[clang] [CIR] Add support for virtual destructor calls (PR #162725)

[Amr Hesham via cfe-commits]

================
@@ -465,6 +468,32 @@ void CIRGenItaniumCXXABI::emitVTableDefinitions(CIRGenVTables &cgvt,
   }
 }
 
+mlir::Value CIRGenItaniumCXXABI::emitVirtualDestructorCall(
+    CIRGenFunction &cgf, const CXXDestructorDecl *dtor, CXXDtorType dtorType,
+    Address thisAddr, DeleteOrMemberCallExpr expr) {
+  auto *callExpr = dyn_cast<const CXXMemberCallExpr *>(expr);
+  auto *delExpr = dyn_cast<const CXXDeleteExpr *>(expr);
+  assert((callExpr != nullptr) ^ (delExpr != nullptr));
+  assert(callExpr == nullptr || callExpr->arg_begin() == callExpr->arg_end());
+  assert(dtorType == Dtor_Deleting || dtorType == Dtor_Complete);
+
+  GlobalDecl globalDecl(dtor, dtorType);
+  const CIRGenFunctionInfo *fnInfo =
+      &cgm.getTypes().arrangeCXXStructorDeclaration(globalDecl);
+  const cir::FuncType &fnTy = cgm.getTypes().getFunctionType(*fnInfo);
+  auto callee = CIRGenCallee::forVirtual(callExpr, globalDecl, thisAddr, fnTy);
+
+  QualType thisTy;
+  if (callExpr)
+    thisTy = callExpr->getObjectType();
+  else
+    thisTy = delExpr->getDestroyedType();
----------------
AmrDeveloper wrote:

```suggestion
  QualType thisTy = callExpr ? callExpr->getObjectType() : delExpr->getDestroyedType();
```

https://github.com/llvm/llvm-project/pull/162725