[Mlir-commits] [mlir] [mlir][vector] Refactor vector-transfer-flatten.mlir (nfc) (3/n) (PR #95745)
Andrzej Warzyński
llvmlistbot at llvm.org
Sun Jul 21 10:41:59 PDT 2024
https://github.com/banach-space updated https://github.com/llvm/llvm-project/pull/95745
>From 2b99b7cb58b8da45708833dba4810bffb542b19b Mon Sep 17 00:00:00 2001
From: Andrzej Warzynski <andrzej.warzynski at arm.com>
Date: Sun, 16 Jun 2024 13:44:12 +0100
Subject: [PATCH 1/3] [mlir][vector] Refactor vector-transfer-flatten.mlir
(nfc) (3/n)
The main goal of this and subsequent PRs is to unify and categorize
tests in:
* vector-transfer-flatten.mlir
This should make it easier to identify the edge cases being tested (and
how they differ), remove duplicates and to add tests for scalable
vectors.
The main contributions of this PR:
1. Refactor `@transfer_read_flattenable_with_dynamic_dims_and_indices`,
i.e. move it near other tests for xfer_read, unify variable names to
match other xfer_read tests, highlight what makes this a positive
test to better contrast it with
`@transfer_write_dims_mismatch_non_zero_indices_trailing_dynamic_dim`
2. Similar changes for
`@transfer_write_flattenable_with_dynamic_dims_and_indices`.
Depends on https://github.com/llvm/llvm-project/pull/95743 and https://github.com/llvm/llvm-project/pull/95744
**Only review the top top commit**
---
.../Vector/vector-transfer-flatten.mlir | 124 ++++++++++--------
1 file changed, 70 insertions(+), 54 deletions(-)
diff --git a/mlir/test/Dialect/Vector/vector-transfer-flatten.mlir b/mlir/test/Dialect/Vector/vector-transfer-flatten.mlir
index 303f841e8a828..3ffc189b097ba 100644
--- a/mlir/test/Dialect/Vector/vector-transfer-flatten.mlir
+++ b/mlir/test/Dialect/Vector/vector-transfer-flatten.mlir
@@ -131,10 +131,42 @@ func.func @transfer_read_dims_mismatch_non_contiguous_non_zero_indices(
// -----
+/// The leading dynamic shapes don't affect whether this example is flattenable
+/// or not as those dynamic shapes are not candidates for flattening anyway.
+
+func.func @transfer_read_leading_dynamic_dims(
+ %arg : memref<?x?x8x4xi8, strided<[?, 32, 4, 1], offset: ?>>,
+ %idx_1 : index,
+ %idx_2 : index) -> vector<8x4xi8> {
+
+ %c0_i8 = arith.constant 0 : i8
+ %c0 = arith.constant 0 : index
+ %result = vector.transfer_read %arg[%idx_1, %idx_2, %c0, %c0], %c0_i8 {in_bounds = [true, true]} : memref<?x?x8x4xi8, strided<[?, 32, 4, 1], offset: ?>>, vector<8x4xi8>
+ return %result : vector<8x4xi8>
+}
+
+// CHECK-LABEL: func @transfer_read_leading_dynamic_dims
+// CHECK-SAME: %[[ARG0:.+]]: memref<?x?x8x4xi8, {{.+}}>, %[[ARG1:.+]]: index, %[[ARG2:.+]]: index
+// CHECK: %[[C0_I8:.+]] = arith.constant 0 : i8
+// CHECK: %[[C0:.+]] = arith.constant 0 : index
+// CHECK: %[[COLLAPSED:.+]] = memref.collapse_shape %[[ARG0]] {{\[}}[0], [1], [2, 3]{{\]}}
+// CHECK-SAME: : memref<?x?x8x4xi8, {{.+}}> into memref<?x?x32xi8, {{.+}}>
+// CHECK: %[[VEC1D:.+]] = vector.transfer_read %[[COLLAPSED]]
+// CHECK-SAME: [%[[ARG1]], %[[ARG2]], %[[C0]]], %[[C0_I8]]
+// CHECK-SAME: {in_bounds = [true]}
+// CHECK-SAME: : memref<?x?x32xi8, {{.+}}>, vector<32xi8>
+// CHECK: %[[VEC2D:.+]] = vector.shape_cast %[[VEC1D]] : vector<32xi8> to vector<8x4xi8>
+// CHECK: return %[[VEC2D]] : vector<8x4xi8>
+
+// CHECK-128B-LABEL: func @transfer_read_leading_dynamic_dims
+// CHECK-128B: memref.collapse_shape
+
+// -----
+
// The input memref has a dynamic trailing shape and hence is not flattened.
