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[mlir][vector] Update tests for xfer permutation lowering (1/N) #123076

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Jan 20, 2025
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[mlir][vector] Update tests for xfer permutation lowering (1/N) #123076

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150 changes: 77 additions & 73 deletions mlir/test/Dialect/Vector/vector-transfer-permutation-lowering.mlir
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Original file line number Diff line number Diff line change
Expand Up @@ -13,42 +13,43 @@

// CHECK-LABEL: func.func @xfer_write_transposing_permutation_map
// CHECK-SAME: %[[VEC:.*]]: vector<4x8xi16>,
// CHECK-SAME: %[[MEM:.*]]: memref<2x2x8x4xi16>) {
// CHECK-SAME: %[[MEM:.*]]: memref<2x2x8x4xi16>
// CHECK: %[[TR:.*]] = vector.transpose %[[VEC]], [1, 0] : vector<4x8xi16> to vector<8x4xi16>
// CHECK: vector.transfer_write
// CHECK-NOT: permutation_map
// CHECK-SAME: %[[TR]], %[[MEM]]{{.*}} {in_bounds = [true, true]} : vector<8x4xi16>, memref<2x2x8x4xi16>
func.func @xfer_write_transposing_permutation_map(
%vec: vector<4x8xi16>,
%mem: memref<2x2x8x4xi16>) {
%mem: memref<2x2x8x4xi16>,
%idx: index) {

%c0 = arith.constant 0 : index
vector.transfer_write %vec, %mem[%c0, %c0, %c0, %c0] {
vector.transfer_write %vec, %mem[%idx, %idx, %idx, %idx] {
in_bounds = [true, true],
permutation_map = affine_map<(d0, d1, d2, d3) -> (d3, d2)>
} : vector<4x8xi16>, memref<2x2x8x4xi16>

return
}

// Even with out-of-bounds, it is safe to apply this pattern
// Even with out-of-bounds accesses, it is safe to apply this pattern

// CHECK-LABEL: func.func @xfer_write_transposing_permutation_map_out_of_bounds
// CHECK-SAME: %[[VEC:.*]]: vector<4x8xi16>,
// CHECK-SAME: %[[MEM:.*]]: memref<2x2x?x?xi16>) {
// CHECK: %[[C0:.*]] = arith.constant 0 : index
// CHECK-SAME: %[[MEM:.*]]: memref<2x2x?x?xi16>,
// CHECK-SAME: %[[IDX:.*]]: index) {
// CHECK: %[[TR:.*]] = vector.transpose %[[VEC]], [1, 0] : vector<4x8xi16> to vector<8x4xi16>
// Expect the in_bounds attribute to be preserved. Since we don't print it when
// all flags are "false", it should not appear in the output.
// CHECK-NOT: in_bounds
// CHECK: vector.transfer_write
// CHECK-NOT: permutation_map
// CHECK-SAME: %[[TR]], %[[MEM]][%[[C0]], %[[C0]], %[[C0]], %[[C0]]] : vector<8x4xi16>, memref<2x2x?x?xi16>
// CHECK-SAME: %[[TR]], %[[MEM]][%[[IDX]], %[[IDX]], %[[IDX]], %[[IDX]]] : vector<8x4xi16>, memref<2x2x?x?xi16>
func.func @xfer_write_transposing_permutation_map_out_of_bounds(
%vec: vector<4x8xi16>,
%mem: memref<2x2x?x?xi16>) {
%mem: memref<2x2x?x?xi16>,
%idx: index) {

%c0 = arith.constant 0 : index
vector.transfer_write %vec, %mem[%c0, %c0, %c0, %c0] {
vector.transfer_write %vec, %mem[%idx, %idx, %idx, %idx] {
in_bounds = [false, false],
permutation_map = affine_map<(d0, d1, d2, d3) -> (d3, d2)>
} : vector<4x8xi16>, memref<2x2x?x?xi16>
Expand All @@ -59,18 +60,19 @@ func.func @xfer_write_transposing_permutation_map_out_of_bounds(
// CHECK-LABEL: func.func @xfer_write_transposing_permutation_map_with_mask_scalable
// CHECK-SAME: %[[VEC:.*]]: vector<4x[8]xi16>,
// CHECK-SAME: %[[MEM:.*]]: memref<2x2x?x4xi16>,
// CHECK-SAME: %[[MASK:.*]]: vector<[8]x4xi1>) {
// CHECK-SAME: %[[MASK:.*]]: vector<[8]x4xi1>
// CHECK: %[[TR:.*]] = vector.transpose %[[VEC]], [1, 0] : vector<4x[8]xi16> to vector<[8]x4xi16>
// CHECK: vector.transfer_write
// CHECK-NOT: permutation_map
// CHECK-SAME: %[[TR]], %[[MEM]]{{.*}}, %[[MASK]] {in_bounds = [true, true]} : vector<[8]x4xi16>, memref<2x2x?x4xi16>
func.func @xfer_write_transposing_permutation_map_with_mask_scalable(
%vec: vector<4x[8]xi16>,
%mem: memref<2x2x?x4xi16>,
%mask: vector<[8]x4xi1>) {
%mask: vector<[8]x4xi1>,
%idx: index) {

