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{
Copyright (c) 2008,2015 by Peter Vreman, Florian Klaempfl and Jonas Maebe
This units contains support for generating LLVM type info
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
****************************************************************************
}
{
This units contains support for LLVM type info generation.
It's based on the debug info system, since it's quite similar
}
unit llvmtype;
{$i fpcdefs.inc}
{$h+}
interface
uses
cclasses,globtype,
aasmbase,aasmtai,aasmdata,
symbase,symtype,symdef,symsym,
aasmllvm,aasmcnst,
finput,
dbgbase;
{ TLLVMTypeInfo }
type
TLLVMTypeInfo = class(TDebugInfo)
protected
{ using alias/external declarations it's possible to refer to the same
assembler symbol using multiple types:
function f(p: pointer): pointer; [public, alias: 'FPC_FUNC'];
procedure test(p: pointer); external name 'FPC_FUNC';
We have to insert the appropriate typecasts (per module) for LLVM in
this case. That can only be done after all code for a module has been
generated, as these alias declarations can appear anywhere }
asmsymtypes: THashSet;
function check_insert_bitcast(toplevellist: tasmlist; sym: tasmsymbol; const opdef: tdef): taillvm;
procedure record_asmsym_def(sym: TAsmSymbol; def: tdef; redefine: boolean);
function get_asmsym_def(sym: TAsmSymbol): tdef;
function record_def(def:tdef): tdef;
procedure appenddef_array(list:TAsmList;def:tarraydef);override;
procedure appenddef_abstractrecord(list:TAsmList;def:tabstractrecorddef);
procedure appenddef_record(list:TAsmList;def:trecorddef);override;
procedure appenddef_pointer(list:TAsmList;def:tpointerdef);override;
procedure appenddef_procvar(list:TAsmList;def:tprocvardef);override;
procedure appendprocdef(list:TAsmList;def:tprocdef);override;
procedure appenddef_object(list:TAsmList;def: tobjectdef);override;
procedure appenddef_classref(list: TAsmList; def: tclassrefdef);override;
procedure appenddef_variant(list:TAsmList;def: tvariantdef);override;
procedure appenddef_file(list:TasmList;def:tfiledef);override;
procedure appendsym_var(list:TAsmList;sym:tabstractnormalvarsym);
procedure appendsym_staticvar(list:TAsmList;sym:tstaticvarsym);override;
procedure appendsym_paravar(list:TAsmList;sym:tparavarsym);override;
procedure appendsym_localvar(list:TAsmList;sym:tlocalvarsym);override;
procedure appendsym_fieldvar(list:TAsmList;sym:tfieldvarsym);override;
procedure appendsym_const(list:TAsmList;sym:tconstsym);override;
procedure appendsym_absolute(list:TAsmList;sym:tabsolutevarsym);override;
procedure enum_membersyms_callback(p:TObject;arg:pointer);
procedure collect_llvmins_info(deftypelist: tasmlist; p: taillvm);
procedure collect_tai_info(deftypelist: tasmlist; p: tai);
procedure collect_asmlist_info(deftypelist, asmlist: tasmlist);
procedure insert_llvmins_typeconversions(toplevellist: tasmlist; p: taillvm);
procedure insert_typedconst_typeconversion(toplevellist: tasmlist; p: tai_abstracttypedconst);
procedure insert_tai_typeconversions(toplevellist: tasmlist; p: tai);
procedure insert_asmlist_typeconversions(toplevellist, list: tasmlist);
procedure maybe_insert_extern_sym_decl(toplevellist: tasmlist; sym: tasmsymbol; def: tdef);
procedure update_asmlist_alias_types(list: tasmlist);
public
constructor Create;override;
destructor Destroy;override;
procedure inserttypeinfo;override;
end;
implementation
uses
sysutils,cutils,cfileutl,constexp,
