diff --git a/lib/SILOptimizer/Mandatory/Differentiation.cpp b/lib/SILOptimizer/Mandatory/Differentiation.cpp
index d039f10b382c8..babb3e0aac2a9 100644
--- a/lib/SILOptimizer/Mandatory/Differentiation.cpp
+++ b/lib/SILOptimizer/Mandatory/Differentiation.cpp
@@ -4691,7 +4691,8 @@ class JVPEmitter final
   CLONE_AND_EMIT_TANGENT(AllocStack, asi) {
     auto &diffBuilder = getDifferentialBuilder();
     auto *mappedAllocStackInst = diffBuilder.createAllocStack(
-        asi->getLoc(), getRemappedTangentType(asi->getElementType()));
+        asi->getLoc(), getRemappedTangentType(asi->getElementType()),
+        asi->getVarInfo());
     bufferMap.try_emplace({asi->getParent(), asi},
                           mappedAllocStackInst);
   }
@@ -6112,7 +6113,7 @@ class PullbackEmitter final : public SILInstructionVisitor<PullbackEmitter> {
     // Allocate local buffer and initialize to zero.
     auto bufObjectType = getRemappedTangentType(originalBuffer->getType());
     auto *newBuf = localAllocBuilder.createAllocStack(
-        originalBuffer.getLoc(), bufObjectType);
+        RegularLocation::getAutoGeneratedLocation(), bufObjectType);
     // Temporarily change global builder insertion point and emit zero into the
     // local buffer.
     auto insertionPoint = builder.getInsertionBB();