diff options
Diffstat (limited to 'lib/compiler/src/beam_utils.erl')
| -rw-r--r-- | lib/compiler/src/beam_utils.erl | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/lib/compiler/src/beam_utils.erl b/lib/compiler/src/beam_utils.erl index fca13497ba..a0132b99e3 100644 --- a/lib/compiler/src/beam_utils.erl +++ b/lib/compiler/src/beam_utils.erl @@ -468,6 +468,22 @@ check_liveness(R, [{loop_rec_end,{f,Fail}}|_], St) -> check_liveness_at(R, Fail, St); check_liveness(R, [{line,_}|Is], St) -> check_liveness(R, Is, St); +check_liveness(R, [{get_map_elements,{f,Fail},S,{list,L}}|Is], St0) -> + {Ss,Ds} = split_even(L), + case member(R, [S|Ss]) of + true -> + {used,St0}; + false -> + case check_liveness_at(R, Fail, St0) of + {killed,St}=Killed -> + case member(R, Ds) of + true -> Killed; + false -> check_liveness(R, Is, St) + end; + Other -> + Other + end + end; check_liveness(_R, Is, St) when is_list(Is) -> %% case Is of %% [I|_] -> |