[OPENMP] Fix crash on initialization of classes with no init clause in

declare reductions.

If reduction clause is applied to instance of class with user-defined
reduction operation without initialization clause, it may cause a crash.
Patch fixes this issue.

llvm-svn: 267695

1 files changed, 3 insertions, 3 deletions

diff --git a/clang/lib/CodeGen/CGStmtOpenMP.cpp b/clang/lib/CodeGen/CGStmtOpenMP.cpp
index 5bcf0fa4187..78e8c691e00 100644
--- a/clang/lib/CodeGen/CGStmtOpenMP.cpp
+++ b/clang/lib/CodeGen/CGStmtOpenMP.cpp
@@ -481,7 +481,7 @@ static void EmitOMPAggregateInit(CodeGenFunction &CGF, Address DestAddr,
   // Emit copy.
   {
     CodeGenFunction::RunCleanupsScope InitScope(CGF);
-    if (DRD) {
+    if (DRD && (DRD->getInitializer() || !Init)) {
       emitInitWithReductionInitializer(CGF, DRD, Init, DestElementCurrent,
                                        SrcElementCurrent, ElementTy);
     } else
@@ -993,7 +993,7 @@ void CodeGenFunction::EmitOMPReductionClauseInit(
               // Emit private VarDecl with reduction init.
               AutoVarEmission Emission = EmitAutoVarAlloca(*PrivateVD);
               auto Addr = Emission.getAllocatedAddress();
-              if (DRD) {
+              if (DRD && (DRD->getInitializer() || !PrivateVD->hasInit())) {
                 emitInitWithReductionInitializer(*this, DRD, *IRed, Addr,
                                                  ASELValue.getAddress(),
                                                  ASELValue.getType());
@@ -1075,7 +1075,7 @@ void CodeGenFunction::EmitOMPReductionClauseInit(
                 // Emit private VarDecl with reduction init.
                 AutoVarEmission Emission = EmitAutoVarAlloca(*PrivateVD);
                 auto Addr = Emission.getAllocatedAddress();
-                if (DRD) {
+                if (DRD && (DRD->getInitializer() || !PrivateVD->hasInit())) {
                   emitInitWithReductionInitializer(*this, DRD, *IRed, Addr,
                                                    OriginalAddr,
                                                    PrivateVD->getType());