/
canonicalize.mlir
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canonicalize.mlir
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// RUN: mlir-opt -split-input-file -allow-unregistered-dialect -canonicalize %s | FileCheck %s
// CHECK-LABEL: func @f
func @f(%arg0: tensor<2x3x4xf32>) -> tensor<?xindex> {
// CHECK: shape.const_shape [2, 3, 4] : tensor<?xindex>
%0 = shape.shape_of %arg0 : tensor<2x3x4xf32> -> tensor<?xindex>
return %0 : tensor<?xindex>
}
// -----
// Basic case.
// CHECK-LABEL: func @f
func @f() -> (!shape.shape, !shape.shape) {
// CHECK: shape.const_shape [2, 3] : !shape.shape
// CHECK: shape.const_shape [4, 5] : !shape.shape
%c2 = constant 2 : index
%0 = shape.const_shape [2, 3, 4, 5] : !shape.shape
%head, %tail = "shape.split_at"(%0, %c2) : (!shape.shape, index) -> (!shape.shape, !shape.shape)
return %head, %tail : !shape.shape, !shape.shape
}
// -----
// Negative split point.
// CHECK-LABEL: func @f
func @f() -> (!shape.shape, !shape.shape) {
// CHECK: shape.const_shape [2, 3, 4] : !shape.shape
// CHECK: shape.const_shape [5] : !shape.shape
%c-1 = constant -1 : index
%0 = shape.const_shape [2, 3, 4, 5] : !shape.shape
%head, %tail = "shape.split_at"(%0, %c-1) : (!shape.shape, index) -> (!shape.shape, !shape.shape)
return %head, %tail : !shape.shape, !shape.shape
}
// -----
// Out of range split point. No folding.
// CHECK-LABEL: func @f
func @f() -> (!shape.shape, !shape.shape) {
// CHECK: shape.split_at
%c5 = constant 5 : index
%0 = shape.const_shape [2, 3, 4, 5] : !shape.shape
%head, %tail = "shape.split_at"(%0, %c5) : (!shape.shape, index) -> (!shape.shape, !shape.shape)
return %head, %tail : !shape.shape, !shape.shape
}
// -----
// Basic case.
// CHECK-LABEL: func @f
func @f() -> !shape.shape {
// CHECK: shape.const_shape [7, 2] : !shape.shape
%0 = shape.const_shape [1, 2] : !shape.shape
%1 = shape.const_shape [7, 1] : !shape.shape
%2 = shape.broadcast %0, %1 : !shape.shape, !shape.shape -> !shape.shape
return %2 : !shape.shape
}
// -----
// Basic case including extent tensors.
// CHECK-LABEL: @broadcast
func @broadcast() -> tensor<?xindex> {
// CHECK: shape.const_shape [7, 2] : tensor<?xindex>
%0 = shape.const_shape [1, 2] : tensor<?xindex>
%1 = shape.const_shape [7, 1] : tensor<?xindex>
%2 = shape.broadcast %0, %1
: tensor<?xindex>, tensor<?xindex> -> tensor<?xindex>
return %2 : tensor<?xindex>
}
// -----
// Basic case including extent tensors.
// CHECK-LABEL: @broadcast
func @broadcast() -> !shape.shape {
// CHECK: shape.const_shape [7, 2] : !shape.shape
%0 = shape.const_shape [1, 2] : tensor<?xindex>
%1 = shape.const_shape [7, 1] : tensor<?xindex>
%2 = shape.broadcast %0, %1 : tensor<?xindex>, tensor<?xindex> -> !shape.shape
return %2 : !shape.shape
}
// -----
// Rhs is a scalar.
// CHECK-LABEL: func @f
func @f(%arg0 : !shape.shape) -> !shape.shape {
// CHECK: return %arg0
%0 = shape.const_shape [] : !shape.shape
%1 = shape.broadcast %arg0, %0 : !shape.shape, !shape.shape -> !shape.shape
return %1 : !shape.shape
}
// -----
// Lhs is a scalar.
// CHECK-LABEL: func @f
func @f(%arg0 : !shape.shape) -> !shape.shape {
// CHECK: return %arg0
%0 = shape.const_shape [] : !shape.shape
%1 = shape.broadcast %0, %arg0 : !shape.shape, !shape.shape -> !shape.shape
return %1 : !shape.shape
}
// -----
// Lhs is a scalar and rhs is constant.
// CHECK-LABEL: func @f
func @f() -> !shape.shape {
// CHECK: %[[CST:.*]] = shape.const_shape [1, 2, 3] : !shape.shape
// CHECK: return %[[CST]]
%0 = shape.const_shape [] : !shape.shape
%1 = shape.const_shape [1, 2, 3] : !shape.shape
%2 = shape.broadcast %0, %1 : !shape.shape, !shape.shape -> !shape.shape
return %2 : !shape.shape
}
// -----
// Incompatible shapes. No folding.
