Lower varargs correctly in deopt bundle lowering

Earlier we were ignoring varargs in LowerCallSiteWithDeoptBundle because
populateCallLoweringInfo does not set CallLoweringInfo::IsVarArg.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@264354 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed