Rafael Espindola 35b78fd04c Remove tail marker when changing an argument to an alloca.
Argument promotion can replace an argument of a call with an alloca. This
requires clearing the tail marker as it is very likely that the callee is now
using an alloca in the caller.

This fixes pr14710.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199909 91177308-0d34-0410-b5e6-96231b3b80d8
2014-01-23 17:19:42 +00:00
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