// CHECK-LABEL: func @f
func @f() -> !shape.shape {
// CHECK: shape.broadcast
%0 = shape.const_shape [2] : !shape.shape
%1 = shape.const_shape [7] : !shape.shape
%2 = shape.broadcast %0, %1 : !shape.shape, !shape.shape -> !shape.shape
return %2 : !shape.shape
}
// -----
// Dead code
// CHECK-LABEL: @broadcast
func @broadcast(%arg0 : !shape.shape, %arg1 : !shape.shape) {
// CHECK-NEXT: return
%0 = shape.broadcast %arg0, %arg1
: !shape.shape, !shape.shape -> !shape.shape
return
}
// -----
// Basic case.
// CHECK-LABEL: func @f
func @f() -> !shape.shape {
// CHECK: shape.const_shape [0, 1, 2, 3] : !shape.shape
%lhs = shape.const_shape [0, 1] : !shape.shape
%rhs = shape.const_shape [2, 3] : !shape.shape
%0 = shape.concat %lhs, %rhs
return %0 : !shape.shape
}
// -----
// Basic case.
// CHECK-LABEL: func @f
func @f() -> tensor<2xindex> {
// CHECK: constant dense<[0, 1]> : tensor<2xindex>
%cs = shape.const_shape [0, 1] : !shape.shape
%0 = shape.to_extent_tensor %cs : !shape.shape -> tensor<2xindex>
return %0 : tensor<2xindex>
}
// -----
// Basic case.
// CHECK-LABEL: func @f()
func @f() -> !shape.shape {
// CHECK: shape.const_shape [3, 5, 11] : !shape.shape
%e0 = constant 3 : index
%e1 = constant 5 : index
%e2 = constant 11 : index
%ret = shape.from_extents %e0, %e1, %e2 : index, index, index
return %ret : !shape.shape
}
// -----
// fold_const_size
// CHECK-LABEL: func @fold_const_size()
func @fold_const_size() -> !shape.shape {
// CHECK: shape.const_shape [3, 5] : !shape.shape
%e0 = shape.const_size 3
%e1 = shape.const_size 5
%ret = shape.from_extents %e0, %e1 : !shape.size, !shape.size
return %ret : !shape.shape
}
// -----
// CHECK-LABEL: func @no_fold
func @no_fold(%arg0: index) -> !shape.shape {
// CHECK-NOT: shape.const_shape
%e0 = constant 3 : index
%ret = shape.from_extents %e0, %arg0 : index, index
return %ret : !shape.shape
}
// -----
// Cast constant size to index and fold it away.
// CHECK-LABEL: func @const_size_to_index
func @const_size_to_index() -> index {
// CHECK-NOT: shape.index_cast
%cs = shape.const_size 123
// CHECK: constant 123 : index
%ci = shape.size_to_index %cs : !shape.size
return %ci : index
}
// -----
// Cast constant index to size and fold it away.
// CHECK-LABEL: func @const_index_to_size
func @const_index_to_size() -> !shape.size {
// CHECK-NOT: index_cast
%ci = constant 123 : index
// CHECK: shape.const_size 123
%cs = shape.index_to_size %ci
return %cs : !shape.size
}
// -----
// Cast constant index to size, then back, and fold it away.
// CHECK-LABEL: func @const_index_to_size_to_index
func @const_index_to_size_to_index() -> index {
// CHECK-NOT: shape.index_cast
%ci0 = constant 123 : index
%cs0 = shape.index_to_size %ci0
// CHECK: %[[CI:.*]] = constant 123 : index
// CHECK-NEXT: return %[[CI]] : index
%ci1 = shape.size_to_index %cs0 : !shape.size
return %ci1 : index
}
// -----
// No folding.
// CHECK-LABEL: func @nonfoldable_size_to_index
func @nonfoldable_size_to_index(%cs : !shape.size) -> index {
// CHECK: shape.size_to_index
%ci = shape.size_to_index %cs : !shape.size
return %ci : index
}
// -----
// No folding.
// CHECK-LABEL: func @nonfoldable_index_to_size
func @nonfoldable_index_to_size(%ci : index) -> !shape.size {
// CHECK: shape.index_to_size
%cs = shape.index_to_size %ci
return %cs : !shape.size
}
// -----
// Fold number of elements computation.
// CHECK-LABEL: func @num_elements
func @num_elements() -> !shape.size {
// CHECK-NOT: shape.const_shape
%shape = shape.const_shape [4, 5, 6] : !shape.shape
// CHECK-NOT: shape.num_elements
%num_elements = shape.num_elements %shape : !shape.shape -> !shape.size
// CHECK: %[[NUM:.*]] = shape.const_size 120
// CHECK-NEXT: return %[[NUM]] : !shape.size
return %num_elements : !shape.size
}
// -----
// No folding.