version,globals,verbose,systems,
cpubase,cgbase,paramgr,
fmodule,nobj,
defutil,defcmp,symconst,symtable,
llvmbase,llvmdef
;
{****************************************************************************
TLLVMTypeInfo
****************************************************************************}
procedure TLLVMTypeInfo.record_asmsym_def(sym: TAsmSymbol; def: tdef; redefine: boolean);
var
res: PHashSetItem;
begin
record_def(def);
res:=asmsymtypes.FindOrAdd(@sym,sizeof(sym));
{ due to internal aliases with different signatures, we may end up with
multiple defs for the same symbol -> use the one from the declaration,
and insert typecasts as necessary elsewhere }
if redefine or
not assigned(res^.Data) then
res^.Data:=def;
end;
function equal_llvm_defs(def1, def2: tdef): boolean;
var
def1str, def2str: TSymStr;
begin
if def1=def2 then
exit(true);
def1str:=llvmencodetypename(def1);
def2str:=llvmencodetypename(def2);
{ normalise both type representations in case one is a procdef
and the other is a procvardef}
if def1.typ=procdef then
def1str:=def1str+'*';
if def2.typ=procdef then
def2str:=def2str+'*';
result:=def1str=def2str;
end;
function TLLVMTypeInfo.check_insert_bitcast(toplevellist: tasmlist; sym: tasmsymbol; const opdef: tdef): taillvm;
var
opcmpdef: tdef;
symdef: tdef;
begin
result:=nil;
case opdef.typ of
pointerdef:
opcmpdef:=tpointerdef(opdef).pointeddef;
procvardef,
procdef:
opcmpdef:=opdef;
else
internalerror(2015073101);
end;
maybe_insert_extern_sym_decl(toplevellist, sym, opcmpdef);
symdef:=get_asmsym_def(sym);
if not equal_llvm_defs(symdef, opcmpdef) then
begin
if symdef.typ=procdef then
symdef:=cpointerdef.getreusable(symdef);
result:=taillvm.op_reg_size_sym_size(la_bitcast, NR_NO, cpointerdef.getreusable(symdef), sym, opdef);
end;
end;
function TLLVMTypeInfo.get_asmsym_def(sym: TAsmSymbol): tdef;
var
res: PHashSetItem;
begin
res:=asmsymtypes.Find(@sym,sizeof(sym));
{ we must have a def for every used asmsym }
if not assigned(res) or
not assigned(res^.data) then
internalerror(2015042701);
result:=tdef(res^.Data);
end;
function TLLVMTypeInfo.record_def(def:tdef): tdef;
var
i: longint;
begin
result:=def;
if def.stab_number<>0 then
exit;
{ the external symbol may never be called, in which case the types
of its parameters will never be process -> do it here }
if (def.typ=procdef) then
begin
{ can't use this condition to determine whether or not we need
to generate the argument defs, because this information does
not get reset when multiple units are compiled during a
single compiler invocation }
tprocdef(def).init_paraloc_info(callerside);
for i:=0 to tprocdef(def).paras.count-1 do
record_def(llvmgetcgparadef(tparavarsym(tprocdef(def).paras[i]).paraloc[callerside],true,calleeside));
record_def(llvmgetcgparadef(tprocdef(def).funcretloc[callerside],true,calleeside));
end;
def.stab_number:=1;
{ this is an internal llvm type }
if def=llvm_metadatatype then
exit;
if def.dbg_state=dbg_state_unused then
begin
def.dbg_state:=dbg_state_used;
deftowritelist.Add(def);
end;
defnumberlist.Add(def);
end;
constructor TLLVMTypeInfo.Create;
begin
inherited Create;
asmsymtypes:=THashSet.Create(current_asmdata.AsmSymbolDict.Count,true,false);
end;
destructor TLLVMTypeInfo.Destroy;
begin
asmsymtypes.free;
inherited destroy;
end;
procedure TLLVMTypeInfo.enum_membersyms_callback(p:TObject; arg: pointer);
begin
case tsym(p).typ of
fieldvarsym:
appendsym_fieldvar(TAsmList(arg),tfieldvarsym(p));
