[Openmp-commits] [clang] [llvm] [openmp] [OpenMP][clang] Indirect and Virtual function call mapping from host to device (PR #159857)

[Jason Van Beusekom via Openmp-commits]

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@@ -7360,8 +7360,30 @@ ExprResult SemaOpenMP::ActOnOpenMPCall(ExprResult Call, Scope *Scope,
     return Call;
 
   FunctionDecl *CalleeFnDecl = CE->getDirectCallee();
-  if (!CalleeFnDecl)
+
+  // Mark indirect calls inside target regions, to allow for insertion of
+  // __llvm_omp_indirect_call_lookup calls during codegen.
+  if (!CalleeFnDecl) {
+    if (isInOpenMPTargetExecutionDirective()) {
+      Expr *E = CE->getCallee()->IgnoreParenImpCasts();
+      DeclRefExpr *DRE = nullptr;
+      while (E) {
+        if ((DRE = dyn_cast<DeclRefExpr>(E)))
+          break;
+        if (auto *ME = dyn_cast<MemberExpr>(E))
+          E = ME->getBase()->IgnoreParenImpCasts();
+        else if (auto *ASE = dyn_cast<ArraySubscriptExpr>(E))
+          E = ASE->getBase()->IgnoreParenImpCasts();
+        else
+          break;
+      }
+      VarDecl *VD = DRE ? dyn_cast<VarDecl>(DRE->getDecl()) : nullptr;
+      if (VD && !VD->hasAttr<OMPTargetIndirectCallAttr>())
+        VD->addAttr(OMPTargetIndirectCallAttr::CreateImplicit(getASTContext()));
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Jason-Van-Beusekom wrote:

Done in https://github.com/llvm/llvm-project/pull/159857/commits/bb9e61a5b72a44bf38f713f1d836cfa38df9c98b

https://github.com/llvm/llvm-project/pull/159857