From 7a3c3e9a155028de59aed3b6df2e1ff316ba11b0 Mon Sep 17 00:00:00 2001
From: NAKAMURA Takumi <geek4civic@gmail.com>
Date: Sun, 20 Jul 2014 11:15:07 +0000
Subject: [PATCH] SIISelLowering.cpp: Define _USE_MATH_DEFINES to let M_PI
 provided on MS <cmath>.

FIXME: Would it be better to move it into configure?

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213477 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/R600/SIISelLowering.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/lib/Target/R600/SIISelLowering.cpp b/lib/Target/R600/SIISelLowering.cpp
index e6c1614eb27..b3e3997a305 100644
--- a/lib/Target/R600/SIISelLowering.cpp
+++ b/lib/Target/R600/SIISelLowering.cpp
@@ -12,6 +12,12 @@
 //
 //===----------------------------------------------------------------------===//
 
+#ifdef _MSC_VER
+// Provide M_PI.
+#define _USE_MATH_DEFINES
+#include <cmath>
+#endif
+
 #include "SIISelLowering.h"
 #include "AMDGPU.h"
 #include "AMDGPUIntrinsicInfo.h"