Add support for -fpcc-struct-return. Patch by Arthur O'Dwyer!

llvm-svn: 184166

1 files changed, 12 insertions, 0 deletions

diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
index add0c623aa2..373939cd933 100644
--- a/clang/lib/Driver/Tools.cpp
+++ b/clang/lib/Driver/Tools.cpp
@@ -2165,6 +2165,18 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA,
     CmdArgs.push_back(A->getValue());
   }
 
+  if (Arg *A = Args.getLastArg(options::OPT_fpcc_struct_return, options::OPT_freg_struct_return)) {
+    if (getToolChain().getTriple().getArch() != llvm::Triple::x86) {
+      D.Diag(diag::err_drv_unsupported_opt_for_target)
+        << A->getSpelling() << getToolChain().getTriple().str();
+    } else if (A->getOption().matches(options::OPT_fpcc_struct_return)) {
+      CmdArgs.push_back("-fpcc-struct-return");
+    } else {
+      assert(A->getOption().matches(options::OPT_freg_struct_return));
+      CmdArgs.push_back("-freg-struct-return");
+    }
+  }
+
   if (Args.hasFlag(options::OPT_mrtd, options::OPT_mno_rtd, false))
     CmdArgs.push_back("-mrtd");