[mlir][vector] Use notifyMatchFailure instead of assert in VectorLinearize (#93590)

As it was [suggested](https://github.com/llvm/llvm-project/pull/92370#discussion_r1617592942), the `assert` is replaced by `notifyMatchFailure` for improved consistency.

2 files changed, 54 insertions, 13 deletions

diff --git a/mlir/lib/Dialect/Vector/Transforms/VectorLinearize.cpp b/mlir/lib/Dialect/Vector/Transforms/VectorLinearize.cpp
index 156bf74..a1bb81e 100644
--- a/mlir/lib/Dialect/Vector/Transforms/VectorLinearize.cpp
+++ b/mlir/lib/Dialect/Vector/Transforms/VectorLinearize.cpp
@@ -151,10 +151,12 @@ struct LinearizeVectorExtractStridedSlice final
   LogicalResult
   matchAndRewrite(vector::ExtractStridedSliceOp extractOp, OpAdaptor adaptor,
                   ConversionPatternRewriter &rewriter) const override {
-    Type dstType = getTypeConverter()->convertType(extractOp.getType());
-    assert(!(extractOp.getVector().getType().isScalable() ||
-             cast<VectorType>(dstType).isScalable()) &&
-           "scalable vectors are not supported.");
+    VectorType dstType =
+        getTypeConverter()->convertType<VectorType>(extractOp.getType());
+    assert(dstType && "vector type destination expected.");
+    if (extractOp.getVector().getType().isScalable() || dstType.isScalable())
+      return rewriter.notifyMatchFailure(extractOp,
+                                         "scalable vectors are not supported.");
     if (!isLessThanTargetBitWidth(extractOp, targetVectorBitWidth))
       return rewriter.notifyMatchFailure(
           extractOp, "Can't flatten since targetBitWidth <= OpSize");
@@ -264,10 +266,14 @@ struct LinearizeVectorShuffle final
   LogicalResult
   matchAndRewrite(vector::ShuffleOp shuffleOp, OpAdaptor adaptor,
                   ConversionPatternRewriter &rewriter) const override {
-    Type dstType = getTypeConverter()->convertType(shuffleOp.getType());
+    VectorType dstType =
+        getTypeConverter()->convertType<VectorType>(shuffleOp.getType());
+    assert(dstType && "vector type destination expected.");
+    // The assert is used because vector.shuffle does not support scalable
+    // vectors.
     assert(!(shuffleOp.getV1VectorType().isScalable() ||
              shuffleOp.getV2VectorType().isScalable() ||
-             cast<VectorType>(dstType).isScalable()) &&
+             dstType.isScalable()) &&
            "scalable vectors are not supported.");
     if (!isLessThanTargetBitWidth(shuffleOp, targetVectorBitWidth))
       return rewriter.notifyMatchFailure(
@@ -336,9 +342,10 @@ struct LinearizeVectorExtract final
   matchAndRewrite(vector::ExtractOp extractOp, OpAdaptor adaptor,
                   ConversionPatternRewriter &rewriter) const override {
     Type dstTy = getTypeConverter()->convertType(extractOp.getType());
-    assert(!(extractOp.getVector().getType().isScalable() ||
-             cast<VectorType>(dstTy).isScalable()) &&
-           "scalable vectors are not supported.");
+    if (extractOp.getVector().getType().isScalable() ||
+        cast<VectorType>(dstTy).isScalable())
+      return rewriter.notifyMatchFailure(extractOp,
+                                         "scalable vectors are not supported.");
     if (!isLessThanTargetBitWidth(extractOp, targetVectorBitWidth))
       return rewriter.notifyMatchFailure(
           extractOp, "Can't flatten since targetBitWidth <= OpSize");
@@ -394,10 +401,12 @@ struct LinearizeVectorInsert final
   LogicalResult
   matchAndRewrite(vector::InsertOp insertOp, OpAdaptor adaptor,
                   ConversionPatternRewriter &rewriter) const override {
-    Type dstTy = getTypeConverter()->convertType(insertOp.getDestVectorType());
-    assert(!(insertOp.getDestVectorType().isScalable() ||
-             cast<VectorType>(dstTy).isScalable()) &&
-           "scalable vectors are not supported.");
+    VectorType dstTy = getTypeConverter()->convertType<VectorType>(
+        insertOp.getDestVectorType());
+    assert(dstTy && "vector type destination expected.");
+    if (insertOp.getDestVectorType().isScalable() || dstTy.isScalable())
+      return rewriter.notifyMatchFailure(insertOp,
+                                         "scalable vectors are not supported.");
 
     if (!isLessThanOrEqualTargetBitWidth(insertOp.getSourceType(),
                                          targetVectorBitWidth))
diff --git a/mlir/test/Dialect/Vector/linearize.mlir b/mlir/test/Dialect/Vector/linearize.mlir
index ec3806c..916e3e5 100644
--- a/mlir/test/Dialect/Vector/linearize.mlir
+++ b/mlir/test/Dialect/Vector/linearize.mlir
@@ -177,6 +177,17 @@ func.func @test_extract_strided_slice_1(%arg0 : vector<4x8xf32>) -> vector<2x2xf
   return %0 : vector<2x2xf32>
 }
 
