forked from OSchip/llvm-project
752 lines
22 KiB
MLIR
752 lines
22 KiB
MLIR
// RUN: mlir-opt -buffer-hoisting -split-input-file %s | FileCheck %s
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// This file checks the behaviour of BufferHoisting pass for moving Alloc
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// operations to their correct positions.
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// Test Case:
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// bb0
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// / \
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// bb1 bb2 <- Initial position of AllocOp
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// \ /
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// bb3
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// BufferHoisting expected behavior: It should move the existing AllocOp to
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// the entry block.
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// CHECK-LABEL: func @condBranch
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func @condBranch(%arg0: i1, %arg1: memref<2xf32>, %arg2: memref<2xf32>) {
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cond_br %arg0, ^bb1, ^bb2
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^bb1:
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br ^bb3(%arg1 : memref<2xf32>)
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^bb2:
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%0 = alloc() : memref<2xf32>
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test.buffer_based in(%arg1: memref<2xf32>) out(%0: memref<2xf32>)
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br ^bb3(%0 : memref<2xf32>)
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^bb3(%1: memref<2xf32>):
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test.copy(%1, %arg2) : (memref<2xf32>, memref<2xf32>)
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return
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}
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// CHECK-NEXT: %[[ALLOC:.*]] = alloc()
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// CHECK-NEXT: cond_br
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// -----
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// Test Case:
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// bb0
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// / \
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// bb1 bb2 <- Initial position of AllocOp
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// \ /
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// bb3
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// BufferHoisting expected behavior: It should not move the existing AllocOp
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// to any other block since the alloc has a dynamic dependency to block argument
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// %0 in bb2.
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// CHECK-LABEL: func @condBranchDynamicType
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func @condBranchDynamicType(
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%arg0: i1,
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%arg1: memref<?xf32>,
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%arg2: memref<?xf32>,
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%arg3: index) {
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cond_br %arg0, ^bb1, ^bb2(%arg3: index)
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^bb1:
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br ^bb3(%arg1 : memref<?xf32>)
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^bb2(%0: index):
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%1 = alloc(%0) : memref<?xf32>
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test.buffer_based in(%arg1: memref<?xf32>) out(%1: memref<?xf32>)
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br ^bb3(%1 : memref<?xf32>)
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^bb3(%2: memref<?xf32>):
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test.copy(%2, %arg2) : (memref<?xf32>, memref<?xf32>)
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return
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}
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// CHECK-NEXT: cond_br
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// CHECK: ^bb2
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// CHECK: ^bb2(%[[IDX:.*]]:{{.*}})
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// CHECK-NEXT: %[[ALLOC0:.*]] = alloc(%[[IDX]])
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// CHECK-NEXT: test.buffer_based
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// -----
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// Test Case:
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// bb0
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// / \
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// bb1 bb2 <- Initial position of AllocOp
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// | / \
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// | bb3 bb4
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// | \ /
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// \ bb5
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// \ /
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// bb6
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// |
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// bb7
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// BufferHoisting expected behavior: It should not move the existing AllocOp
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// to any other block since the alloc has a dynamic dependency to block argument
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// %0 in bb2.
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// CHECK-LABEL: func @condBranchDynamicTypeNested
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func @condBranchDynamicTypeNested(
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%arg0: i1,
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%arg1: memref<?xf32>,
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%arg2: memref<?xf32>,
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%arg3: index) {
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cond_br %arg0, ^bb1, ^bb2(%arg3: index)
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^bb1:
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br ^bb6(%arg1 : memref<?xf32>)
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^bb2(%0: index):
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%1 = alloc(%0) : memref<?xf32>
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test.buffer_based in(%arg1: memref<?xf32>) out(%1: memref<?xf32>)
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cond_br %arg0, ^bb3, ^bb4
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^bb3:
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br ^bb5(%1 : memref<?xf32>)
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^bb4:
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br ^bb5(%1 : memref<?xf32>)
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^bb5(%2: memref<?xf32>):
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br ^bb6(%2 : memref<?xf32>)
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^bb6(%3: memref<?xf32>):
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br ^bb7(%3 : memref<?xf32>)
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^bb7(%4: memref<?xf32>):
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test.copy(%4, %arg2) : (memref<?xf32>, memref<?xf32>)
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return
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}
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// CHECK-NEXT: cond_br
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// CHECK: ^bb2
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// CHECK: ^bb2(%[[IDX:.*]]:{{.*}})
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// CHECK-NEXT: %[[ALLOC0:.*]] = alloc(%[[IDX]])
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// CHECK-NEXT: test.buffer_based
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// -----
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// Test Case:
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// bb0
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// / \
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// | bb1 <- Initial position of AllocOp
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// \ /
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// bb2
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// BufferHoisting expected behavior: It should move the existing AllocOp to
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// the entry block.
