1 files changed, 18 insertions, 2 deletions
diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
index 48c65ad..9f3522a 100644
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -2544,6 +2544,24 @@ static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
       LangStd = OpenCLLangStd;
   }
 
+  Opts.SYCL = Args.hasArg(options::OPT_fsycl);
+  Opts.SYCLIsDevice = Opts.SYCL && Args.hasArg(options::OPT_fsycl_is_device);
+  if (Opts.SYCL) {
+    // -sycl-std applies to any SYCL source, not only those containing kernels,
+    // but also those using the SYCL API
+    if (const Arg *A = Args.getLastArg(OPT_sycl_std_EQ)) {
+      Opts.SYCLVersion = llvm::StringSwitch<unsigned>(A->getValue())
+                             .Cases("2017", "1.2.1", "121", "sycl-1.2.1", 2017)
+                             .Default(0U);
+
+      if (Opts.SYCLVersion == 0U) {
+        // User has passed an invalid value to the flag, this is an error
+        Diags.Report(diag::err_drv_invalid_value)
+            << A->getAsString(Args) << A->getValue();
+      }
+    }
+  }
+
   Opts.IncludeDefaultHeader = Args.hasArg(OPT_finclude_default_header);
   Opts.DeclareOpenCLBuiltins = Args.hasArg(OPT_fdeclare_opencl_builtins);
 
@@ -3145,8 +3163,6 @@ static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
           << Opts.OMPHostIRFile;
   }
 
-  Opts.SYCLIsDevice = Args.hasArg(options::OPT_fsycl_is_device);
-
   // Set CUDA mode for OpenMP target NVPTX if specified in options
   Opts.OpenMPCUDAMode = Opts.OpenMPIsDevice && T.isNVPTX() &&
                         Args.hasArg(options::OPT_fopenmp_cuda_mode);