[Mlir-commits] [mlir] [MLIR][XeGPU] Add layout propagation for `xegpu.store_matrix` (PR #174952)

[Jianhui Li]

================
@@ -1100,6 +1107,28 @@ void LayoutInfoPropagation::visitStoreScatterOp(
     propagateIfChanged(operands[3], operands[3]->meet(maskLayout));
 }
 
+void LayoutInfoPropagation::visitStoreMatrixOp(
+    xegpu::StoreMatrixOp storeMatrix, ArrayRef<LayoutInfoLattice *> operands,
+    ArrayRef<const LayoutInfoLattice *> results) {
+  Value operand = storeMatrix.getData();
+  unsigned index =
+      std::distance(storeMatrix.operand_begin(),
+                    llvm::find(storeMatrix->getOperands(), operand));
+
+  auto uArch = getUArch(getChipStr(storeMatrix).value_or(""));
+  const int subgroupSize = uArch->getSubgroupSize();
+  SmallVector<int> instData = {1, 8};
----------------
Jianhui-Li wrote:

why it is {1, 8}? 

https://github.com/llvm/llvm-project/pull/174952