// TODO: This case could be supported via memref.dim
-func.func @transfer_read_dims_mismatch_non_zero_indices_dynamic_shapes(
+func.func @transfer_read_dims_mismatch_non_zero_indices_trailing_dynamic_dim(
%idx_1: index,
%idx_2: index,
%m_in: memref<1x?x4x6xi32>) -> vector<1x2x6xi32> {
@@ -146,11 +178,11 @@ func.func @transfer_read_dims_mismatch_non_zero_indices_dynamic_shapes(
return %v : vector<1x2x6xi32>
}
-// CHECK-LABEL: func.func @transfer_read_dims_mismatch_non_zero_indices_dynamic_shapes(
+// CHECK-LABEL: func.func @transfer_read_dims_mismatch_non_zero_indices_trailing_dynamic_dim
// CHECK-NOT: memref.collapse_shape
// CHECK-NOT: vector.shape_cast
-// CHECK-128B-LABEL: func @transfer_read_dims_mismatch_non_zero_indices_dynamic_shapes(
+// CHECK-128B-LABEL: func @transfer_read_dims_mismatch_non_zero_indices_trailing_dynamic_dim
// CHECK-128B-NOT: memref.collapse_shape
// -----
@@ -345,10 +377,40 @@ func.func @transfer_write_dims_mismatch_non_contiguous_non_zero_indices(
// -----
+// The leading dynamic shapes don't affect whether this example is flattenable
+// or not as those dynamic shapes are not candidates for flattening anyway.
+
+func.func @transfer_write_leading_dynamic_dims(
+ %vec : vector<8x4xi8>,
+ %arg : memref<?x?x8x4xi8, strided<[?, 32, 4, 1], offset: ?>>,
+ %idx_1 : index,
+ %idx_2 : index) {
+
+ %c0 = arith.constant 0 : index
+ vector.transfer_write %vec, %arg[%idx_1, %idx_2, %c0, %c0] {in_bounds = [true, true]} : vector<8x4xi8>, memref<?x?x8x4xi8, strided<[?, 32, 4, 1], offset: ?>>
+ return
+}
+
+// CHECK-LABEL: func @transfer_write_leading_dynamic_dims
+// CHECK-SAME: %[[ARG0:.+]]: vector<8x4xi8>, %[[ARG1:.+]]: memref<?x?x8x4xi8, {{.+}}>, %[[ARG2:.+]]: index, %[[ARG3:.+]]: index
+// CHECK: %[[C0:.+]] = arith.constant 0 : index
+// CHECK: %[[COLLAPSED:.+]] = memref.collapse_shape %[[ARG1]] {{\[}}[0], [1], [2, 3]{{\]}}
+// CHECK-SAME: : memref<?x?x8x4xi8, {{.+}}> into memref<?x?x32xi8, {{.+}}>
+// CHECK: %[[VEC1D:.+]] = vector.shape_cast %[[ARG0]] : vector<8x4xi8> to vector<32xi8>
+// CHECK: vector.transfer_write %[[VEC1D]], %[[COLLAPSED]]
+// CHECK-SAME: [%[[ARG2]], %[[ARG3]], %[[C0]]]
+// CHECK-SAME: {in_bounds = [true]}
+// CHECK-SAME: : vector<32xi8>, memref<?x?x32xi8, {{.+}}>
+
+// CHECK-128B-LABEL: func @transfer_write_leading_dynamic_dims
+// CHECK-128B: memref.collapse_shape
+
+// -----
+
// The input memref has a dynamic trailing shape and hence is not flattened.
