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9d4ea0337a
fpc/compiler/llvm/hlcgllvm.pas
Jonas Maebe 9d4ea0337a + basic implementation of the LLVM high level code generator 
git-svn-id: branches/hlcgllvm@26045 -
2013-11-11 11:15:51 +00:00

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{
Copyright (c) 2010, 2013 by Jonas Maebe
Member of the Free Pascal development team
This unit implements the LLVM high level code generator
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.
****************************************************************************
}
unit hlcgllvm;
{$i fpcdefs.inc}
interface
uses
globtype,
aasmbase,aasmdata,
symbase,symconst,symtype,symdef,symsym,
cpubase, hlcgobj, cgbase, cgutils, parabase;
type
{ thlcgllvm }
thlcgllvm = class(thlcgobj)
constructor create;
function a_call_name(list : TAsmList;pd : tprocdef;const s : TSymStr; forceresdef: tdef; weak: boolean): tcgpara;override;
procedure a_call_reg(list: TAsmList; pd: tabstractprocdef; reg: tregister); override;
procedure a_load_const_reg(list : TAsmList;tosize : tdef;a : tcgint;register : tregister);override;
procedure a_load_const_ref(list: TAsmList; tosize: tdef; a: tcgint; const ref: treference);override;
procedure a_load_reg_ref(list : TAsmList;fromsize, tosize : tdef;register : tregister;const ref : treference);override;
procedure a_load_reg_reg(list : TAsmList;fromsize, tosize : tdef;reg1,reg2 : tregister);override;
procedure a_load_ref_reg(list : TAsmList;fromsize, tosize : tdef;const ref : treference;register : tregister);override;
procedure a_loadaddr_ref_reg(list : TAsmList;fromsize, tosize : tdef;const ref : treference;r : tregister);override;
procedure a_op_const_reg(list: TAsmList; Op: TOpCG; size: tdef; a: tcgint; reg: TRegister); override;
procedure a_op_const_reg_reg(list: TAsmList; op: TOpCg; size: tdef; a: tcgint; src, dst: tregister); override;
procedure a_op_reg_reg_reg(list: TAsmList; op: TOpCg; size: tdef; src1, src2, dst: tregister); override;
procedure a_op_reg_reg(list: TAsmList; Op: TOpCG; size: tdef; reg1, reg2: TRegister); override;
procedure a_op_const_reg_reg_checkoverflow(list: TAsmList; op: TOpCg; size: tdef; a: tcgint; src, dst: tregister;setflags : boolean;var ovloc : tlocation); override;
procedure a_op_reg_reg_reg_checkoverflow(list: TAsmList; op: TOpCg; size: tdef; src1, src2, dst: tregister;setflags : boolean;var ovloc : tlocation); override;
procedure a_cmp_const_reg_label(list: TAsmList; size: tdef; cmp_op: topcmp; a: tcgint; reg: tregister; l: tasmlabel); override;
procedure a_cmp_reg_reg_label(list: TAsmList; size: tdef; cmp_op: topcmp; reg1, reg2: tregister; l: tasmlabel); override;
procedure a_jmp_always(list : TAsmList;l: tasmlabel); override;
procedure g_concatcopy(list : TAsmList;size: tdef; const source,dest : treference);override;
procedure a_loadfpu_ref_reg(list: TAsmList; fromsize, tosize: tdef; const ref: treference; reg: tregister); override;
procedure a_loadfpu_reg_ref(list: TAsmList; fromsize, tosize: tdef; reg: tregister; const ref: treference); override;
procedure a_loadfpu_reg_reg(list: TAsmList; fromsize, tosize: tdef; reg1, reg2: tregister); override;
procedure gen_proc_symbol(list: TAsmList); override;
procedure gen_proc_symbol_end(list: TAsmList); override;
procedure g_proc_entry(list : TAsmList;localsize : longint;nostackframe:boolean); override;
procedure g_proc_exit(list : TAsmList;parasize:longint;nostackframe:boolean); override;
procedure g_overflowcheck(list: TAsmList; const Loc: tlocation; def: tdef); override;
procedure g_overflowCheck_loc(List:TAsmList;const Loc:TLocation;def:TDef;var ovloc : tlocation); override;
procedure a_loadmm_ref_reg(list: TAsmList; fromsize, tosize: tdef; const ref: treference; reg: tregister; shuffle: pmmshuffle); override;
procedure a_loadmm_reg_ref(list: TAsmList; fromsize, tosize: tdef; reg: tregister; const ref: treference; shuffle: pmmshuffle); override;
procedure a_loadmm_reg_reg(list: TAsmList; fromsize, tosize: tdef; reg1, reg2: tregister; shuffle: pmmshuffle); override;
procedure a_opmm_reg_reg(list: TAsmList; Op: TOpCG; size: tdef; src, dst: tregister; shuffle: pmmshuffle); override;
procedure a_loadmm_intreg_reg(list: TAsmList; fromsize, tosize: tdef; intreg, mmreg: tregister; shuffle: pmmshuffle); override;
procedure a_loadmm_reg_intreg(list: TAsmList; fromsize, tosize: tdef; mmreg, intreg: tregister; shuffle: pmmshuffle); override;
procedure gen_load_cgpara_loc(list: TAsmList; vardef: tdef; const para: TCGPara; var destloc: tlocation; reusepara: boolean); override;
{$ifdef cpuflags}
{ llvm doesn't have flags, but cpuflags is defined in case the real cpu
has flags and we have to override the abstract methods to prevent
warnings }
procedure a_jmp_flags(list: TAsmList; const f: TResFlags; l: tasmlabel); override;
procedure g_flags2reg(list: TAsmList; size: tdef; const f: tresflags; reg: TRegister); override;
procedure g_flags2ref(list: TAsmList; size: tdef; const f: tresflags; const ref: TReference); override;
{$endif cpuflags}
{ unimplemented or unnecessary routines }
procedure a_bit_scan_reg_reg(list: TAsmList; reverse: boolean; size: tdef; src, dst: tregister); override;
procedure g_stackpointer_alloc(list: TAsmList; size: longint); override;
procedure g_intf_wrapper(list: TAsmList; procdef: tprocdef; const labelname: string; ioffset: longint); override;
procedure g_adjust_self_value(list: TAsmList; procdef: tprocdef; ioffset: aint); override;
procedure g_local_unwind(list: TAsmList; l: TAsmLabel); override;
protected
{ def is the type of the data stored in memory pointed to by ref, not
a pointer to this type }
function make_simple_ref(list: TAsmList; const ref: treference; def: tdef): treference;
end;
procedure create_hlcodegen;
implementation
uses
verbose,cutils,cclasses,globals,fmodule,constexp,
defutil,llvmdef,llvmsym,
aasmtai,aasmcpu,
aasmllvm,llvmbase,tgllvm,
symtable,
paramgr,
procinfo,cpuinfo,tgobj,cgobj,cgllvm,cghlcpu;
const
topcg2llvmop: array[topcg] of tllvmop =
{ OP_NONE OP_MOVE OP_ADD OP_AND OP_DIV OP_IDIV OP_IMUL OP_MUL }
(la_none, la_none, la_add, la_and, la_udiv, la_sdiv, la_mul, la_mul,
{ OP_NEG OP_NOT OP_OR OP_SAR OP_SHL OP_SHR OP_SUB OP_XOR }
la_none, la_none, la_or, la_ashr, la_shl, la_lshr, la_sub, la_xor,
{ OP_ROL OP_ROR }
la_none, la_none);
constructor thlcgllvm.create;
begin
inherited