else
;
end;
end;
procedure TLLVMTypeInfo.collect_llvmins_info(deftypelist: tasmlist; p: taillvm);
var
opidx, paraidx: longint;
callpara: pllvmcallpara;
begin
for opidx:=0 to p.ops-1 do
case p.oper[opidx]^.typ of
top_def:
record_def(p.oper[opidx]^.def);
top_tai:
collect_tai_info(deftypelist,p.oper[opidx]^.ai);
top_ref:
begin
if (p.llvmopcode<>la_br) and
assigned(p.oper[opidx]^.ref^.symbol) and
(p.oper[opidx]^.ref^.symbol.bind<>AB_TEMP) then
begin
if (opidx=4) and
(p.llvmopcode in [la_call,la_invoke]) then
record_asmsym_def(p.oper[opidx]^.ref^.symbol,tpointerdef(p.oper[3]^.def).pointeddef,false)
{ not a named register }
else if (p.oper[opidx]^.ref^.refaddr<>addr_full) then
record_asmsym_def(p.oper[opidx]^.ref^.symbol,p.spilling_get_reg_type(opidx),false);
end;
end;
top_para:
for paraidx:=0 to p.oper[opidx]^.paras.count-1 do
begin
callpara:=pllvmcallpara(p.oper[opidx]^.paras[paraidx]);
record_def(callpara^.def);
if callpara^.typ=top_tai then
collect_tai_info(deftypelist,callpara^.ai);
end;
else
;
end;
end;
procedure TLLVMTypeInfo.collect_tai_info(deftypelist: tasmlist; p: tai);
var
value: tai_abstracttypedconst;
begin
if not assigned(p) then
exit;
case p.typ of
ait_llvmalias:
begin
record_asmsym_def(taillvmalias(p).newsym,taillvmalias(p).def,true);
end;
ait_llvmdecl:
begin
record_asmsym_def(taillvmdecl(p).namesym,taillvmdecl(p).def,true);
collect_asmlist_info(deftypelist,taillvmdecl(p).initdata);
end;
ait_llvmins:
collect_llvmins_info(deftypelist,taillvm(p));
ait_typedconst:
begin
record_def(tai_abstracttypedconst(p).def);
case tai_abstracttypedconst(p).adetyp of
tck_simple:
collect_tai_info(deftypelist,tai_simpletypedconst(p).val);
tck_array,tck_record:
for value in tai_aggregatetypedconst(p) do
collect_tai_info(deftypelist,value);
end;
end;
else
;
end;
end;
procedure TLLVMTypeInfo.collect_asmlist_info(deftypelist, asmlist: tasmlist);
var
hp: tai;
begin
if not assigned(asmlist) then
exit;
hp:=tai(asmlist.first);
while assigned(hp) do
begin
collect_tai_info(deftypelist,hp);
hp:=tai(hp.next);
end;
end;
procedure TLLVMTypeInfo.insert_llvmins_typeconversions(toplevellist: tasmlist; p: taillvm);
var
symdef,
opdef: tdef;
callpara: pllvmcallpara;
cnv: taillvm;
i, paraidx: longint;
begin
case p.llvmopcode of
la_call,
la_invoke:
begin
if p.oper[4]^.typ=top_ref then
begin
maybe_insert_extern_sym_decl(toplevellist,p.oper[4]^.ref^.symbol,tpointerdef(p.oper[3]^.def).pointeddef);
symdef:=get_asmsym_def(p.oper[4]^.ref^.symbol);
{ the type used in the call is different from the type used to
declare the symbol -> insert a typecast }
if not equal_llvm_defs(symdef,p.oper[3]^.def) then
begin
if symdef.typ=procdef then
{ ugly, but can't use getcopyas(procvardef) due to the
symtablestack not being available here (cpointerdef.getreusable
is hardcoded to put things in the current module's
symtable) and "pointer to procedure" results in the
correct llvm type }
symdef:=cpointerdef.getreusable(tprocdef(symdef));
cnv:=taillvm.op_reg_size_sym_size(la_bitcast,NR_NO,symdef,p.oper[4]^.ref^.symbol,p.oper[3]^.def);
p.loadtai(4,cnv);
end;
end;
for i:=0 to p.ops-1 do
begin
if p.oper[i]^.typ=top_para then
begin
for paraidx:=0 to p.oper[i]^.paras.count-1 do
begin
callpara:=pllvmcallpara(p.oper[i]^.paras[paraidx]);
case callpara^.typ of
top_tai:
insert_tai_typeconversions(toplevellist,callpara^.ai);
top_ref:
begin
cnv:=check_insert_bitcast(toplevellist,callpara^.sym,callpara^.def);
if assigned(cnv) then