%c0 = arith.constant 0 : index
vector.transfer_write %vec, %mem[%c0, %c0, %c0, %c0], %mask {
vector.transfer_write %vec, %mem[%idx, %idx, %idx, %idx], %mask {
in_bounds = [true, true],
permutation_map = affine_map<(d0, d1, d2, d3) -> (d3, d2)>
} : vector<4x[8]xi16>, memref<2x2x?x4xi16>
Expand All @@ -79,16 +81,18 @@ func.func @xfer_write_transposing_permutation_map_with_mask_scalable(
}

// Masked version is not supported

// CHECK-LABEL: func.func @xfer_write_transposing_permutation_map_masked
// CHECK-NOT: vector.transpose
func.func @xfer_write_transposing_permutation_map_masked(
%vec: vector<4x8xi16>,
%mem: memref<2x2x8x4xi16>,
%mask: vector<8x4xi1>) {
%mask: vector<8x4xi1>,
%idx: index) {

%c0 = arith.constant 0 : index
vector.mask %mask {
vector.transfer_write %vec, %mem[%c0, %c0, %c0, %c0] {
vector.transfer_write %vec, %mem[%idx, %idx, %idx, %idx] {
in_bounds = [true, true],
permutation_map = affine_map<(d0, d1, d2, d3) -> (d3, d2)>
} : vector<4x8xi16>, memref<2x2x8x4xi16>
Expand Down Expand Up @@ -128,7 +132,8 @@ func.func @xfer_write_non_transposing_permutation_map(
return
}

// Even with out-of-bounds, it is safe to apply this pattern
// Even with out-of-bounds accesses, it is safe to apply this pattern

// CHECK-LABEL: func.func @xfer_write_non_transposing_permutation_map_with_mask_out_of_bounds(
// CHECK-SAME: %[[MEM:.*]]: memref<?x?xf32>,
// CHECK-SAME: %[[VEC:.*]]: vector<7xf32>,
Expand Down Expand Up @@ -157,8 +162,7 @@ func.func @xfer_write_non_transposing_permutation_map_with_mask_out_of_bounds(
// CHECK: func.func @permutation_with_mask_xfer_write_scalable(
// CHECK-SAME: %[[VEC:.*]]: vector<4x[8]xi16>,
// CHECK-SAME: %[[MEM:.*]]: memref<1x4x?x1xi16>,
// CHECK-SAME: %[[MASK:.*]]: vector<4x[8]xi1>) {
// CHECK: %[[C0:.*]] = arith.constant 0 : index
// CHECK-SAME: %[[MASK:.*]]: vector<4x[8]xi1>
// CHECK: %[[BC_1:.*]] = vector.broadcast %[[VEC]] : vector<4x[8]xi16> to vector<1x4x[8]xi16>
// CHECK: %[[BC_2:.*]] = vector.broadcast %[[MASK]] : vector<4x[8]xi1> to vector<1x4x[8]xi1>
// CHECK: %[[TRANSPOSE_1:.*]] = vector.transpose %[[BC_2]], [1, 2, 0] : vector<1x4x[8]xi1> to vector<4x[8]x1xi1>
Expand All @@ -167,18 +171,19 @@ func.func @xfer_write_non_transposing_permutation_map_with_mask_out_of_bounds(
func.func @permutation_with_mask_xfer_write_scalable(
%vec: vector<4x[8]xi16>,
%mem: memref<1x4x?x1xi16>,
%mask: vector<4x[8]xi1>){
%mask: vector<4x[8]xi1>,
%idx: index){

