[mlir][linalg][bufferize] Fix/add missing case to getAliasingOpOperand

[springerm]

Summary

Depends On D111376

[springerm]

This revision is factored out from D110918. Landing without further review, as discussed.

mlir/lib/Dialect/Linalg/Transforms/ComprehensiveBufferize.cpp

 /// bufferization aliasing behavior, which indicates that the op must allocate
 /// all of its tensor results.
 /// TODO: in the future this may need to evolve towards a list of OpOperand*.
 static Optional<OpOperand *> getAliasingOpOperand(OpResult result) {
   if (!hasKnownBufferizationAliasingBehavior(result.getDefiningOp()))
     return None;
   return TypeSwitch<Operation *, OpOperand *>(result.getDefiningOp())
       .Case([&](tensor::CastOp op) { return &op->getOpOperand(0); })
-      .Case([&](ConstantOp op) { return &op->getOpOperand(0); })
+      .Case([&](ConstantOp op) { return nullptr; })
       .Case([&](ExtractSliceOp op) { return &op->getOpOperand(0); })
       // In the case of scf::ForOp, this currently assumes the iter_args / yield
       // are 1-1. This may fail and is verified at the end.
       // TODO: update this.
       .Case([&](scf::ForOp op) {
         return &op.getIterOpOperands()[result.getResultNumber()];
       })
       .Case([&](InitTensorOp op) { return nullptr; })
       .Case([&](InsertSliceOp op) { return &op->getOpOperand(1); })
       .Case([&](LinalgOp op) {
         return op.getOutputTensorOperands()[result.getResultNumber()];
       })
       .Case([&](TiledLoopOp op) {
         // TODO: TiledLoopOp helper method to avoid leaking impl details.
         return &op->getOpOperand(op.getNumControlOperands() +
                                  op.getNumInputs() + result.getResultNumber());
       })
       .Case([&](vector::TransferWriteOp op) { return &op->getOpOperand(1); })
+      .Case([&](CallOpInterface op) { return nullptr; })
       .Default([&](Operation *op) {
         op->dump();
         llvm_unreachable("unexpected defining op");
         return nullptr;
       });
 }
 
 /// If the an ExtractSliceOp is bufferized in-place, the source operand will