[Mlir-commits] [mlir] [mlir][xegpu] Improve XeGPU op verification logic for SIMT flavor and update tests. (PR #127920)

[Charitha Saumya]

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@@ -307,6 +310,85 @@ LogicalResult TensorDescType::verify(
   return success();
 }
 
+// If tensor descriptor has a sg_map attribute it is used in SIMT mode.
+// In this mode, the distributed vector shape is determined as follows:
+// Definitions:
+//        wi_data_size = wi_data[0] × wi_data[1]
+//        subgroup_size = wi_layout[0] × wi_layout[1]
+//        distribution_unit_size = subgroup_size × wi_data_size
+// ---------------------------------------------------------------------
+// Case 1: Regular loads/stores.
+// ---------------------------------------------------------------------
+// Distributed vector shape must be:
+//        [chunk_size / wi_data_size, wi_data_size]
+// If the tensor descriptor shape is 1D, first dimension is ignored (set to 1).
+//        [wi_data_size]
+// ---------------------------------------------------------------------
+// Case 2: Block loads/stores
+// ---------------------------------------------------------------------
+// Additionalm definitions:
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charithaintc wrote:

fixed. 

https://github.com/llvm/llvm-project/pull/127920