[OPENMP] Do not mark captured variables as artificial in debug info.

Captured variables should not be marked as artificial parameters in
outlined functions in debug info.

llvm-svn: 318843

1 files changed, 21 insertions, 3 deletions

diff --git a/clang/lib/CodeGen/CGStmtOpenMP.cpp b/clang/lib/CodeGen/CGStmtOpenMP.cpp
index 0863cc83aba..697367f7930 100644
--- a/clang/lib/CodeGen/CGStmtOpenMP.cpp
+++ b/clang/lib/CodeGen/CGStmtOpenMP.cpp
@@ -311,6 +311,16 @@ static llvm::Function *emitOutlinedFunctionPrologue(
       CD->param_begin(),
       std::next(CD->param_begin(), CD->getContextParamPosition()));
   auto I = FO.S->captures().begin();
+  FunctionDecl *DebugFunctionDecl = nullptr;
+  if (!FO.UIntPtrCastRequired) {
+    FunctionProtoType::ExtProtoInfo EPI;
+    DebugFunctionDecl = FunctionDecl::Create(
+        Ctx, Ctx.getTranslationUnitDecl(), FO.S->getLocStart(),
+        SourceLocation(), DeclarationName(), Ctx.VoidTy,
+        Ctx.getTrivialTypeSourceInfo(
+            Ctx.getFunctionType(Ctx.VoidTy, llvm::None, EPI)),
+        SC_Static, /*isInlineSpecified=*/false, /*hasWrittenPrototype=*/false);
+  }
   for (auto *FD : RD->fields()) {
     QualType ArgType = FD->getType();
     IdentifierInfo *II = nullptr;
@@ -338,9 +348,17 @@ static llvm::Function *emitOutlinedFunctionPrologue(
     }
     if (ArgType->isVariablyModifiedType())
       ArgType = getCanonicalParamType(Ctx, ArgType);
-    auto *Arg =
-        ImplicitParamDecl::Create(Ctx, /*DC=*/nullptr, FD->getLocation(), II,
-                                  ArgType, ImplicitParamDecl::Other);
+    VarDecl *Arg;
+    if (DebugFunctionDecl && (CapVar || I->capturesThis())) {
+      Arg = ParmVarDecl::Create(
+          Ctx, DebugFunctionDecl,
+          CapVar ? CapVar->getLocStart() : FD->getLocStart(),
+          CapVar ? CapVar->getLocation() : FD->getLocation(), II, ArgType,
+          /*TInfo=*/nullptr, SC_None, /*DefArg=*/nullptr);
+    } else {
+      Arg = ImplicitParamDecl::Create(Ctx, /*DC=*/nullptr, FD->getLocation(),
+                                      II, ArgType, ImplicitParamDecl::Other);
+    }
     Args.emplace_back(Arg);
     // Do not cast arguments if we emit function with non-original types.
     TargetArgs.emplace_back(