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c80fb6a20e
defined) or a declaration (external symbol), instead of deriving it from
from the bind of the tasmsymbol. The reason is that with module-level
inline assembly, some locally implemented functions (in pure assembler)
won't have an LLVM IR body
git-svn-id: trunk@31629 -
1121 lines
37 KiB
ObjectPascal
1121 lines
37 KiB
ObjectPascal
{
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Copyright (c) 1998-2013 by the Free Pascal team
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This unit implements the generic part of the LLVM IR writer
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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****************************************************************************
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}
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unit agllvm;
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{$i fpcdefs.inc}
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interface
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uses
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globtype,globals,systems,
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aasmbase,aasmtai,aasmdata,
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assemble;
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type
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TLLVMInstrWriter = class;
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TLLVMAssember=class(texternalassembler)
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protected
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fdecllevel: longint;
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procedure WriteExtraHeader;virtual;
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procedure WriteExtraFooter;virtual;
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procedure WriteInstruction(hp: tai);
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procedure WriteLlvmInstruction(hp: tai);
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procedure WriteDirectiveName(dir: TAsmDirective); virtual;
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procedure WriteRealConst(hp: tai_realconst; do_line: boolean);
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procedure WriteOrdConst(hp: tai_const);
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procedure WriteTai(const replaceforbidden: boolean; const do_line: boolean; var InlineLevel: cardinal; var asmblock: boolean; var hp: tai);
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public
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constructor create(info: pasminfo; smart: boolean); override;
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function MakeCmdLine: TCmdStr; override;
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procedure WriteTree(p:TAsmList);override;
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procedure WriteAsmList;override;
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destructor destroy; override;
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protected
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InstrWriter: TLLVMInstrWriter;
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end;
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{# This is the base class for writing instructions.
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The WriteInstruction() method must be overridden
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to write a single instruction to the assembler
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file.
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}
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TLLVMInstrWriter = class
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constructor create(_owner: TLLVMAssember);
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procedure WriteInstruction(hp : tai);
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protected
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owner: TLLVMAssember;
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fstr: TSymStr;
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function getopstr(const o:toper; refwithalign: boolean) : TSymStr;
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end;
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implementation
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uses
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SysUtils,
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cutils,cfileutl,
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fmodule,verbose,
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aasmcnst,symconst,symdef,symtable,
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llvmbase,aasmllvm,itllvm,llvmdef,
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cgbase,cgutils,cpubase;
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const
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line_length = 70;
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type
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{$ifdef cpuextended}
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t80bitarray = array[0..9] of byte;
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{$endif cpuextended}
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t64bitarray = array[0..7] of byte;
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t32bitarray = array[0..3] of byte;
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{****************************************************************************}
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{ Support routines }
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{****************************************************************************}
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function single2str(d : single) : string;
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var
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hs : string;
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begin
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str(d,hs);
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{ replace space with + }
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if hs[1]=' ' then
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hs[1]:='+';
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single2str:=hs
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end;
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function double2str(d : double) : string;
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var
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hs : string;
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begin
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str(d,hs);
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{ replace space with + }
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if hs[1]=' ' then
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hs[1]:='+';
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double2str:=hs
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end;
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function extended2str(e : extended) : string;
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var
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hs : string;
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begin
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str(e,hs);
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{ replace space with + }
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if hs[1]=' ' then
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hs[1]:='+';
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extended2str:=hs
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end;
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{****************************************************************************}
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{ LLVM Instruction writer }
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{****************************************************************************}
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function getregisterstring(reg: tregister): ansistring;
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begin
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if getregtype(reg)=R_TEMPREGISTER then
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result:='%tmp.'
