Remove unneeded zero arrays.

llvm-svn: 120910
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 747c4af..7e408a0 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -2356,10 +2356,9 @@
       return getConstant(APInt(Val).zextOrTrunc(VT.getSizeInBits()), VT);
     case ISD::UINT_TO_FP:
     case ISD::SINT_TO_FP: {
-      const uint64_t zero[] = {0, 0};
       // No compile time operations on ppcf128.
       if (VT == MVT::ppcf128) break;
-      APFloat apf = APFloat(APInt(VT.getSizeInBits(), 2, zero));
+      APFloat apf(APInt::getNullValue(VT.getSizeInBits()));
       (void)apf.convertFromAPInt(Val,
                                  Opcode==ISD::SINT_TO_FP,
                                  APFloat::rmNearestTiesToEven);