Index: mlir/lib/Dialect/LLVMIR/IR/LLVMDialect.cpp
===================================================================
--- mlir/lib/Dialect/LLVMIR/IR/LLVMDialect.cpp
+++ mlir/lib/Dialect/LLVMIR/IR/LLVMDialect.cpp
@@ -3208,9 +3208,11 @@
   OpBuilder moduleBuilder(module.getBodyRegion(), builder.getListener());
   MLIRContext *ctx = builder.getContext();
   auto type = LLVM::LLVMArrayType::get(IntegerType::get(ctx, 8), value.size());
-  auto global = moduleBuilder.create<LLVM::GlobalOp>(
-      loc, type, /*isConstant=*/true, linkage, name,
-      builder.getStringAttr(value), /*alignment=*/0);
+  auto symbol = module.lookupSymbol<LLVM::GlobalOp>(name.str());
+  auto global = symbol ? symbol
+                       : moduleBuilder.create<LLVM::GlobalOp>(
+                             loc, type, /*isConstant=*/true, linkage, name,
+                             builder.getStringAttr(value), /*alignment=*/0);
 
   LLVMPointerType resultType;
   LLVMPointerType charPtr;