6bf043e743
This commit removes the deallocation capabilities of one-shot-bufferization. One-shot-bufferization should never deallocate any memrefs as this should be entirely handled by the ownership-based-buffer-deallocation pass going forward. This means the `allow-return-allocs` pass option will default to true now, `create-deallocs` defaults to false and they, as well as the escape attribute indicating whether a memref escapes the current region, will be removed. A new `allow-return-allocs-from-loops` option is added as a temporary workaround for some bufferization limitations.
22 lines
670 B
MLIR
22 lines
670 B
MLIR
// RUN: mlir-opt %s \
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// RUN: -one-shot-bufferize="allow-unknown-ops" \
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// RUN: -split-input-file | \
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// RUN: FileCheck %s
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// CHECK-LABEL: func @out_of_place_bufferization
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func.func @out_of_place_bufferization(%t1 : tensor<?xf32>) -> (f32, f32) {
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// CHECK: memref.alloc
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// CHECK: memref.copy
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// CHECK-NOT: memref.dealloc
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%cst = arith.constant 0.0 : f32
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%idx = arith.constant 5 : index
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// This bufferizes out-of-place. An allocation + copy will be inserted.
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%0 = tensor.insert %cst into %t1[%idx] : tensor<?xf32>
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%1 = tensor.extract %t1[%idx] : tensor<?xf32>
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%2 = tensor.extract %0[%idx] : tensor<?xf32>
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return %1, %2 : f32, f32
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}
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