1 files changed, 23 insertions, 1 deletions
diff --git a/clang/lib/Tooling/Tooling.cpp b/clang/lib/Tooling/Tooling.cpp
index 0aae4906099..254cc8b7e89 100644
--- a/clang/lib/Tooling/Tooling.cpp
+++ b/clang/lib/Tooling/Tooling.cpp
@@ -91,7 +91,29 @@ static const llvm::opt::ArgStringList *getCC1Arguments(
   // We expect to get back exactly one Command job, if we didn't something
   // failed. Extract that job from the Compilation.
   const driver::JobList &Jobs = Compilation->getJobs();
-  if (Jobs.size() != 1 || !isa<driver::Command>(*Jobs.begin())) {
+  const driver::ActionList &Actions = Compilation->getActions();
+  bool OffloadCompilation = false;
+  if (Jobs.size() > 1) {
+    for (auto A : Actions){
+      // On MacOSX real actions may end up being wrapped in BindArchAction
+      if (isa<driver::BindArchAction>(A))
+        A = *A->input_begin();
+      if (isa<driver::OffloadAction>(A)) {
+        // Offload compilation has 2 top-level actions, one (at the front) is
+        // the original host compilation and the other is offload action
+        // composed of at least one device compilation. For such case, general
+        // tooling will consider host-compilation only. For tooling on device
+        // compilation, device compilation only option, such as
+        // `--cuda-device-only`, needs specifying.
+        assert(Actions.size() == 2);
+        assert(isa<driver::CompileJobAction>(Actions.front()));
+        OffloadCompilation = true;
+        break;
+      }
+    }
+  }
+  if (Jobs.size() == 0 || !isa<driver::Command>(*Jobs.begin()) ||
+      (Jobs.size() > 1 && !OffloadCompilation)) {
     SmallString<256> error_msg;
     llvm::raw_svector_ostream error_stream(error_msg);
     Jobs.Print(error_stream, "; ", true);