// CHECK-LABEL: func @nonfoldable_num_elements
func @nonfoldable_num_elements(%shape : !shape.shape) -> !shape.size {
// CHECK-NOT: shape.const_{{.*}}
%num_elements = shape.num_elements %shape : !shape.shape -> !shape.size
return %num_elements : !shape.size
}
// -----
// Basic folding.
// CHECK-LABEL: func @basic
func @basic() -> index {
// CHECK: constant 2 : index
%0 = shape.const_shape [0, 1, 2] : tensor<?xindex>
%c2 = constant 2 : index
%1 = shape.get_extent %0, %c2 : tensor<?xindex>, index -> index
return %1 : index
}
// -----
// Should not fold.
// CHECK-LABEL: func @out_of_bounds
func @out_of_bounds() -> index {
// CHECK: shape.const_shape
// CHECK: shape.get_extent
%0 = shape.const_shape [0, 1, 2] : tensor<?xindex>
%c3 = constant 3 : index
%1 = shape.get_extent %0, %c3 : tensor<?xindex>, index -> index
return %1 : index
}
// -----
// Should not fold.
// CHECK-LABEL: func @not_const
func @not_const(%arg0: tensor<?xindex>) -> index {
// CHECK: shape.get_extent
%c3 = constant 3 : index
%0 = shape.get_extent %arg0, %c3 : tensor<?xindex>, index -> index
return %0 : index
}
// -----
// Basic folding.
// CHECK-LABEL: func @basic
func @basic() -> !shape.size {
// CHECK: shape.const_size 2
%0 = shape.const_shape [0, 1, 2] : !shape.shape
%c2 = shape.const_size 2
%1 = shape.get_extent %0, %c2 : !shape.shape, !shape.size -> !shape.size
return %1 : !shape.size
}
// -----
// Should not fold.
// CHECK-LABEL: func @out_of_bounds
func @out_of_bounds() -> !shape.size {
// CHECK: shape.const_shape
// CHECK: shape.get_extent
%0 = shape.const_shape [0, 1, 2] : !shape.shape
%c3 = shape.const_size 3
%1 = shape.get_extent %0, %c3 : !shape.shape, !shape.size -> !shape.size
return %1 : !shape.size
}
// -----
// Should not fold.
// CHECK-LABEL: func @not_const
func @not_const(%arg0 : !shape.shape) -> !shape.size {
// CHECK: shape.get_extent
%c3 = shape.const_size 3
%0 = shape.get_extent %arg0, %c3 : !shape.shape, !shape.size -> !shape.size
return %0 : !shape.size
}
// -----
// cstr_eq with non-constant but known equal shapes can be removed.
// CHECK-LABEL: func @f
func @f(%arg0 : !shape.shape) {
// CHECK-NEXT: shape.const_witness true
// CHECK-NEXT: consume.witness
// CHECK-NEXT: return
%0 = shape.cstr_eq %arg0, %arg0, %arg0 : !shape.shape, !shape.shape, !shape.shape
"consume.witness"(%0) : (!shape.witness) -> ()
return
}
// -----
// cstr_eq with equal const_shapes can be folded
// CHECK-LABEL: func @f
func @f() {
// CHECK-NEXT: shape.const_witness true
// CHECK-NEXT: consume.witness
// CHECK-NEXT: return
%cs0 = shape.const_shape [0, 1] : !shape.shape
%cs1 = shape.const_shape [0, 1] : !shape.shape
%cs2 = shape.const_shape [0, 1] : !shape.shape
%0 = shape.cstr_eq %cs0, %cs1, %cs2 : !shape.shape, !shape.shape, !shape.shape
"consume.witness"(%0) : (!shape.witness) -> ()
return
}
// -----
// cstr_eq with unequal const_shapes cannot be folded
// CHECK-LABEL: func @f
func @f() {
// CHECK-NEXT: shape.const_shape
// CHECK-NEXT: shape.const_shape
// CHECK-NEXT: shape.cstr_eq
// CHECK-NEXT: consume.witness
// CHECK-NEXT: return
%cs0 = shape.const_shape [0, 1] : !shape.shape
%cs1 = shape.const_shape [3, 1] : !shape.shape
%0 = shape.cstr_eq %cs0, %cs1 : !shape.shape, !shape.shape
"consume.witness"(%0) : (!shape.witness) -> ()
return
}
// -----
// cstr_eq without const_shapes cannot be folded
// CHECK-LABEL: func @f
func @f(%arg0: !shape.shape, %arg1: !shape.shape) {
// CHECK-NEXT: shape.cstr_eq
// CHECK-NEXT: consume.witness
// CHECK-NEXT: return
%0 = shape.cstr_eq %arg0, %arg1 : !shape.shape, !shape.shape
"consume.witness"(%0) : (!shape.witness) -> ()
return
}
// -----
// cstr_require with constant can be folded
