File 4653-Optimize-not-1.patch of Package erlang

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File 4653-Optimize-not-1.patch of Package erlang (Revision e9e9df5cd07247af20e8ef23ec8a4cab)

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From 1989f1328351ffd911c44837f2cb4e498a1e5459 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B6rn=20Gustavsson?= <bjorn@erlang.org>
Date: Sat, 29 Oct 2022 06:50:37 +0200
Subject: [PATCH 3/5] Optimize not/1

---
 lib/compiler/src/beam_ssa_codegen.erl | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/lib/compiler/src/beam_ssa_codegen.erl b/lib/compiler/src/beam_ssa_codegen.erl
index 48da69bda8..e4aa2e5568 100644
--- a/lib/compiler/src/beam_ssa_codegen.erl
+++ b/lib/compiler/src/beam_ssa_codegen.erl
@@ -27,6 +27,7 @@
 -export_type([ssa_register/0]).
 
 -include("beam_ssa.hrl").
+-include("beam_types.hrl").
 
 -import(lists, [foldl/3,keymember/3,keysort/2,map/2,mapfoldl/3,
                 member/2,reverse/1,reverse/2,sort/1,
@@ -1110,7 +1110,13 @@ cg_block([#cg_set{anno=Anno,op={bif,Name},dst=Dst0,args=Args0}=I|T],
             Is = Kill++Line++[{gc_bif,Name,{f,0},Live,Args,Dst}|Is0],
             {Is,St};
         false ->
-            Is = [{bif,Name,{f,0},Args,Dst}|Is0],
+            Bif = case {Name,Args} of
+                      {'not',[{tr,_,#t_atom{elements=[false,true]}}=Arg]} ->
+                          {bif,'=:=',{f,0},[Arg,{atom,false}],Dst};
+                      {_,_} ->
+                          {bif,Name,{f,0},Args,Dst}
+                  end,
+            Is = [Bif|Is0],
             {Is,St}
     end;
 cg_block([#cg_set{op=bs_init,dst=Dst0,args=Args0,anno=Anno}=I,
-- 
2.35.3

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File 4653-Optimize-not-1.patch of Package erlang (Revision e9e9df5cd07247af20e8ef23ec8a4cab)

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