// TODO: This case could be supported via memref.dim
-func.func @transfer_write_dims_mismatch_non_zero_indices_dynamic_shapes(
+func.func @transfer_write_dims_mismatch_non_zero_indices_trailing_dynamic_dim(
%idx_1: index,
%idx_2: index,
%vec : vector<1x2x6xi32>,
@@ -361,11 +423,11 @@ func.func @transfer_write_dims_mismatch_non_zero_indices_dynamic_shapes(
return
}
-// CHECK-LABEL: func.func @transfer_write_dims_mismatch_non_zero_indices_dynamic_shapes(
+// CHECK-LABEL: func.func @transfer_write_dims_mismatch_non_zero_indices_trailing_dynamic_dim(
// CHECK-NOT: memref.collapse_shape
// CHECK-NOT: vector.shape_cast
-// CHECK-128B-LABEL: func @transfer_write_dims_mismatch_non_zero_indices_dynamic_shapes(
+// CHECK-128B-LABEL: func @transfer_write_dims_mismatch_non_zero_indices_trailing_dynamic_dim(
// CHECK-128B-NOT: memref.collapse_shape
// -----
@@ -434,56 +496,10 @@ func.func @transfer_write_non_contiguous_src(
// -----
///----------------------------------------------------------------------------------------
-/// TODO: Categorize + re-format
+/// [Pattern: DropUnitDimFromElementwiseOps]
+/// TODO: Move to a dedicated file - there's no "flattening" in the following tests
///----------------------------------------------------------------------------------------
-func.func @transfer_read_flattenable_with_dynamic_dims_and_indices(%arg0 : memref<?x?x8x4xi8, strided<[?, 32, 4, 1], offset: ?>>, %arg1 : index, %arg2 : index) -> vector<8x4xi8> {
- %c0_i8 = arith.constant 0 : i8
- %c0 = arith.constant 0 : index
- %result = vector.transfer_read %arg0[%arg1, %arg2, %c0, %c0], %c0_i8 {in_bounds = [true, true]} : memref<?x?x8x4xi8, strided<[?, 32, 4, 1], offset: ?>>, vector<8x4xi8>
- return %result : vector<8x4xi8>
-}
-
-// CHECK-LABEL: func @transfer_read_flattenable_with_dynamic_dims_and_indices
-// CHECK-SAME: %[[ARG0:.+]]: memref<?x?x8x4xi8, {{.+}}>, %[[ARG1:.+]]: index, %[[ARG2:.+]]: index
-// CHECK: %[[C0_I8:.+]] = arith.constant 0 : i8
-// CHECK: %[[C0:.+]] = arith.constant 0 : index
-// CHECK: %[[COLLAPSED:.+]] = memref.collapse_shape %[[ARG0]] {{\[}}[0], [1], [2, 3]{{\]}}
-// CHECK-SAME: : memref<?x?x8x4xi8, {{.+}}> into memref<?x?x32xi8, {{.+}}>
-// CHECK: %[[VEC1D:.+]] = vector.transfer_read %[[COLLAPSED]]
-// CHECK-SAME: [%[[ARG1]], %[[ARG2]], %[[C0]]], %[[C0_I8]]
-// CHECK-SAME: {in_bounds = [true]}
-// CHECK-SAME: : memref<?x?x32xi8, {{.+}}>, vector<32xi8>
-// CHECK: %[[VEC2D:.+]] = vector.shape_cast %[[VEC1D]] : vector<32xi8> to vector<8x4xi8>
-// CHECK: return %[[VEC2D]] : vector<8x4xi8>
-
-// CHECK-128B-LABEL: func @transfer_read_flattenable_with_dynamic_dims_and_indices(
-// CHECK-128B: memref.collapse_shape
-
-// -----
-
-func.func @transfer_write_flattenable_with_dynamic_dims_and_indices(%vec : vector<8x4xi8>, %dst : memref<?x?x8x4xi8, strided<[?, 32, 4, 1], offset: ?>>, %arg1 : index, %arg2 : index) {
- %c0 = arith.constant 0 : index
- vector.transfer_write %vec, %dst[%arg1, %arg2, %c0, %c0] {in_bounds = [true, true]} : vector<8x4xi8>, memref<?x?x8x4xi8, strided<[?, 32, 4, 1], offset: ?>>
- return
-}
-
-// CHECK-LABEL: func @transfer_write_flattenable_with_dynamic_dims_and_indices
-// CHECK-SAME: %[[ARG0:.+]]: vector<8x4xi8>, %[[ARG1:.+]]: memref<?x?x8x4xi8, {{.+}}>, %[[ARG2:.+]]: index, %[[ARG3:.+]]: index