%c0 = arith.constant 0 : index
vector.transfer_write %vec, %mem[%c0, %c0, %c0, %c0], %mask {
vector.transfer_write %vec, %mem[%idx, %idx, %idx, %idx], %mask {
in_bounds = [true, true],
permutation_map = affine_map<(d0, d1, d2, d3) -> (d1, d2)>
} : vector<4x[8]xi16>, memref<1x4x?x1xi16>

return
}

// transfer_write in MaskOp case not supported.
// Masked version is not supported

// CHECK-LABEL: func @masked_permutation_xfer_write_fixed_width
// CHECK-SAME: %[[DEST:.*]]: tensor<?x?xf32>,
// CHECK-SAME: %[[VEC:.*]]: vector<16xf32>,
Expand All @@ -204,18 +209,19 @@ func.func @masked_permutation_xfer_write_fixed_width(
// CHECK-LABEL: func.func @masked_permutation_xfer_write_scalable(
// CHECK-SAME: %[[VEC:.*]]: vector<4x[8]xi16>,
// CHECK-SAME: %[[DEST:.*]]: tensor<?x?x?x?xf32>,
// CHECK-SAME: %[[MASK:.*]]: vector<4x[8]xi1>)
// CHECK-SAME: %[[MASK:.*]]: vector<4x[8]xi1>
// CHECK-SAME: -> tensor<?x?x?x?xf32> {
// CHECK-NOT: vector.transpose
// CHECK: vector.mask %[[MASK]] { vector.transfer_write %[[VEC]], %[[DEST]]{{.*}} : vector<4x[8]xi16>, tensor<?x?x?x?xf32> } : vector<4x[8]xi1> -> tensor<?x?x?x?xf32>
func.func @masked_permutation_xfer_write_scalable(
%vec: vector<4x[8]xi16>,
%dest: tensor<?x?x?x?xf32>,
%mask: vector<4x[8]xi1>) -> tensor<?x?x?x?xf32> {
%mask: vector<4x[8]xi1>,
%idx: index) -> tensor<?x?x?x?xf32> {

%c0 = arith.constant 0 : index
%res = vector.mask %mask {
vector.transfer_write %vec, %dest[%c0, %c0, %c0, %c0] {
vector.transfer_write %vec, %dest[%idx, %idx, %idx, %idx] {
in_bounds = [true, true],
permutation_map = affine_map<(d0, d1, d2, d3) -> (d1, d2)>
} : vector<4x[8]xi16>, tensor<?x?x?x?xf32>
Expand All @@ -224,22 +230,23 @@ func.func @masked_permutation_xfer_write_scalable(
return %res : tensor<?x?x?x?xf32>
}

// transfer_write in MaskOp case not supported.
// Masked version is not supported

// CHECK-LABEL: func @masked_non_permutation_xfer_write_fixed_width
// CHECK-SAME: %[[DEST:.*]]: tensor<?x?x?x?xf32>
// CHECK-SAME: %[[VEC:.*]]: vector<14x8x16xf32>
// CHECK-SAME: %[[IDX:.*]]: index) -> tensor<?x?x?x?xf32>
// CHECK-SAME: %[[DIM:.*]]: index, %[[IDX:.*]]: index) -> tensor<?x?x?x?xf32>
// CHECK-NOT: vector.broadcast
// CHECK: vector.mask %0 { vector.transfer_write %[[VEC]], %[[DEST]]{{.*}} : vector<14x8x16xf32>, tensor<?x?x?x?xf32> } : vector<14x8x16xi1> -> tensor<?x?x?x?xf32>
func.func @masked_non_permutation_xfer_write_fixed_width(
%dest : tensor<?x?x?x?xf32>,
%vec : vector<14x8x16xf32>,
%dim : index) -> tensor<?x?x?x?xf32> {
%dim : index,
%idx: index) -> tensor<?x?x?x?xf32> {

%c0 = arith.constant 0 : index
%mask = vector.create_mask %dim, %dim, %dim : vector<14x8x16xi1>
%res = vector.mask %mask {
vector.transfer_write %vec, %dest[%c0, %c0, %c0, %c0] {
vector.transfer_write %vec, %dest[%idx, %idx, %idx, %idx] {
in_bounds = [false, false, true],
permutation_map = affine_map<(d0, d1, d2, d3) -> (d0, d1, d3)>
} : vector<14x8x16xf32>, tensor<?x?x?x?xf32>
Expand All @@ -259,25 +266,23 @@ func.func @masked_non_permutation_xfer_write_fixed_width(