end;
function thlcgllvm.a_call_name(list: TAsmList; pd: tprocdef; const s: TSymStr; forceresdef: tdef; weak: boolean): tcgpara;
begin
{ todo: we also need the parameter locations here for llvm! }
list.concat(tai_comment.create(strpnew('call '+s)));
result:=get_call_result_cgpara(pd,forceresdef);
end;
procedure thlcgllvm.a_call_reg(list: TAsmList; pd: tabstractprocdef; reg: tregister);
begin
internalerror(2012042824);
end;
procedure thlcgllvm.a_load_const_reg(list: TAsmList; tosize: tdef; a: tcgint; register: tregister);
begin
list.concat(taillvm.op_reg_size_const_size(la_bitcast,register,tosize,a,tosize))
end;
procedure thlcgllvm.a_load_const_ref(list: TAsmList; tosize: tdef; a: tcgint; const ref: treference);
var
sref: treference;
begin
sref:=make_simple_ref(list,ref,tosize);
list.concat(taillvm.op_size_const_size_ref(la_store,tosize,a,getpointerdef(tosize),sref))
end;
procedure thlcgllvm.a_load_reg_ref(list: TAsmList; fromsize, tosize: tdef; register: tregister; const ref: treference);
var
sref: treference;
hreg: tregister;
begin
sref:=make_simple_ref(list,ref,tosize);
hreg:=register;
if fromsize.size<>tosize.size then
begin
hreg:=getregisterfordef(list,tosize);
a_load_reg_reg(list,fromsize,tosize,register,hreg);
end;
list.concat(taillvm.op_size_reg_size_ref(la_store,tosize,hreg,getpointerdef(tosize),sref))
end;
procedure thlcgllvm.a_load_reg_reg(list: TAsmList; fromsize, tosize: tdef; reg1, reg2: tregister);
var
fromregtyp,
toregtyp: tregistertype;
op: tllvmop;
begin
fromregtyp:=def2regtyp(fromsize);
toregtyp:=def2regtyp(tosize);
{ int to pointer or vice versa }
if (fromregtyp=R_ADDRESSREGISTER) and
(toregtyp=R_INTREGISTER) then
op:=la_ptrtoint
else if (fromregtyp=R_INTREGISTER) and
(toregtyp=R_ADDRESSREGISTER) then
op:=la_inttoptr
{ int to int or ptr to ptr: need zero/sign extension, or plain bitcast? }
else if tosize.size<>fromsize.size then
begin
if tosize.size<fromsize.size then
op:=la_trunc
else if is_signed(fromsize) then
{ fromsize is signed -> sign extension }
op:=la_sext
else
op:=la_zext;
end
else
op:=la_bitcast;
{ reg2 = bitcast fromsize reg1 to tosize }
list.concat(taillvm.op_reg_size_reg_size(op,reg2,fromsize,reg1,tosize));
end;
procedure thlcgllvm.a_load_ref_reg(list: TAsmList; fromsize, tosize: tdef; const ref: treference; register: tregister);
var
sref: treference;
hreg: tregister;
begin
sref:=make_simple_ref(list,ref,fromsize);
{ "named register"? }
if sref.refaddr=addr_full then
list.concat(taillvm.op_reg_size_ref_size(la_bitcast,register,fromsize,sref,tosize))
else
begin
hreg:=register;
if fromsize<>tosize then
hreg:=getregisterfordef(list,fromsize);
list.concat(taillvm.op_reg_size_ref(la_load,hreg,getpointerdef(fromsize),sref));
if hreg<>register then
a_load_reg_reg(list,fromsize,tosize,hreg,register);
end;
end;
procedure thlcgllvm.a_loadaddr_ref_reg(list: TAsmList; fromsize, tosize: tdef; const ref: treference; r: tregister);
var
sref: treference;
begin
{ can't take the address of a 'named register' }
if ref.refaddr=addr_full then
internalerror(2013102306);
sref:=make_simple_ref(list,ref,fromsize);
list.concat(taillvm.op_reg_size_ref_size(la_bitcast,r,fromsize,sref,tosize));
