Unbreak cpp backend: upgrade output due to change in APInt API

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54942 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/CppBackend/CPPBackend.cpp b/lib/Target/CppBackend/CPPBackend.cpp
index b359659..fc5be98 100644
--- a/lib/Target/CppBackend/CPPBackend.cpp
+++ b/lib/Target/CppBackend/CPPBackend.cpp
@@ -732,9 +732,10 @@
       return;
     }
     if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) {
+      std::string constValue = CI->getValue().toString(10, true);
       Out << "ConstantInt* " << constName << " = ConstantInt::get(APInt("
           << cast<IntegerType>(CI->getType())->getBitWidth() << ",  \""
-          << CI->getValue() << "\", 10));";
+          <<  constValue << "\", " << constValue.length() << ", 10));";
     } else if (isa<ConstantAggregateZero>(CV)) {
       Out << "ConstantAggregateZero* " << constName
           << " = ConstantAggregateZero::get(" << typeName << ");";