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-rw-r--r--lib/compiler/src/v3_codegen.erl11
1 files changed, 10 insertions, 1 deletions
diff --git a/lib/compiler/src/v3_codegen.erl b/lib/compiler/src/v3_codegen.erl
index 1f05b4f6b4..948937c438 100644
--- a/lib/compiler/src/v3_codegen.erl
+++ b/lib/compiler/src/v3_codegen.erl
@@ -1190,7 +1190,12 @@ trap_bif(_, _, _) -> false.
bif_cg(bs_context_to_binary=Instr, [Src0], [], Le, Vdb, Bef, St0) ->
[Src] = cg_reg_args([Src0], Bef),
- {[{Instr,Src}],clear_dead(Bef, Le#l.i, Vdb), St0};
+ case is_register(Src) of
+ false ->
+ {[],clear_dead(Bef, Le#l.i, Vdb), St0};
+ true ->
+ {[{Instr,Src}],clear_dead(Bef, Le#l.i, Vdb), St0}
+ end;
bif_cg(dsetelement, [Index0,Tuple0,New0], _Rs, Le, Vdb, Bef, St0) ->
[New,Tuple,{integer,Index1}] = cg_reg_args([New0,Tuple0,Index0], Bef),
Index = Index1-1,
@@ -2019,6 +2024,10 @@ fetch_stack(V, [_|Stk], I) -> fetch_stack(V, Stk, I+1).
on_stack(V, Stk) -> keymember(V, 1, Stk).
+is_register({x,_}) -> true;
+is_register({yy,_}) -> true;
+is_register(_) -> false.
+
%% put_catch(CatchTag, Stack) -> Stack'
%% drop_catch(CatchTag, Stack) -> Stack'
%% Special interface for putting and removing catch tags, to ensure that