[Mlir-commits] [mlir] [MLIR][XEGPU] Add blocking support for scatter ops (PR #144766)

[Chao Chen]

================
@@ -295,12 +297,39 @@ void XeGPUBlockingPass::runOnOperation() {
     Type elemTy = type.getElementType();
     Type newTy;
 
-    if (auto tdescTy = dyn_cast<xegpu::TensorDescType>(type))
-      newTy = xegpu::TensorDescType::get(
-          ctx, tileShape, elemTy, tdescTy.getEncoding(),
-          tdescTy.getLayoutAttr().dropInstData());
-    else
+    if (auto tdescTy = dyn_cast<xegpu::TensorDescType>(type)) {
+
+      Attribute encoding = tdescTy.getEncoding();
+      // If the encoding is a ScatterTensorDescAttr, we need to
+      // potentially adjust the chunk size based on the inst_data.
+      if (tdescTy.isScattered()) {
+        auto scatterAttr = tdescTy.getEncodingAsScatterTensorDescAttr();
+        //    mlir::dyn_cast<xegpu::ScatterTensorDescAttr>(encoding);
----------------
chencha3 wrote:

nit: This line can be removed. But I like to use `mlir::dyn_cast<xegpu::ScatterTensorDescAttr>(encoding)` here, it is clearer about what happened to encoding.

https://github.com/llvm/llvm-project/pull/144766