[Mlir-commits] [mlir] [mlir][xegpu] Add definitons of MatrixDescType and related ops. (PR #153273)

[Jianhui Li]

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@@ -201,4 +201,26 @@ def XeGPU_Nbarrier: XeGPUTypeDef<"Nbarrier", "nbarrier", [], "mlir::Type"> {
   }];
 }
 
+def XeGPU_MatrixDesc: XeGPUTypeDef<"MatrixDesc", "matrix_desc", [ShapedTypeInterface], "mlir::Type"> {
+  let summary = "MatrixDesc describing the data in SLM";
+  let description = [{
+    MatrixDesc represents a block of data stored in shared local memory.
+    By default, unless a layout attribute is provided, the data is stored
+    contiguously in row-major order within the region.
+  }];
+  let parameters = (ins ArrayRefParameter<"int64_t">: $shape,
+                        "mlir::Type": $elementType,
+                        OptionalParameter<"mlir::Attribute">: $layout);
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Jianhui-Li wrote:

consider using mem_layout instead of layout, to differentiate with XeGPU.layout which describes the mapping between sg/lane ids to the data.



https://github.com/llvm/llvm-project/pull/153273