[OPENMP] Force OpenMP 4.5 when compiling for offloading.

If the user requested compilation for OpenMP with the offloading
support, force the version of the OpenMP standard to 4.5 by default.

llvm-svn: 338032

1 files changed, 6 insertions, 4 deletions

diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
index 5878cce772b..78e6babd025 100644
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -2594,13 +2594,15 @@ static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
       Opts.OpenMP && !Args.hasArg(options::OPT_fnoopenmp_use_tls);
   Opts.OpenMPIsDevice =
       Opts.OpenMP && Args.hasArg(options::OPT_fopenmp_is_device);
+  bool IsTargetSpecified =
+      Opts.OpenMPIsDevice || Args.hasArg(options::OPT_fopenmp_targets_EQ);
 
   if (Opts.OpenMP || Opts.OpenMPSimd) {
-    if (int Version =
-            getLastArgIntValue(Args, OPT_fopenmp_version_EQ,
-                               IsSimdSpecified ? 45 : Opts.OpenMP, Diags))
+    if (int Version = getLastArgIntValue(
+            Args, OPT_fopenmp_version_EQ,
+            (IsSimdSpecified || IsTargetSpecified) ? 45 : Opts.OpenMP, Diags))
       Opts.OpenMP = Version;
-    else if (IsSimdSpecified)
+    else if (IsSimdSpecified || IsTargetSpecified)
       Opts.OpenMP = 45;
     // Provide diagnostic when a given target is not expected to be an OpenMP
     // device or host.