diff --git a/mlir/lib/CAPI/IR/IR.cpp b/mlir/lib/CAPI/IR/IR.cpp
--- a/mlir/lib/CAPI/IR/IR.cpp
+++ b/mlir/lib/CAPI/IR/IR.cpp
@@ -195,7 +195,7 @@
 
 MlirModule mlirModuleCreateParse(MlirContext context, MlirStringRef module) {
   OwningOpRef<ModuleOp> owning =
-      parseSourceString(unwrap(module), unwrap(context));
+      parseSourceString<ModuleOp>(unwrap(module), unwrap(context));
   if (!owning)
     return MlirModule{nullptr};
   return MlirModule{owning.release().getOperation()};
diff --git a/mlir/unittests/ExecutionEngine/Invoke.cpp b/mlir/unittests/ExecutionEngine/Invoke.cpp
--- a/mlir/unittests/ExecutionEngine/Invoke.cpp
+++ b/mlir/unittests/ExecutionEngine/Invoke.cpp
@@ -63,7 +63,8 @@
   registerAllDialects(registry);
   registerLLVMDialectTranslation(registry);
   MLIRContext context(registry);
-  OwningOpRef<ModuleOp> module = parseSourceString(moduleStr, &context);
+  OwningOpRef<ModuleOp> module =
+      parseSourceString<ModuleOp>(moduleStr, &context);
   ASSERT_TRUE(!!module);
   ASSERT_TRUE(succeeded(lowerToLLVMDialect(*module)));
   auto jitOrError = ExecutionEngine::create(*module);
@@ -88,7 +89,8 @@
   registerAllDialects(registry);
   registerLLVMDialectTranslation(registry);
   MLIRContext context(registry);
-  OwningOpRef<ModuleOp> module = parseSourceString(moduleStr, &context);
+  OwningOpRef<ModuleOp> module =
+      parseSourceString<ModuleOp>(moduleStr, &context);
   ASSERT_TRUE(!!module);
   ASSERT_TRUE(succeeded(lowerToLLVMDialect(*module)));
   auto jitOrError = ExecutionEngine::create(*module);
@@ -118,7 +120,7 @@
   registerAllDialects(registry);
   registerLLVMDialectTranslation(registry);
   MLIRContext context(registry);
-  auto module = parseSourceString(moduleStr, &context);
+  auto module = parseSourceString<ModuleOp>(moduleStr, &context);
   ASSERT_TRUE(!!module);
   ASSERT_TRUE(succeeded(lowerToLLVMDialect(*module)));
   auto jitOrError = ExecutionEngine::create(*module);
@@ -153,7 +155,7 @@
   registerAllDialects(registry);
   registerLLVMDialectTranslation(registry);
   MLIRContext context(registry);
-  auto module = parseSourceString(moduleStr, &context);
+  auto module = parseSourceString<ModuleOp>(moduleStr, &context);
   ASSERT_TRUE(!!module);
   ASSERT_TRUE(succeeded(lowerToLLVMDialect(*module)));
   auto jitOrError = ExecutionEngine::create(*module);
@@ -207,7 +209,8 @@
   registerAllDialects(registry);
   registerLLVMDialectTranslation(registry);
   MLIRContext context(registry);
-  OwningOpRef<ModuleOp> module = parseSourceString(moduleStr, &context);
+  OwningOpRef<ModuleOp> module =
+      parseSourceString<ModuleOp>(moduleStr, &context);
   ASSERT_TRUE(!!module);
   ASSERT_TRUE(succeeded(lowerToLLVMDialect(*module)));
   auto jitOrError = ExecutionEngine::create(*module);
@@ -249,7 +252,7 @@
   registerAllDialects(registry);
   registerLLVMDialectTranslation(registry);
   MLIRContext context(registry);
-  auto module = parseSourceString(moduleStr, &context);
+  auto module = parseSourceString<ModuleOp>(moduleStr, &context);
   ASSERT_TRUE(!!module);
   ASSERT_TRUE(succeeded(lowerToLLVMDialect(*module)));
   auto jitOrError = ExecutionEngine::create(*module);
diff --git a/mlir/unittests/Interfaces/ControlFlowInterfacesTest.cpp b/mlir/unittests/Interfaces/ControlFlowInterfacesTest.cpp
--- a/mlir/unittests/Interfaces/ControlFlowInterfacesTest.cpp
+++ b/mlir/unittests/Interfaces/ControlFlowInterfacesTest.cpp
@@ -82,7 +82,7 @@
   registry.insert<CFTestDialect>();
   MLIRContext ctx(registry);
 
