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Added RecursiveMemoryEffects to ExecuteRegionOp #164390

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Added RecursiveMemoryEffects to ExecuteRegionOp #164390

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15b97e6
Added RecursiveMemoryEffects to ExecuteRegionOp like all other ops wi…
ddubov100 Oct 21, 2025
53fba10
Merge branch 'llvm:main' into users/ddubov100/recursive_memory_effect…
ddubov100 Oct 27, 2025
65ce423
Update mlir/test/Dialect/Bufferization/Transforms/OwnershipBasedBuffe…
ddubov100 Oct 27, 2025
6be3300
Update mlir/test/Dialect/Bufferization/Transforms/OwnershipBasedBuffe…
ddubov100 Oct 27, 2025
b34455d
Update mlir/test/Dialect/Bufferization/Transforms/OwnershipBasedBuffe…
ddubov100 Oct 27, 2025
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2 changes: 1 addition & 1 deletion mlir/include/mlir/Dialect/SCF/IR/SCFOps.td
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Original file line number Diff line number Diff line change
Expand Up @@ -77,7 +77,7 @@ def ConditionOp : SCF_Op<"condition", [
//===----------------------------------------------------------------------===//

def ExecuteRegionOp : SCF_Op<"execute_region", [
DeclareOpInterfaceMethods<RegionBranchOpInterface>]> {
DeclareOpInterfaceMethods<RegionBranchOpInterface>, RecursiveMemoryEffects]> {
let summary = "operation that executes its region exactly once";
let description = [{
The `scf.execute_region` operation is used to allow multiple blocks within SCF
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21 changes: 21 additions & 0 deletions ...erization/Transforms/OwnershipBasedBufferDeallocation/dealloc-memoryeffect-interface.mlir
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Expand Up @@ -156,3 +156,24 @@ func.func @manual_deallocation(%c: i1, %f: f32, %idx: index) -> f32 {
// CHECK: cf.assert %[[true]], "expected that the block does not have ownership"
// CHECK: memref.dealloc %[[manual_alloc]]
// CHECK: bufferization.dealloc (%[[managed_alloc]] : memref<5xf32>) if (%[[true]])

// -----

// CHECK-LABEL: func.func private @properly_creats_deallocations_in_execute_region(
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typo here, which makes the test fail

// CHECK: %[[true:.*]] = arith.constant true
// CHECK: scf.execute_region no_inline {
// CHECK: %[[alloc:.*]] = memref.alloc() {alignment = 64 : i64} : memref<1x63x378x16xui8>
// CHECK: bufferization.dealloc (%[[alloc]] : memref<1x63x378x16xui8>) if (%[[true]])

func.func private @properly_creates_deallocations_in_execute_region(%arg1: memref<1x16x252x380xui8> ) -> (memref<1x250x378x16xui8> ) {
%alloc = memref.alloc() {alignment = 64 : i64} : memref<1x250x378x16xui8>
scf.execute_region no_inline {
%subview = memref.subview %arg1[0, 0, 0, 0] [1, 16, 65, 380] [1, 1, 1, 1] : memref<1x16x252x380xui8> to memref<1x16x65x380xui8, strided<[1532160, 95760, 380, 1]>>
%alloc_3 = memref.alloc() {alignment = 64 : i64} : memref<1x63x378x16xui8>
test.buffer_based in(%subview: memref<1x16x65x380xui8, strided<[1532160, 95760, 380, 1]>>) out(%alloc_3: memref<1x63x378x16xui8>)
%subview_7 = memref.subview %alloc[0, 0, 0, 0] [1, 63, 378, 16] [1, 1, 1, 1] : memref<1x250x378x16xui8> to memref<1x63x378x16xui8, strided<[1512000, 6048, 16, 1]>>
test.copy(%alloc_3, %subview_7) : (memref<1x63x378x16xui8>, memref<1x63x378x16xui8, strided<[1512000, 6048, 16, 1]>>)
scf.yield
}
return %alloc : memref<1x250x378x16xui8>
}
20 changes: 12 additions & 8 deletions mlir/test/Dialect/Bufferization/Transforms/one-shot-module-bufferize.mlir
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Expand Up @@ -381,15 +381,19 @@ func.func private @execute_region_test(%t1 : tensor<?xf32>)
// -----

// CHECK-LABEL: func @no_inline_execute_region_not_canonicalized
func.func @no_inline_execute_region_not_canonicalized() {
%c = arith.constant 42 : i32
// CHECK: scf.execute_region
// CHECK-SAME: no_inline
%v = scf.execute_region -> i32 no_inline {
scf.yield %c : i32
module {
func.func private @foo()->()
func.func @no_inline_execute_region_not_canonicalized() {
%c = arith.constant 42 : i32
// CHECK: scf.execute_region
// CHECK-SAME: no_inline
%v = scf.execute_region -> i32 no_inline {
func.call @foo():()->()
scf.yield %c : i32
}
// CHECK: return
return
}
// CHECK: return
return
}

// -----
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