _UN:     -shared-libs=%linalg_test_lib_dir/libmlir_async_runtime%shlibext   \
13// _UN: | FileCheck %s
14
15func @main() {
16  %i0 = constant 0 : index
17  %i1 = constant 1 : index
18  %i2 = constant 2 : index
19  %i3 = constant 3 : index
20
21  %c0 = constant 0.0 : f32
22  %c1 = constant 1.0 : f32
23  %c2 = constant 2.0 : f32
24  %c3 = constant 3.0 : f32
25  %c4 = constant 4.0 : f32
26
27  %A = alloc() : memref<4xf32>
28  linalg.fill(%A, %c0) : memref<4xf32>, f32
29
30  // CHECK: [0, 0, 0, 0]
31  %U = memref_cast %A :  memref<4xf32> to memref<*xf32>
32  call @print_memref_f32(%U): (memref<*xf32>) -> ()
33
34  // CHECK: Current thread id: [[MAIN:.*]]
35  // CHECK: [1, 0, 0, 0]
36  store %c1, %A[%i0]: memref<4xf32>
37  call @mlirAsyncRuntimePrintCurrentThreadId(): () -> ()
38  call @print_memref_f32(%U): (memref<*xf32>) -> ()
39
40  %outer = async.execute {
41    // CHECK: Current thread id: [[THREAD0:.*]]
42    // CHECK: [1, 2, 0, 0]
43    store %c2, %A[%i1]: memref<4xf32>
44    call @mlirAsyncRuntimePrintCurrentThreadId(): () -> ()
45    call @print_memref_f32(%U): (memref<*xf32>) -> ()
46
47    // No op async region to create a token for testing async dependency.
48    %noop = async.execute {
49      // CHECK: Current thread id: [[THREAD1:.*]]
50      call @mlirAsyncRuntimePrintCurrentThreadId(): () -> ()
51      async.yield
52    }
53
54    %inner = async.execute [%noop] {
55      // CHECK: Current thread id: [[THREAD2:.*]]
56      // CHECK: [1, 2, 3, 0]
57      store %c3, %A[%i2]: memref<4xf32>
58      call @mlirAsyncRuntimePrintCurrentThreadId(): () -> ()
59      call @print_memref_f32(%U): (memref<*xf32>) -> ()
60
61      async.yield
62    }
63    async.await %inner : !async.token
64
65    // CHECK: Current thread id: [[THREAD3:.*]]
66    // CHECK: [1, 2, 3, 4]
67    store %c4, %A[%i3]: memref<4xf32>
68    call @mlirAsyncRuntimePrintCurrentThreadId(): () -> ()
69    call @print_memref_f32(%U): (memref<*xf32>) -> ()
70
71    async.yield
72  }
73  async.await %outer : !async.token
74
75  // CHECK: Current thread id: [[MAIN]]
76  // CHECK: [1, 2, 3, 4]
77  call @mlirAsyncRuntimePrintCurrentThreadId(): () -> ()
78  call @print_memref_f32(%U): (memref<*xf32>) -> ()
79
80  dealloc %A : memref<4xf32>
81
82  return
83}
84
85func private @mlirAsyncRuntimePrintCurrentThreadId() -> ()
86
87func private @print_memref_f32(memref<*xf32>) attributes { llvm.emit_c_interface }
88