diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index 4c6ae24..0223479 100644
--- a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -2176,8 +2176,7 @@
     return false;
   // GNU sin/cos functions set errno while sincos does not. Therefore
   // combining sin and cos is only safe if unsafe-fpmath is enabled.
-  bool isGNU = Triple(TM.getTargetTriple()).getEnvironment() == Triple::GNU;
-  if (isGNU && !TM.Options.UnsafeFPMath)
+  if (TM.getTargetTriple().isGNUEnvironment() && !TM.Options.UnsafeFPMath)
     return false;
   return true;
 }