+// ALL-LABEL:   func.func @test_extract_strided_slice_1_scalable(
+// ALL-SAME:    %[[VAL_0:.*]]: vector<4x[8]xf32>) -> vector<2x[8]xf32> {
+func.func @test_extract_strided_slice_1_scalable(%arg0: vector<4x[8]xf32>) -> vector<2x[8]xf32> {  
+  // ALL-NOT: vector.shuffle
+  // ALL-NOT: vector.shape_cast
+  // ALL: %[[RES:.*]] = vector.extract_strided_slice %[[VAL_0]] {offsets = [1, 0], sizes = [2, 8], strides = [1, 1]} : vector<4x[8]xf32> to vector<2x[8]xf32>
+  %0 = vector.extract_strided_slice %arg0 { sizes = [2, 8], strides = [1, 1], offsets = [1, 0] } : vector<4x[8]xf32> to vector<2x[8]xf32>
+  // ALL: return %[[RES]] : vector<2x[8]xf32>
+  return %0 : vector<2x[8]xf32>
+}
+
 // -----
 // ALL-LABEL: test_extract_strided_slice_2
 // ALL-SAME: (%[[ORIG_ARG:.*]]: vector<2x8x2xf32>) -> vector<1x4x2xf32> {
@@ -246,6 +257,16 @@ func.func @test_vector_extract(%arg0: vector<2x8x2xf32>) -> vector<8x2xf32> {
   return %0 : vector<8x2xf32>
 }
 
+// ALL-LABEL:   func.func @test_vector_extract_scalable(
+// ALL-SAME:    %[[VAL_0:.*]]: vector<2x8x[2]xf32>) -> vector<8x[2]xf32> {
+func.func @test_vector_extract_scalable(%arg0: vector<2x8x[2]xf32>) -> vector<8x[2]xf32> {
+  // ALL-NOT: vector.shuffle
+  // ALL-NOT: vector.shape_cast
+  // ALL: %[[RES:.*]] = vector.extract %[[VAL_0]][1] : vector<8x[2]xf32> from vector<2x8x[2]xf32>
+  %0 = vector.extract %arg0[1]: vector<8x[2]xf32> from vector<2x8x[2]xf32>
+  // ALL: return %[[RES]] : vector<8x[2]xf32>
+  return %0 : vector<8x[2]xf32>
+}
 // -----
 // ALL-LABEL: test_vector_insert
 // ALL-SAME: (%[[DEST:.*]]: vector<2x8x4xf32>, %[[SRC:.*]]: vector<8x4xf32>) -> vector<2x8x4xf32> {
@@ -274,3 +295,14 @@ func.func @test_vector_insert(%arg0: vector<2x8x4xf32>, %arg1: vector<8x4xf32>)
   %0 = vector.insert %arg1, %arg0[0]: vector<8x4xf32> into vector<2x8x4xf32>
   return %0 : vector<2x8x4xf32>
 }
+
+// ALL-LABEL:   func.func @test_vector_insert_scalable(
+// ALL-SAME:    %[[VAL_0:.*]]: vector<2x8x[4]xf32>, %[[VAL_1:.*]]: vector<8x[4]xf32>) -> vector<2x8x[4]xf32> {
+func.func @test_vector_insert_scalable(%arg0: vector<2x8x[4]xf32>, %arg1: vector<8x[4]xf32>) -> vector<2x8x[4]xf32> {
+  // ALL-NOT: vector.shuffle
+  // ALL-NOT: vector.shape_cast
+  // ALL: %[[RES:.*]] = vector.insert %[[VAL_1]], %[[VAL_0]] [0] : vector<8x[4]xf32> into vector<2x8x[4]xf32>
+  %0 = vector.insert %arg1, %arg0[0]: vector<8x[4]xf32> into vector<2x8x[4]xf32>
+  // ALL: return %[[RES]] : vector<2x8x[4]xf32>
+  return %0 : vector<2x8x[4]xf32>
+}