-  OwningOpRef<ModuleOp> module = parseSourceString(ir, &ctx);
+  OwningOpRef<ModuleOp> module = parseSourceString<ModuleOp>(ir, &ctx);
   Operation *testOp = &module->getBody()->getOperations().front();
   Operation *op1 = &testOp->getRegion(0).front().front();
   Operation *op2 = &testOp->getRegion(1).front().front();
@@ -103,7 +103,7 @@
   registry.insert<CFTestDialect>();
   MLIRContext ctx(registry);
 
-  OwningOpRef<ModuleOp> module = parseSourceString(ir, &ctx);
+  OwningOpRef<ModuleOp> module = parseSourceString<ModuleOp>(ir, &ctx);
   Operation *testOp = &module->getBody()->getOperations().front();
   Operation *op1 = &testOp->getRegion(0).front().front();
   Operation *op2 = &testOp->getRegion(1).front().front();
@@ -130,7 +130,7 @@
   registry.insert<CFTestDialect>();
   MLIRContext ctx(registry);
 
-  OwningOpRef<ModuleOp> module = parseSourceString(ir, &ctx);
+  OwningOpRef<ModuleOp> module = parseSourceString<ModuleOp>(ir, &ctx);
   Operation *testOp = &module->getBody()->getOperations().front();
   Operation *op1 =
       &testOp->getRegion(0).front().front().getRegion(0).front().front();
diff --git a/mlir/unittests/Interfaces/DataLayoutInterfacesTest.cpp b/mlir/unittests/Interfaces/DataLayoutInterfacesTest.cpp
--- a/mlir/unittests/Interfaces/DataLayoutInterfacesTest.cpp
+++ b/mlir/unittests/Interfaces/DataLayoutInterfacesTest.cpp
@@ -236,7 +236,7 @@
   registry.insert<DLTIDialect, DLTestDialect>();
   MLIRContext ctx(registry);
 
-  OwningOpRef<ModuleOp> module = parseSourceString(ir, &ctx);
+  OwningOpRef<ModuleOp> module = parseSourceString<ModuleOp>(ir, &ctx);
   DataLayout layout(module.get());
   EXPECT_EQ(layout.getTypeSize(IntegerType::get(&ctx, 42)), 6u);
   EXPECT_EQ(layout.getTypeSize(Float16Type::get(&ctx)), 2u);
@@ -257,7 +257,7 @@
   registry.insert<DLTIDialect, DLTestDialect>();
   MLIRContext ctx(registry);
 
-  OwningOpRef<ModuleOp> module = parseSourceString(ir, &ctx);
+  OwningOpRef<ModuleOp> module = parseSourceString<ModuleOp>(ir, &ctx);
   auto op =
       cast<DataLayoutOpInterface>(module->getBody()->getOperations().front());
   DataLayout layout(op);
@@ -280,7 +280,7 @@
   registry.insert<DLTIDialect, DLTestDialect>();
   MLIRContext ctx(registry);
 
-  OwningOpRef<ModuleOp> module = parseSourceString(ir, &ctx);
+  OwningOpRef<ModuleOp> module = parseSourceString<ModuleOp>(ir, &ctx);
   auto op =
       cast<DataLayoutOpInterface>(module->getBody()->getOperations().front());
   DataLayout layout(op);
@@ -306,7 +306,7 @@
   registry.insert<DLTIDialect, DLTestDialect>();
   MLIRContext ctx(registry);
 
