beam_ssa_opt: Simplify the ssa_opt_tail_phis optimization
beam_ssa_opt: Simplify the ssa_opt_tail_phis optimization

When moving code from a tail block with a phi node to the
predecessors, it used to be necessary to check that the code was not
moved to a block that called an exit BIF. Since 8a05c30353a6 this is
no longer necessary because every call is followed by a succeeded:body
instruction and a two-way branch that can't end up in a phi node.

rlipscombe/otp,ferd/otp,erlang/otp,potatosalad/otp,dumbbell/otp,bjorng/otp,dgud/otp,ferd/otp,getong/otp,getong/otp,dgud/otp,isvilen/otp,mikpe/otp,emacsmirror/erlang,kvakvs/otp,lrascao/otp,bjorng/otp,emacsmirror/erlang,dgud/otp,kvakvs/otp,rlipscombe/otp,bjorng/otp,electricimp/otp,rlipscombe/otp,rlipscombe/otp,potatosalad/otp,mikpe/otp,potatosalad/otp,dumbbell/otp,g-andrade/otp,getong/otp,dumbbell/otp,emacsmirror/erlang,lrascao/otp,lrascao/otp,jj1bdx/otp,electricimp/otp,vinoski/otp,erlang/otp,kvakvs/otp,mikpe/otp,g-andrade/otp,rlipscombe/otp,kvakvs/otp,getong/otp,jj1bdx/otp,bjorng/otp,bjorng/otp,dumbbell/otp,dumbbell/otp,emacsmirror/erlang,dgud/otp,isvilen/otp,mikpe/otp,isvilen/otp,vladdu/otp,ferd/otp,jj1bdx/otp,jj1bdx/otp,vinoski/otp,lrascao/otp,bjorng/otp,getong/otp,rlipscombe/otp,isvilen/otp,potatosalad/otp,getong/otp,vinoski/otp,electricimp/otp,getong/otp,kvakvs/otp,jj1bdx/otp,ferd/otp,g-andrade/otp,getong/otp,uabboli/otp,vinoski/otp,ferd/otp,dumbbell/otp,mikpe/otp,vladdu/otp,vinoski/otp,vladdu/otp,vladdu/otp,electricimp/otp,uabboli/otp,g-andrade/otp,emacsmirror/erlang,erlang/otp,dgud/otp,isvilen/otp,uabboli/otp,uabboli/otp,erlang/otp,lrascao/otp,rlipscombe/otp,electricimp/otp,potatosalad/otp,potatosalad/otp,jj1bdx/otp,emacsmirror/erlang,uabboli/otp,vinoski/otp,uabboli/otp,getong/otp,mikpe/otp,isvilen/otp,vinoski/otp,getong/otp,lrascao/otp,g-andrade/otp,ferd/otp,dgud/otp,erlang/otp,emacsmirror/erlang,electricimp/otp,potatosalad/otp,vinoski/otp,g-andrade/otp,kvakvs/otp,mikpe/otp,jj1bdx/otp,ferd/otp,g-andrade/otp,potatosalad/otp,emacsmirror/erlang,erlang/otp,vladdu/otp,electricimp/otp,kvakvs/otp,dumbbell/otp,dgud/otp,electricimp/otp,emacsmirror/erlang,erlang/otp,ferd/otp,vladdu/otp,erlang/otp,erlang/otp,dumbbell/otp,potatosalad/otp,vinoski/otp,dumbbell/otp,rlipscombe/otp,bjorng/otp,bjorng/otp,dgud/otp,emacsmirror/erlang,isvilen/otp,mikpe/otp,vinoski/otp,vladdu/otp,g-andrade/otp,isvilen/otp,mikpe/otp,jj1bdx/otp,g-andrade/otp,vladdu/otp,bjorng/otp,bjorng/otp,g-andrade/otp,isvilen/otp,jj1bdx/otp,electricimp/otp,uabboli/otp,ferd/otp,lrascao/otp,isvilen/otp,kvakvs/otp,rlipscombe/otp,potatosalad/otp,uabboli/otp,erlang/otp,mikpe/otp,lrascao/otp,lrascao/otp,uabboli/otp,jj1bdx/otp,dgud/otp,dumbbell/otp,vladdu/otp,dgud/otp,rlipscombe/otp,kvakvs/otp