[llvm-branch-commits] [mlir] [mlir][linalg] Add transform operator for Winograd Conv2D algorithm (PR #96182)

[Hsiangkai Wang via llvm-branch-commits]

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@@ -3480,6 +3480,31 @@ DiagnosedSilenceableFailure transform::MapCopyToThreadsOp::applyToOne(
   return DiagnosedSilenceableFailure::success();
 }
 
+//===----------------------------------------------------------------------===//
+// WinogradConv2DOp
+//===----------------------------------------------------------------------===//
+
+DiagnosedSilenceableFailure transform::WinogradConv2DOp::applyToOne(
+    transform::TransformRewriter &rewriter, linalg::LinalgOp target,
+    transform::ApplyToEachResultList &results,
+    transform::TransformState &state) {
+  rewriter.setInsertionPoint(target);
+  auto maybeTransformed =
+      TypeSwitch<Operation *, FailureOr<Operation *>>(target)
+          .Case([&](linalg::Conv2DNhwcFhwcOp op) {
+            return winogradConv2D(rewriter, op, getM(), getR());
+          })
+          .Default([&](Operation *op) {
+            return rewriter.notifyMatchFailure(op, "not supported");
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Hsiangkai wrote:

Use `emitError` to output error messages.

https://github.com/llvm/llvm-project/pull/96182