// CHECK-LABEL: func @cstr_require_fold
func @cstr_require_fold() {
// CHECK-NEXT: shape.const_witness true
// CHECK-NEXT: consume.witness
// CHECK-NEXT: return
%true = constant true
%0 = shape.cstr_require %true, "msg"
"consume.witness"(%0) : (!shape.witness) -> ()
return
}
// -----
// cstr_require without constant cannot be folded
// CHECK-LABEL: func @cstr_require_no_fold
func @cstr_require_no_fold(%arg0: i1) {
// CHECK-NEXT: shape.cstr_require
// CHECK-NEXT: consume.witness
// CHECK-NEXT: return
%0 = shape.cstr_require %arg0, "msg"
"consume.witness"(%0) : (!shape.witness) -> ()
return
}
// -----
// assuming_all with known passing witnesses can be folded
// CHECK-LABEL: func @f
func @f() {
// CHECK-NEXT: shape.const_witness true
// CHECK-NEXT: consume.witness
// CHECK-NEXT: return
%0 = shape.const_witness true
%1 = shape.const_witness true
%2 = shape.const_witness true
%3 = shape.assuming_all %0, %1, %2
"consume.witness"(%3) : (!shape.witness) -> ()
return
}
// -----
// assuming_all should not be removed if more than one witness is not
// statically passing
//
// Additionally check that the attribute is moved to the end as this op is
// commutative.
// CHECK-LABEL: func @f
func @f() {
// CHECK-NEXT: %[[UNKNOWN1:.*]] = "test.source"
// CHECK-NEXT: %[[UNKNOWN2:.*]] = "test.source"
// CHECK-NEXT: shape.assuming_all %[[UNKNOWN1]], %[[UNKNOWN2]]
// CHECK-NEXT: consume.witness
// CHECK-NEXT: return
%0 = shape.const_witness true
%1 = "test.source"() : () -> !shape.witness
%2 = "test.source"() : () -> !shape.witness
%3 = shape.assuming_all %0, %1, %2
"consume.witness"(%3) : (!shape.witness) -> ()
return
}
// -----
// any can be replaced with a constant input if it has one.
// CHECK-LABEL: func @f
func @f(%arg : !shape.shape) -> !shape.shape {
// CHECK-NEXT: %[[CS:.*]] = shape.const_shape
// CHECK-NEXT: return %[[CS]]
%0 = shape.const_shape [2, 3, 4] : !shape.shape
%1 = shape.any %0, %arg : !shape.shape, !shape.shape -> !shape.shape
return %1 : !shape.shape
}
// -----
// any can be replaced with a constant input if it has one.
// CHECK-LABEL: func @f
func @f(%arg : tensor<?xindex>) -> tensor<?xindex> {
// CHECK-NEXT: %[[CS:.*]] = shape.const_shape [2, 3, 4] : tensor<?xindex>
// CHECK-NEXT: return %[[CS]] : tensor<?xindex>
%0 = shape.const_shape [2, 3, 4] : tensor<?xindex>
%1 = shape.any %0, %arg : tensor<?xindex>, tensor<?xindex> -> tensor<?xindex>
return %1 : tensor<?xindex>
}
// -----
// Folding of any with partially constant operands is not yet implemented.
// CHECK-LABEL: func @f
func @f(%arg0 : !shape.shape, %arg1 : !shape.shape) -> !shape.shape {
// CHECK-NEXT: %[[CS:.*]] = shape.any
// CHECK-NEXT: return %[[CS]]
%1 = shape.any %arg0, %arg1 : !shape.shape, !shape.shape -> !shape.shape
return %1 : !shape.shape
}
// -----
// assuming with a known passing witness can be removed
// CHECK-LABEL: func @f
func @f() {
// CHECK-NEXT: source
// CHECK-NEXT: sink
// CHECK-NEXT: return
%0 = shape.const_witness true
%1 = shape.assuming %0 -> index {
%2 = "test.source"() : () -> (index)
shape.assuming_yield %2 : index
}
"test.sink"(%1) : (index) -> ()
return
}
// -----
// assuming without a known passing passing witness cannot be removed
// CHECK-LABEL: func @f
func @f() {
// CHECK-NEXT: test.source
// CHECK-NEXT: shape.assuming
// CHECK-NEXT: test.source
// CHECK-NEXT: shape.assuming_yield
// CHECK-NEXT: }
// CHECK-NEXT: test.sink
// CHECK-NEXT: return
%0 = "test.source"() : () -> (!shape.witness)
%1 = shape.assuming %0 -> index {
%2 = "test.source"() : () -> (index)
shape.assuming_yield %2 : index
}
"test.sink"(%1) : (index) -> ()
return
}
// -----
// Broadcastable with broadcastable constant shapes can be removed.