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else
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result:='%reg.'+tostr(byte(getregtype(reg)))+'_';
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result:=result+tostr(getsupreg(reg));
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end;
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function getreferencealignstring(var ref: treference) : ansistring;
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begin
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result:=', align '+tostr(ref.alignment);
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end;
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function getreferencestring(var ref : treference; withalign: boolean) : ansistring;
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begin
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result:='';
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if assigned(ref.relsymbol) or
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(assigned(ref.symbol) =
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(ref.base<>NR_NO)) or
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(ref.index<>NR_NO) or
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(ref.offset<>0) then
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begin
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result:=' **(error ref: ';
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if assigned(ref.symbol) then
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result:=result+'sym='+ref.symbol.name+', ';
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if assigned(ref.relsymbol) then
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result:=result+'sym='+ref.relsymbol.name+', ';
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if ref.base=NR_NO then
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result:=result+'base=NR_NO, ';
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if ref.index<>NR_NO then
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result:=result+'index<>NR_NO, ';
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if ref.offset<>0 then
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result:=result+'offset='+tostr(ref.offset);
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result:=result+')**'
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// internalerror(2013060225);
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end;
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if ref.base<>NR_NO then
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result:=result+getregisterstring(ref.base)
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else
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result:=result+LlvmAsmSymName(ref.symbol);
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if withalign then
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result:=result+getreferencealignstring(ref);
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end;
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function getparas(const o: toper): ansistring;
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var
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i: longint;
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para: pllvmcallpara;
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begin
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result:='(';
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for i:=0 to o.paras.count-1 do
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begin
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if i<>0 then
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result:=result+', ';
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para:=pllvmcallpara(o.paras[i]);
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result:=result+llvmencodetypename(para^.def);
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if para^.valueext<>lve_none then
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result:=result+llvmvalueextension2str[para^.valueext];
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case para^.loc of
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LOC_REGISTER,
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LOC_FPUREGISTER,
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LOC_MMREGISTER:
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result:=result+' '+getregisterstring(para^.reg);
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else
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internalerror(2014010801);
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end;
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end;
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result:=result+')';
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end;
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function llvmdoubletostr(const d: double): TSymStr;
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type
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tdoubleval = record
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case byte of
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1: (d: double);
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2: (i: int64);
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end;
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begin
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{ "When using the hexadecimal form, constants of types half,
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float, and double are represented using the 16-digit form shown
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above (which matches the IEEE754 representation for double)"