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// CHECK-LABEL: func @criticalEdge
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func @criticalEdge(%arg0: i1, %arg1: memref<2xf32>, %arg2: memref<2xf32>) {
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cond_br %arg0, ^bb1, ^bb2(%arg1 : memref<2xf32>)
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^bb1:
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%0 = alloc() : memref<2xf32>
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test.buffer_based in(%arg1: memref<2xf32>) out(%0: memref<2xf32>)
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br ^bb2(%0 : memref<2xf32>)
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^bb2(%1: memref<2xf32>):
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test.copy(%1, %arg2) : (memref<2xf32>, memref<2xf32>)
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return
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}
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// CHECK-NEXT: %[[ALLOC:.*]] = alloc()
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// CHECK-NEXT: cond_br
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// -----
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// Test Case:
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// bb0 <- Initial position of the first AllocOp
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// / \
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// bb1 bb2
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// \ /
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// bb3 <- Initial position of the second AllocOp
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// BufferHoisting expected behavior: It shouldn't move the AllocOps.
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// CHECK-LABEL: func @ifElse
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func @ifElse(%arg0: i1, %arg1: memref<2xf32>, %arg2: memref<2xf32>) {
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%0 = alloc() : memref<2xf32>
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test.buffer_based in(%arg1: memref<2xf32>) out(%0: memref<2xf32>)
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cond_br %arg0,
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^bb1(%arg1, %0 : memref<2xf32>, memref<2xf32>),
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^bb2(%0, %arg1 : memref<2xf32>, memref<2xf32>)
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^bb1(%1: memref<2xf32>, %2: memref<2xf32>):
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br ^bb3(%1, %2 : memref<2xf32>, memref<2xf32>)
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^bb2(%3: memref<2xf32>, %4: memref<2xf32>):
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br ^bb3(%3, %4 : memref<2xf32>, memref<2xf32>)
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^bb3(%5: memref<2xf32>, %6: memref<2xf32>):
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%7 = alloc() : memref<2xf32>
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test.buffer_based in(%7: memref<2xf32>) out(%7: memref<2xf32>)
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test.copy(%7, %arg2) : (memref<2xf32>, memref<2xf32>)
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return
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}
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// CHECK-NEXT: %[[ALLOC0:.*]] = alloc()
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// CHECK-NEXT: test.buffer_based
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// CHECK: br ^bb3
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// CHECK: br ^bb3
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// CHECK-NEXT: ^bb3
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// CHECK: %[[ALLOC1:.*]] = alloc()
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// CHECK-NEXT: test.buffer_based
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// CHECK: test.copy(%[[ALLOC1]]
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// CHECK-NEXT: return
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// -----
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// Test Case: No users for buffer in if-else CFG
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// bb0 <- Initial position of AllocOp
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// / \
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// bb1 bb2
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// \ /
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// bb3
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// BufferHoisting expected behavior: It shouldn't move the AllocOp.
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// CHECK-LABEL: func @ifElseNoUsers
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func @ifElseNoUsers(%arg0: i1, %arg1: memref<2xf32>, %arg2: memref<2xf32>) {
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%0 = alloc() : memref<2xf32>
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test.buffer_based in(%arg1: memref<2xf32>) out(%0: memref<2xf32>)
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cond_br %arg0,
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^bb1(%arg1, %0 : memref<2xf32>, memref<2xf32>),
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^bb2(%0, %arg1 : memref<2xf32>, memref<2xf32>)
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^bb1(%1: memref<2xf32>, %2: memref<2xf32>):
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br ^bb3(%1, %2 : memref<2xf32>, memref<2xf32>)
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^bb2(%3: memref<2xf32>, %4: memref<2xf32>):
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br ^bb3(%3, %4 : memref<2xf32>, memref<2xf32>)
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^bb3(%5: memref<2xf32>, %6: memref<2xf32>):
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test.copy(%arg1, %arg2) : (memref<2xf32>, memref<2xf32>)
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return
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}
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// CHECK-NEXT: %[[ALLOC0:.*]] = alloc()
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// CHECK-NEXT: test.buffer_based
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// -----
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// Test Case:
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// bb0 <- Initial position of the first AllocOp
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// / \
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// bb1 bb2
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// | / \
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// | bb3 bb4
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// \ \ /
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// \ /
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// bb5 <- Initial position of the second AllocOp
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// BufferHoisting expected behavior: AllocOps shouldn't be moved.