begin
callpara^.typ:=top_tai;
callpara^.ai:=cnv;
end;
end;
else
;
end;
end;
end;
end;
end
else if p.llvmopcode<>la_br then
begin
{ check the types of all symbolic operands }
for i:=0 to p.ops-1 do
case p.oper[i]^.typ of
top_ref:
if (p.oper[i]^.ref^.refaddr<>addr_full) and
assigned(p.oper[i]^.ref^.symbol) and
(p.oper[i]^.ref^.symbol.bind<>AB_TEMP) then
begin
opdef:=p.spilling_get_reg_type(i);
cnv:=check_insert_bitcast(toplevellist,p.oper[i]^.ref^.symbol, opdef);
if assigned(cnv) then
p.loadtai(i, cnv);
end;
top_tai:
insert_tai_typeconversions(toplevellist,p.oper[i]^.ai);
else
;
end;
end;
end;
end;
procedure TLLVMTypeInfo.insert_typedconst_typeconversion(toplevellist: tasmlist; p: tai_abstracttypedconst);
var
symdef: tdef;
cnv: taillvm;
elementp: tai_abstracttypedconst;
begin
case p.adetyp of
tck_simple:
begin
case tai_simpletypedconst(p).val.typ of
ait_const:
if assigned(tai_const(tai_simpletypedconst(p).val).sym) and
not assigned(tai_const(tai_simpletypedconst(p).val).endsym) then
begin
maybe_insert_extern_sym_decl(toplevellist,tai_const(tai_simpletypedconst(p).val).sym,p.def);
symdef:=get_asmsym_def(tai_const(tai_simpletypedconst(p).val).sym);
{ all references to symbols in typed constants are
references to the address of a global symbol (you can't
refer to the data itself, just like you can't initialise
a Pascal (typed) constant with the contents of another
typed constant) }
symdef:=cpointerdef.getreusable(symdef);
if not equal_llvm_defs(symdef,p.def) then
begin
cnv:=taillvm.op_reg_tai_size(la_bitcast,NR_NO,tai_simpletypedconst.create(symdef,tai_simpletypedconst(p).val),p.def);
tai_simpletypedconst(p).val:=cnv;
end;
end;
else
insert_tai_typeconversions(toplevellist,tai_simpletypedconst(p).val);
end;
end;
tck_array,
tck_record:
begin
for elementp in tai_aggregatetypedconst(p) do
insert_typedconst_typeconversion(toplevellist,elementp);
end;
end;
end;
procedure TLLVMTypeInfo.insert_tai_typeconversions(toplevellist: tasmlist; p: tai);
begin
if not assigned(p) then
exit;
case p.typ of
ait_llvmins:
insert_llvmins_typeconversions(toplevellist,taillvm(p));
{ can also be necessary in case someone initialises a typed const with
the address of an external symbol aliasing one declared with a
different type in the same mmodule. }
ait_typedconst:
insert_typedconst_typeconversion(toplevellist,tai_abstracttypedconst(p));
ait_llvmdecl:
begin
if (ldf_definition in taillvmdecl(p).flags) and
(taillvmdecl(p).def.typ=procdef) and
assigned(tprocdef(taillvmdecl(p).def).personality) then
maybe_insert_extern_sym_decl(toplevellist,
current_asmdata.RefAsmSymbol(tprocdef(taillvmdecl(p).def).personality.mangledname,AT_FUNCTION,false),
tprocdef(taillvmdecl(p).def).personality);
insert_asmlist_typeconversions(toplevellist,taillvmdecl(p).initdata);
end;
else
;
end;
end;
procedure TLLVMTypeInfo.insert_asmlist_typeconversions(toplevellist, list: tasmlist);
var
hp: tai;
begin
if not assigned(list) then
exit;
hp:=tai(list.first);
while assigned(hp) do
begin
insert_tai_typeconversions(toplevellist,hp);
hp:=tai(hp.next);
end;
end;
procedure TLLVMTypeInfo.maybe_insert_extern_sym_decl(toplevellist: tasmlist; sym: tasmsymbol; def: tdef);
var
sec: tasmsectiontype;
i: longint;
begin
{ Necessery for "external" declarations for symbols not declared in the
current unit. We can't create these declarations when the alias is
initially generated, because the symbol may still be defined later at
that point.