// CHECK-LABEL: func @f
func @f() {
// CHECK-NEXT: shape.const_witness true
// CHECK-NEXT: consume.witness
// CHECK-NEXT: return
%cs0 = shape.const_shape [3, 1] : !shape.shape
%cs1 = shape.const_shape [1, 5] : !shape.shape
%0 = shape.cstr_broadcastable %cs0, %cs1 : !shape.shape, !shape.shape
"consume.witness"(%0) : (!shape.witness) -> ()
return
}
// -----
// Broadcastable with non-broadcastable constant shapes is always false
// CHECK-LABEL: func @static_non_broadcastable
func @static_non_broadcastable() {
// CHECK-NEXT: shape.const_shape
// CHECK-NEXT: shape.const_shape
// CHECK-NEXT: shape.cstr_broadcastable
// CHECK-NEXT: consume.witness
// CHECK-NEXT: return
%cs0 = shape.const_shape [1, 3] : !shape.shape
%cs1 = shape.const_shape [1, 5] : !shape.shape
%0 = shape.cstr_broadcastable %cs0, %cs1 : !shape.shape, !shape.shape
"consume.witness"(%0) : (!shape.witness) -> ()
return
}
// -----
// Broadcastable without guaranteed broadcastable shapes cannot be removed.
// CHECK-LABEL: func @f
func @f(%arg0 : !shape.shape) {
// CHECK-NEXT: shape.const_shape
// CHECK-NEXT: shape.cstr_broadcastable
// CHECK-NEXT: consume.witness
// CHECK-NEXT: return
%cs0 = shape.const_shape [1, 3] : !shape.shape
%0 = shape.cstr_broadcastable %arg0, %cs0 : !shape.shape, !shape.shape
"consume.witness"(%0) : (!shape.witness) -> ()
return
}
// -----
// Broadcastable with non-constant but known equal shapes can be removed.
// CHECK-LABEL: func @f
func @f(%arg0 : !shape.shape) {
// CHECK-NEXT: shape.const_witness true
// CHECK-NEXT: consume.witness
// CHECK-NEXT: return
%0 = shape.cstr_broadcastable %arg0, %arg0 : !shape.shape, !shape.shape
"consume.witness"(%0) : (!shape.witness) -> ()
return
}
// -----
// Broadcastable canonicalization also works on extent tensors.
// CHECK-LABEL: func @broadcastable_on_extent_tensors
func @broadcastable_on_extent_tensors(%arg : tensor<?xindex>) {
// CHECK-NEXT: shape.const_witness true
// CHECK-NEXT: consume.witness
// CHECK-NEXT: return
%0 = shape.cstr_broadcastable %arg, %arg : tensor<?xindex>, tensor<?xindex>
"consume.witness"(%0) : (!shape.witness) -> ()
return
}
// -----
// Fold ternary broadcastable
// CHECK-LABEL: func @f
func @f() {
// CHECK-NEXT: shape.const_witness true
// CHECK-NEXT: consume.witness
// CHECK-NEXT: return
%cs0 = shape.const_shape [8, 1] : !shape.shape
%cs1 = shape.const_shape [1, 8] : !shape.shape
%cs2 = shape.const_shape [1, 1] : !shape.shape
%0 = shape.cstr_broadcastable %cs0, %cs1, %cs2 : !shape.shape, !shape.shape, !shape.shape
"consume.witness"(%0) : (!shape.witness) -> ()
return
}
// -----
// Fold ternary broadcastable with dynamic ranks
// CHECK-LABEL: func @f
func @f() {
// CHECK-NEXT: shape.const_witness true
// CHECK-NEXT: consume.witness
// CHECK-NEXT: return
%cs0 = shape.const_shape [8, 1] : !shape.shape
%cs1 = shape.const_shape [1, -1] : !shape.shape
%0 = shape.cstr_broadcastable %cs0, %cs0, %cs1 : !shape.shape, !shape.shape, !shape.shape
"consume.witness"(%0) : (!shape.witness) -> ()
return
}
// -----
// One scalar and one non-scalar and one unknown cannot be broadcasted at compile time
// CHECK-LABEL: func @f
func @f() {
// CHECK: shape.cstr_broadcastable
// CHECK-NEXT: consume.witness
// CHECK-NEXT: return
%cs0 = shape.const_shape [8, 1] : !shape.shape
%cs1 = shape.const_shape [1, 8] : !shape.shape
%cs2 = shape.const_shape [1, -1] : !shape.shape
%0 = shape.cstr_broadcastable %cs0, %cs1, %cs2 : !shape.shape, !shape.shape, !shape.shape
"consume.witness"(%0) : (!shape.witness) -> ()
return
}
// -----
// One scalar and two unknowns cannot be broadcasted at compile time
// CHECK-LABEL: func @f
func @f() {
// CHECK: shape.cstr_broadcastable
// CHECK-NEXT: consume.witness
// CHECK-NEXT: return
%cs0 = shape.const_shape [8, 1] : !shape.shape
%cs1 = shape.const_shape [1, -1] : !shape.shape
%cs2 = shape.const_shape [8, -1] : !shape.shape
%0 = shape.cstr_broadcastable %cs0, %cs1, %cs2 : !shape.shape, !shape.shape, !shape.shape
"consume.witness"(%0) : (!shape.witness) -> ()
return
}
// -----
// Broadcastable with scalars and a non-scalar can be constant folded
// CHECK-LABEL: func @f
func @f(%arg0 : !shape.shape) {
// CHECK-NEXT: shape.const_witness true
// CHECK-NEXT: consume.witness
// CHECK-NEXT: return
%cs0 = shape.const_shape [] : !shape.shape
%0 = shape.cstr_broadcastable %cs0, %cs0, %arg0 : !shape.shape, !shape.shape, !shape.shape
"consume.witness"(%0) : (!shape.witness) -> ()
return
}
// -----
// One scalar and one non-scalar and one unknown cannot be folded.
