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Momchil Velikov
f4f16f170b
stack
This patch makes sure that if we tag some memory, we untag that memory before
the function returns/throws via any exit, reachable from the tag operation. For
that we place the untag operation either at:
a) the lifetime end call for the alloca, if that call post-dominates the
lifetime start call (where the tag operation is placed), or it (the
lifetime end call) dominates all reachable exits, otherwise
b) at the reachable exits
Differential Revision: https://reviews.llvm.org/D68469
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@374182 91177308-0d34-0410-b5e6-96231b3b80d8