[Mlir-commits] [mlir] [MLIR] Folding unpack and pack sequence in data layout propagation from padded domain (PR #138332)

[Zhuoran Yin]

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@@ -298,20 +298,60 @@ getOrCreatePackedViewOfOperand(OpBuilder &b, Location loc, PackInfo packInfo,
   return std::make_tuple(packedOperand, indexingMap);
 }
 
+static bool isGenericOutsNotUsed(linalg::GenericOp genericOp) {
+  int numDpsOuts = genericOp.getNumDpsInits();
+  Block *block = genericOp.getBody();
+  int numBlockArgs = block->getNumArguments();
+  int initArgStartIndex = numBlockArgs - numDpsOuts;
+  for (int i = 0; i < numDpsOuts; ++i) {
+    int matchingInitArgIndex = initArgStartIndex + i;
+    return block->getArgument(matchingInitArgIndex).use_empty();
+  }
+  return true;
+}
+
 /// Pack a genericOp and return it.
 static GenericOp packGenericOp(RewriterBase &rewriter, GenericOp genericOp,
                                Value dest, AffineMap packedOutIndexingMap,
-                               const PackInfo &packInfo) {
+                               const PackInfo &packInfo,
+                               bool canUnpackPackFold) {
   Location loc = genericOp.getLoc();
   SmallVector<Value> inputOperands;
+  SmallVector<Value> inputOperandsFromUnpackedSource;
   SmallVector<AffineMap> indexingMaps;
+
   for (OpOperand *inputOperand : genericOp.getDpsInputOperands()) {
     auto [packedOperand, packedIndexingMap] = getOrCreatePackedViewOfOperand(
         rewriter, loc, packInfo, genericOp, inputOperand);
+
+    if (auto unpackOp = inputOperand->get().getDefiningOp<linalg::UnPackOp>()) {
+      inputOperandsFromUnpackedSource.push_back(unpackOp.getSource());
+    } else {
+      inputOperandsFromUnpackedSource.push_back(packedOperand);
+    }
+
----------------
jerryyin wrote:

Sounds good!

https://github.com/llvm/llvm-project/pull/138332