-// CHECK: %[[C0:.+]] = arith.constant 0 : index
-// CHECK: %[[COLLAPSED:.+]] = memref.collapse_shape %[[ARG1]] {{\[}}[0], [1], [2, 3]{{\]}}
-// CHECK-SAME: : memref<?x?x8x4xi8, {{.+}}> into memref<?x?x32xi8, {{.+}}>
-// CHECK: %[[VEC1D:.+]] = vector.shape_cast %[[ARG0]] : vector<8x4xi8> to vector<32xi8>
-// CHECK: vector.transfer_write %[[VEC1D]], %[[COLLAPSED]]
-// CHECK-SAME: [%[[ARG2]], %[[ARG3]], %[[C0]]]
-// CHECK-SAME: {in_bounds = [true]}
-// CHECK-SAME: : vector<32xi8>, memref<?x?x32xi8, {{.+}}>
-
-// CHECK-128B-LABEL: func @transfer_write_flattenable_with_dynamic_dims_and_indices(
-// CHECK-128B: memref.collapse_shape
-
-// -----
-
func.func @fold_unit_dim_add_basic(%arg0 : vector<1x8xi32>) -> vector<1x8xi32> {
%add = arith.addi %arg0, %arg0 : vector<1x8xi32>
return %add : vector<1x8xi32>
>From f2a5ed4ea0a84da1a2e3d347523b7caceb11330c Mon Sep 17 00:00:00 2001
From: Andrzej Warzynski <andrzej.warzynski at arm.com>
Date: Fri, 21 Jun 2024 13:04:00 +0100
Subject: [PATCH 2/3] fixup! [mlir][vector] Refactor
vector-transfer-flatten.mlir (nfc) (3/n)
Minor updates - addressing PR comments
---
.../Dialect/Vector/vector-transfer-flatten.mlir | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/mlir/test/Dialect/Vector/vector-transfer-flatten.mlir b/mlir/test/Dialect/Vector/vector-transfer-flatten.mlir
index 3ffc189b097ba..a0a1fc39fcaca 100644
--- a/mlir/test/Dialect/Vector/vector-transfer-flatten.mlir
+++ b/mlir/test/Dialect/Vector/vector-transfer-flatten.mlir
@@ -110,12 +110,12 @@ func.func @transfer_read_dims_mismatch_non_zero_indices(
func.func @transfer_read_dims_mismatch_non_contiguous_non_zero_indices(
%arg : memref<1x3x3x2xf32, strided<[40, 10, 2, 1], offset: ?>>,
- %idx0 : index,
- %idx1 : index) -> vector<2x2xf32> {
+ %idx_1 : index,
+ %idx_2 : index) -> vector<2x2xf32> {
%c0 = arith.constant 0 : index
%cst_1 = arith.constant 0.000000e+00 : f32
- %8 = vector.transfer_read %arg[%c0, %idx0, %idx1, %c0], %cst_1 {in_bounds = [true, true]} :
+ %8 = vector.transfer_read %arg[%c0, %idx_1, %idx_2, %c0], %cst_1 {in_bounds = [true, true]} :
memref<1x3x3x2xf32, strided<[40, 10, 2, 1], offset: ?>>, vector<2x2xf32>
return %8 : vector<2x2xf32>
}
@@ -358,11 +358,11 @@ func.func @transfer_write_dims_mismatch_non_zero_indices(
func.func @transfer_write_dims_mismatch_non_contiguous_non_zero_indices(
%value : vector<2x2xf32>,
%subview : memref<1x3x3x2xf32, strided<[40, 10, 2, 1], offset: ?>>,
- %idx0 : index,
- %idx1 : index) {
+ %idx_1 : index,
+ %idx_2 : index) {
%c0 = arith.constant 0 : index
- vector.transfer_write %value, %subview[%c0, %idx0, %idx1, %c0] {in_bounds = [true, true]} : vector<2x2xf32>, memref<1x3x3x2xf32, strided<[40, 10, 2, 1], offset: ?>>
+ vector.transfer_write %value, %subview[%c0, %idx_1, %idx_2, %c0] {in_bounds = [true, true]} : vector<2x2xf32>, memref<1x3x3x2xf32, strided<[40, 10, 2, 1], offset: ?>>
return
}
@@ -392,7 +392,7 @@ func.func @transfer_write_leading_dynamic_dims(
}
// CHECK-LABEL: func @transfer_write_leading_dynamic_dims
-// CHECK-SAME: %[[ARG0:.+]]: vector<8x4xi8>, %[[ARG1:.+]]: memref<?x?x8x4xi8, {{.+}}>, %[[ARG2:.+]]: index, %[[ARG3:.+]]: index
+// CHECK-SAME: %[[ARG0:.+]]: vector<8x4xi8>, %[[ARG1:.+]]: memref<?x?x8x4xi8, {{.+}}>, %[[ARG2:.+]]: index, %[[ARG3:.+]]: index
