[mlir] Fix TileUsingForOp attr-dict printing/parsing (#72745)

`TileUsingForOp` has an optional Attribute `interchange` which was given
in curly braces like this: `{interchange = [...]}`. The way this was
parsed meant that no normal `attr-dict` could be attached to the Op.
This patch adds printing / parsing of an `attr-dict` to the Op and treats
the `interchange` Attribute as part of that dictionary for now.

Author: ubfx

mlir/include/mlir/Dialect/Linalg/TransformOps/LinalgTransformOps.td

@@ -1819,7 +1819,7 @@ def TileUsingForOp : Op<Transform_Dialect, "structured.tile_using_for",
   let arguments = (ins TransformHandleTypeInterface:$target,
                    Variadic<TransformParamTypeOrAnyHandle>:$dynamic_sizes,
                    DefaultValuedOptionalAttr<DenseI64ArrayAttr, "{}">:$static_sizes,
-                   DefaultValuedOptionalAttr<DenseI64ArrayAttr, "{}">:$interchange,
+                   DefaultValuedOptionalAttr<I64ArrayAttr, "{}">:$interchange,
                    DefaultValuedOptionalAttr<DenseBoolArrayAttr, "{}">:$scalable_sizes);
   let results = (outs TransformHandleTypeInterface:$tiled_linalg_op,
                       Variadic<TransformHandleTypeInterface>:$loops);

mlir/lib/Dialect/Linalg/TransformOps/LinalgTransformOps.cpp

@@ -2477,7 +2477,7 @@ void transform::TileUsingForOp::build(
         /*target=*/target,
         /*dynamic_sizes=*/dynamicTileSizes,
         /*static_sizes=*/staticTileSizesAttr,
-        /*interchange=*/builder.getDenseI64ArrayAttr(interchange),
+        /*interchange=*/builder.getI64ArrayAttr(interchange),
         /*scalable_sizes=*/expandedScalableSizes);
 }
 
@@ -2611,7 +2611,8 @@ transform::TileUsingForOp::apply(transform::TransformRewriter &rewriter,
       });
     }
 
-    tilingOptions.setInterchange(getInterchange());
+    tilingOptions.setInterchange(
+        extractFromIntegerArrayAttr<int64_t>(getInterchange()));
     FailureOr<scf::SCFTilingResult> maybeTilingResult =
         tileUsingSCFForOp(rewriter, tilingInterface, tilingOptions);
     if (failed(maybeTilingResult))
@@ -2648,33 +2649,6 @@ SmallVector<OpFoldResult> transform::TileUsingForOp::getMixedSizes() {
   return results;
 }
 
-// We want to parse `DenseI64ArrayAttr` using the short form without the
-// `array` prefix to be consistent in the IR with `parseDynamicIndexList`.
-ParseResult parseOptionalInterchange(OpAsmParser &parser,
-                                     OperationState &result) {
-  if (succeeded(parser.parseOptionalLBrace())) {
-    if (failed(parser.parseKeyword("interchange")))
-      return parser.emitError(parser.getNameLoc()) << "expect `interchange`";
-    if (failed(parser.parseEqual()))
-      return parser.emitError(parser.getNameLoc()) << "expect `=`";
-    result.addAttribute("interchange",
-                        DenseI64ArrayAttr::parse(parser, Type{}));
-    if (failed(parser.parseRBrace()))
-      return parser.emitError(parser.getNameLoc()) << "expect `}`";
-  }
-  return success();
-}
-
-void printOptionalInterchange(OpAsmPrinter &p,
-                              ArrayRef<int64_t> interchangeVals) {
-  if (!interchangeVals.empty()) {
-    p << " {interchange = [";
-    llvm::interleaveComma(interchangeVals, p,
-                          [&](int64_t integer) { p << integer; });
-    p << "]}";
-  }
-}
-
 ParseResult transform::TileUsingForOp::parse(OpAsmParser &parser,
                                              OperationState &result) {
   OpAsmParser::UnresolvedOperand target;
@@ -2686,7 +2660,7 @@ ParseResult transform::TileUsingForOp::parse(OpAsmParser &parser,
 
   if (parser.parseOperand(target) || parser.getCurrentLocation(&operandLoc) ||
       parseDynamicIndexList(parser, dynamicSizes, staticSizes, scalableVals) ||
-      parseOptionalInterchange(parser, result) ||
+      parser.parseOptionalAttrDict(result.attributes) ||
       parser.parseColonType(functionalType))
     return ParseResult::failure();
 
@@ -2720,7 +2694,10 @@ void TileUsingForOp::print(OpAsmPrinter &p) {
   printDynamicIndexList(p, getOperation(), getDynamicSizes(), getStaticSizes(),
                         /*valueTypes=*/{}, getScalableSizesAttr(),
                         OpAsmParser::Delimiter::Square);
-  printOptionalInterchange(p, getInterchange());
+  p.printOptionalAttrDict(
+      (*this)->getAttrs(),
+      /*elidedAttrs=*/{getScalableSizesAttrName(getOperation()->getName()),
+                       getStaticSizesAttrName(getOperation()->getName())});
   p << " : ";
   p.printFunctionalType(getOperands().getTypes(), getResults().getTypes());
 }

mlir/test/Dialect/Linalg/transform-ops.mlir

@@ -6,6 +6,14 @@ transform.sequence failures(propagate) {
   %0, %1:2 = transform.structured.tile_using_for %arg0 [2, 0, 3] : (!transform.any_op) -> (!transform.any_op, !transform.any_op, !transform.any_op)
 }
 
+// check that the Attributes of `tile_using_for` are preserved through printing
+// and parsing.
+transform.sequence failures(propagate) {
+^bb1(%arg0: !transform.any_op):
+  // CHECK %{{.*}}, %{{.*}}:2 = transform.structured.tile %arg0 [2, 0, 3] {interchange = [2, 1], test_attr1 = 1 : i64, test_attr2}
+  %0, %1:2 = transform.structured.tile_using_for %arg0 [2, 0, 3] {test_attr1 = 1 : i64, interchange = [2, 1], test_attr2}: (!transform.any_op) -> (!transform.any_op, !transform.any_op, !transform.any_op)
+}
+
 transform.sequence failures(propagate) {
 ^bb1(%arg0: !transform.any_op):
   %0:2 = transform.structured.split %arg0 after 42 { dimension = 0 } : !transform.any_op