// CHECK-LABEL: func.func @permutation_with_mask_xfer_read_fixed_width(
// CHECK-SAME: %[[MEM:.*]]: memref<?x?xf32>,
// CHECK-SAME: %[[IDX_1:.*]]: index,
// CHECK-SAME: %[[IDX_2:.*]]: index) -> vector<8x4x2xf32> {
// CHECK: %[[C0:.*]] = arith.constant 0 : index
// CHECK-SAME: %[[DIM_1:.*]]: index, %[[DIM_2:.*]]: index, %[[IDX:.*]]: index) -> vector<8x4x2xf32> {
// CHECK: %[[PASS_THROUGH:.*]] = arith.constant 0.000000e+00 : f32
// CHECK: %[[MASK:.*]] = vector.create_mask %[[IDX_2]], %[[IDX_1]] : vector<2x4xi1>
// CHECK: %[[T_READ:.*]] = vector.transfer_read %[[MEM]]{{\[}}%[[C0]], %[[C0]]], %[[PASS_THROUGH]], %[[MASK]] {in_bounds = [true, true]} : memref<?x?xf32>, vector<2x4xf32>
// CHECK: %[[MASK:.*]] = vector.create_mask %[[DIM_2]], %[[DIM_1]] : vector<2x4xi1>
// CHECK: %[[T_READ:.*]] = vector.transfer_read %[[MEM]]{{\[}}%[[IDX]], %[[IDX]]], %[[PASS_THROUGH]], %[[MASK]] {in_bounds = [true, true]} : memref<?x?xf32>, vector<2x4xf32>
// CHECK: %[[BCAST:.*]] = vector.broadcast %[[T_READ]] : vector<2x4xf32> to vector<8x2x4xf32>
// CHECK: %[[TRANSPOSE:.*]] = vector.transpose %[[BCAST]], [0, 2, 1] : vector<8x2x4xf32> to vector<8x4x2xf32>
// CHECK: return %[[TRANSPOSE]] : vector<8x4x2xf32>
func.func @permutation_with_mask_xfer_read_fixed_width(
%mem: memref<?x?xf32>,
%dim_1: index,
%dim_2: index) -> (vector<8x4x2xf32>) {
%dim_2: index,
%idx: index) -> (vector<8x4x2xf32>) {

%c0 = arith.constant 0 : index
%cst_0 = arith.constant 0.000000e+00 : f32
%pad = arith.constant 0.000000e+00 : f32

%mask = vector.create_mask %dim_2, %dim_1 : vector<2x4xi1>
%res = vector.transfer_read %mem[%c0, %c0], %cst_0, %mask {
%res = vector.transfer_read %mem[%idx, %idx], %pad, %mask {
in_bounds = [true, true, true],
permutation_map = affine_map<(d0, d1) -> (0, d1, d0)>
} : memref<?x?xf32>, vector<8x4x2xf32>
Expand All @@ -287,46 +292,45 @@ func.func @permutation_with_mask_xfer_read_fixed_width(

// CHECK-LABEL: func.func @permutation_with_mask_xfer_read_scalable(
// CHECK-SAME: %[[MEM:.*]]: memref<?x?xf32>,
// CHECK-SAME: %[[IDX_1:.*]]: index,
// CHECK-SAME: %[[IDX_2:.*]]: index) -> vector<8x[4]x2xf32> {
// CHECK: %[[C0:.*]] = arith.constant 0 : index
// CHECK: %[[PASS_THROUGH:.*]] = arith.constant 0.000000e+00 : f32
// CHECK: %[[MASK:.*]] = vector.create_mask %[[IDX_2]], %[[IDX_1]] : vector<2x[4]xi1>
// CHECK: %[[T_READ:.*]] = vector.transfer_read %[[MEM]]{{\[}}%[[C0]], %[[C0]]], %[[PASS_THROUGH]], %[[MASK]] {in_bounds = [true, true]} : memref<?x?xf32>, vector<2x[4]xf32>
// CHECK-SAME: %[[DIM_1:.*]]: index, %[[DIM_2:.*]]: index, %[[IDX:.*]]: index) -> vector<8x[4]x2xf32> {
// CHECK: %[[PAD:.*]] = arith.constant 0.000000e+00 : f32
// CHECK: %[[MASK:.*]] = vector.create_mask %[[DIM_2]], %[[DIM_1]] : vector<2x[4]xi1>
// CHECK: %[[T_READ:.*]] = vector.transfer_read %[[MEM]]{{\[}}%[[IDX]], %[[IDX]]], %[[PAD]], %[[MASK]] {in_bounds = [true, true]} : memref<?x?xf32>, vector<2x[4]xf32>
// CHECK: %[[BCAST:.*]] = vector.broadcast %[[T_READ]] : vector<2x[4]xf32> to vector<8x2x[4]xf32>
// CHECK: %[[TRANSPOSE:.*]] = vector.transpose %[[BCAST]], [0, 2, 1] : vector<8x2x[4]xf32> to vector<8x[4]x2xf32>
// CHECK: return %[[TRANSPOSE]] : vector<8x[4]x2xf32>
func.func @permutation_with_mask_xfer_read_scalable(
%mem: memref<?x?xf32>,
%dim_1: index,
%dim_2: index) -> (vector<8x[4]x2xf32>) {
%dim_2: index,
%idx: index) -> (vector<8x[4]x2xf32>) {