// CHECK: %[[C0:.+]] = arith.constant 0 : index
// CHECK: %[[COLLAPSED:.+]] = memref.collapse_shape %[[ARG1]] {{\[}}[0], [1], [2, 3]{{\]}}
// CHECK-SAME: : memref<?x?x8x4xi8, {{.+}}> into memref<?x?x32xi8, {{.+}}>
>From 7413388623830422d7879e0611ab708341cf2d72 Mon Sep 17 00:00:00 2001
From: Andrzej Warzynski <andrzej.warzynski at arm.com>
Date: Sun, 21 Jul 2024 13:22:53 +0100
Subject: [PATCH 3/3] fixup! [mlir][vector] Refactor
vector-transfer-flatten.mlir (nfc) (3/n)
Improve comments
---
.../Utils/GreedyPatternRewriteDriver.cpp | 5 ++--
.../Vector/vector-transfer-flatten.mlir | 30 +++++++++----------
2 files changed, 18 insertions(+), 17 deletions(-)
diff --git a/mlir/lib/Transforms/Utils/GreedyPatternRewriteDriver.cpp b/mlir/lib/Transforms/Utils/GreedyPatternRewriteDriver.cpp
index e0d0acd122e26..2b0726b4095a3 100644
--- a/mlir/lib/Transforms/Utils/GreedyPatternRewriteDriver.cpp
+++ b/mlir/lib/Transforms/Utils/GreedyPatternRewriteDriver.cpp
@@ -586,7 +586,8 @@ bool GreedyPatternRewriteDriver::processWorklist() {
};
function_ref<void(const Pattern &)> onFailure = onFailureCallback;
auto onSuccessCallback = [&](const Pattern &pattern) {
- LLVM_DEBUG(logResult("success", "pattern applied successfully"));
+ LLVM_DEBUG(logResult("success", "pattern applied successfully: " +
+ pattern.getDebugName()));
if (config.listener)
config.listener->notifyPatternEnd(pattern, success());
return success();
@@ -612,7 +613,7 @@ bool GreedyPatternRewriteDriver::processWorklist() {
#endif // MLIR_ENABLE_EXPENSIVE_PATTERN_API_CHECKS
LogicalResult matchResult =
- matcher.matchAndRewrite(op, rewriter, canApply, onFailure, onSuccess);
+ matcher.matchAndRewrite(op, rewriter, nullptr, nullptr, onSuccess);
if (succeeded(matchResult)) {
LLVM_DEBUG(logResultWithLine("success", "pattern matched"));
diff --git a/mlir/test/Dialect/Vector/vector-transfer-flatten.mlir b/mlir/test/Dialect/Vector/vector-transfer-flatten.mlir
index a0a1fc39fcaca..109430189f7f8 100644
--- a/mlir/test/Dialect/Vector/vector-transfer-flatten.mlir
+++ b/mlir/test/Dialect/Vector/vector-transfer-flatten.mlir
@@ -132,7 +132,7 @@ func.func @transfer_read_dims_mismatch_non_contiguous_non_zero_indices(
// -----
/// The leading dynamic shapes don't affect whether this example is flattenable
-/// or not as those dynamic shapes are not candidates for flattening anyway.
+/// or not. Indeed, those dynamic shapes are not candidates for flattening anyway.
func.func @transfer_read_leading_dynamic_dims(
%arg : memref<?x?x8x4xi8, strided<[?, 32, 4, 1], offset: ?>>,
@@ -141,7 +141,8 @@ func.func @transfer_read_leading_dynamic_dims(
%c0_i8 = arith.constant 0 : i8
%c0 = arith.constant 0 : index
- %result = vector.transfer_read %arg[%idx_1, %idx_2, %c0, %c0], %c0_i8 {in_bounds = [true, true]} : memref<?x?x8x4xi8, strided<[?, 32, 4, 1], offset: ?>>, vector<8x4xi8>
+ %result = vector.transfer_read %arg[%idx_1, %idx_2, %c0, %c0], %c0_i8 {in_bounds = [true, true]} :
+ memref<?x?x8x4xi8, strided<[?, 32, 4, 1], offset: ?>>, vector<8x4xi8>
return %result : vector<8x4xi8>
}
@@ -163,10 +164,9 @@ func.func @transfer_read_leading_dynamic_dims(
// -----
-// The input memref has a dynamic trailing shape and hence is not flattened.