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// CHECK-LABEL: func @ifElseNested
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func @ifElseNested(%arg0: i1, %arg1: memref<2xf32>, %arg2: memref<2xf32>) {
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%0 = alloc() : memref<2xf32>
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test.buffer_based in(%arg1: memref<2xf32>) out(%0: memref<2xf32>)
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cond_br %arg0,
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^bb1(%arg1, %0 : memref<2xf32>, memref<2xf32>),
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^bb2(%0, %arg1 : memref<2xf32>, memref<2xf32>)
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^bb1(%1: memref<2xf32>, %2: memref<2xf32>):
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br ^bb5(%1, %2 : memref<2xf32>, memref<2xf32>)
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^bb2(%3: memref<2xf32>, %4: memref<2xf32>):
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cond_br %arg0, ^bb3(%3 : memref<2xf32>), ^bb4(%4 : memref<2xf32>)
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^bb3(%5: memref<2xf32>):
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br ^bb5(%5, %3 : memref<2xf32>, memref<2xf32>)
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^bb4(%6: memref<2xf32>):
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br ^bb5(%3, %6 : memref<2xf32>, memref<2xf32>)
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^bb5(%7: memref<2xf32>, %8: memref<2xf32>):
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%9 = alloc() : memref<2xf32>
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test.buffer_based in(%7: memref<2xf32>) out(%9: memref<2xf32>)
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test.copy(%9, %arg2) : (memref<2xf32>, memref<2xf32>)
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return
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}
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// CHECK-NEXT: %[[ALLOC0:.*]] = alloc()
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// CHECK-NEXT: test.buffer_based
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// CHECK: br ^bb5
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// CHECK: br ^bb5
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// CHECK: br ^bb5
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// CHECK-NEXT: ^bb5
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// CHECK: %[[ALLOC1:.*]] = alloc()
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// CHECK-NEXT: test.buffer_based
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// -----
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// Test Case: Dead operations in a single block.
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// BufferHoisting expected behavior: It shouldn't move the AllocOps.
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// CHECK-LABEL: func @redundantOperations
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func @redundantOperations(%arg0: memref<2xf32>) {
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%0 = alloc() : memref<2xf32>
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test.buffer_based in(%arg0: memref<2xf32>) out(%0: memref<2xf32>)
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%1 = alloc() : memref<2xf32>
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test.buffer_based in(%0: memref<2xf32>) out(%1: memref<2xf32>)
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return
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}
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// CHECK-NEXT: %[[ALLOC0:.*]] = alloc()
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// CHECK-NEXT: test.buffer_based
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// CHECK: %[[ALLOC1:.*]] = alloc()
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// CHECK-NEXT: test.buffer_based
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// -----
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// Test Case:
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// bb0
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// / \
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// Initial pos of the 1st AllocOp -> bb1 bb2 <- Initial pos of the 2nd AllocOp
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// \ /
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// bb3
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// BufferHoisting expected behavior: Both AllocOps should be moved to the
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// entry block.
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// CHECK-LABEL: func @moving_alloc_and_inserting_missing_dealloc
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func @moving_alloc_and_inserting_missing_dealloc(
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%cond: i1,
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%arg0: memref<2xf32>,
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%arg1: memref<2xf32>) {
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cond_br %cond, ^bb1, ^bb2
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^bb1:
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%0 = alloc() : memref<2xf32>
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test.buffer_based in(%arg0: memref<2xf32>) out(%0: memref<2xf32>)
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br ^exit(%0 : memref<2xf32>)
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^bb2:
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%1 = alloc() : memref<2xf32>
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test.buffer_based in(%arg0: memref<2xf32>) out(%1: memref<2xf32>)
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br ^exit(%1 : memref<2xf32>)
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^exit(%arg2: memref<2xf32>):
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test.copy(%arg2, %arg1) : (memref<2xf32>, memref<2xf32>)
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return
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}
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// CHECK-NEXT: %{{.*}} = alloc()
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// CHECK-NEXT: %{{.*}} = alloc()
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// CHECK-NEXT: cond_br
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// -----
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// Test Case: Invalid position of the DeallocOp. There is a user after
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// deallocation.