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And always in big endian form (sign bit leftmost)
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}
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result:='0x'+hexstr(tdoubleval(d).i,16);
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end;
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{$if defined(cpuextended) and defined(FPC_HAS_TYPE_EXTENDED)}
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function llvmextendedtostr(const e: extended): TSymStr;
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var
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extendedval: record
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case byte of
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1: (e: extended);
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2: (r: packed record
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{$ifdef FPC_LITTLE_ENDIAN}
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l: int64;
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h: word;
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{$else FPC_LITTLE_ENDIAN}
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h: int64;
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l: word;
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{$endif FPC_LITTLE_ENDIAN}
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end;
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);
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end;
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begin
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extendedval.e:=e;
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{ hex format is always big endian in llvm }
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result:='0xK'+hexstr(extendedval.r.h,sizeof(extendedval.r.h)*2)+
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hexstr(extendedval.r.l,sizeof(extendedval.r.l)*2);
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end;
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{$endif cpuextended}
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function TLLVMInstrWriter.getopstr(const o:toper; refwithalign: boolean) : TSymStr;
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var
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hs : ansistring;
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hp: tai;
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tmpinline: cardinal;
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tmpasmblock: boolean;
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begin
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case o.typ of
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top_reg:
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getopstr:=getregisterstring(o.reg);
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top_const:
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getopstr:=tostr(int64(o.val));
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top_ref:
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if o.ref^.refaddr=addr_full then
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begin
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getopstr:='';
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getopstr:=LlvmAsmSymName(o.ref^.symbol);
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if o.ref^.offset<>0 then
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internalerror(2013060223);
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end
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else
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getopstr:=getreferencestring(o.ref^,refwithalign);
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top_def:
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begin
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getopstr:=llvmencodetypename(o.def);
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end;
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top_cond:
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begin
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getopstr:=llvm_cond2str[o.cond];
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end;
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top_fpcond:
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begin
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getopstr:=llvm_fpcond2str[o.fpcond];
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end;
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top_single,
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top_double:
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begin
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{ "When using the hexadecimal form, constants of types half,
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float, and double are represented using the 16-digit form shown
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above (which matches the IEEE754 representation for double)"
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And always in big endian form (sign bit leftmost)
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}
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if o.typ=top_double then
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result:=llvmdoubletostr(o.dval)
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else
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result:=llvmdoubletostr(o.sval)
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end;
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top_para:
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begin