// CHECK-LABEL: func @f
func @f(%arg0 : !shape.shape) {
// CHECK: shape.cstr_broadcastable
// CHECK-NEXT: consume.witness
// CHECK-NEXT: return
%cs0 = shape.const_shape [] : !shape.shape
%cs1 = shape.const_shape [2] : !shape.shape
%0 = shape.cstr_broadcastable %cs0, %cs1, %arg0 : !shape.shape, !shape.shape, !shape.shape
"consume.witness"(%0) : (!shape.witness) -> ()
return
}
// -----
// Fold `rank` based on constant shape.
// CHECK-LABEL: @fold_rank
func @fold_rank() -> !shape.size {
// CHECK: %[[RESULT:.*]] = shape.const_size 5
// CHECK: return %[[RESULT]] : !shape.size
%shape = shape.const_shape [3, 4, 5, 6, 7] : !shape.shape
%rank = shape.rank %shape : !shape.shape -> !shape.size
return %rank : !shape.size
}
// -----
// Do not fold `rank` if shape is dynamic.
// CHECK-LABEL: @dont_fold_rank
// CHECK-SAME: (%[[SHAPE:.*]]: !shape.shape) -> !shape.size
func @dont_fold_rank(%shape : !shape.shape) -> !shape.size {
// CHECK: %[[RESULT:.*]] = shape.rank %[[SHAPE]]
// CHECK: return %[[RESULT]] : !shape.size
%rank = shape.rank %shape : !shape.shape -> !shape.size
return %rank : !shape.size
}
// -----
// Fold `rank` based on constant extent tensor.
// CHECK-LABEL: @fold_rank
func @fold_rank() -> index {
// CHECK: %[[RESULT:.*]] = constant 5 : index
// CHECK: return %[[RESULT]] : index
%shape = shape.const_shape [3, 4, 5, 6, 7] : tensor<?xindex>
%rank = shape.rank %shape : tensor<?xindex> -> index
return %rank : index
}
// -----
// Do not fold `rank` for non-constant extent tensors.
// CHECK-LABEL: @dont_fold_rank
// CHECK-SAME: (%[[SHAPE:.*]]: tensor<?xindex>) -> index
func @dont_fold_rank(%shape : tensor<?xindex>) -> index {
// CHECK: %[[RESULT:.*]] = shape.rank %[[SHAPE]] : tensor<?xindex> -> index
// CHECK: return %[[RESULT]] : index
%rank = shape.rank %shape : tensor<?xindex> -> index
return %rank : index
}
// -----
// Canonicalize `rank` when shape is derived from ranked tensor.
// CHECK-LABEL: @canonicalize_rank
func @canonicalize_rank(%arg : tensor<1x2x?xf32>) -> index {
// CHECK: %[[RESULT:.*]] = constant 3 : index
// CHECK: return %[[RESULT]] : index
%shape = shape.shape_of %arg : tensor<1x2x?xf32> -> tensor<?xindex>
%rank = shape.rank %shape : tensor<?xindex> -> index
return %rank : index
}
// -----
// Canonicalize `rank` when shape is derived from ranked tensor.
// CHECK-LABEL: @canonicalize_rank
func @canonicalize_rank_size(%arg : tensor<1x2x?xf32>) -> !shape.size {
// CHECK: %[[RESULT:.*]] = shape.const_size 3
// CHECK: return %[[RESULT]] : !shape.size
%shape = shape.shape_of %arg : tensor<1x2x?xf32> -> !shape.shape
%rank = shape.rank %shape : !shape.shape -> !shape.size
return %rank : !shape.size
}
// -----
// Do not canonicalize `rank` when shape is derived from unranked tensor.