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// bb0
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// / \
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// bb1 bb2 <- Initial position of AllocOp
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// \ /
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// bb3
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// BufferHoisting expected behavior: It should move the AllocOp to the entry
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// block.
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// CHECK-LABEL: func @moving_invalid_dealloc_op_complex
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func @moving_invalid_dealloc_op_complex(
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%cond: i1,
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%arg0: memref<2xf32>,
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%arg1: memref<2xf32>) {
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cond_br %cond, ^bb1, ^bb2
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^bb1:
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br ^exit(%arg0 : memref<2xf32>)
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^bb2:
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%1 = alloc() : memref<2xf32>
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test.buffer_based in(%arg0: memref<2xf32>) out(%1: memref<2xf32>)
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dealloc %1 : memref<2xf32>
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br ^exit(%1 : memref<2xf32>)
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^exit(%arg2: memref<2xf32>):
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test.copy(%arg2, %arg1) : (memref<2xf32>, memref<2xf32>)
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return
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}
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// CHECK-NEXT: %{{.*}} = alloc()
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// CHECK-NEXT: cond_br
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// -----
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// Test Case: Nested regions - This test defines a BufferBasedOp inside the
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// region of a RegionBufferBasedOp.
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// BufferHoisting expected behavior: The AllocOp for the BufferBasedOp should
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// remain inside the region of the RegiobBufferBasedOp. The AllocOp of the
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// RegionBufferBasedOp should be moved to the entry block.
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// CHECK-LABEL: func @nested_regions_and_cond_branch
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func @nested_regions_and_cond_branch(
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%arg0: i1,
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%arg1: memref<2xf32>,
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%arg2: memref<2xf32>) {
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cond_br %arg0, ^bb1, ^bb2
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^bb1:
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br ^bb3(%arg1 : memref<2xf32>)
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^bb2:
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%0 = alloc() : memref<2xf32>
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test.region_buffer_based in(%arg1: memref<2xf32>) out(%0: memref<2xf32>) {
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^bb0(%gen1_arg0: f32, %gen1_arg1: f32):
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%1 = alloc() : memref<2xf32>
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test.buffer_based in(%arg1: memref<2xf32>) out(%1: memref<2xf32>)
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%tmp1 = exp %gen1_arg0 : f32
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test.region_yield %tmp1 : f32
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}
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br ^bb3(%0 : memref<2xf32>)
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^bb3(%1: memref<2xf32>):
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test.copy(%1, %arg2) : (memref<2xf32>, memref<2xf32>)
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return
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}
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// CHECK-NEXT: %[[ALLOC0:.*]] = alloc()
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// CHECK-NEXT: cond_br
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// CHECK: test.region_buffer_based
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// CHECK: %[[ALLOC1:.*]] = alloc()
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// CHECK-NEXT: test.buffer_based
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// -----
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// Test Case: nested region control flow
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// The alloc position of %1 does not need to be changed and flows through
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// both if branches until it is finally returned.
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// CHECK-LABEL: func @nested_region_control_flow
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func @nested_region_control_flow(
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%arg0 : index,
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%arg1 : index) -> memref<?x?xf32> {
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%0 = cmpi "eq", %arg0, %arg1 : index
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%1 = alloc(%arg0, %arg0) : memref<?x?xf32>
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%2 = scf.if %0 -> (memref<?x?xf32>) {
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scf.yield %1 : memref<?x?xf32>
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} else {
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%3 = alloc(%arg0, %arg1) : memref<?x?xf32>
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scf.yield %1 : memref<?x?xf32>
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}
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return %2 : memref<?x?xf32>
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}
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// CHECK: %[[ALLOC0:.*]] = alloc(%arg0, %arg0)
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// CHECK-NEXT: %{{.*}} = scf.if
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// CHECK: else
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// CHECK-NEXT: %[[ALLOC1:.*]] = alloc(%arg0, %arg1)
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// -----
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// Test Case: nested region control flow with a nested buffer allocation in a
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// divergent branch.
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// The alloc positions of %1 does not need to be changed. %3 is moved upwards.
