diff --git a/mlir/lib/AsmParser/Parser.cpp b/mlir/lib/AsmParser/Parser.cpp
--- a/mlir/lib/AsmParser/Parser.cpp
+++ b/mlir/lib/AsmParser/Parser.cpp
@@ -2593,8 +2593,8 @@
       // top-level block.
       auto &parsedOps = topLevelOp->getBody()->getOperations();
       auto &destOps = topLevelBlock->getOperations();
-      destOps.splice(destOps.empty() ? destOps.end() : std::prev(destOps.end()),
-                     parsedOps, parsedOps.begin(), parsedOps.end());
+      destOps.splice(destOps.end(), parsedOps, parsedOps.begin(),
+                     parsedOps.end());
       return success();
     }
 
diff --git a/mlir/lib/Bytecode/Reader/BytecodeReader.cpp b/mlir/lib/Bytecode/Reader/BytecodeReader.cpp
--- a/mlir/lib/Bytecode/Reader/BytecodeReader.cpp
+++ b/mlir/lib/Bytecode/Reader/BytecodeReader.cpp
@@ -1414,8 +1414,7 @@
   // Splice the parsed operations over to the provided top-level block.
   auto &parsedOps = moduleOp->getBody()->getOperations();
   auto &destOps = block->getOperations();
-  destOps.splice(destOps.empty() ? destOps.end() : std::prev(destOps.end()),
-                 parsedOps, parsedOps.begin(), parsedOps.end());
+  destOps.splice(destOps.end(), parsedOps, parsedOps.begin(), parsedOps.end());
   return success();
 }
 
diff --git a/mlir/unittests/Parser/ParserTest.cpp b/mlir/unittests/Parser/ParserTest.cpp
--- a/mlir/unittests/Parser/ParserTest.cpp
+++ b/mlir/unittests/Parser/ParserTest.cpp
@@ -28,4 +28,31 @@
   ASSERT_TRUE(module);
   ASSERT_TRUE(failed(verify(*module)));
 }
+
+TEST(MLIRParser, ParseAtEnd) {
+  std::string firstModuleStr = R"mlir(
+    "test.first"() : () -> ()
+  )mlir";
+  std::string secondModuleStr = R"mlir(
+    "test.second"() : () -> ()
+  )mlir";
+
+  MLIRContext context;
+  context.allowUnregisteredDialects();
+  Block block;
+
+  // Parse the first module string.
+  LogicalResult firstParse =
+      parseSourceString(firstModuleStr, &block, &context);
+  EXPECT_TRUE(succeeded(firstParse));
+
+  // Parse the second module string.
+  LogicalResult secondParse =
+      parseSourceString(secondModuleStr, &block, &context);
+  EXPECT_TRUE(succeeded(secondParse));
+
+  // Check the we parse at the end.
+  EXPECT_EQ(block.front().getName().getStringRef(), "test.first");
+  EXPECT_EQ(block.back().getName().getStringRef(), "test.second");
+}
 } // namespace