%c0 = arith.constant 0 : index
%cst_0 = arith.constant 0.000000e+00 : f32
%pad = arith.constant 0.000000e+00 : f32

%mask = vector.create_mask %dim_2, %dim_1 : vector<2x[4]xi1>
%res = vector.transfer_read %mem[%c0, %c0], %cst_0, %mask {
%res = vector.transfer_read %mem[%idx, %idx], %pad, %mask {
in_bounds = [true, true, true],
permutation_map = affine_map<(d0, d1) -> (0, d1, d0)>
} : memref<?x?xf32>, vector<8x[4]x2xf32>

return %res : vector<8x[4]x2xf32>
}

// transfer_read in MaskOp case not supported.
// Masked version is not supported

// CHECK-LABEL: func @masked_permutation_xfer_read_fixed_width
// CHECK-SAME: %[[DEST:.*]]: tensor<?x1xf32>,
// CHECK-SAME: %[[MASK:.*]]: vector<4x1xi1>
// CHECK-NOT: vector.transpose
// CHECK: vector.mask %[[MASK]] { vector.transfer_read %[[DEST]]{{.*}}: tensor<?x1xf32>, vector<1x4x4xf32> } : vector<4x1xi1> -> vector<1x4x4xf32>
func.func @masked_permutation_xfer_read_fixed_width(
%dest: tensor<?x1xf32>,
%mask : vector<4x1xi1>) {
%mask : vector<4x1xi1>,
%idx: index) {

%cst = arith.constant 0.000000e+00 : f32
%c0 = arith.constant 0 : index
%pad = arith.constant 0.000000e+00 : f32
%3 = vector.mask %mask {
vector.transfer_read %dest[%c0, %c0], %cst {
vector.transfer_read %dest[%idx, %idx], %pad {
permutation_map = affine_map<(d0, d1) -> (d1, 0, d0)>
} : tensor<?x1xf32>, vector<1x4x4xf32>
} : vector<4x1xi1> -> vector<1x4x4xf32>
Expand All @@ -337,18 +341,18 @@ func.func @masked_permutation_xfer_read_fixed_width(

// CHECK-LABEL: func.func @masked_permutation_xfer_read_scalable(
// CHECK-SAME: %[[DEST:.*]]: tensor<?x?xf32>,
// CHECK-SAME: %[[MASK:.*]]: vector<2x[4]xi1>) -> vector<8x[4]x2xf32> {
// CHECK-SAME: %[[MASK:.*]]: vector<2x[4]xi1>
// CHECK-NOT: vector.transpose
// CHECK: %[[T_READ:.*]] = vector.mask %[[MASK]] { vector.transfer_read %[[DEST]]{{.*}} : tensor<?x?xf32>, vector<8x[4]x2xf32> } : vector<2x[4]xi1> -> vector<8x[4]x2xf32>
func.func @masked_permutation_xfer_read_scalable(
%dest: tensor<?x?xf32>,
%mask : vector<2x[4]xi1>) -> vector<8x[4]x2xf32> {
%mask : vector<2x[4]xi1>,
%idx: index) -> vector<8x[4]x2xf32> {

%c0 = arith.constant 0 : index
%cst_0 = arith.constant 0.000000e+00 : f32
%pad = arith.constant 0.000000e+00 : f32

%res = vector.mask %mask {
vector.transfer_read %dest[%c0, %c0], %cst_0 {
vector.transfer_read %dest[%idx, %idx], %pad {
in_bounds = [true, true, true],
permutation_map = affine_map<(d0, d1) -> (0, d1, d0)>
} : tensor<?x?xf32>, vector<8x[4]x2xf32>
Expand Down Expand Up @@ -377,41 +381,41 @@ module attributes {transform.with_named_sequence} {

// CHECK: #[[MAP:.*]] = affine_map<(d0, d1, d2, d3) -> (d1, 0, d3)>
// CHECK: func.func @transfer_read_reduce_rank_scalable(
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NIT: This line deserves a CHECK-LABEL.