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result:=getparas(o);
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end;
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top_tai:
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begin
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tmpinline:=1;
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tmpasmblock:=false;
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hp:=o.ai;
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owner.writer.AsmWrite(fstr);
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fstr:='';
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owner.WriteTai(false,false,tmpinline,tmpasmblock,hp);
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result:='';
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end;
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{$if defined(cpuextended) and defined(FPC_HAS_TYPE_EXTENDED)}
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top_extended80:
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begin
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result:=llvmextendedtostr(o.eval);
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end;
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{$endif cpuextended}
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top_undef:
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result:='undef'
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else
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internalerror(2013060227);
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end;
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end;
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procedure TLLVMInstrWriter.WriteInstruction(hp: tai);
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var
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op: tllvmop;
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sep: TSymStr;
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i, opstart: byte;
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nested: boolean;
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done: boolean;
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begin
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op:=taillvm(hp).llvmopcode;
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{ we write everything immediately rather than adding it into a string,
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because operands may contain other tai that will also write things out
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(and their output must come after everything that was processed in this
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instruction, such as its opcode or previous operands) }
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if owner.fdecllevel=0 then
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owner.writer.AsmWrite(#9);
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sep:=' ';
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done:=false;
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opstart:=0;
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nested:=false;
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case op of
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la_type:
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begin
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owner.writer.AsmWrite(llvmtypeidentifier(taillvm(hp).oper[0]^.def));
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owner.writer.AsmWrite(' = type ');
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owner.writer.AsmWrite(llvmencodetypedecl(taillvm(hp).oper[0]^.def));
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done:=true;
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end;
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la_ret, la_br, la_switch, la_indirectbr,
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la_invoke, la_resume,
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la_unreachable,
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la_store,
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la_fence,
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la_cmpxchg,
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la_atomicrmw:
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begin
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{ instructions that never have a result }
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end;
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la_call:
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begin
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if taillvm(hp).oper[1]^.reg<>NR_NO then
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owner.writer.AsmWrite(getregisterstring(taillvm(hp).oper[1]^.reg)+' = ');
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sep:=' ';
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opstart:=2;
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end;
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la_alloca:
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begin
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owner.writer.AsmWrite(getreferencestring(taillvm(hp).oper[0]^.ref^,false)+' = ');
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sep:=' ';
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opstart:=1;
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end;
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la_trunc, la_zext, la_sext, la_fptrunc, la_fpext,
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la_fptoui, la_fptosi, la_uitofp, la_sitofp,
