diff --git a/mlir/include/mlir/Dialect/LLVMIR/LLVMOps.td b/mlir/include/mlir/Dialect/LLVMIR/LLVMOps.td
--- a/mlir/include/mlir/Dialect/LLVMIR/LLVMOps.td
+++ b/mlir/include/mlir/Dialect/LLVMIR/LLVMOps.td
@@ -1647,7 +1647,8 @@
     DefaultValuedAttr<Visibility, "mlir::LLVM::Visibility::Default">:$visibility_,
     OptionalAttr<UnitAttr>:$arm_streaming,
     OptionalAttr<UnitAttr>:$arm_locally_streaming,
-    OptionalAttr<StrAttr>:$section
+    OptionalAttr<StrAttr>:$section,
+    OptionalAttr<UnnamedAddr>:$unnamed_addr
   );
 
   let regions = (region AnyRegion:$body);
diff --git a/mlir/lib/Dialect/LLVMIR/IR/LLVMDialect.cpp b/mlir/lib/Dialect/LLVMIR/IR/LLVMDialect.cpp
--- a/mlir/lib/Dialect/LLVMIR/IR/LLVMDialect.cpp
+++ b/mlir/lib/Dialect/LLVMIR/IR/LLVMDialect.cpp
@@ -1785,7 +1785,8 @@
                            getGlobalTypeAttrName(), getConstantAttrName(),
                            getValueAttrName(), getLinkageAttrName(),
                            getUnnamedAddrAttrName(), getThreadLocal_AttrName(),
-                           getVisibility_AttrName(), getComdatAttrName()});
+                           getVisibility_AttrName(), getComdatAttrName(),
+                           getUnnamedAddrAttrName()});
 
   // Print the trailing type unless it's a string global.
   if (llvm::dyn_cast_or_null<StringAttr>(getValueOrNull()))
@@ -2246,6 +2247,12 @@
                           parseOptionalLLVMKeyword<LLVM::Visibility, int64_t>(
                               parser, result, LLVM::Visibility::Default)));
 
+  // Parse optional UnnamedAddr, default to None.
+  result.addAttribute(getUnnamedAddrAttrName(result.name),
+                      parser.getBuilder().getI64IntegerAttr(
+                          parseOptionalLLVMKeyword<UnnamedAddr, int64_t>(
+                              parser, result, LLVM::UnnamedAddr::None)));
+
   // Default to C Calling Convention if no keyword is provided.
   result.addAttribute(
       getCConvAttrName(result.name),
@@ -2309,6 +2316,11 @@
   StringRef visibility = stringifyVisibility(getVisibility_());
   if (!visibility.empty())
     p << visibility << ' ';
+  if (auto unnamedAddr = getUnnamedAddr()) {
+    StringRef str = stringifyUnnamedAddr(*unnamedAddr);
+    if (!str.empty())
+      p << str << ' ';
+  }
   if (getCConv() != LLVM::CConv::C)
     p << stringifyCConv(getCConv()) << ' ';
 
@@ -2336,7 +2348,7 @@
       p, *this,
       {getFunctionTypeAttrName(), getArgAttrsAttrName(), getResAttrsAttrName(),
        getLinkageAttrName(), getCConvAttrName(), getVisibility_AttrName(),
-       getComdatAttrName()});
+       getComdatAttrName(), getUnnamedAddrAttrName()});
 
   // Print the body if this is not an external function.
   Region &body = getBody();
diff --git a/mlir/lib/Target/LLVMIR/ModuleImport.cpp b/mlir/lib/Target/LLVMIR/ModuleImport.cpp
--- a/mlir/lib/Target/LLVMIR/ModuleImport.cpp
+++ b/mlir/lib/Target/LLVMIR/ModuleImport.cpp
@@ -1738,6 +1738,9 @@
   if (func->hasGC())
     funcOp.setGarbageCollector(StringRef(func->getGC()));
 
+  if (func->hasAtLeastLocalUnnamedAddr())
+    funcOp.setUnnamedAddr(convertUnnamedAddrFromLLVM(func->getUnnamedAddr()));
+
   if (func->hasSection())
     funcOp.setSection(StringRef(func->getSection()));
 
diff --git a/mlir/lib/Target/LLVMIR/ModuleTranslation.cpp b/mlir/lib/Target/LLVMIR/ModuleTranslation.cpp
--- a/mlir/lib/Target/LLVMIR/ModuleTranslation.cpp
+++ b/mlir/lib/Target/LLVMIR/ModuleTranslation.cpp
@@ -1041,6 +1041,9 @@
 
     if (auto gc = function.getGarbageCollector())
       llvmFunc->setGC(gc->str());
+
+    if (auto unnamedAddr = function.getUnnamedAddr())
+      llvmFunc->setUnnamedAddr(convertUnnamedAddrToLLVM(*unnamedAddr));
   }
 
   return success();
diff --git a/mlir/test/Dialect/LLVMIR/func.mlir b/mlir/test/Dialect/LLVMIR/func.mlir
--- a/mlir/test/Dialect/LLVMIR/func.mlir
+++ b/mlir/test/Dialect/LLVMIR/func.mlir
@@ -205,6 +205,11 @@
     llvm.return
   }
 
+  // CHECK-LABEL: local_unnamed_addr @local_unnamed_addr_func
+  llvm.func local_unnamed_addr @local_unnamed_addr_func() {
+      llvm.return
+  }
+
   // CHECK: llvm.comdat @__llvm_comdat
   llvm.comdat @__llvm_comdat {
     // CHECK: llvm.comdat_selector @any any
diff --git a/mlir/test/Target/LLVMIR/Import/function-attributes.ll b/mlir/test/Target/LLVMIR/Import/function-attributes.ll
--- a/mlir/test/Target/LLVMIR/Import/function-attributes.ll
+++ b/mlir/test/Target/LLVMIR/Import/function-attributes.ll
@@ -217,3 +217,15 @@
 define void @section_func() section ".section.name" {
   ret void
 }
+
+// -----
+
+; CHECK-LABEL: local_unnamed_addr @local_unnamed_addr_func
+define void @local_unnamed_addr_func() local_unnamed_addr {
+  ret void
+}
+
+// -----
+
+; CHECK-LABEL: unnamed_addr @unnamed_addr_func
+declare void @unnamed_addr_func() unnamed_addr
diff --git a/mlir/test/Target/LLVMIR/llvmir.mlir b/mlir/test/Target/LLVMIR/llvmir.mlir
--- a/mlir/test/Target/LLVMIR/llvmir.mlir
+++ b/mlir/test/Target/LLVMIR/llvmir.mlir
@@ -1642,6 +1642,20 @@
 
 // -----
 
+// CHECK-LABEL: @local_unnamed_addr_func
+// CHECK-SAME: local_unnamed_addr
+llvm.func local_unnamed_addr @local_unnamed_addr_func() {
+    llvm.return
+}
+
+// -----
+
+// CHECK-LABEL: @unnamed_addr_func
+// CHECK-SAME: unnamed_addr
+llvm.func unnamed_addr @unnamed_addr_func()
+
+// -----
+
 // CHECK-LABEL: @callFreezeOp
 llvm.func @callFreezeOp(%x : i32) {
   // CHECK: freeze i32 %{{[0-9]+}}