1 files changed, 3 insertions, 3 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 9dac51f33cd..bdecb8b37c4 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -4049,10 +4049,10 @@ SDValue SelectionDAG::getNode(unsigned Opcode, const SDLoc &DL, EVT VT,
     break;
   case ISD::FNEG:
     // -(X-Y) -> (Y-X) is unsafe because when X==Y, -0.0 != +0.0
-    if (getTarget().Options.UnsafeFPMath && OpOpcode == ISD::FSUB)
-      // FIXME: FNEG has no fast-math-flags to propagate; use the FSUB's flags?
+    if ((getTarget().Options.UnsafeFPMath || Flags.hasNoSignedZeros()) &&
+        OpOpcode == ISD::FSUB)
       return getNode(ISD::FSUB, DL, VT, Operand.getOperand(1),
-                     Operand.getOperand(0), Operand.getNode()->getFlags());
+                     Operand.getOperand(0), Flags);
     if (OpOpcode == ISD::FNEG)  // --X -> X
       return Operand.getOperand(0);
     break;