diff --git a/llvm/lib/CodeGen/MIRParser/MIRParser.cpp b/llvm/lib/CodeGen/MIRParser/MIRParser.cpp
index ab4a037..bfec6c5 100644
--- a/llvm/lib/CodeGen/MIRParser/MIRParser.cpp
+++ b/llvm/lib/CodeGen/MIRParser/MIRParser.cpp
@@ -391,9 +391,14 @@
 
   // Initialize the ordinary frame objects.
   for (const auto &Object : YamlMF.StackObjects) {
-    int ObjectIdx = MFI.CreateStackObject(
-        Object.Size, Object.Alignment,
-        Object.Type == yaml::MachineStackObject::SpillSlot);
+    int ObjectIdx;
+    if (Object.Type == yaml::MachineStackObject::VariableSized)
+      ObjectIdx =
+          MFI.CreateVariableSizedObject(Object.Alignment, /*Alloca=*/nullptr);
+    else
+      ObjectIdx = MFI.CreateStackObject(
+          Object.Size, Object.Alignment,
+          Object.Type == yaml::MachineStackObject::SpillSlot);
     MFI.setObjectOffset(ObjectIdx, Object.Offset);
     // TODO: Store the mapping between object IDs and object indices to parse
     // stack object references correctly.
diff --git a/llvm/lib/CodeGen/MIRPrinter.cpp b/llvm/lib/CodeGen/MIRPrinter.cpp
index d9cd136..0af2fbd 100644
--- a/llvm/lib/CodeGen/MIRPrinter.cpp
+++ b/llvm/lib/CodeGen/MIRPrinter.cpp
@@ -188,7 +188,9 @@
     YamlObject.ID = ID++;
     YamlObject.Type = MFI.isSpillSlotObjectIndex(I)
                           ? yaml::MachineStackObject::SpillSlot
-                          : yaml::MachineStackObject::DefaultType;
+                          : MFI.isVariableSizedObjectIndex(I)
+                                ? yaml::MachineStackObject::VariableSized
+                                : yaml::MachineStackObject::DefaultType;
     YamlObject.Offset = MFI.getObjectOffset(I);
     YamlObject.Size = MFI.getObjectSize(I);
     YamlObject.Alignment = MFI.getObjectAlignment(I);