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la_ptrtoint, la_inttoptr,
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la_bitcast:
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begin
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{ destination can be empty in case of nested constructs, or
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data initialisers }
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if (taillvm(hp).oper[0]^.typ<>top_reg) or
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(taillvm(hp).oper[0]^.reg<>NR_NO) then
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owner.writer.AsmWrite(getopstr(taillvm(hp).oper[0]^,false)+' = ')
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else
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nested:=true;
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owner.writer.AsmWrite(llvm_op2str[op]);
|
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if not nested then
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owner.writer.AsmWrite(' ')
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else
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owner.writer.AsmWrite(' (');
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owner.writer.AsmWrite(getopstr(taillvm(hp).oper[1]^,false));
|
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{ if there's a tai operand, its def is used instead of an
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explicit def operand }
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if taillvm(hp).ops=4 then
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begin
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owner.writer.AsmWrite(' ');
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owner.writer.AsmWrite(getopstr(taillvm(hp).oper[2]^,false));
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opstart:=3;
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end
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else
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opstart:=2;
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owner.writer.AsmWrite(' to ');
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owner.writer.AsmWrite(getopstr(taillvm(hp).oper[opstart]^,false));
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done:=true;
|
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end
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else
|
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begin
|
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if (taillvm(hp).oper[0]^.typ<>top_reg) or
|
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(taillvm(hp).oper[0]^.reg<>NR_NO) then
|
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begin
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owner.writer.AsmWrite(getopstr(taillvm(hp).oper[0]^,true)+' = ');
|
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end
|
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else
|
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nested:=true;
|
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sep:=' ';
|
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opstart:=1
|
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end;
|
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end;
|
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{ process operands }
|
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if not done then
|
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begin
|
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owner.writer.AsmWrite(llvm_op2str[op]);
|
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if nested then
|
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owner.writer.AsmWrite(' (');
|
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if taillvm(hp).ops<>0 then
|
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begin
|
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for i:=opstart to taillvm(hp).ops-1 do
|
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begin
|
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owner.writer.AsmWrite(sep);
|
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owner.writer.AsmWrite(getopstr(taillvm(hp).oper[i]^,op in [la_load,la_store]));
|
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if (taillvm(hp).oper[i]^.typ in [top_def,top_cond,top_fpcond]) or
|
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(op=la_call) then
|
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sep :=' '
|
|
else
|
|
sep:=', ';
|
|
end;
|
|
end;
|
|
end;
|
|
if op=la_alloca then
|
|
owner.writer.AsmWrite(getreferencealignstring(taillvm(hp).oper[0]^.ref^));
|
|
if nested then
|
|
owner.writer.AsmWrite(')')
|
|
else if owner.fdecllevel=0 then
|
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owner.writer.AsmLn;
|
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end;
|
|
|
|
|
|
{****************************************************************************}
|
|
{ LLVM Assembler writer }
|
|
{****************************************************************************}
|
|
|
|
destructor TLLVMAssember.Destroy;
|
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begin
|
|
InstrWriter.free;
|
|
inherited destroy;
|
|
end;
|
|
|
|
|
|
function TLLVMAssember.MakeCmdLine: TCmdStr;
|
|
var
|
|
optstr: TCmdStr;
|
|
begin
|
|
result := inherited MakeCmdLine;
|
|
{ standard optimization flags for llc -- todo: this needs to be split
|
|
into a call to opt and one to llc }
|
|
if cs_opt_level3 in current_settings.optimizerswitches then
|
|
optstr:='-O3'
|
|
else if cs_opt_level2 in current_settings.optimizerswitches then
|
|
optstr:='-O2'
|
|
else if cs_opt_level1 in current_settings.optimizerswitches then
