[Mlir-commits] [mlir] [mlir][vector] Support warp distribution of `transfer_read` with dependencies (PR #77779)

[Nicolas Vasilache]

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@@ -822,6 +822,10 @@ struct WarpOpTransferRead : public OpRewritePattern<WarpExecuteOnLane0Op> {
       return failure();
     auto read = operand->get().getDefiningOp<vector::TransferReadOp>();
 
+    // Source must be defined outside of the region.
+    if (!warpOp.isDefinedOutsideOfRegion(read.getSource()))
+      return failure();
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nicolasvasilache wrote:

while we are here, can we return `notifyMatchFailure("Source must be defined outside of the region.")` ?
Ideally also fix the rest if possible.

https://github.com/llvm/llvm-project/pull/77779