[Mlir-commits] [mlir] [mlir][mpi] adding MPI_Allgather and lowering to LLVM (PR #176937)

[Frank Schlimbach]

================
@@ -712,6 +768,64 @@ struct RecvOpLowering : public ConvertOpToLLVMPattern<mpi::RecvOp> {
   }
 };
 
+//===----------------------------------------------------------------------===//
+// AllGatherOpLowering
+//===----------------------------------------------------------------------===//
+
+struct AllGatherOpLowering : public ConvertOpToLLVMPattern<mpi::AllGatherOp> {
+  using ConvertOpToLLVMPattern::ConvertOpToLLVMPattern;
+
+  LogicalResult
+  matchAndRewrite(mpi::AllGatherOp op, OpAdaptor adaptor,
+                  ConversionPatternRewriter &rewriter) const override {
+    Location loc = op.getLoc();
+    MLIRContext *context = rewriter.getContext();
+    Type sElemType = op.getSendbuf().getType().getElementType();
+    Type rElemType = op.getRecvbuf().getType().getElementType();
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fschlimb wrote:

Yes, I need the memref.

https://github.com/llvm/llvm-project/pull/176937