We also do it for all other external symbol references (e.g.
references to symbols declared in other units), because then this
handling is centralised in one place. }
if not(sym.declared) then
begin
if def.typ=procdef then
sec:=sec_code
else
sec:=sec_data;
toplevellist.Concat(taillvmdecl.createdecl(sym,def,nil,sec,def.alignment));
record_asmsym_def(sym,def,true);
end;
end;
procedure TLLVMTypeInfo.update_asmlist_alias_types(list: tasmlist);
var
hp: tai;
def: tdef;
begin
if not assigned(list) then
exit;
hp:=tai(list.first);
while assigned(hp) do
begin
case hp.typ of
ait_llvmalias:
begin
{ replace the def of the alias declaration with the def of
the aliased symbol -> we'll insert the appropriate type
conversions for all uses of this symbol in the code (since
every use also specifies the used type) }
record_asmsym_def(taillvmalias(hp).oldsym,taillvmalias(hp).def,false);
def:=get_asmsym_def(taillvmalias(hp).oldsym);
if taillvmalias(hp).def<>def then
begin
taillvmalias(hp).def:=def;
record_asmsym_def(taillvmalias(hp).newsym,def,true);
end;
end;
ait_llvmdecl:
update_asmlist_alias_types(taillvmdecl(hp).initdata);
else
;
end;
hp:=tai(hp.next);
end;
end;
procedure TLLVMTypeInfo.appenddef_array(list:TAsmList;def:tarraydef);
begin
record_def(def);
appenddef(list,def.elementdef);
end;
procedure TLLVMTypeInfo.appenddef_abstractrecord(list:TAsmList;def:tabstractrecorddef);
var
symdeflist: tfpobjectlist;
i: longint;
begin
record_def(def);
symdeflist:=tabstractrecordsymtable(def.symtable).llvmst.symdeflist;
for i:=0 to symdeflist.Count-1 do
record_def(tllvmshadowsymtableentry(symdeflist[i]).def);
list.concat(taillvm.op_size(LA_TYPE,record_def(def)));
end;
procedure TLLVMTypeInfo.appenddef_record(list:TAsmList;def:trecorddef);
begin
appenddef_abstractrecord(list,def);
end;
procedure TLLVMTypeInfo.appenddef_pointer(list:TAsmList;def:tpointerdef);
begin
record_def(def);
appenddef(list,def.pointeddef);
end;
procedure TLLVMTypeInfo.appenddef_procvar(list:TAsmList;def:tprocvardef);
var
i: longint;
begin
record_def(def);
{ todo: handle mantis #25551; there is no way to create a symbolic
la_type for a procvardef (unless it's a procedure of object/record),
which means that recursive references should become plain "procedure"
types that are then casted to the real type when they are used }
def.init_paraloc_info(callerside);
for i:=0 to def.paras.count-1 do
appenddef(list,llvmgetcgparadef(tparavarsym(def.paras[i]).paraloc[callerside],true,calleeside));
appenddef(list,llvmgetcgparadef(def.funcretloc[callerside],true,calleeside));
if not def.is_addressonly then
list.concat(taillvm.op_size(LA_TYPE,record_def(def)));
end;
procedure TLLVMTypeInfo.appendprocdef(list:TAsmList;def:tprocdef);
begin
{ the procdef itself is already written by appendprocdef_implicit }
{ last write the types from this procdef }
if assigned(def.parast) then
write_symtable_defs(current_asmdata.asmlists[al_start],def.parast);
if assigned(def.localst) and
(def.localst.symtabletype=localsymtable) then
write_symtable_defs(current_asmdata.asmlists[al_start],def.localst);
end;
procedure TLLVMTypeInfo.appendsym_var(list:TAsmList;sym:tabstractnormalvarsym);
begin
appenddef(list,sym.vardef);
end;
procedure TLLVMTypeInfo.appendsym_staticvar(list:TAsmList;sym:tstaticvarsym);
begin
appendsym_var(list,sym);
end;
procedure TLLVMTypeInfo.appendsym_localvar(list:TAsmList;sym:tlocalvarsym);
begin
appendsym_var(list,sym);
end;
procedure TLLVMTypeInfo.appendsym_paravar(list:TAsmList;sym:tparavarsym);
begin
appendsym_var(list,sym);
end;
procedure TLLVMTypeInfo.appendsym_fieldvar(list:TAsmList;sym: tfieldvarsym);
begin
appenddef(list,sym.vardef);
end;
procedure TLLVMTypeInfo.appendsym_const(list:TAsmList;sym:tconstsym);
begin
appenddef(list,sym.constdef);
end;
procedure TLLVMTypeInfo.appendsym_absolute(list:TAsmList;sym:tabsolutevarsym);