end;
procedure thlcgllvm.a_op_const_reg(list: TAsmList; Op: TOpCG; size: tdef; a: tcgint; reg: TRegister);
begin
a_op_const_reg_reg(list,op,size,a,reg,reg);
end;
procedure thlcgllvm.a_op_const_reg_reg(list: TAsmList; op: TOpCg; size: tdef; a: tcgint; src, dst: tregister);
var
tmpreg: tregister;
begin
if (def2regtyp(size)=R_INTREGISTER) and
(topcg2llvmop[op]<>la_none) then
list.concat(taillvm.op_reg_size_reg_const(topcg2llvmop[op],dst,size,src,a))
else
begin
{ default implementation is not SSA-safe }
tmpreg:=getregisterfordef(list,size);
a_load_const_reg(list,size,a,tmpreg);
a_op_reg_reg_reg(list,op,size,tmpreg,src,dst);
end;
end;
procedure thlcgllvm.a_op_reg_reg_reg(list: TAsmList; op: TOpCg; size: tdef; src1, src2, dst: tregister);
var
orgdst,
tmpreg1,
tmpreg2,
tmpreg3: tregister;
opsize: tdef;
begin
orgdst:=dst;
opsize:=size;
{ always perform using integer registers, because math operations on
pointers are not supported (except via getelementptr, possible future
optimization) }
if def2regtyp(size)=R_ADDRESSREGISTER then
begin
opsize:=ptruinttype;
tmpreg1:=getintregister(list,ptruinttype);
a_load_reg_reg(list,size,ptruinttype,src1,tmpreg1);
src1:=tmpreg1;
tmpreg1:=getintregister(list,ptruinttype);
a_load_reg_reg(list,size,ptruinttype,src2,tmpreg1);
src2:=tmpreg1;
dst:=getintregister(list,ptruinttype);
end;
if topcg2llvmop[op]<>la_none then
list.concat(taillvm.op_reg_size_reg_reg(topcg2llvmop[op],dst,opsize,src2,src1))
else
begin
case op of
OP_NEG:
{ %dst = sub size 0, %src1 }
list.concat(taillvm.op_reg_size_const_reg(la_sub,dst,opsize,0,src1));
OP_NOT:
{ %dst = xor size -1, %src1 }
list.concat(taillvm.op_reg_size_const_reg(la_xor,dst,opsize,-1,src1));
OP_ROL:
begin
tmpreg1:=getintregister(list,opsize);
tmpreg2:=getintregister(list,opsize);
tmpreg3:=getintregister(list,opsize);
{ tmpreg1 := tcgsize2size[size] - src1 }
list.concat(taillvm.op_reg_size_const_reg(la_sub,tmpreg1,opsize,opsize.size,src1));
{ tmpreg2 := src2 shr tmpreg1 }
a_op_reg_reg_reg(list,OP_SHR,opsize,tmpreg1,src2,tmpreg2);
{ tmpreg3 := src2 shl src1 }
a_op_reg_reg_reg(list,OP_SHL,opsize,src1,src2,tmpreg3);
{ dst := tmpreg2 or tmpreg3 }
a_op_reg_reg_reg(list,OP_OR,opsize,tmpreg2,tmpreg3,dst);
end;
OP_ROR:
begin
tmpreg1:=getintregister(list,size);
tmpreg2:=getintregister(list,size);
tmpreg3:=getintregister(list,size);
{ tmpreg1 := tcgsize2size[size] - src1 }
list.concat(taillvm.op_reg_size_const_reg(la_sub,tmpreg1,opsize,opsize.size,src1));
{ tmpreg2 := src2 shl tmpreg1 }
a_op_reg_reg_reg(list,OP_SHL,opsize,tmpreg1,src2,tmpreg2);
{ tmpreg3 := src2 shr src1 }
a_op_reg_reg_reg(list,OP_SHR,opsize,src1,src2,tmpreg3);
{ dst := tmpreg2 or tmpreg3 }
a_op_reg_reg_reg(list,OP_OR,opsize,tmpreg2,tmpreg3,dst);
end;
else
internalerror(2010081310);
end;
end;
if dst<>orgdst then
a_load_reg_reg(list,opsize,size,dst,orgdst);
end;
procedure thlcgllvm.a_op_reg_reg(list: TAsmList; Op: TOpCG; size: tdef; reg1, reg2: TRegister);
begin
a_op_reg_reg_reg(list,op,size,reg1,reg2,reg2);
end;
procedure thlcgllvm.a_op_const_reg_reg_checkoverflow(list: TAsmList; op: TOpCg; size: tdef; a: tcgint; src, dst: tregister; setflags: boolean; var ovloc: tlocation);
begin