|
|
optstr:='-O1'
|
|
else
|
|
optstr:='-O0';
|
|
{ stack frame elimination }
|
|
if not(cs_opt_stackframe in current_settings.optimizerswitches) then
|
|
optstr:=optstr+' -disable-fp-elim';
|
|
{ fast math }
|
|
if cs_opt_fastmath in current_settings.optimizerswitches then
|
|
optstr:=optstr+' -enable-unsafe-fp-math -enable-fp-mad -fp-contract=fast';
|
|
{ smart linking }
|
|
if cs_create_smart in current_settings.moduleswitches then
|
|
optstr:=optstr+' -fdata-sections -fcode-sections';
|
|
{ pic }
|
|
if cs_create_pic in current_settings.moduleswitches then
|
|
optstr:=optstr+' -relocation-model=pic'
|
|
else if not(target_info.system in systems_darwin) then
|
|
optstr:=optstr+' -relocation-model=static'
|
|
else
|
|
optstr:=optstr+' -relocation-model=dynamic-no-pic';
|
|
{ our stack alignment is non-standard on some targets. The following
|
|
parameter is however ignored on some targets by llvm, so it may not
|
|
be enough }
|
|
optstr:=optstr+' -stack-alignment='+tostr(target_info.stackalign*8);
|
|
{ force object output instead of textual assembler code }
|
|
optstr:=optstr+' -filetype=obj';
|
|
replace(result,'$OPT',optstr);
|
|
end;
|
|
|
|
|
|
procedure TLLVMAssember.WriteTree(p:TAsmList);
|
|
var
|
|
hp : tai;
|
|
InlineLevel : cardinal;
|
|
asmblock: boolean;
|
|
do_line : boolean;
|
|
replaceforbidden: boolean;
|
|
begin
|
|
if not assigned(p) then
|
|
exit;
|
|
replaceforbidden:=asminfo^.dollarsign<>'$';
|
|
|
|
InlineLevel:=0;
|
|
asmblock:=false;
|
|
{ lineinfo is only needed for al_procedures (PFV) }
|
|
do_line:=(cs_asm_source in current_settings.globalswitches) or
|
|
((cs_lineinfo in current_settings.moduleswitches)
|
|
and (p=current_asmdata.asmlists[al_procedures]));
|
|
hp:=tai(p.first);
|
|
while assigned(hp) do
|
|
begin
|
|
prefetch(pointer(hp.next)^);
|
|
if not(hp.typ in SkipLineInfo) then
|
|
begin
|
|
current_filepos:=tailineinfo(hp).fileinfo;
|
|
{ no line info for inlined code }
|
|
if do_line and (inlinelevel=0) then
|
|
WriteSourceLine(hp as tailineinfo);
|
|
end;
|
|
|
|
WriteTai(replaceforbidden, do_line, InlineLevel, asmblock, hp);
|
|
hp:=tai(hp.next);
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure TLLVMAssember.WriteExtraHeader;
|
|
begin
|
|
writer.AsmWrite('target datalayout = "');
|
|
writer.AsmWrite(target_info.llvmdatalayout);
|
|
writer.AsmWriteln('"');
|
|
writer.AsmWrite('target triple = "');
|
|
writer.AsmWrite(llvm_target_name);
|
|
writer.AsmWriteln('"');
|
|
end;
|
|
|
|
|
|
procedure TLLVMAssember.WriteExtraFooter;
|
|
begin
|
|
end;
|
|
|
|
|
|
procedure TLLVMAssember.WriteInstruction(hp: tai);
|
|
begin
|
|
|
|
end;
|
|
|
|
|
|
procedure TLLVMAssember.WriteLlvmInstruction(hp: tai);
|
|
begin
|
|
InstrWriter.WriteInstruction(hp);
|
|
end;
|
|
|
|
|
|
procedure TLLVMAssember.WriteRealConst(hp: tai_realconst; do_line: boolean);
|
|
begin
|
|
if do_line and
|
|
(fdecllevel=0) then
|
|
begin
|
|
case tai_realconst(hp).realtyp of
|
|
aitrealconst_s32bit:
|
|
writer.AsmWriteLn(asminfo^.comment+'value: '+single2str(tai_realconst(hp).value.s32val));
|
|
aitrealconst_s64bit:
|
|
writer.AsmWriteLn(asminfo^.comment+'value: '+double2str(tai_realconst(hp).value.s64val));
|
|
{$if defined(cpuextended) and defined(FPC_HAS_TYPE_EXTENDED)}
|
|
{ can't write full 80 bit floating point constants yet on non-x86 }
|
|
aitrealconst_s80bit:
|
|
writer.AsmWriteLn(asminfo^.comment+'value: '+extended2str(tai_realconst(hp).value.s80val));
|
|
{$endif cpuextended}
|
|
aitrealconst_s64comp:
|
|
writer.AsmWriteLn(asminfo^.comment+'value: '+extended2str(tai_realconst(hp).value.s64compval));
|
|
else
|
|
internalerror(2014050604);
|
|
end;
|
|
end;
|
|
case hp.realtyp of
|
|
aitrealconst_s32bit:
|
|
writer.AsmWriteln(llvmdoubletostr(hp.value.s32val));
|
|
aitrealconst_s64bit:
|
|
writer.AsmWriteln(llvmdoubletostr(hp.value.s64val));
|
|
{$if defined(cpuextended) and defined(FPC_HAS_TYPE_EXTENDED)}
|
|
aitrealconst_s80bit:
|
|
writer.AsmWriteln(llvmextendedtostr(hp.value.s80val));
|
|
{$endif defined(cpuextended)}
|
|
aitrealconst_s64comp:
|
|
{ handled as int64 most of the time in llvm }
|
|
writer.AsmWriteln(tostr(round(hp.value.s64compval)));
|
|
else
|
|
internalerror(2014062401);
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure TLLVMAssember.WriteOrdConst(hp: tai_const);
|
|
var
|
|
consttyp: taiconst_type;
|
|
begin
|
|
if fdecllevel=0 then
|
|
writer.AsmWrite(asminfo^.comment+' const ');
|
|
consttyp:=hp.consttype;
|
|
case consttyp of
|
|
aitconst_got,
|
|
aitconst_gotoff_symbol,
|
|
aitconst_uleb128bit,
|
|
aitconst_sleb128bit,
|
|
aitconst_rva_symbol,
|
|
aitconst_secrel32_symbol,
|
|
aitconst_darwin_dwarf_delta32,
|
|
aitconst_darwin_dwarf_delta64,
|
|
aitconst_half16bit,
|
|
aitconst_gs:
|
|
internalerror(2014052901);
|
|
aitconst_128bit,
|
|
aitconst_64bit,
|
|
aitconst_32bit,
|
|
aitconst_16bit,
|
|
aitconst_8bit,
|
|
aitconst_16bit_unaligned,
|
|
aitconst_32bit_unaligned,
|
|
aitconst_64bit_unaligned:
|
|
begin
|
|
if fdecllevel=0 then
|
|
writer.AsmWrite(asminfo^.comment);
|
|
{ can't have compile-time differences between symbols; these are
|
|
normally for PIC, but llvm takes care of that for us }
|
|
if assigned(hp.endsym) then
|
|
internalerror(2014052902);
|
|
if assigned(hp.sym) then
|
|
begin
|
|
writer.AsmWrite(LlvmAsmSymName(hp.sym));
|
|
{ can't have offsets }
|
|
if hp.value<>0 then
|
|
if fdecllevel<>0 then
|
|
internalerror(2014052903)
|
|
else
|
|
writer.AsmWrite(' -- symbol offset: ' + tostr(hp.value));
|
|
end
|
|
else if hp.value=0 then
|
|
writer.AsmWrite('zeroinitializer')
|
|
else
|
|
writer.AsmWrite(tostr(hp.value));
|
|
if fdecllevel=0 then
|
|
writer.AsmLn;
|
|
end;
|
|
else
|
|
internalerror(200704251);
