[mlir] add overload createDIScopeForLLVMFuncOp function (llvm#111689)

follow up work of llvm#106229, add
create pass overload function to create pass.

---------

Co-authored-by: jingzec <[email protected]>

Author: Observer007

mlir/include/mlir/Dialect/LLVMIR/Transforms/Passes.h

@@ -20,9 +20,6 @@ namespace mlir {
 
 namespace LLVM {
 
-/// Create a pass to add DIScope to LLVMFuncOp that are missing it.
-std::unique_ptr<Pass> createDIScopeForLLVMFuncOpPass();
-
 /// Generate the code for registering conversion passes.
 #define GEN_PASS_DECL
 #define GEN_PASS_REGISTRATION

mlir/include/mlir/Dialect/LLVMIR/Transforms/Passes.td

@@ -48,7 +48,7 @@ def NVVMOptimizeForTarget : Pass<"llvm-optimize-for-nvvm-target"> {
   let constructor = "::mlir::NVVM::createOptimizeForTargetPass()";
 }
 
-def DIScopeForLLVMFuncOp : Pass<"ensure-debug-info-scope-on-llvm-func", "::mlir::ModuleOp"> {
+def DIScopeForLLVMFuncOpPass : Pass<"ensure-debug-info-scope-on-llvm-func", "::mlir::ModuleOp"> {
   let summary = "Materialize LLVM debug info subprogram attribute on every LLVMFuncOp";
   let description = [{
     Having a debug info subprogram attribute on a function is required for
@@ -60,7 +60,6 @@ def DIScopeForLLVMFuncOp : Pass<"ensure-debug-info-scope-on-llvm-func", "::mlir:
     line-by-line or get a backtrace with line numbers.
   }];
 
-  let constructor = "mlir::LLVM::createDIScopeForLLVMFuncOpPass()";
   let options = [
     Option<"emissionKind", "emission-kind", "mlir::LLVM::DIEmissionKind",
     /*default=*/"mlir::LLVM::DIEmissionKind::LineTablesOnly", "Emission kind to generate debug info.",

mlir/lib/Dialect/LLVMIR/Transforms/DIScopeForLLVMFuncOp.cpp

@@ -16,7 +16,7 @@
 
 namespace mlir {
 namespace LLVM {
-#define GEN_PASS_DEF_DISCOPEFORLLVMFUNCOP
+#define GEN_PASS_DEF_DISCOPEFORLLVMFUNCOPPASS
 #include "mlir/Dialect/LLVMIR/Transforms/Passes.h.inc"
 } // namespace LLVM
 } // namespace mlir
@@ -84,8 +84,11 @@ static void addScopeToFunction(LLVM::LLVMFuncOp llvmFunc,
 
 namespace {
 /// Add a debug info scope to LLVMFuncOp that are missing it.
-struct DIScopeForLLVMFuncOp
-    : public LLVM::impl::DIScopeForLLVMFuncOpBase<DIScopeForLLVMFuncOp> {
+struct DIScopeForLLVMFuncOpPass
+    : public LLVM::impl::DIScopeForLLVMFuncOpPassBase<
+          DIScopeForLLVMFuncOpPass> {
+  using Base::Base;
+
   void runOnOperation() override {
     ModuleOp module = getOperation();
     Location loc = module.getLoc();
@@ -131,7 +134,3 @@ struct DIScopeForLLVMFuncOp
 };
 
 } // end anonymous namespace
-
-std::unique_ptr<Pass> mlir::LLVM::createDIScopeForLLVMFuncOpPass() {
-  return std::make_unique<DIScopeForLLVMFuncOp>();
-}