if not setflags then
begin
inherited;
exit;
end;
{ use xxx.with.overflow intrinsics }
internalerror(2012111102);
end;
procedure thlcgllvm.a_op_reg_reg_reg_checkoverflow(list: TAsmList; op: TOpCg; size: tdef; src1, src2, dst: tregister; setflags: boolean; var ovloc: tlocation);
begin
if not setflags then
begin
inherited;
exit;
end;
{ use xxx.with.overflow intrinsics }
internalerror(2012111103);
end;
procedure thlcgllvm.a_cmp_const_reg_label(list: TAsmList; size: tdef; cmp_op: topcmp; a: tcgint; reg: tregister; l: tasmlabel);
var
tmpreg : tregister;
invert: boolean;
falselab, tmplab: tasmlabel;
begin
{ since all comparisons return their results in a register, we'll often
get comparisons against true/false -> optimise }
if (size=pasbool8type) and
(cmp_op in [OC_EQ,OC_NE]) then
begin
case cmp_op of
OC_EQ:
invert:=a=0;
OC_NE:
invert:=a=1;
end;
current_asmdata.getjumplabel(falselab);
if invert then
begin
tmplab:=l;
l:=falselab;
falselab:=tmplab;
end;
list.concat(taillvm.op_size_reg_lab_lab(la_br,pasbool8type,reg,l,falselab));
a_label(list,falselab);
exit;
end;
tmpreg:=getregisterfordef(list,size);
a_load_const_reg(list,size,a,tmpreg);
a_cmp_reg_reg_label(list,size,cmp_op,tmpreg,reg,l);
end;
procedure thlcgllvm.a_cmp_reg_reg_label(list: TAsmList; size: tdef; cmp_op: topcmp; reg1, reg2: tregister; l: tasmlabel);
var
resreg: tregister;
falselab: tasmlabel;
begin
if getregtype(reg1)<>getregtype(reg2) then
internalerror(2012111105);
resreg:=getintregister(list,pasbool8type);
current_asmdata.getjumplabel(falselab);
{ invert order of registers. In FPC, cmp_reg_reg(reg1,reg2) means that
e.g. OC_GT is true if "subl %reg1,%reg2" in x86 AT&T is >0. In LLVM,
OC_GT is true if op1>op2 }
list.concat(taillvm.op_reg_cond_size_reg_reg(la_icmp,resreg,cmp_op,size,reg2,reg1));
list.concat(taillvm.op_size_reg_lab_lab(la_br,pasbool8type,resreg,l,falselab));
a_label(list,falselab);
end;
procedure thlcgllvm.a_jmp_always(list: TAsmList; l: tasmlabel);
begin
{ implement in tcg because required by the overridden a_label; doesn't use
any high level stuff anyway }
cg.a_jmp_always(list,l);
end;
procedure thlcgllvm.g_concatcopy(list: TAsmList; size: tdef; const source, dest: treference);
begin
{ todo }
inherited;
end;
procedure thlcgllvm.a_loadfpu_ref_reg(list: TAsmList; fromsize, tosize: tdef; const ref: treference; reg: tregister);
var
tmpreg: tregister;
href: treference;
begin
href:=make_simple_ref(list,ref,fromsize);
{ don't generate different code for loading e.g. extended into cextended,
but to take care of loading e.g. comp (=int64) into double }
if (fromsize.size<>tosize.size) or
((tfloatdef(fromsize).floattype in [s64currency,s64comp])<>
(tfloatdef(tosize).floattype in [s64currency,s64comp])) then
tmpreg:=getfpuregister(list,fromsize)
else
tmpreg:=reg;
{ %tmpreg = load size* %ref }
list.concat(taillvm.op_reg_size_ref(la_load,tmpreg,getpointerdef(fromsize),href));
if tmpreg<>reg then
a_loadfpu_reg_reg(list,fromsize,tosize,tmpreg,reg);
end;
procedure thlcgllvm.a_loadfpu_reg_ref(list: TAsmList; fromsize, tosize: tdef; reg: tregister; const ref: treference);
var
tmpreg: tregister;
href: treference;
begin
href:=make_simple_ref(list,ref,tosize);