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure TLLVMAssember.WriteTai(const replaceforbidden: boolean; const do_line: boolean; var InlineLevel: cardinal; var asmblock: boolean; var hp: tai);
|
|
|
|
procedure WriteTypedConstData(hp: tai_abstracttypedconst);
|
|
var
|
|
p: tai_abstracttypedconst;
|
|
pval: tai;
|
|
defstr: TSymStr;
|
|
first, gotstring: boolean;
|
|
begin
|
|
defstr:=llvmencodetypename(hp.def);
|
|
{ write the struct, array or simple type }
|
|
case hp.adetyp of
|
|
tck_record:
|
|
begin
|
|
writer.AsmWrite(defstr);
|
|
writer.AsmWrite(' ');
|
|
if tabstractrecordsymtable(tabstractrecorddef(hp.def).symtable).usefieldalignment<>C_alignment then
|
|
writer.AsmWrite('<{')
|
|
else
|
|
writer.AsmWrite('{');
|
|
first:=true;
|
|
for p in tai_aggregatetypedconst(hp) do
|
|
begin
|
|
if not first then
|
|
writer.AsmWrite(', ')
|
|
else
|
|
first:=false;
|
|
WriteTypedConstData(p);
|
|
end;
|
|
if tabstractrecordsymtable(tabstractrecorddef(hp.def).symtable).usefieldalignment<>C_alignment then
|
|
writer.AsmWrite('}>')
|
|
else
|
|
writer.AsmWrite('}');
|
|
end;
|
|
tck_array:
|
|
begin
|
|
writer.AsmWrite(defstr);
|
|
first:=true;
|
|
gotstring:=false;
|
|
for p in tai_aggregatetypedconst(hp) do
|
|
begin
|
|
if not first then
|
|
writer.AsmWrite(',')
|
|
else
|
|
begin
|
|
writer.AsmWrite(' ');
|
|
if (tai_abstracttypedconst(p).adetyp=tck_simple) and
|
|
(tai_simpletypedconst(p).val.typ=ait_string) then
|
|
begin
|
|
gotstring:=true;
|
|
end
|
|
else
|
|
begin
|
|
writer.AsmWrite('[');
|
|
end;
|
|
first:=false;
|
|
end;
|
|
{ cannot concat strings and other things }
|
|
if gotstring and
|
|
((tai_abstracttypedconst(p).adetyp<>tck_simple) or
|
|
(tai_simpletypedconst(p).val.typ<>ait_string)) then
|
|
internalerror(2014062701);
|
|
WriteTypedConstData(p);
|
|
end;
|
|
if not gotstring then
|
|
writer.AsmWrite(']');
|
|
end;
|
|
tck_simple:
|
|
begin
|
|
pval:=tai_simpletypedconst(hp).val;
|
|
if pval.typ<>ait_string then
|
|
begin
|
|
writer.AsmWrite(defstr);
|
|
writer.AsmWrite(' ');
|
|
end;
|
|
WriteTai(replaceforbidden,do_line,InlineLevel,asmblock,pval);
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
var
|
|
hp2: tai;
|
|
s: string;
|
|
i: longint;
|
|
ch: ansichar;
|
|
begin
|
|
case hp.typ of
|
|
ait_comment :
|
|
begin
|
|
writer.AsmWrite(asminfo^.comment);
|
|
writer.AsmWritePChar(tai_comment(hp).str);
|
|
if fdecllevel<>0 then
|
|
internalerror(2015090601);
|
|
writer.AsmLn;
|
|
end;
|
|
|
|
ait_regalloc :
|
|
begin
|
|
if (cs_asm_regalloc in current_settings.globalswitches) then
|
|
begin
|
|
writer.AsmWrite(#9+asminfo^.comment+'Register ');
|
|
repeat
|
|
writer.AsmWrite(std_regname(Tai_regalloc(hp).reg));
|
|
if (hp.next=nil) or
|
|
(tai(hp.next).typ<>ait_regalloc) or
|
|
(tai_regalloc(hp.next).ratype<>tai_regalloc(hp).ratype) then
|
|
break;
|
|
hp:=tai(hp.next);
|
|
writer.AsmWrite(',');
|
|
until false;
|
|
writer.AsmWrite(' ');
|
|
writer.AsmWriteLn(regallocstr[tai_regalloc(hp).ratype]);
|
|
end;
|
|
end;
|
|
|
|
ait_tempalloc :
|
|
begin
|
|
if (cs_asm_tempalloc in current_settings.globalswitches) then
|
|
WriteTempalloc(tai_tempalloc(hp));
|
|
end;
|
|
|
|
ait_align,
|
|
ait_section :
|
|
begin
|
|
{ ignore, specified as part of declarations -- don't write
|
|
comment, because could appear in the middle of an aggregate
|
|
constant definition }
|
|
end;
|
|
|
|
ait_datablock :
|
|
begin
|
|
writer.AsmWrite(asminfo^.comment);
|
|
writer.AsmWriteln('datablock');
|
|
end;
|
|
|
|
ait_const:
|
|
begin
|
|
WriteOrdConst(tai_const(hp));
|
|
end;
|
|
|
|
ait_realconst :
|
|
begin
|
|
WriteRealConst(tai_realconst(hp), do_line);
|
|
end;
|
|
|
|
ait_string :
|
|
begin
|
|
if fdecllevel=0 then
|
|
writer.AsmWrite(asminfo^.comment);
|
|
writer.AsmWrite('c"');
|
|
for i:=1 to tai_string(hp).len do
|
|
begin
|
|
ch:=tai_string(hp).str[i-1];
|
|
case ch of
|
|
#0, {This can't be done by range, because a bug in FPC}
|
|
#1..#31,
|
|
#128..#255,
|
|
'"',
|
|
'\' : s:='\'+hexStr(ord(ch),2);
|
|
else
|
|
s:=ch;
|
|
end;
|
|
writer.AsmWrite(s);
|
|
end;
|
|
writer.AsmWriteLn('"');
|
|
end;
|
|
|
|
ait_label :
|
|
begin
|
|
if not asmblock and
|
|
(tai_label(hp).labsym.is_used) then
|
|
begin
|
|
if (tai_label(hp).labsym.bind=AB_PRIVATE_EXTERN) then
|
|
begin
|
|
{ should be emitted as part of the variable/function def }
|
|
internalerror(2013010703);
|
|
end;
|
|
if tai_label(hp).labsym.bind in [AB_GLOBAL, AB_PRIVATE_EXTERN] then
|
|
begin
|
|
{ should be emitted as part of the variable/function def }
|
|
//internalerror(2013010704);
|
|
writer.AsmWriteln(asminfo^.comment+'global/privateextern label: '+tai_label(hp).labsym.name);
|
|
end;
|
|
if replaceforbidden then
|
|
writer.AsmWrite(ReplaceForbiddenAsmSymbolChars(tai_label(hp).labsym.name))
|
|
else
|
|
writer.AsmWrite(tai_label(hp).labsym.name);
|
|
writer.AsmWriteLn(':');
|
|
end;
|
|
end;
|
|
|
|
ait_symbol :
|
|
begin
|
|
if fdecllevel=0 then
|
|
writer.AsmWrite(asminfo^.comment);
|
|
writer.AsmWriteln(LlvmAsmSymName(tai_symbol(hp).sym));
|
|
{ todo }
|
|
if tai_symbol(hp).has_value then
|
|
internalerror(2014062402);
|
|
end;
|
|
ait_llvmdecl:
|
|
begin
|
|
if taillvmdecl(hp).def.typ=procdef then
|
|
begin
|
|
if not taillvmdecl(hp).definition then
|
|
begin
|
|
writer.AsmWrite('declare');
|
|
writer.AsmWriteln(llvmencodeproctype(tprocdef(taillvmdecl(hp).def), taillvmdecl(hp).namesym.name, lpd_decl));
|
|
end
|
|
else
|
|
begin
|
|
writer.AsmWrite('define');
|
|
writer.AsmWrite(llvmencodeproctype(tprocdef(taillvmdecl(hp).def), '', lpd_decl));
|
|
writer.AsmWriteln(' {');
|
|
end;
|
|
end
|
|
else
|
|
begin
|
|
writer.AsmWrite(LlvmAsmSymName(taillvmdecl(hp).namesym));
|
|
case taillvmdecl(hp).namesym.bind of
|
|
AB_EXTERNAL:
|
|
writer.AsmWrite(' = external ');
|
|
AB_COMMON:
|
|
writer.AsmWrite(' = common ');
|
|
AB_LOCAL:
|
|
writer.AsmWrite(' = internal ');