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// CHECK-LABEL: func @nested_region_control_flow_div
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func @nested_region_control_flow_div(
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%arg0 : index,
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%arg1 : index) -> memref<?x?xf32> {
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%0 = cmpi "eq", %arg0, %arg1 : index
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%1 = alloc(%arg0, %arg0) : memref<?x?xf32>
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%2 = scf.if %0 -> (memref<?x?xf32>) {
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scf.yield %1 : memref<?x?xf32>
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} else {
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%3 = alloc(%arg0, %arg1) : memref<?x?xf32>
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scf.yield %3 : memref<?x?xf32>
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}
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return %2 : memref<?x?xf32>
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}
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// CHECK: %[[ALLOC0:.*]] = alloc(%arg0, %arg0)
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// CHECK-NEXT: %[[ALLOC1:.*]] = alloc(%arg0, %arg1)
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// CHECK-NEXT: %{{.*}} = scf.if
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// -----
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// Test Case: deeply nested region control flow with a nested buffer allocation
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// in a divergent branch.
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// The alloc position of %1 does not need to be changed. Allocs %4 and %5 are
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// moved upwards.
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// CHECK-LABEL: func @nested_region_control_flow_div_nested
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func @nested_region_control_flow_div_nested(
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%arg0 : index,
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%arg1 : index) -> memref<?x?xf32> {
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%0 = cmpi "eq", %arg0, %arg1 : index
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%1 = alloc(%arg0, %arg0) : memref<?x?xf32>
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%2 = scf.if %0 -> (memref<?x?xf32>) {
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%3 = scf.if %0 -> (memref<?x?xf32>) {
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scf.yield %1 : memref<?x?xf32>
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} else {
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%4 = alloc(%arg0, %arg1) : memref<?x?xf32>
|
|
scf.yield %4 : memref<?x?xf32>
|
|
}
|
|
scf.yield %3 : memref<?x?xf32>
|
|
} else {
|
|
%5 = alloc(%arg1, %arg1) : memref<?x?xf32>
|
|
scf.yield %5 : memref<?x?xf32>
|
|
}
|
|
return %2 : memref<?x?xf32>
|
|
}
|
|
// CHECK: %[[ALLOC0:.*]] = alloc(%arg0, %arg0)
|
|
// CHECK-NEXT: %[[ALLOC1:.*]] = alloc(%arg0, %arg1)
|
|
// CHECK-NEXT: %[[ALLOC2:.*]] = alloc(%arg1, %arg1)
|
|
// CHECK-NEXT: %{{.*}} = scf.if
|
|
|
|
// -----
|
|
|
|
// Test Case: nested region control flow within a region interface.
|
|
// The alloc positions of %0 does not need to be changed.
|
|
|
|
// CHECK-LABEL: func @inner_region_control_flow
|
|
func @inner_region_control_flow(%arg0 : index) -> memref<?x?xf32> {
|
|
%0 = alloc(%arg0, %arg0) : memref<?x?xf32>
|
|
%1 = test.region_if %0 : memref<?x?xf32> -> (memref<?x?xf32>) then {
|
|
^bb0(%arg1 : memref<?x?xf32>):
|
|
test.region_if_yield %arg1 : memref<?x?xf32>
|
|
} else {
|
|
^bb0(%arg1 : memref<?x?xf32>):
|
|
test.region_if_yield %arg1 : memref<?x?xf32>
|
|
} join {
|
|
^bb0(%arg1 : memref<?x?xf32>):
|
|
test.region_if_yield %arg1 : memref<?x?xf32>
|
|
}
|
|
return %1 : memref<?x?xf32>
|
|
}
|
|
|
|
// CHECK: %[[ALLOC0:.*]] = alloc(%arg0, %arg0)
|
|
// CHECK-NEXT: {{.*}} test.region_if
|
|
|
|
// -----
|
|
|
|
// Test Case: nested region control flow within a region interface including an
|
|
// allocation in a divergent branch.
|
|
// The alloc positions of %0 does not need to be changed. %2 is moved upwards.