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Noticed it as well for permutation_with_mask_xfer_write_scalable.

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Addressing this in #123237. Alongside other improvements :)

// CHECK-SAME: %[[MEM:.*]]: memref<?x?x?x?xf32>) -> vector<8x[4]x2x3xf32> {
// CHECK: %[[C0:.*]] = arith.constant 0 : index
// CHECK: %[[T_READ:.*]] = vector.transfer_read %[[MEM]][%[[C0]], %[[C0]], %[[C0]], %[[C0]]]{{.*}} permutation_map = #[[MAP]]} : memref<?x?x?x?xf32>, vector<[4]x2x3xf32>
// CHECK-SAME: %[[MEM:.*]]: memref<?x?x?x?xf32>, %[[IDX:.*]]: index) -> vector<8x[4]x2x3xf32> {
// CHECK: %[[T_READ:.*]] = vector.transfer_read %[[MEM]][%[[IDX]], %[[IDX]], %[[IDX]], %[[IDX]]]{{.*}} permutation_map = #[[MAP]]} : memref<?x?x?x?xf32>, vector<[4]x2x3xf32>
// CHECK: %[[BC:.*]] = vector.broadcast %[[T_READ]] : vector<[4]x2x3xf32> to vector<8x[4]x2x3xf32>
// CHECK: return %[[BC]] : vector<8x[4]x2x3xf32>
func.func @transfer_read_reduce_rank_scalable(
%mem: memref<?x?x?x?xf32>) -> vector<8x[4]x2x3xf32> {
%mem: memref<?x?x?x?xf32>, %idx: index) -> vector<8x[4]x2x3xf32> {

%c0 = arith.constant 0 : index
%cst_0 = arith.constant 0.000000e+00 : f32
%pad = arith.constant 0.000000e+00 : f32

%res = vector.transfer_read %mem[%c0, %c0, %c0, %c0], %cst_0 {
%res = vector.transfer_read %mem[%idx, %idx, %idx, %idx], %pad {
in_bounds = [true, true, true, true],
permutation_map = affine_map<(d0, d1, d2, d3) -> (0, d1, 0, d3)>
} : memref<?x?x?x?xf32>, vector<8x[4]x2x3xf32>

return %res : vector<8x[4]x2x3xf32>
}

// Masked case not supported.
// Masked version is not supported

// CHECK-LABEL: func.func @masked_transfer_read_reduce_rank(
// CHECK-SAME: %[[MEM:.*]]: memref<?x?x?x?xf32>,
// CHECK-SAME: %[[DIM:.*]]: index) -> vector<8x[4]x2x3xf32> {
// CHECK-SAME: %[[DIM:.*]]: index,
// CHECK-SAME: %[[IDX:.*]]: index) -> vector<8x[4]x2x3xf32> {
// CHECK-NOT: vector.broadcast
// CHECK: %[[MASK:.*]] = vector.mask %0 { vector.transfer_read %[[MEM]]{{.*}} : memref<?x?x?x?xf32>, vector<8x[4]x2x3xf32> } : vector<[4]x3xi1> -> vector<8x[4]x2x3xf32>
func.func @masked_transfer_read_reduce_rank(
%mem: memref<?x?x?x?xf32>,
%dim: index) -> vector<8x[4]x2x3xf32> {
%dim: index,
%idx: index) -> vector<8x[4]x2x3xf32> {

%c0 = arith.constant 0 : index
%cst_0 = arith.constant 0.000000e+00 : f32
%pad = arith.constant 0.000000e+00 : f32
%mask = vector.create_mask %dim, %dim: vector<[4]x3xi1>

%res = vector.mask %mask {
vector.transfer_read %mem[%c0, %c0, %c0, %c0], %cst_0 {
vector.transfer_read %mem[%idx, %idx, %idx, %idx], %pad {
in_bounds = [true, true, true, true],
permutation_map = affine_map<(d0, d1, d2, d3) -> (0, d1, 0, d3)>
} : memref<?x?x?x?xf32>, vector<8x[4]x2x3xf32>
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