simplify this method

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27338 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/llvm/CodeGen/SelectionDAGNodes.h b/include/llvm/CodeGen/SelectionDAGNodes.h
index cf5955d63140d4ac6e04082c382d65ecadb873b2..0076a637b2afce9a82e928abbd5f9957cd0c0f76 100644 (file)
--- a/include/llvm/CodeGen/SelectionDAGNodes.h
+++ b/include/llvm/CodeGen/SelectionDAGNodes.h
@@ -1076,9 +1076,7 @@ public:
 
   bool isNullValue() const { return Value == 0; }
   bool isAllOnesValue() const {
-    int NumBits = MVT::getSizeInBits(getValueType(0));
-    if (NumBits == 64) return Value+1 == 0;
-    return Value == (1ULL << NumBits)-1;
+    return Value == MVT::getIntVTBitMask(getValueType(0));
   }
 
   static bool classof(const ConstantSDNode *) { return true; }