[CIR][CodeGen] Stub out an empty CIRGenDebugInfo type

Author: lanza

clang/lib/CIR/CodeGen/CIRGenDebugInfo.h

@@ -0,0 +1,20 @@
+//===--- CIRGenDebugInfo.h - DebugInfo for CIRGen ---------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This is the source-level debug info generator for CIR translation.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_LIB_CIR_CODEGEN_CIRGENDEBUGINFO_H
+#define LLVM_CLANG_LIB_CIR_CODEGEN_CIRGENDEBUGINFO_H
+
+namespace cir {
+class CIRGenDebugInfo {};
+} // namespace cir
+
+#endif // LLVM_CLANG_LIB_CIR_CODEGEN_CIRGENDEBUGINFO_H

clang/lib/CIR/CodeGen/CIRGenFunction.h

@@ -15,6 +15,7 @@
 
 #include "CIRGenBuilder.h"
 #include "CIRGenCall.h"
+#include "CIRGenDebugInfo.h"
 #include "CIRGenModule.h"
 #include "CIRGenTBAA.h"
 #include "CIRGenTypeCache.h"
@@ -524,6 +525,8 @@ class CIRGenFunction : public CIRGenTypeCache {
   /// delcs.
   DeclMapTy LocalDeclMap;
 
+  CIRGenDebugInfo *debugInfo = nullptr;
+
   /// Whether llvm.stacksave has been called. Used to avoid
   /// calling llvm.stacksave for multiple VLAs in the same scope.
   /// TODO: Translate to MLIR
@@ -585,10 +588,7 @@ class CIRGenFunction : public CIRGenTypeCache {
 
   const clang::LangOptions &getLangOpts() const { return CGM.getLangOpts(); }
 
-  // TODO: This is currently just a dumb stub. But we want to be able to clearly
-  // assert where we arne't doing things that we know we should and will crash
-  // as soon as we add a DebugInfo type to this class.
-  std::nullptr_t *getDebugInfo() { return nullptr; }
+  CIRGenDebugInfo *getDebugInfo() { return debugInfo; }
 
   void buildReturnOfRValue(mlir::Location loc, RValue RV, QualType Ty);