{ don't generate different code for loading e.g. extended into cextended,
but to take care of storing e.g. comp (=int64) into double }
if (fromsize.size<>tosize.size) or
((tfloatdef(fromsize).floattype in [s64currency,s64comp])<>
(tfloatdef(tosize).floattype in [s64currency,s64comp])) then
begin
tmpreg:=getfpuregister(list,tosize);
a_loadfpu_reg_reg(list,fromsize,tosize,reg,tmpreg);
end
else
tmpreg:=reg;
{ store tosize tmpreg, tosize* href }
list.concat(taillvm.op_size_reg_size_ref(la_store,tosize,tmpreg,getpointerdef(tosize),href));
end;
procedure thlcgllvm.a_loadfpu_reg_reg(list: TAsmList; fromsize, tosize: tdef; reg1, reg2: tregister);
var
op: tllvmop;
intfromsize,
inttosize: longint;
fromcompcurr,
tocompcurr: boolean;
begin
{ at the value level, s80real and sc80real are the same }
if fromsize<>s80floattype then
intfromsize:=fromsize.size
else
intfromsize:=sc80floattype.size;
if tosize<>s80floattype then
inttosize:=tosize.size
else
inttosize:=sc80floattype.size;
{ s64comp and s64real are handled as int64 by llvm, which complicates
things here for us }
fromcompcurr:=tfloatdef(fromsize).floattype in [s64comp,s64currency];
tocompcurr:=tfloatdef(tosize).floattype in [s64comp,s64currency];
if fromcompcurr=tocompcurr then
begin
if intfromsize<inttosize then
op:=la_fpext
else if intfromsize>inttosize then
op:=la_fptrunc
else
op:=la_bitcast
end
else if fromcompcurr then
op:=la_sitofp
else
op:=la_fptosi;
{ reg2 = bitcast fromllsize reg1 to tollsize }
list.concat(taillvm.op_reg_size_reg_size(op,reg2,fromsize,reg1,tosize));
end;
procedure thlcgllvm.gen_proc_symbol(list: TAsmList);
var
item: TCmdStrListItem;
mangledname: TSymStr;
begin
item:=TCmdStrListItem(current_procinfo.procdef.aliasnames.first);
mangledname:=current_procinfo.procdef.mangledname;
{ predefine the real function name as local/global, so the aliases can
refer to the symbol and get the binding correct }
if (cs_profile in current_settings.moduleswitches) or
(po_global in current_procinfo.procdef.procoptions) then
current_asmdata.DefineAsmSymbol(mangledname,AB_GLOBAL,AT_FUNCTION)
else
current_asmdata.DefineAsmSymbol(mangledname,AB_LOCAL,AT_FUNCTION);
while assigned(item) do
begin
if mangledname<>item.Str then
list.concat(taillvmalias.Create(mangledname,item.str,current_procinfo.procdef,llv_default,lll_default));
item:=TCmdStrListItem(item.next);
end;
list.concat(taillvmprocdef.create(current_procinfo.procdef));
end;
procedure thlcgllvm.gen_proc_symbol_end(list: TAsmList);
begin
list.concat(Tai_symbol_end.Createname(current_procinfo.procdef.mangledname));
{ todo: darwin main proc, or handle in other way? }
end;
procedure thlcgllvm.g_proc_entry(list: TAsmList; localsize: longint; nostackframe: boolean);
begin
list.concatlist(ttgllvm(tg).alloclist)
{ rest: todo }
end;
procedure thlcgllvm.g_proc_exit(list: TAsmList; parasize: longint; nostackframe: boolean);
var
retdef: tdef;
begin
if current_procinfo.procdef.proctypeoption in [potype_constructor,potype_class_constructor] then
if is_implicit_pointer_object_type(current_procinfo.procdef.struct) then
retdef:=current_procinfo.procdef.struct
else
retdef:=getpointerdef(current_procinfo.procdef.struct)
