address comment

Author: diggerlin

llvm/include/llvm/CodeGen/SelectionDAGNodes.h

@@ -213,7 +213,6 @@ class SDValue {
   inline bool isTargetOpcode() const;
   inline bool isMachineOpcode() const;
   inline bool isUndef() const;
-  inline bool isPoison() const;
   inline unsigned getMachineOpcode() const;
   inline const DebugLoc &getDebugLoc() const;
   inline void dump() const;
@@ -698,9 +697,6 @@ END_TWO_BYTE_PACK()
     return NodeType == ISD::UNDEF || NodeType == ISD::POISON;
   }
 
-  /// Returns true if the node type is POISON.
-  bool isPoison() const { return NodeType == ISD::POISON; }
-
   /// Test if this node is a memory intrinsic (with valid pointer information).
   bool isMemIntrinsic() const { return SDNodeBits.IsMemIntrinsic; }
 
@@ -1274,8 +1270,6 @@ inline bool SDValue::isUndef() const {
   return Node->isUndef();
 }
 
-inline bool SDValue::isPoison() const { return Node->isPoison(); }
-
 inline bool SDValue::use_empty() const {
   return !Node->hasAnyUseOfValue(ResNo);
 }

llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp

@@ -6242,7 +6242,7 @@ SDValue SelectionDAG::getNode(unsigned Opcode, const SDLoc &DL, EVT VT,
       return getNode(OpOpcode, DL, VT, N1.getOperand(0), Flags);
     }
 
-    if (N1.isPoison())
+    if (OpOpcode == ISD::POISON)
       return getPOISON(VT);
 
     if (N1.isUndef())
@@ -6266,7 +6266,7 @@ SDValue SelectionDAG::getNode(unsigned Opcode, const SDLoc &DL, EVT VT,
       return getNode(ISD::ZERO_EXTEND, DL, VT, N1.getOperand(0), Flags);
     }
 
-    if (N1.isPoison())
+    if (OpOpcode == ISD::POISON)
       return getPOISON(VT);
 
     if (N1.isUndef())