// CHECK-LABEL: @dont_canonicalize_rank
// CHECK-SAME: (%[[ARG:.*]]: tensor<*xf32>) -> index
func @dont_canonicalize_rank(%arg : tensor<*xf32>) -> index {
// CHECK: %[[SHAPE:.*]] = shape.shape_of %[[ARG]] : tensor<*xf32> -> tensor<?xindex>
// CHECK: %[[SIZE:.*]] = shape.rank %[[SHAPE]]
// CHECK: return %[[SIZE]] : index
%shape = shape.shape_of %arg : tensor<*xf32> -> tensor<?xindex>
%rank = shape.rank %shape : tensor<?xindex> -> index
return %rank : index
}
// -----
// Canonicalize redundant conversion from `index` to `size` and back.
// CHECK-LABEL: @index_to_size_to_index
// CHECK-SAME: (%[[IDX:.*]]: index) -> index
func @index_to_size_to_index(%index : index) -> index {
// CHECK: return %[[IDX]] : index
%size = shape.index_to_size %index
%result = shape.size_to_index %size : !shape.size
return %result : index
}
// -----
// Canonicalize redundant conversion from `size` to `index` and back.
// CHECK-LABEL: @size_to_index_to_size
// CHECK-SAME: (%[[SIZE:.*]]: !shape.size) -> !shape.size
func @size_to_index_to_size(%size : !shape.size) -> !shape.size {
// CHECK: return %[[SIZE]] : !shape.size
%idx = shape.size_to_index %size : !shape.size
%result = shape.index_to_size %idx
return %result : !shape.size
}
// -----
// Canonicalize scalar cstr_broadcastable checks
// CHECK-LABEL: @cstr_broadcastable_scalar
func @cstr_broadcastable_scalar(%arg0 : tensor<?xf32>) {
// CHECK-NEXT: shape.const_witness true
// CHECK-NEXT: consume.witness
// CHECK-NEXT: return
%0 = shape.const_shape [] : !shape.shape
%1 = shape.shape_of %arg0 : tensor<?xf32> -> tensor<?xindex>
%2 = shape.cstr_broadcastable %0, %1 : !shape.shape, tensor<?xindex>
"consume.witness"(%2) : (!shape.witness) -> ()
return
}
// -----
// Do not canonicalize cstr_broadcastable checks with 2 unknowns
// CHECK-LABEL: @cstr_broadcastable_unknown
func @cstr_broadcastable_unknown(%arg0 : tensor<?xf32>, %arg1 : tensor<?xf32>) {
// CHECK-NEXT: shape.shape_of %arg0
// CHECK-NEXT: shape.shape_of %arg1
// CHECK-NEXT: shape.cstr_broadcastable
// CHECK-NEXT: consume.witness
// CHECK-NEXT: return
%0 = shape.shape_of %arg0 : tensor<?xf32> -> tensor<?xindex>
%1 = shape.shape_of %arg1 : tensor<?xf32> -> tensor<?xindex>
%2 = shape.cstr_broadcastable %0, %1 : tensor<?xindex>, tensor<?xindex>
"consume.witness"(%2) : (!shape.witness) -> ()
return
}
// -----
// Scalars are safe to broadcast to unranked sizes.
// CHECK-LABEL: @cstr_broadcastable_scalar_unranked
func @cstr_broadcastable_scalar_unranked(%arg0 : tensor<*xf32>, %arg1 : tensor<index>) {
// CHECK-NEXT: shape.const_witness true
// CHECK-NEXT: consume.witness
// CHECK-NEXT: return
%0 = shape.shape_of %arg1 : tensor<index> -> tensor<?xindex>
%1 = shape.shape_of %arg0 : tensor<*xf32> -> tensor<?xindex>
%2 = shape.cstr_broadcastable %0, %1 : tensor<?xindex>, tensor<?xindex>
"consume.witness"(%2) : (!shape.witness) -> ()
return
}
// -----
// Fold `shape_eq` for equal and constant shapes.
// CHECK-LABEL: @shape_eq_fold_1
func @shape_eq_fold_1() -> i1 {
// CHECK: %[[RESULT:.*]] = constant true
// CHECK: return %[[RESULT]] : i1
%a = shape.const_shape [1, 2, 3] : !shape.shape
%b = shape.const_shape [1, 2, 3] : tensor<?xindex>
%c = shape.const_shape [1, 2, 3] : tensor<?xindex>
%result = shape.shape_eq %a, %b, %c : !shape.shape, tensor<?xindex>, tensor<?xindex>
return %result : i1
}
// -----
// Fold `shape_eq` for different but constant shapes of same length.