|
|
|
|
// CHECK-LABEL: func @inner_region_control_flow_div
|
|
func @inner_region_control_flow_div(
|
|
%arg0 : index,
|
|
%arg1 : index) -> memref<?x?xf32> {
|
|
%0 = alloc(%arg0, %arg0) : memref<?x?xf32>
|
|
%1 = test.region_if %0 : memref<?x?xf32> -> (memref<?x?xf32>) then {
|
|
^bb0(%arg2 : memref<?x?xf32>):
|
|
test.region_if_yield %arg2 : memref<?x?xf32>
|
|
} else {
|
|
^bb0(%arg2 : memref<?x?xf32>):
|
|
%2 = alloc(%arg0, %arg1) : memref<?x?xf32>
|
|
test.region_if_yield %2 : memref<?x?xf32>
|
|
} join {
|
|
^bb0(%arg2 : memref<?x?xf32>):
|
|
test.region_if_yield %arg2 : memref<?x?xf32>
|
|
}
|
|
return %1 : memref<?x?xf32>
|
|
}
|
|
|
|
// CHECK: %[[ALLOC0:.*]] = alloc(%arg0, %arg0)
|
|
// CHECK-NEXT: %[[ALLOC1:.*]] = alloc(%arg0, %arg1)
|
|
// CHECK-NEXT: {{.*}} test.region_if
|
|
|
|
// -----
|
|
|
|
// Test Case: Alloca operations shouldn't be moved.
|
|
|
|
// CHECK-LABEL: func @condBranchAlloca
|
|
func @condBranchAlloca(%arg0: i1, %arg1: memref<2xf32>, %arg2: memref<2xf32>) {
|
|
cond_br %arg0, ^bb1, ^bb2
|
|
^bb1:
|
|
br ^bb3(%arg1 : memref<2xf32>)
|
|
^bb2:
|
|
%0 = alloca() : memref<2xf32>
|
|
test.buffer_based in(%arg1: memref<2xf32>) out(%0: memref<2xf32>)
|
|
br ^bb3(%0 : memref<2xf32>)
|
|
^bb3(%1: memref<2xf32>):
|
|
test.copy(%1, %arg2) : (memref<2xf32>, memref<2xf32>)
|
|
return
|
|
}
|
|
|
|
// CHECK-NEXT: cond_br
|
|
// CHECK: ^bb2
|
|
// CHECK: ^bb2
|
|
// CHECK-NEXT: %[[ALLOCA:.*]] = alloca()
|
|
// CHECK-NEXT: test.buffer_based
|
|
|
|
// -----
|
|
|
|
// Test Case: Alloca operations shouldn't be moved. The alloc operation also
|
|
// shouldn't be moved analogously to the ifElseNested test.
|
|
|
|
// CHECK-LABEL: func @ifElseNestedAlloca
|
|
func @ifElseNestedAlloca(
|
|
%arg0: i1,
|
|
%arg1: memref<2xf32>,
|
|
%arg2: memref<2xf32>) {
|
|
%0 = alloca() : memref<2xf32>
|
|
test.buffer_based in(%arg1: memref<2xf32>) out(%0: memref<2xf32>)
|
|
cond_br %arg0,
|
|
^bb1(%arg1, %0 : memref<2xf32>, memref<2xf32>),
|
|
^bb2(%0, %arg1 : memref<2xf32>, memref<2xf32>)
|
|
^bb1(%1: memref<2xf32>, %2: memref<2xf32>):
|
|
br ^bb5(%1, %2 : memref<2xf32>, memref<2xf32>)
|
|
^bb2(%3: memref<2xf32>, %4: memref<2xf32>):
|
|
cond_br %arg0, ^bb3(%3 : memref<2xf32>), ^bb4(%4 : memref<2xf32>)
|
|
^bb3(%5: memref<2xf32>):
|
|
br ^bb5(%5, %3 : memref<2xf32>, memref<2xf32>)
|
|
^bb4(%6: memref<2xf32>):
|
|
br ^bb5(%3, %6 : memref<2xf32>, memref<2xf32>)
|
|
^bb5(%7: memref<2xf32>, %8: memref<2xf32>):
|
|
%9 = alloc() : memref<2xf32>
|
|
test.buffer_based in(%7: memref<2xf32>) out(%9: memref<2xf32>)
|
|
test.copy(%9, %arg2) : (memref<2xf32>, memref<2xf32>)
|
|
return
|
|
}
|
|
|
|
// CHECK-NEXT: %[[ALLOCA:.*]] = alloca()
|
|
// CHECK-NEXT: test.buffer_based
|
|
// CHECK: ^bb5
|
|
// CHECK: ^bb5
|
|
// CHECK: ^bb5
|
|
// CHECK-NEXT: ^bb5
|
|
// CHECK-NEXT: %[[ALLOC:.*]] = alloc()
|
|
// CHECK-NEXT: test.buffer_based
|
|
|
|
// -----
|
|
|
|
// Test Case: Alloca operations shouldn't be moved. The alloc operation should
|
|
// be moved in the beginning analogous to the nestedRegionsAndCondBranch test.
