ae1ea0bead
This patch introduces a new conversion to convert bufferization.clone operations into a memref.alloc and a memref.copy operation. This transformation is needed to transform all remaining clones which "survive" all previous transformations, before a given program is lowered further (to LLVM e.g.). Otherwise, these operations cannot be handled anymore and lead to compile errors. See: https://llvm.discourse.group/t/bufferization-error-related-to-memref-clone/4665 Differential Revision: https://reviews.llvm.org/D114233
39 lines
1.4 KiB
MLIR
39 lines
1.4 KiB
MLIR
// RUN: mlir-opt -verify-diagnostics -convert-bufferization-to-memref -split-input-file %s | FileCheck %s
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// CHECK-LABEL: @conversion_static
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func @conversion_static(%arg0 : memref<2xf32>) -> memref<2xf32> {
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%0 = bufferization.clone %arg0 : memref<2xf32> to memref<2xf32>
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memref.dealloc %arg0 : memref<2xf32>
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return %0 : memref<2xf32>
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}
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// CHECK: %[[ALLOC:.*]] = memref.alloc
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// CHECK-NEXT: memref.copy %[[ARG:.*]], %[[ALLOC]]
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// CHECK-NEXT: memref.dealloc %[[ARG]]
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// CHECK-NEXT: return %[[ALLOC]]
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// -----
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// CHECK-LABEL: @conversion_dynamic
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func @conversion_dynamic(%arg0 : memref<?xf32>) -> memref<?xf32> {
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%1 = bufferization.clone %arg0 : memref<?xf32> to memref<?xf32>
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memref.dealloc %arg0 : memref<?xf32>
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return %1 : memref<?xf32>
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}
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// CHECK: %[[CONST:.*]] = arith.constant
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// CHECK-NEXT: %[[DIM:.*]] = memref.dim %[[ARG:.*]], %[[CONST]]
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// CHECK-NEXT: %[[ALLOC:.*]] = memref.alloc(%[[DIM]])
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// CHECK-NEXT: memref.copy %[[ARG]], %[[ALLOC]]
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// CHECK-NEXT: memref.dealloc %[[ARG]]
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// CHECK-NEXT: return %[[ALLOC]]
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// -----
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func @conversion_unknown(%arg0 : memref<*xf32>) -> memref<*xf32> {
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// expected-error@+1 {{failed to legalize operation 'bufferization.clone' that was explicitly marked illegal}}
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%1 = bufferization.clone %arg0 : memref<*xf32> to memref<*xf32>
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memref.dealloc %arg0 : memref<*xf32>
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return %1 : memref<*xf32>
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}
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