derek.holloway
7502bf64a4
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52 lines
1.4 KiB
MLIR
52 lines
1.4 KiB
MLIR
// RUN: mlir-opt -pass-pipeline='builtin.module(func.func(affine-loop-fusion))' %s | FileCheck %s
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// Test fusion of affine nests in the presence of other region-holding ops
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// (scf.for in the test case below) in the block.
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// CHECK-LABEL: func @scf_and_affine
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func.func @scf_and_affine(%A : memref<10xf32>) {
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%c0 = arith.constant 0 : index
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%c1 = arith.constant 1 : index
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%c10 = arith.constant 10 : index
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%cst = arith.constant 0.0 : f32
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%B = memref.alloc() : memref<10xf32>
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%C = memref.alloc() : memref<10xf32>
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affine.for %j = 0 to 10 {
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%v = affine.load %A[%j] : memref<10xf32>
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affine.store %v, %B[%j] : memref<10xf32>
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}
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affine.for %j = 0 to 10 {
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%v = affine.load %B[%j] : memref<10xf32>
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affine.store %v, %C[%j] : memref<10xf32>
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}
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// Nests are fused.
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// CHECK: affine.for %{{.*}} = 0 to 10
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// CHECK-NOT: affine.for
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// CHECK: scf.for
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scf.for %i = %c0 to %c10 step %c1 {
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memref.store %cst, %B[%i] : memref<10xf32>
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}
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// The nests below shouldn't be fused.
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affine.for %j = 0 to 10 {
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%v = affine.load %A[%j] : memref<10xf32>
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affine.store %v, %B[%j] : memref<10xf32>
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}
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scf.for %i = %c0 to %c10 step %c1 {
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memref.store %cst, %B[%i] : memref<10xf32>
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}
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affine.for %j = 0 to 10 {
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%v = affine.load %B[%j] : memref<10xf32>
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affine.store %v, %C[%j] : memref<10xf32>
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}
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// CHECK: affine.for
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// CHECK: scf.for
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// CHECK: affine.for
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return
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}
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