[PATCH] D101800: [OpenMP] Fix non-determinism in clang task codegen (lastprivates)

[Giorgis Georgakoudis via Phabricator via cfe-commits]

ggeorgakoudis created this revision.
Herald added subscribers: mgrang, guansong, yaxunl.
ggeorgakoudis requested review of this revision.
Herald added a reviewer: jdoerfert.
Herald added subscribers: cfe-commits, sstefan1.
Herald added a project: clang.

Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D101800

Files:
  clang/lib/CodeGen/CGStmtOpenMP.cpp


Index: clang/lib/CodeGen/CGStmtOpenMP.cpp
===================================================================
--- clang/lib/CodeGen/CGStmtOpenMP.cpp
+++ clang/lib/CodeGen/CGStmtOpenMP.cpp
@@ -4293,7 +4293,7 @@
     }
   }
   // Get list of lastprivate variables (for taskloops).
-  llvm::DenseMap<const VarDecl *, const DeclRefExpr *> LastprivateDstsOrigs;
+  llvm::MapVector<const VarDecl *, const DeclRefExpr *> LastprivateDstsOrigs;
   for (const auto *C : S.getClausesOfKind<OMPLastprivateClause>()) {
     auto IRef = C->varlist_begin();
     auto ID = C->destination_exprs().begin();
@@ -4304,8 +4304,8 @@
         Data.LastprivateCopies.push_back(IInit);
       }
       LastprivateDstsOrigs.insert(
-          {cast<VarDecl>(cast<DeclRefExpr>(*ID)->getDecl()),
-           cast<DeclRefExpr>(*IRef)});
+          std::make_pair(cast<VarDecl>(cast<DeclRefExpr>(*ID)->getDecl()),
+                         cast<DeclRefExpr>(*IRef)));
       ++IRef;
       ++ID;
     }


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