replace greedy pattern rewrites with partial conversions

better failure messages

src/PIM/Dialect/Pim/Transforms/Bufferization/PimBufferizationPass.cpp

@@ -79,6 +79,7 @@ void PimBufferizationPass::runOnOperation() {
     return WalkResult::skip();
   });
   if (hasFailed) {
+    moduleOp.emitError("failed to lower memref.copy-like ops inside PIM core bodies during bufferization");
     signalPassFailure();
     return;
   }