begin
appenddef(list,sym.vardef);
end;
procedure TLLVMTypeInfo.inserttypeinfo;
procedure write_defs_to_write;
var
n : integer;
looplist,
templist: TFPObjectList;
def : tdef;
begin
templist := TFPObjectList.Create(False);
looplist := deftowritelist;
while looplist.count > 0 do
begin
deftowritelist := templist;
for n := 0 to looplist.count - 1 do
begin
def := tdef(looplist[n]);
case def.dbg_state of
dbg_state_written:
continue;
dbg_state_writing:
internalerror(2006100501);
dbg_state_unused:
internalerror(2006100505);
dbg_state_used:
appenddef(current_asmdata.asmlists[al_start],def)
else
internalerror(200610054);
end;
end;
looplist.clear;
templist := looplist;
looplist := deftowritelist;
end;
templist.free;
end;
var
storefilepos: tfileposinfo;
def: tdef;
i: longint;
hal: tasmlisttype;
begin
if cs_no_regalloc in current_settings.globalswitches then
exit;
storefilepos:=current_filepos;
current_filepos:=current_module.mainfilepos;
defnumberlist:=TFPObjectList.create(false);
deftowritelist:=TFPObjectList.create(false);
{ write all global/static variables, part of flagging all required tdefs }
if assigned(current_module.globalsymtable) then
write_symtable_syms(current_asmdata.asmlists[al_start],current_module.globalsymtable);
if assigned(current_module.localsymtable) then
write_symtable_syms(current_asmdata.asmlists[al_start],current_module.localsymtable);
{ write all procedures and methods, part of flagging all required tdefs }
if assigned(current_module.globalsymtable) then
write_symtable_procdefs(current_asmdata.asmlists[al_start],current_module.globalsymtable);
if assigned(current_module.localsymtable) then
write_symtable_procdefs(current_asmdata.asmlists[al_start],current_module.localsymtable);
{ process all llvm instructions, part of flagging all required tdefs }
for hal:=low(TasmlistType) to high(TasmlistType) do
if hal<>al_start then
collect_asmlist_info(current_asmdata.asmlists[al_start],current_asmdata.asmlists[hal]);
{ update the defs of all alias declarations so they match those of the
declarations of the symbols they alias }
for hal:=low(TasmlistType) to high(TasmlistType) do
if hal<>al_start then
update_asmlist_alias_types(current_asmdata.asmlists[hal]);
{ and insert the necessary type conversions }
for hal:=low(TasmlistType) to high(TasmlistType) do
if hal<>al_start then
insert_asmlist_typeconversions(
current_asmdata.asmlists[hal],
current_asmdata.asmlists[hal]);
{ write all used defs }
write_defs_to_write;
{ reset all def labels }
for i:=0 to defnumberlist.count-1 do
begin
def:=tdef(defnumberlist[i]);
def.dbg_state:=dbg_state_unused;
def.stab_number:=0;
end;
defnumberlist.free;
defnumberlist:=nil;
deftowritelist.free;
deftowritelist:=nil;
current_filepos:=storefilepos;
end;
procedure TLLVMTypeInfo.appenddef_object(list:TAsmList;def: tobjectdef);
begin
if is_interface(def) then
begin
record_def(def);
record_def(def.vmt_def);
end
else
appenddef_abstractrecord(list,def);
end;
procedure TLLVMTypeInfo.appenddef_classref(list: TAsmList; def: tclassrefdef);
begin
record_def(def);
{ can also be an objcclass, which doesn't have a vmt }
if is_class(tclassrefdef(def).pointeddef) then
record_def(tobjectdef(tclassrefdef(def).pointeddef).vmt_def);
end;
procedure TLLVMTypeInfo.appenddef_variant(list:TAsmList;def: tvariantdef);
begin
record_def(def);
appenddef(list,tabstractrecorddef(search_system_type('TVARDATA').typedef));
end;
procedure TLLVMTypeInfo.appenddef_file(list:TAsmList;def:tfiledef);
begin
record_def(def);
case tfiledef(def).filetyp of
ft_text :
appenddef(list,tabstractrecorddef(search_system_type('TEXTREC').typedef));
ft_typed,
ft_untyped :
appenddef(list,tabstractrecorddef(search_system_type('FILEREC').typedef));
end;
end;
end.
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