[OpenCL] Allow -cl-std and other standard -cl- options in driver

Allow -cl-std and other standard -cl- options from cc1 to driver.

Added a test for the options moved.

Patch by Aaron En Ye Shi.

Differential Revision: http://reviews.llvm.org/D21031

llvm-svn: 274150

1 files changed, 13 insertions, 0 deletions

diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
index 0fc6e3a9c34..1abe4ff863d 100644
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -41,6 +41,7 @@
 #include "llvm/Support/Path.h"
 #include "llvm/Support/Process.h"
 #include "llvm/Target/TargetOptions.h"
+#include "llvm/Support/ScopedPrinter.h"
 #include <atomic>
 #include <memory>
 #include <sys/stat.h>
@@ -1671,6 +1672,18 @@ static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
       LangStd = OpenCLLangStd;
   }
 
+  // -cl-strict-aliasing needs to emit diagnostic in the case where CL > 1.0.
+  // This option should be deprecated for CL > 1.0 because
+  // this option was added for compatibility with OpenCL 1.0.
+  if (const Arg *A = Args.getLastArg(OPT_cl_strict_aliasing))
+    if (Opts.OpenCLVersion > 100) {
+      std::string VerSpec = llvm::to_string(Opts.OpenCLVersion / 100) +
+                            std::string (".") +
+                            llvm::to_string((Opts.OpenCLVersion % 100) / 10);
+      Diags.Report(diag::warn_option_invalid_ocl_version)
+      << VerSpec << A->getAsString(Args);
+    }
+
   Opts.IncludeDefaultHeader = Args.hasArg(OPT_finclude_default_header);
 
   llvm::Triple T(TargetOpts.Triple);