else
retdef:=current_procinfo.procdef.returndef;
if is_void(retdef) then
list.concat(taillvm.op_size(la_ret,retdef))
else
begin
case current_procinfo.procdef.funcretloc[calleeside].location^.loc of
LOC_REGISTER,
LOC_FPUREGISTER:
list.concat(taillvm.op_size_reg(la_ret,retdef,current_procinfo.procdef.funcretloc[calleeside].location^.register))
else
{ todo: complex returns }
internalerror(2012111106);
end;
end;
end;
procedure thlcgllvm.g_overflowcheck(list: TAsmList; const Loc: tlocation; def: tdef);
begin
{ not possible, need ovloc }
internalerror(2012111107);
end;
procedure thlcgllvm.g_overflowCheck_loc(List: TAsmList; const Loc: TLocation; def: TDef; var ovloc: tlocation);
begin
{ todo }
internalerror(2012111108);
end;
procedure thlcgllvm.a_loadmm_ref_reg(list: TAsmList; fromsize, tosize: tdef; const ref: treference; reg: tregister; shuffle: pmmshuffle);
var
href: treference;
begin
if shuffle=mms_movescalar then
a_loadfpu_ref_reg(list,fromsize,tosize,ref,reg)
else
begin
{ todo }
if fromsize<>tosize then
internalerror(2013060220);
href:=make_simple_ref(list,ref,fromsize);
{ %reg = load size* %ref }
list.concat(taillvm.op_reg_size_ref(la_load,reg,getpointerdef(fromsize),href));
end;
end;
procedure thlcgllvm.a_loadmm_reg_ref(list: TAsmList; fromsize, tosize: tdef; reg: tregister; const ref: treference; shuffle: pmmshuffle);
var
href: treference;
begin
if shuffle=mms_movescalar then
a_loadfpu_reg_ref(list,fromsize,tosize,reg,ref)
else
begin
{ todo }
if fromsize<>tosize then
internalerror(2013060220);
href:=make_simple_ref(list,ref,tosize);
{ store tosize reg, tosize* href }
list.concat(taillvm.op_size_reg_size_ref(la_store,tosize,reg,getpointerdef(tosize),href))
end;
end;
procedure thlcgllvm.a_loadmm_reg_reg(list: TAsmList; fromsize, tosize: tdef; reg1, reg2: tregister; shuffle: pmmshuffle);
begin
if shuffle=mms_movescalar then
a_loadfpu_reg_reg(list,fromsize,tosize,reg1,reg2)
else
{ reg2 = bitcast fromllsize reg1 to tollsize }
list.concat(taillvm.op_reg_size_reg_size(la_bitcast,reg2,fromsize,reg1,tosize));
end;
procedure thlcgllvm.a_opmm_reg_reg(list: TAsmList; Op: TOpCG; size: tdef; src, dst: tregister; shuffle: pmmshuffle);
begin
if (op=OP_XOR) and
(src=dst) then
a_load_const_reg(list,size,0,dst)
else
{ todo }
internalerror(2013060221);
end;
procedure thlcgllvm.a_loadmm_intreg_reg(list: TAsmList; fromsize, tosize: tdef; intreg, mmreg: tregister; shuffle: pmmshuffle);
begin
internalerror(2013060222);
end;
procedure thlcgllvm.a_loadmm_reg_intreg(list: TAsmList; fromsize, tosize: tdef; mmreg, intreg: tregister; shuffle: pmmshuffle);
begin
internalerror(2013060223);
end;
procedure thlcgllvm.gen_load_cgpara_loc(list: TAsmList; vardef: tdef; const para: TCGPara; var destloc: tlocation; reusepara: boolean);
var
href : treference;
begin
{ skip e.g. empty records }
if (para.location^.loc = LOC_VOID) then
exit;
para.check_simple_location;
case destloc.loc of
LOC_REFERENCE :
begin
{ If the parameter location is reused we don't need to copy
anything }
if not reusepara then
begin
reference_reset_symbol(href,para.location^.llvmloc,0,para.location^.def.alignment);
if para.location^.llvmvalueloc then
href.refaddr:=addr_full;