|
|
|
|
// CHECK-LABEL: func @nestedRegionsAndCondBranchAlloca
|
|
func @nestedRegionsAndCondBranchAlloca(
|
|
%arg0: i1,
|
|
%arg1: memref<2xf32>,
|
|
%arg2: memref<2xf32>) {
|
|
cond_br %arg0, ^bb1, ^bb2
|
|
^bb1:
|
|
br ^bb3(%arg1 : memref<2xf32>)
|
|
^bb2:
|
|
%0 = alloc() : memref<2xf32>
|
|
test.region_buffer_based in(%arg1: memref<2xf32>) out(%0: memref<2xf32>) {
|
|
^bb0(%gen1_arg0: f32, %gen1_arg1: f32):
|
|
%1 = alloca() : memref<2xf32>
|
|
test.buffer_based in(%arg1: memref<2xf32>) out(%1: memref<2xf32>)
|
|
%tmp1 = exp %gen1_arg0 : f32
|
|
test.region_yield %tmp1 : f32
|
|
}
|
|
br ^bb3(%0 : memref<2xf32>)
|
|
^bb3(%1: memref<2xf32>):
|
|
test.copy(%1, %arg2) : (memref<2xf32>, memref<2xf32>)
|
|
return
|
|
}
|
|
// CHECK-NEXT: %[[ALLOC:.*]] = alloc()
|
|
// CHECK-NEXT: cond_br
|
|
// CHECK: test.region_buffer_based
|
|
// CHECK: %[[ALLOCA:.*]] = alloca()
|
|
// CHECK-NEXT: test.buffer_based
|
|
|
|
// -----
|
|
|
|
// Test Case: structured control-flow loop using a nested alloc.
|
|
// The alloc positions of %3 will be moved upwards.
|
|
|
|
// CHECK-LABEL: func @loop_alloc
|
|
func @loop_alloc(
|
|
%lb: index,
|
|
%ub: index,
|
|
%step: index,
|
|
%buf: memref<2xf32>,
|
|
%res: memref<2xf32>) {
|
|
%0 = alloc() : memref<2xf32>
|
|
%1 = scf.for %i = %lb to %ub step %step
|
|
iter_args(%iterBuf = %buf) -> memref<2xf32> {
|
|
%2 = cmpi "eq", %i, %ub : index
|
|
%3 = alloc() : memref<2xf32>
|
|
scf.yield %3 : memref<2xf32>
|
|
}
|
|
test.copy(%1, %res) : (memref<2xf32>, memref<2xf32>)
|
|
return
|
|
}
|
|
|
|
// CHECK: %[[ALLOC0:.*]] = alloc()
|
|
// CHECK-NEXT: {{.*}} scf.for
|
|
// CHECK: %[[ALLOC1:.*]] = alloc()
|
|
|
|
// -----
|
|
|
|
// Test Case: structured control-flow loop with a nested if operation using
|
|
// a deeply nested buffer allocation.
|
|
// The allocation %4 is not moved upwards.
|
|
|
|
// CHECK-LABEL: func @loop_nested_if_alloc
|
|
func @loop_nested_if_alloc(
|
|
%lb: index,
|
|
%ub: index,
|
|
%step: index,
|
|
%buf: memref<2xf32>) -> memref<2xf32> {
|
|
%0 = alloc() : memref<2xf32>
|
|
%1 = scf.for %i = %lb to %ub step %step
|
|
iter_args(%iterBuf = %buf) -> memref<2xf32> {
|
|
%2 = cmpi "eq", %i, %ub : index
|
|
%3 = scf.if %2 -> (memref<2xf32>) {
|
|
%4 = alloc() : memref<2xf32>
|
|
scf.yield %4 : memref<2xf32>
|
|
} else {
|
|
scf.yield %0 : memref<2xf32>
|
|
}
|
|
scf.yield %3 : memref<2xf32>
|
|
}
|
|
return %1 : memref<2xf32>
|
|
}
|
|
|
|
// CHECK: %[[ALLOC0:.*]] = alloc()
|
|
// CHECK-NEXT: {{.*}} scf.for
|
|
// CHECK: %[[ALLOC1:.*]] = alloc()
|
|
|
|
// -----
|
|
|
|
// Test Case: several nested structured control-flow loops with a deeply nested
|
|
// buffer allocation inside an if operation.