-// TODO: This case could be supported via memref.dim
+// One of the dims to be flattened is dynamic - not supported ATM.
-func.func @transfer_read_dims_mismatch_non_zero_indices_trailing_dynamic_dim(
+func.func @negative_transfer_read_dynamic_dim_to_flatten(
%idx_1: index,
%idx_2: index,
%m_in: memref<1x?x4x6xi32>) -> vector<1x2x6xi32> {
@@ -178,11 +178,11 @@ func.func @transfer_read_dims_mismatch_non_zero_indices_trailing_dynamic_dim(
return %v : vector<1x2x6xi32>
}
-// CHECK-LABEL: func.func @transfer_read_dims_mismatch_non_zero_indices_trailing_dynamic_dim
+// CHECK-LABEL: func.func @negative_transfer_read_dynamic_dim_to_flatten
// CHECK-NOT: memref.collapse_shape
// CHECK-NOT: vector.shape_cast
-// CHECK-128B-LABEL: func @transfer_read_dims_mismatch_non_zero_indices_trailing_dynamic_dim
+// CHECK-128B-LABEL: func @negative_transfer_read_dynamic_dim_to_flatten
// CHECK-128B-NOT: memref.collapse_shape
// -----
@@ -377,8 +377,8 @@ func.func @transfer_write_dims_mismatch_non_contiguous_non_zero_indices(
// -----
-// The leading dynamic shapes don't affect whether this example is flattenable
-// or not as those dynamic shapes are not candidates for flattening anyway.
+/// The leading dynamic shapes don't affect whether this example is flattenable
+/// or not. Indeed, those dynamic shapes are not candidates for flattening anyway.
func.func @transfer_write_leading_dynamic_dims(
%vec : vector<8x4xi8>,
@@ -387,7 +387,8 @@ func.func @transfer_write_leading_dynamic_dims(
%idx_2 : index) {
%c0 = arith.constant 0 : index
- vector.transfer_write %vec, %arg[%idx_1, %idx_2, %c0, %c0] {in_bounds = [true, true]} : vector<8x4xi8>, memref<?x?x8x4xi8, strided<[?, 32, 4, 1], offset: ?>>
+ vector.transfer_write %vec, %arg[%idx_1, %idx_2, %c0, %c0] {in_bounds = [true, true]} :
+ vector<8x4xi8>, memref<?x?x8x4xi8, strided<[?, 32, 4, 1], offset: ?>>
return
}
@@ -407,10 +408,9 @@ func.func @transfer_write_leading_dynamic_dims(
// -----
-// The input memref has a dynamic trailing shape and hence is not flattened.
-// TODO: This case could be supported via memref.dim
+// One of the dims to be flattened is dynamic - not supported ATM.
-func.func @transfer_write_dims_mismatch_non_zero_indices_trailing_dynamic_dim(
+func.func @negative_transfer_write_dynamic_to_flatten(
%idx_1: index,
%idx_2: index,
%vec : vector<1x2x6xi32>,
@@ -423,11 +423,11 @@ func.func @transfer_write_dims_mismatch_non_zero_indices_trailing_dynamic_dim(
return
}
-// CHECK-LABEL: func.func @transfer_write_dims_mismatch_non_zero_indices_trailing_dynamic_dim(
+// CHECK-LABEL: func.func @negative_transfer_write_dynamic_to_flatten
// CHECK-NOT: memref.collapse_shape
// CHECK-NOT: vector.shape_cast
-// CHECK-128B-LABEL: func @transfer_write_dims_mismatch_non_zero_indices_trailing_dynamic_dim(
+// CHECK-128B-LABEL: func @negative_transfer_write_dynamic_to_flatten
// CHECK-128B-NOT: memref.collapse_shape
// -----
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