// CHECK-LABEL: @shape_eq_fold_0
func @shape_eq_fold_0() -> i1 {
// CHECK: %[[RESULT:.*]] = constant false
// CHECK: return %[[RESULT]] : i1
%a = shape.const_shape [1, 2, 3] : tensor<?xindex>
%b = shape.const_shape [4, 5, 6] : tensor<?xindex>
%c = shape.const_shape [4, 5, 6] : tensor<?xindex>
%result = shape.shape_eq %a, %b, %c : tensor<?xindex>, tensor<?xindex>, tensor<?xindex>
return %result : i1
}
// -----
// Fold `shape_eq` for different but constant shapes of different length.
// CHECK-LABEL: @shape_eq_fold_0
func @shape_eq_fold_0() -> i1 {
// CHECK: %[[RESULT:.*]] = constant false
// CHECK: return %[[RESULT]] : i1
%a = shape.const_shape [1, 2, 3, 4, 5, 6] : !shape.shape
%b = shape.const_shape [1, 2, 3] : !shape.shape
%result = shape.shape_eq %a, %b : !shape.shape, !shape.shape
return %result : i1
}
// -----
// Do not fold `shape_eq` for non-constant different shapes.
// CHECK-LABEL: @shape_eq_do_not_fold
// CHECK-SAME: (%[[A:.*]]: !shape.shape) -> i1
func @shape_eq_do_not_fold(%a : !shape.shape) -> i1 {
// CHECK: %[[B:.*]] = shape.const_shape [4, 5, 6]
// CHECK: %[[RESULT:.*]] = shape.shape_eq %[[A]], %[[B]] : !shape.shape, !shape.shape
// CHECK: return %[[RESULT]] : i1
%b = shape.const_shape [4, 5, 6] : !shape.shape
%result = shape.shape_eq %a, %b : !shape.shape, !shape.shape
return %result : i1
}
// -----
// Fold `mul` for constant sizes.
// CHECK-LABEL: @fold_mul_size
func @fold_mul_size() -> !shape.size {
// CHECK: %[[RESULT:.*]] = shape.const_size 6
// CHECK: return %[[RESULT]] : !shape.size
%c2 = shape.const_size 2
%c3 = shape.const_size 3
%result = shape.mul %c2, %c3 : !shape.size, !shape.size -> !shape.size
return %result : !shape.size
}
// -----
// Fold `mul` for constant indices.
// CHECK-LABEL: @fold_mul_index
func @fold_mul_index() -> index {
// CHECK: %[[RESULT:.*]] = constant 6 : index
// CHECK: return %[[RESULT]] : index
%c2 = constant 2 : index
%c3 = constant 3 : index
%result = shape.mul %c2, %c3 : index, index -> index
return %result : index
}
// -----
// Fold `mul` for mixed constants.
// CHECK-LABEL: @fold_mul_mixed
func @fold_mul_mixed() -> !shape.size {
// CHECK: %[[RESULT:.*]] = shape.const_size 6
// CHECK: return %[[RESULT]] : !shape.size
%c2 = shape.const_size 2
%c3 = constant 3 : index
%result = shape.mul %c2, %c3 : !shape.size, index -> !shape.size
return %result : !shape.size
}
// -----
// Fold `div` for constant sizes.
// CHECK-LABEL: @fold_div_size
func @fold_div_size() -> !shape.size {
// CHECK: %[[RESULT:.*]] = shape.const_size 3
// CHECK: return %[[RESULT]] : !shape.size
%c2 = shape.const_size 10
%c3 = shape.const_size 3
%result = shape.div %c2, %c3 : !shape.size, !shape.size -> !shape.size
return %result : !shape.size
}
// -----
// Fold `div` for constant indices.
// CHECK-LABEL: @fold_div_index
func @fold_div_index() -> index {
// CHECK: %[[RESULT:.*]] = constant 2 : index
// CHECK: return %[[RESULT]] : index
%c2 = constant 10 : index
%c3 = constant 4 : index
%result = shape.div %c2, %c3 : index, index -> index
return %result : index
}
// -----
// Fold `div` for constant indices and lhs is negative.
// CHECK-LABEL: @fold_div_index_neg_lhs
func @fold_div_index_neg_lhs() -> index {
// CHECK: %[[RESULT:.*]] = constant -3 : index
// CHECK: return %[[RESULT]] : index
%c2 = constant -10 : index
%c3 = constant 4 : index
%result = shape.div %c2, %c3 : index, index -> index
return %result : index
}
// -----
// Fold `div` for constant indices and rhs is negative.
// CHECK-LABEL: @fold_div_index_neg_rhs
func @fold_div_index_neg_rhs() -> index {
// CHECK: %[[RESULT:.*]] = constant -3 : index
// CHECK: return %[[RESULT]] : index
%c2 = constant 10 : index
%c3 = constant -4 : index
%result = shape.div %c2, %c3 : index, index -> index