|
|
// Same behavior is an loop_nested_if_alloc: The allocs are not moved upwards.
|
|
|
|
// CHECK-LABEL: func @loop_nested_alloc
|
|
func @loop_nested_alloc(
|
|
%lb: index,
|
|
%ub: index,
|
|
%step: index,
|
|
%buf: memref<2xf32>,
|
|
%res: memref<2xf32>) {
|
|
%0 = alloc() : memref<2xf32>
|
|
%1 = scf.for %i = %lb to %ub step %step
|
|
iter_args(%iterBuf = %buf) -> memref<2xf32> {
|
|
%2 = scf.for %i2 = %lb to %ub step %step
|
|
iter_args(%iterBuf2 = %iterBuf) -> memref<2xf32> {
|
|
%3 = scf.for %i3 = %lb to %ub step %step
|
|
iter_args(%iterBuf3 = %iterBuf2) -> memref<2xf32> {
|
|
%4 = alloc() : memref<2xf32>
|
|
%5 = cmpi "eq", %i, %ub : index
|
|
%6 = scf.if %5 -> (memref<2xf32>) {
|
|
%7 = alloc() : memref<2xf32>
|
|
scf.yield %7 : memref<2xf32>
|
|
} else {
|
|
scf.yield %iterBuf3 : memref<2xf32>
|
|
}
|
|
scf.yield %6 : memref<2xf32>
|
|
}
|
|
scf.yield %3 : memref<2xf32>
|
|
}
|
|
scf.yield %2 : memref<2xf32>
|
|
}
|
|
test.copy(%1, %res) : (memref<2xf32>, memref<2xf32>)
|
|
return
|
|
}
|
|
|
|
// CHECK: %[[ALLOC0:.*]] = alloc()
|
|
// CHECK-NEXT: {{.*}} = scf.for
|
|
// CHECK-NEXT: {{.*}} = scf.for
|
|
// CHECK-NEXT: {{.*}} = scf.for
|
|
// CHECK-NEXT: %[[ALLOC1:.*]] = alloc()
|
|
// CHECK: %[[ALLOC2:.*]] = alloc()
|
|
|
|
// -----
|
|
|
|
// CHECK-LABEL: func @loop_nested_alloc_dyn_dependency
|
|
func @loop_nested_alloc_dyn_dependency(
|
|
%lb: index,
|
|
%ub: index,
|
|
%step: index,
|
|
%arg0: index,
|
|
%buf: memref<?xf32>,
|
|
%res: memref<?xf32>) {
|
|
%0 = alloc(%arg0) : memref<?xf32>
|
|
%1 = scf.for %i = %lb to %ub step %step
|
|
iter_args(%iterBuf = %buf) -> memref<?xf32> {
|
|
%2 = scf.for %i2 = %lb to %ub step %step
|
|
iter_args(%iterBuf2 = %iterBuf) -> memref<?xf32> {
|
|
%3 = scf.for %i3 = %lb to %ub step %step
|
|
iter_args(%iterBuf3 = %iterBuf2) -> memref<?xf32> {
|
|
%5 = cmpi "eq", %i, %ub : index
|
|
%6 = scf.if %5 -> (memref<?xf32>) {
|
|
%7 = alloc(%i3) : memref<?xf32>
|
|
scf.yield %7 : memref<?xf32>
|
|
} else {
|
|
scf.yield %iterBuf3 : memref<?xf32>
|
|
}
|
|
scf.yield %6 : memref<?xf32>
|
|
}
|
|
scf.yield %3 : memref<?xf32>
|
|
}
|
|
scf.yield %0 : memref<?xf32>
|
|
}
|
|
test.copy(%1, %res) : (memref<?xf32>, memref<?xf32>)
|
|
return
|
|
}
|
|
|
|
|
|
// CHECK: %[[ALLOC0:.*]] = alloc({{.*}})
|
|
// CHECK-NEXT: {{.*}} = scf.for
|
|
// CHECK-NEXT: {{.*}} = scf.for
|
|
// CHECK-NEXT: {{.*}} = scf.for
|
|
// CHECK: %[[ALLOC1:.*]] = alloc({{.*}})
|