-  OwningOpRef<ModuleOp> module = parseSourceString(ir, &ctx);
+  OwningOpRef<ModuleOp> module = parseSourceString<ModuleOp>(ir, &ctx);
   auto op =
       cast<DataLayoutOpInterface>(module->getBody()->getOperations().front());
   DataLayout layout(op);
@@ -338,7 +338,7 @@
   registry.insert<DLTIDialect, DLTestDialect>();
   MLIRContext ctx(registry);
 
-  OwningOpRef<ModuleOp> module = parseSourceString(ir, &ctx);
+  OwningOpRef<ModuleOp> module = parseSourceString<ModuleOp>(ir, &ctx);
   auto op =
       cast<DataLayoutOpInterface>(module->getBody()->getOperations().front());
   DataLayout layout(op);
@@ -369,7 +369,7 @@
   registry.insert<DLTIDialect, DLTestDialect>();
   MLIRContext ctx(registry);
 
-  OwningOpRef<ModuleOp> module = parseSourceString(ir, &ctx);
+  OwningOpRef<ModuleOp> module = parseSourceString<ModuleOp>(ir, &ctx);
   auto op =
       cast<DataLayoutOpInterface>(module->getBody()->getOperations().front());
   DataLayout layout(op);
@@ -395,7 +395,7 @@
   registry.insert<DLTIDialect, DLTestDialect>();
   MLIRContext ctx(registry);
 
-  OwningOpRef<ModuleOp> module = parseSourceString(ir, &ctx);
+  OwningOpRef<ModuleOp> module = parseSourceString<ModuleOp>(ir, &ctx);
   auto op =
       cast<DataLayoutOpInterface>(module->getBody()->getOperations().front());
   DataLayout layout(op);
@@ -414,7 +414,7 @@
   registry.insert<DLTIDialect, DLTestDialect>();
   MLIRContext ctx(registry);
 
-  OwningOpRef<ModuleOp> module = parseSourceString(ir, &ctx);
+  OwningOpRef<ModuleOp> module = parseSourceString<ModuleOp>(ir, &ctx);
   auto op =
       cast<DataLayoutOpInterface>(module->getBody()->getOperations().front());
   DataLayout layout(op);
diff --git a/mlir/unittests/Interfaces/InferTypeOpInterfaceTest.cpp b/mlir/unittests/Interfaces/InferTypeOpInterfaceTest.cpp
--- a/mlir/unittests/Interfaces/InferTypeOpInterfaceTest.cpp
+++ b/mlir/unittests/Interfaces/InferTypeOpInterfaceTest.cpp
@@ -35,7 +35,7 @@
 
     registry.insert<func::FuncDialect, arith::ArithmeticDialect>();
     ctx.appendDialectRegistry(registry);
-    module = parseSourceString(ir, &ctx);
+    module = parseSourceString<ModuleOp>(ir, &ctx);
     mapFn = cast<FuncOp>(module->front());
   }
 
diff --git a/mlir/unittests/Transforms/Canonicalizer.cpp b/mlir/unittests/Transforms/Canonicalizer.cpp
--- a/mlir/unittests/Transforms/Canonicalizer.cpp
+++ b/mlir/unittests/Transforms/Canonicalizer.cpp
@@ -74,7 +74,7 @@
     %1 = "test.foo"() {sym_name = "B"} : () -> (f32)
   )mlir";
 
-  OwningOpRef<ModuleOp> module = mlir::parseSourceString(code, &context);
+  OwningOpRef<ModuleOp> module = parseSourceString<ModuleOp>(code, &context);
   ASSERT_TRUE(succeeded(mgr.run(*module)));
 
   EXPECT_TRUE(module->lookupSymbol("B"));