Fixed inclusion of M_PI fow MinGW-w64
Patch by KOLANICH
llvm-svn: 346000
diff --git a/llvm/lib/Target/AMDGPU/SIISelLowering.cpp b/llvm/lib/Target/AMDGPU/SIISelLowering.cpp
index 55b1a87..88e07b9 100644
--- a/llvm/lib/Target/AMDGPU/SIISelLowering.cpp
+++ b/llvm/lib/Target/AMDGPU/SIISelLowering.cpp
@@ -12,7 +12,7 @@
//
//===----------------------------------------------------------------------===//
-#ifdef _MSC_VER
+#if defined(_MSC_VER) || defined(__MINGW32__)
// Provide M_PI.
#define _USE_MATH_DEFINES
#endif