{ TODO: if more than one location, use para.location^.def instead (otherwise para.def, because can be
zext/sext -> paraloc.location^.def will be larger) }
a_load_ref_ref(list,para.def,para.def,href,destloc.reference);
end;
end;
{ TODO other possible locations }
else
internalerror(2013102304);
end;
end;
procedure thlcgllvm.a_jmp_flags(list: TAsmList; const f: TResFlags; l: tasmlabel);
begin
internalerror(2013060224);
end;
procedure thlcgllvm.g_flags2reg(list: TAsmList; size: tdef; const f: tresflags; reg: TRegister);
begin
internalerror(2013060225);
end;
procedure thlcgllvm.g_flags2ref(list: TAsmList; size: tdef; const f: tresflags; const ref: TReference);
begin
internalerror(2013060226);
end;
procedure thlcgllvm.a_bit_scan_reg_reg(list: TAsmList; reverse: boolean; size: tdef; src, dst: tregister);
begin
internalerror(2012090201);
end;
procedure thlcgllvm.g_stackpointer_alloc(list: TAsmList; size: longint);
begin
internalerror(2012090203);
end;
procedure thlcgllvm.g_intf_wrapper(list: TAsmList; procdef: tprocdef; const labelname: string; ioffset: longint);
begin
internalerror(2012090204);
end;
procedure thlcgllvm.g_adjust_self_value(list: TAsmList; procdef: tprocdef; ioffset: aint);
begin
internalerror(2012090205);
end;
procedure thlcgllvm.g_local_unwind(list: TAsmList; l: TAsmLabel);
begin
internalerror(2012090206);
end;
function thlcgllvm.make_simple_ref(list: TAsmList; const ref: treference; def: tdef): treference;
var
hreg1,
hreg2: tregister;
tmpref: treference;
begin
{ already simple? }
if (not assigned(ref.symbol) or
(ref.base=NR_NO)) and
(ref.index=NR_NO) and
(ref.offset=0) then
begin
result:=ref;
exit;
end;
{ for now, perform all calculations using plain pointer arithmetic. Later
we can look into optimizations based on getelementptr for structured
accesses (if only to prevent running out of virtual registers).
Assumptions:
* symbol/base register: always type "def*"
* index/offset: always type "ptruinttype" (llvm bitcode has no sign information, so sign doesn't matter) }
hreg1:=getintregister(list,ptruinttype);
if assigned(ref.symbol) then
begin
if ref.base<>NR_NO then
internalerror(2012111301);
reference_reset_symbol(tmpref,ref.symbol,0,ref.alignment);
list.concat(taillvm.getelementptr_reg_size_ref_size_const(hreg1,getpointerdef(def),tmpref,ptruinttype,0));
end
else if ref.base<>NR_NO then
begin
a_load_reg_reg(list,getpointerdef(def),ptruinttype,ref.base,hreg1);
end
else
{ todo: support for absolute addresses on embedded platforms }
internalerror(2012111302);
if ref.index<>NR_NO then
begin
{ SSA... }
hreg2:=getintregister(list,ptruinttype);
a_op_reg_reg_reg(list,OP_ADD,ptruinttype,ref.index,hreg1,hreg2);
hreg1:=hreg2;
end;
if ref.offset<>0 then
begin
hreg2:=getintregister(list,ptruinttype);
a_op_const_reg_reg(list,OP_ADD,ptruinttype,ref.offset,hreg1,hreg2);
hreg1:=hreg2;
end;
hreg2:=getaddressregister(list,getpointerdef(def));
a_load_reg_reg(list,ptruinttype,getpointerdef(def),hreg1,hreg2);
reference_reset_base(result,hreg2,0,ref.alignment);
end;
procedure create_hlcodegen;
begin
hlcg:=thlcgllvm.create;
cgllvm.create_codegen
end;
end.
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