From 1fe2a8c87ee6d18682ffa6d8a07e2ed30bfb6d35 Mon Sep 17 00:00:00 2001
From: John McCall <rjmccall@apple.com>
Date: Tue, 18 Jun 2013 02:46:29 +0000
Subject: Add support for -fpcc-struct-return.  Patch by Arthur O'Dwyer!

llvm-svn: 184166
---
 clang/lib/Frontend/CompilerInvocation.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'clang/lib/Frontend/CompilerInvocation.cpp')

diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
index 4e62fda..1407e10 100644
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -478,6 +478,15 @@ static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK,
       Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val;
   }
 
+  if (Arg *A = Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return)) {
+    if (A->getOption().matches(OPT_fpcc_struct_return)) {
+      Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack);
+    } else {
+      assert(A->getOption().matches(OPT_freg_struct_return));
+      Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs);
+    }
+  }
+
   return Success;
 }
 
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