File 2362-beam_disasm-Resolve-bs_start_match3-as-tes... of Package erlang

Overview Repositories Revisions Requests Users Attributes Meta

File 2362-beam_disasm-Resolve-bs_start_match3-as-test-5.patch of Package erlang (Revision b1ddc78860c1f178c6361caad002e77d)

Currently displaying revision b1ddc78860c1f178c6361caad002e77d , Show latest

From 322f33ebb3f4b887fb94edd4467d8d32af07ea55 Mon Sep 17 00:00:00 2001
From: Michael Davis <mcarsondavis@gmail.com>
Date: Thu, 10 Nov 2022 11:19:06 -0600
Subject: [PATCH 2/8] beam_disasm: Resolve bs_start_match3 as test/5

This translation matches the expected format in `beam_validator:vi/2`
and the translation in `beam_ssa_codegen:cg_block/3` as well as the
output of `erl -S`. For example:

kind(<<"a">>) -> a;
    kind(<<"b">>) -> b.

Has the asm:

{function, kind, 1, 2}.
      {label,1}.
        {line,[{location,"start_match.erl",3}]}.
        {func_info,{atom,start_match},{atom,kind},1}.
      {label,2}.
        {'%',{var_info,{x,0},[accepts_match_context]}}.
        {test,bs_start_match3,{f,1},1,[{x,0}],{x,1}}.
        {bs_get_position,{x,1},{x,0},2}.
        {bs_match,{f,5},
                  {x,1},
                  {commands,[{ensure_at_least,8,1},
                             {integer,2,{literal,[]},8,1,{x,2}}]}}.
        {select_val,{tr,{x,2},{t_integer,{0,255}}},
                    {f,5},
                    {list,[{integer,97},{f,4},{integer,98},{f,3}]}}.
      {label,3}.
        {bs_match,{f,5},{x,1},{commands,[{ensure_exactly,0}]}}.
        {move,{atom,b},{x,0}}.
        return.
      {label,4}.
        {bs_match,{f,5},{x,1},{commands,[{ensure_exactly,0}]}}.
        {move,{atom,a},{x,0}}.
        return.
      {label,5}.
        {bs_set_position,{x,1},{x,0}}.
        {bs_get_tail,{x,1},{x,0},2}.
        {jump,{f,1}}.
---
 lib/compiler/src/beam_disasm.erl | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/compiler/src/beam_disasm.erl b/lib/compiler/src/beam_disasm.erl
index bd48b40c4e..485cab4c5b 100644
--- a/lib/compiler/src/beam_disasm.erl
+++ b/lib/compiler/src/beam_disasm.erl
@@ -1222,8 +1222,8 @@ resolve_inst({get_tl,[Src,Dst]},_,_,_) ->
 resolve_inst({put_tuple2,[Dst,{{z,1},{u,_},List0}]},_,_,_) ->
     List = resolve_args(List0),
     {put_tuple2,Dst,{list,List}};
-resolve_inst({bs_start_match3,[Fail,Bin,Live,Dst]},_,_,_) ->
-    {bs_start_match3,Fail,Bin,Live,Dst};
+resolve_inst({bs_start_match3=I,[Fail,Bin,{u,Live},Dst]},_,_,_) ->
+    {test,I,Fail,Live,[Bin],Dst};
 resolve_inst({bs_get_tail,[Src,Dst,Live]},_,_,_) ->
     {bs_get_tail,Src,Dst,Live};
 resolve_inst({bs_get_position,[Src,Dst,Live]},_,_,_) ->
-- 
2.35.3

Places

File 2362-beam_disasm-Resolve-bs_start_match3-as-test-5.patch of Package erlang (Revision b1ddc78860c1f178c6361caad002e77d)

Places