Remove unneeded zero arrays.

llvm-svn: 120910
diff --git a/llvm/lib/VMCore/ConstantFold.cpp b/llvm/lib/VMCore/ConstantFold.cpp
index 9a91daf..eb58f79 100644
--- a/llvm/lib/VMCore/ConstantFold.cpp
+++ b/llvm/lib/VMCore/ConstantFold.cpp
@@ -637,9 +637,7 @@
   case Instruction::SIToFP:
     if (ConstantInt *CI = dyn_cast<ConstantInt>(V)) {
       APInt api = CI->getValue();
-      const uint64_t zero[] = {0, 0};
-      APFloat apf = APFloat(APInt(DestTy->getPrimitiveSizeInBits(),
-                                  2, zero));
+      APFloat apf(APInt::getNullValue(DestTy->getPrimitiveSizeInBits()));
       (void)apf.convertFromAPInt(api, 
                                  opc==Instruction::SIToFP,
                                  APFloat::rmNearestTiesToEven);