From 2eaec51f6620fe3a41c99ab1e43dc1d62b975953 Mon Sep 17 00:00:00 2001
From: Simon Atanasyan <satanasyan@mips.com>
Date: Sat, 1 Dec 2012 18:27:21 +0000
Subject: [PATCH] [MIPS] Add -mxgot/-mno-xgot command line options to
 enable/disable support of GOT larger than 64k.

llvm-svn: 169098
---
 clang/include/clang/Driver/Options.td |  2 ++
 clang/lib/Driver/Tools.cpp            |  7 +++++++
 clang/test/Driver/mips-features.c     | 12 ++++++++++++
 3 files changed, 21 insertions(+)

diff --git a/clang/include/clang/Driver/Options.td b/clang/include/clang/Driver/Options.td
index 932e78943d5c..8e31cab3567c 100644
--- a/clang/include/clang/Driver/Options.td
+++ b/clang/include/clang/Driver/Options.td
@@ -875,6 +875,8 @@ def mf16c : Flag<["-"], "mf16c">, Group<m_x86_Features_Group>;
 def mrtm : Flag<["-"], "mrtm">, Group<m_x86_Features_Group>;
 def mips16 : Flag<["-"], "mips16">, Group<m_Group>;
 def mno_mips16 : Flag<["-"], "mno-mips16">, Group<m_Group>;
+def mxgot : Flag<["-"], "mxgot">, Group<m_Group>;
+def mno_xgot : Flag<["-"], "mno-xgot">, Group<m_Group>;
 def mdsp : Flag<["-"], "mdsp">, Group<m_Group>;
 def mno_dsp : Flag<["-"], "mno-dsp">, Group<m_Group>;
 def mdspr2 : Flag<["-"], "mdspr2">, Group<m_Group>;
diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
index 89e7d8f16c1e..16218e1fc542 100644
--- a/clang/lib/Driver/Tools.cpp
+++ b/clang/lib/Driver/Tools.cpp
@@ -990,6 +990,13 @@ void Clang::AddMIPSTargetArgs(const ArgList &Args,
                    options::OPT_mdspr2, options::OPT_mno_dspr2,
                    "dspr2");
 
+  if (Arg *A = Args.getLastArg(options::OPT_mxgot, options::OPT_mno_xgot)) {
+    if (A->getOption().matches(options::OPT_mxgot)) {
+      CmdArgs.push_back("-mllvm");
+      CmdArgs.push_back("-mxgot");
+    }
+  }
+
   if (Arg *A = Args.getLastArg(options::OPT_G)) {
     StringRef v = A->getValue();
     CmdArgs.push_back("-mllvm");
diff --git a/clang/test/Driver/mips-features.c b/clang/test/Driver/mips-features.c
index 28048e7740f2..3bebffc11bb3 100644
--- a/clang/test/Driver/mips-features.c
+++ b/clang/test/Driver/mips-features.c
@@ -38,6 +38,18 @@
 // RUN:   | FileCheck --check-prefix=CHECK-NOMDSPR2 %s
 // CHECK-NOMDSPR2: "-target-feature" "-dspr2"
 //
+// -mxgot
+// RUN: %clang -target mips-linux-gnu -### -c %s \
+// RUN:     -mno-xgot -mxgot 2>&1 \
+// RUN:   | FileCheck --check-prefix=CHECK-XGOT %s
+// CHECK-XGOT: "-mllvm" "-mxgot"
+//
+// -mno-xgot
+// RUN: %clang -target mips-linux-gnu -### -c %s \
+// RUN:     -mxgot -mno-xgot 2>&1 \
+// RUN:   | FileCheck --check-prefix=CHECK-NOXGOT %s
+// CHECK-NOXGOT-NOT: "-mllvm" "-mxgot"
+//
 // -G
 // RUN: %clang -target mips-linux-gnu -### -c %s \
 // RUN:     -G 16 2>&1 \