|
|
AB_GLOBAL:
|
|
writer.AsmWrite(' = ');
|
|
AB_WEAK_EXTERNAL:
|
|
writer.AsmWrite(' = extern_weak ');
|
|
AB_PRIVATE_EXTERN:
|
|
writer.AsmWrite('= linker_private ');
|
|
else
|
|
internalerror(2014020104);
|
|
end;
|
|
if taillvmdecl(hp).tls then
|
|
writer.AsmWrite('thread_local ');
|
|
{ todo: handle more different section types (mainly
|
|
Objective-C }
|
|
if taillvmdecl(hp).sec in [sec_rodata,sec_rodata_norel] then
|
|
writer.AsmWrite('unnamed_addr constant ')
|
|
else
|
|
writer.AsmWrite('global ');
|
|
if not assigned(taillvmdecl(hp).initdata) then
|
|
begin
|
|
writer.AsmWrite(llvmencodetypename(taillvmdecl(hp).def));
|
|
if not(taillvmdecl(hp).namesym.bind in [AB_EXTERNAL, AB_WEAK_EXTERNAL]) then
|
|
writer.AsmWrite(' zeroinitializer');
|
|
end
|
|
else
|
|
begin
|
|
inc(fdecllevel);
|
|
{ can't have an external symbol with initialisation data }
|
|
if taillvmdecl(hp).namesym.bind in [AB_EXTERNAL, AB_WEAK_EXTERNAL] then
|
|
internalerror(2014052905);
|
|
{ bitcast initialisation data to the type of the constant }
|
|
{ write initialisation data }
|
|
hp2:=tai(taillvmdecl(hp).initdata.first);
|
|
while assigned(hp2) do
|
|
begin
|
|
WriteTai(replaceforbidden,do_line,InlineLevel,asmblock,hp2);
|
|
hp2:=tai(hp2.next);
|
|
end;
|
|
dec(fdecllevel);
|
|
end;
|
|
{ alignment }
|
|
writer.AsmWrite(', align ');
|
|
writer.AsmWriteln(tostr(taillvmdecl(hp).alignment));
|
|
end;
|
|
end;
|
|
ait_llvmalias:
|
|
begin
|
|
writer.AsmWrite(LlvmAsmSymName(taillvmalias(hp).newsym));
|
|
writer.AsmWrite(' = alias ');
|
|
if taillvmalias(hp).linkage<>lll_default then
|
|
begin
|
|
str(taillvmalias(hp).linkage, s);
|
|
writer.AsmWrite(copy(s, length('lll_')+1, 255));
|
|
writer.AsmWrite(' ');
|
|
end;
|
|
if taillvmalias(hp).vis<>llv_default then
|
|
begin
|
|
str(taillvmalias(hp).vis, s);
|
|
writer.AsmWrite(copy(s, length('llv_')+1, 255));
|
|
writer.AsmWrite(' ');
|
|
end;
|
|
if taillvmalias(hp).def.typ=procdef then
|
|
writer.AsmWrite(llvmencodeproctype(tabstractprocdef(taillvmalias(hp).def), '', lpd_alias))
|
|
else
|
|
writer.AsmWrite(llvmencodetypename(taillvmalias(hp).def));
|
|
writer.AsmWrite('* ');
|
|
writer.AsmWriteln(LlvmAsmSymName(taillvmalias(hp).oldsym));
|
|
end;
|
|
ait_symbolpair:
|
|
begin
|
|
{ should be emitted as part of the symbol def }
|
|
internalerror(2013010708);
|
|
end;
|
|
|
|
ait_weak:
|
|
begin
|
|
{ should be emitted as part of the symbol def }
|
|
internalerror(2013010709);
|
|
end;
|
|
|
|
ait_symbol_end :
|
|
begin
|
|
if tai_symbol_end(hp).sym.typ=AT_FUNCTION then
|
|
writer.AsmWriteln('}')
|
|
else
|
|
writer.AsmWriteln('; ait_symbol_end error, should not be generated');
|
|
// internalerror(2013010711);
|
|
end;
|
|
|
|
ait_instruction :
|
|
begin
|
|
WriteInstruction(hp);
|
|
end;
|
|
|
|
ait_llvmins:
|
|
begin
|
|
WriteLlvmInstruction(hp);
|
|
end;
|
|
|
|
ait_stab :
|
|
begin
|
|
internalerror(2013010712);
|
|
end;
|
|
|
|
ait_force_line,
|
|
ait_function_name :
|
|
;
|
|
|
|
ait_cutobject :
|
|
begin
|
|
end;
|
|
|
|
ait_marker :
|
|
case
|
|
tai_marker(hp).kind of
|
|
mark_NoLineInfoStart:
|
|
inc(InlineLevel);
|
|
mark_NoLineInfoEnd:
|
|
dec(InlineLevel);
|
|
{ these cannot be nested }
|
|
mark_AsmBlockStart:
|
|
asmblock:=true;
|
|
mark_AsmBlockEnd:
|
|
asmblock:=false;
|
|
end;
|
|
|
|
ait_directive :
|
|
begin
|
|
WriteDirectiveName(tai_directive(hp).directive);
|
|
if tai_directive(hp).name <>'' then
|
|
writer.AsmWrite(tai_directive(hp).name);
|
|
if fdecllevel<>0 then
|
|
internalerror(2015090602);
|
|
writer.AsmLn;
|
|
end;
|
|
|
|
ait_seh_directive :
|
|
begin
|
|
internalerror(2013010713);
|
|
end;
|
|
ait_varloc:
|
|
begin
|
|
if tai_varloc(hp).newlocationhi<>NR_NO then
|
|
writer.AsmWrite(strpnew('Var '+tai_varloc(hp).varsym.realname+' located in register '+
|
|
std_regname(tai_varloc(hp).newlocationhi)+':'+std_regname(tai_varloc(hp).newlocation)))
|
|
else
|
|
writer.AsmWrite(strpnew('Var '+tai_varloc(hp).varsym.realname+' located in register '+
|
|
std_regname(tai_varloc(hp).newlocation)));
|
|
if fdecllevel<>0 then
|
|
internalerror(2015090603);
|
|
writer.AsmLn;
|
|
end;
|
|
ait_typedconst:
|
|
begin
|
|
WriteTypedConstData(tai_abstracttypedconst(hp));
|
|
end
|
|
else
|
|
internalerror(2006012201);
|
|
end;
|
|
end;
|
|
|
|
|
|
constructor TLLVMAssember.create(info: pasminfo; smart: boolean);
|
|
begin
|
|
inherited;
|
|
InstrWriter:=TLLVMInstrWriter.create(self);
|
|
end;
|
|
|
|
|
|
procedure TLLVMAssember.WriteDirectiveName(dir: TAsmDirective);
|
|
begin
|
|
writer.AsmWrite('.'+directivestr[dir]+' ');
|
|
end;
|
|
|
|
|
|
procedure TLLVMAssember.WriteAsmList;
|
|
var
|
|
hal : tasmlisttype;
|
|
i: longint;
|
|
begin
|
|
WriteExtraHeader;
|
|
|
|
for hal:=low(TasmlistType) to high(TasmlistType) do
|
|
begin
|
|
writer.AsmWriteLn(target_asm.comment+'Begin asmlist '+AsmlistTypeStr[hal]);
|
|
writetree(current_asmdata.asmlists[hal]);
|
|
writer.AsmWriteLn(target_asm.comment+'End asmlist '+AsmlistTypeStr[hal]);
|
|
end;
|
|
|
|
writer.AsmLn;
|
|
end;
|
|
|
|
|
|
|
|
{****************************************************************************}
|
|
{ Abstract Instruction Writer }
|
|
{****************************************************************************}
|
|
|
|
constructor TLLVMInstrWriter.create(_owner: TLLVMAssember);
|
|
begin
|
|
inherited create;
|
|
owner := _owner;
|
|
end;
|
|
|
|
|
|
const
|
|
as_llvm_info : tasminfo =
|
|
(
|
|
id : as_llvm;
|
|
|
|
idtxt : 'LLVM-AS';
|
|
asmbin : 'llc';
|
|
asmcmd: '$OPT -o $OBJ $ASM';
|
|
supported_targets : [system_x86_64_linux,system_x86_64_darwin,system_powerpc64_darwin];
|
|
flags : [af_smartlink_sections];
|
|
labelprefix : 'L';
|
|
comment : '; ';
|
|
dollarsign: '$';
|
|
);
|
|
|
|
|
|
begin
|
|
RegisterAssembler(as_llvm_info,TLLVMAssember);
|
|
end.
|