diff options
Diffstat (limited to 'lib/compiler/src')
| -rw-r--r-- | lib/compiler/src/cerl_inline.erl | 39 | ||||
| -rw-r--r-- | lib/compiler/src/v3_core.erl | 6 |
2 files changed, 34 insertions, 11 deletions
diff --git a/lib/compiler/src/cerl_inline.erl b/lib/compiler/src/cerl_inline.erl index 2e7554c1ff..c6de63c69f 100644 --- a/lib/compiler/src/cerl_inline.erl +++ b/lib/compiler/src/cerl_inline.erl @@ -52,7 +52,7 @@ clause_pats/1, clause_vars/1, concrete/1, cons_hd/1, cons_tl/1, data_arity/1, data_es/1, data_type/1, fun_body/1, fun_vars/1, get_ann/1, int_val/1, - is_c_atom/1, is_c_cons/1, is_c_fun/1, is_c_int/1, + is_c_atom/1, is_c_cons/1, is_c_fname/1, is_c_int/1, is_c_list/1, is_c_seq/1, is_c_tuple/1, is_c_var/1, is_data/1, is_literal/1, is_literal_term/1, let_arg/1, let_body/1, let_vars/1, letrec_body/1, letrec_defs/1, @@ -1578,7 +1578,7 @@ make_let_binding_1(R, E, S) -> %% completely. copy(R, Opnd, E, Ctxt, Env, S) -> - case is_c_var(E) of + case is_c_var(E) andalso not is_c_fname(E) of true -> %% The operand reduces to another variable - get its %% ref-structure and attempt to propagate further. @@ -1628,12 +1628,12 @@ copy_var(R, Ctxt, Env, S) -> end. copy_1(R, Opnd, E, Ctxt, Env, S) -> - %% Fun-expression (lambdas) are a bit special; they are copyable, - %% but should preferably not be duplicated, so they should not be - %% copy propagated except into application contexts, where they can - %% be inlined. - case is_c_fun(E) of - true -> + case type(E) of + 'fun' -> + %% Fun-expression (lambdas) are a bit special; they are copyable, + %% but should preferably not be duplicated, so they should not be + %% copy propagated except into application contexts, where they can + %% be inlined. case Ctxt of #app{} -> %% First test if the operand is "outer-pending"; if @@ -1649,7 +1649,28 @@ copy_1(R, Opnd, E, Ctxt, Env, S) -> _ -> residualize_var(R, S) end; - false -> + var -> + %% Variables at this point only refer to local functions; they are + %% copyable but can't appear in guards, so they should not be + %% copy propagated except into application contexts, where they can + %% be inlined. + case Ctxt of + #app{} -> + %% First test if the operand is "outer-pending"; if + %% so, don't inline. + case st__test_outer_pending(Opnd#opnd.loc, S) of + false -> + R1 = env__get(var_name(E), Opnd#opnd.env), + copy_var(R1, Ctxt, Env, S); + true -> + %% Cyclic reference forced inlining to stop + %% (avoiding infinite unfolding). + residualize_var(R, S) + end; + _ -> + residualize_var(R, S) + end; + _ -> %% We have no other cases to handle here residualize_var(R, S) end. diff --git a/lib/compiler/src/v3_core.erl b/lib/compiler/src/v3_core.erl index d6fdcb2b21..1195937d91 100644 --- a/lib/compiler/src/v3_core.erl +++ b/lib/compiler/src/v3_core.erl @@ -956,7 +956,8 @@ lc_tq(Line, E, [Fil0|Qs0], Mc, St0) -> args=[], clauses=[#iclause{anno=LAnno,pats=[], guard=Gs,body=Lps ++ [Lc]}], - fc=#iclause{anno=LAnno,pats=[],guard=[],body=[Mc]}}, + fc=#iclause{anno=LAnno#a{anno=[compiler_generated|LA]}, + pats=[],guard=[],body=[Mc]}}, [],St2}; false -> {Lc,Lps,St1} = lc_tq(Line, E, Qs0, Mc, St0), @@ -1101,7 +1102,8 @@ bc_tq1(Line, E, [Fil0|Qs0], AccVar, St0) -> clauses=[#iclause{anno=LAnno, pats=[], guard=Gs,body=Bps ++ [Bc]}], - fc=#iclause{anno=LAnno,pats=[],guard=[],body=[AccVar]}}, + fc=#iclause{anno=LAnno#a{anno=[compiler_generated|LA]}, + pats=[],guard=[],body=[AccVar]}}, [],St}; false -> {Bc,Bps,St1} = bc_tq1(Line, E, Qs0, AccVar, St0), |