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dae28732f4
We've rejected these kinds of functions since r28405 in 2006 because it's impossible to lower the return of a callee cleanup varargs function. However there are lots of legal ways to leave such a function without returning, such as aborting. Today we can leave a function with a musttail call to another function with the correct prototype, and everything works out. I'm removing the verifier check declaring that a normal return from such a function is UB. Reviewed By: nlewycky Differential Revision: http://reviews.llvm.org/D5059 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216779 91177308-0d34-0410-b5e6-96231b3b80d8