From ec4b1c194b5ba1961f1da88af1a1b06b8d170f1c Mon Sep 17 00:00:00 2001
From: Simon Atanasyan <satanasyan@mips.com>
Date: Mon, 27 Aug 2012 20:55:56 +0000
Subject: [PATCH] MIPS: Use -G option to specify MIPS section threshold.
 Translate it to the -mllvm -mips-ssection-threshold=<value> pair and pass to
 the frontend. The patch suggested by Carl Norum.

llvm-svn: 162697
---
 clang/lib/Driver/Tools.cpp        | 7 +++++++
 clang/test/Driver/mips-features.c | 6 ++++++
 2 files changed, 13 insertions(+)

diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
index 11429131d768..ccfa69a739b4 100644
--- a/clang/lib/Driver/Tools.cpp
+++ b/clang/lib/Driver/Tools.cpp
@@ -941,6 +941,13 @@ void Clang::AddMIPSTargetArgs(const ArgList &Args,
   AddTargetFeature(Args, CmdArgs,
                    options::OPT_mdspr2, options::OPT_mno_dspr2,
                    "dspr2");
+
+  if (Arg *A = Args.getLastArg(options::OPT_G)) {
+    StringRef v = A->getValue(Args);
+    CmdArgs.push_back("-mllvm");
+    CmdArgs.push_back(Args.MakeArgString("-mips-ssection-threshold=" + v));
+    A->claim();
+  }
 }
 
 /// getPPCTargetCPU - Get the (LLVM) name of the PowerPC cpu we are targeting.
diff --git a/clang/test/Driver/mips-features.c b/clang/test/Driver/mips-features.c
index 5be268318886..28048e7740f2 100644
--- a/clang/test/Driver/mips-features.c
+++ b/clang/test/Driver/mips-features.c
@@ -37,3 +37,9 @@
 // RUN:     -mdspr2 -mno-dspr2 2>&1 \
 // RUN:   | FileCheck --check-prefix=CHECK-NOMDSPR2 %s
 // CHECK-NOMDSPR2: "-target-feature" "-dspr2"
+//
+// -G
+// RUN: %clang -target mips-linux-gnu -### -c %s \
+// RUN:     -G 16 2>&1 \
+// RUN:   | FileCheck --check-prefix=CHECK-MIPS-G %s
+// CHECK-MIPS-G: "-mllvm" "-mips-ssection-threshold=16"