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* less unnecessary regvar loading with if-statements

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This commit is contained in:
Jonas Maebe 2001-12-02 16:19:17 +00:00
parent a52d9a8b79
commit 6dbf240bde
5 changed files with 123 additions and 33 deletions
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22
compiler/i386/n386add.pas
View File

@ -128,16 +128,15 @@ interface
{ ti386addnode.first_string and implement the shortstring concat }
{ manually! The generic routine is different from the i386 one (JM) }
function ti386addnode.first_addstring : tnode;
begin
{ special cases for shortstrings, handled in pass_2 (JM) }
{ can't handle fpc_shortstr_compare with compilerproc either because it }
{ returns its results in the flags instead of in eax }
if ((nodetype = addn) and
is_shortstring(resulttype.def)) or
((nodetype in [ltn,lten,gtn,gten,equaln,unequaln]) and
not(((left.nodetype=stringconstn) and (str_length(left)=0)) or
((right.nodetype=stringconstn) and (str_length(right)=0))) and
is_shortstring(left.resulttype.def)) then
if (((nodetype = addn) and
is_shortstring(resulttype.def)) or
((nodetype in [ltn,lten,gtn,gten,equaln,unequaln]) and
is_shortstring(left.resulttype.def))) then
begin
if nodetype = addn then
location.loc := LOC_MEM
@ -463,7 +462,7 @@ interface
otl:=truelabel;
getlabel(truelabel);
secondpass(left);
maketojumpbool(left);
maketojumpbool(left,lr_load_regvars);
emitlab(truelabel);
truelabel:=otl;
end;
@ -471,7 +470,7 @@ interface
ofl:=falselabel;
getlabel(falselabel);
secondpass(left);
maketojumpbool(left);
maketojumpbool(left,lr_load_regvars);
emitlab(falselabel);
falselabel:=ofl;
end;
@ -479,7 +478,7 @@ interface
CGMessage(type_e_mismatch);
end;
secondpass(right);
maketojumpbool(right);
maketojumpbool(right,lr_load_regvars);
end;
else
CGMessage(type_e_mismatch);
@ -1864,7 +1863,10 @@ begin
end.
{
$Log$
Revision 1.25 2001-10-12 13:51:51 jonas
Revision 1.26 2001-12-02 16:19:17 jonas
* less unnecessary regvar loading with if-statements
Revision 1.25 2001/10/12 13:51:51 jonas
* fixed internalerror(10) due to previous fpu overflow fixes ("merged")
* fixed bug in n386add (introduced after compilerproc changes for string
operations) where calcregisters wasn't called for shortstring addnodes

6
compiler/i386/n386inl.pas
View File

@ -97,7 +97,7 @@ implementation
getlabel(truelabel);
getlabel(falselabel);
secondpass(tcallparanode(left).left);
maketojumpbool(tcallparanode(left).left);
maketojumpbool(tcallparanode(left).left,lr_load_regvars);
emitlab(falselabel);
{ erroraddr }
emit_reg(A_PUSH,S_L,R_EBP);
@ -843,8 +843,8 @@ begin
end.
{
$Log$
Revision 1.27 2001-09-30 16:16:28 jonas
- removed unused units form uses-clause and unused local vars
Revision 1.28 2001-12-02 16:19:17 jonas
* less unnecessary regvar loading with if-statements
Revision 1.26 2001/09/28 20:38:51 jonas
* fixed big bug in my previous changes (the arguent for bts/btr is always

7
compiler/i386/n386mat.pas
View File

@ -860,7 +860,7 @@ implementation
truelabel:=falselabel;
falselabel:=hl;
secondpass(left);
maketojumpbool(left);
maketojumpbool(left,lr_load_regvars);
hl:=truelabel;
truelabel:=falselabel;
falselabel:=hl;
@ -1016,7 +1016,10 @@ begin
end.
{
$Log$
Revision 1.16 2001-09-05 15:22:10 jonas
Revision 1.17 2001-12-02 16:19:17 jonas
* less unnecessary regvar loading with if-statements
Revision 1.16 2001/09/05 15:22:10 jonas
* made multiplying, dividing and mod'ing of int64 and qword processor
independent with compilerprocs (+ small optimizations by using shift/and
where possible)

25
compiler/i386/n386util.pas
View File

@ -29,6 +29,9 @@ interface
uses
symtype,node;
type
tloadregvars = (lr_dont_load_regvars, lr_load_regvars);
function maybe_push(needed : byte;p : tnode;isint64 : boolean) : boolean;
function maybe_pushfpu(needed : byte;p : tnode) : boolean;
{$ifdef TEMPS_NOT_PUSH}
@ -47,7 +50,7 @@ interface
procedure loadwide2short(source,dest : tnode);
procedure loadinterfacecom(p: tbinarynode);
procedure maketojumpbool(p : tnode);
procedure maketojumpbool(p : tnode; loadregvars: tloadregvars);
procedure emitoverflowcheck(p:tnode);
procedure emitrangecheck(p:tnode;todef:tdef);
procedure firstcomplex(p : tbinarynode);
@ -869,9 +872,14 @@ implementation
Emit Functions
*****************************************************************************}
procedure maketojumpbool(p : tnode);
procedure maketojumpbool(p : tnode; loadregvars: tloadregvars);
{
produces jumps to true respectively false labels using boolean expressions
depending on whether the loading of regvars is currently being
synchronized manually (such as in an if-node) or automatically (most of
the other cases where this procedure is called), loadregvars can be
"lr_load_regvars" or "lr_dont_load_regvars"
}
var
opsize : topsize;
@ -883,7 +891,8 @@ implementation
aktfilepos:=p.fileinfo;
if is_boolean(p.resulttype.def) then
begin
load_all_regvars(exprasmlist);
if loadregvars = lr_load_regvars then
load_all_regvars(exprasmlist);
if is_constboolnode(p) then
begin
if tordconstnode(p).value<>0 then
@ -896,6 +905,8 @@ implementation
opsize:=def_opsize(p.resulttype.def);
case p.location.loc of
LOC_CREGISTER,LOC_REGISTER : begin
if (p.location.loc = LOC_CREGISTER) then
load_regvar_reg(exprasmlist,p.location.register);
emit_reg_reg(A_OR,opsize,p.location.register,
p.location.register);
ungetregister(p.location.register);
@ -1155,8 +1166,6 @@ implementation
else
op:=A_MOVZX;
is_reg:=(p.location.loc in [LOC_REGISTER,LOC_CREGISTER]);
getexplicitregister32(R_EDI);
{ use the trick that }
{ a <= x <= b <=> 0 <= x-a <= b-a <=> cardinal(x-a) <= cardinal(b-a) }
@ -1199,6 +1208,7 @@ implementation
lto := 0;
end;
getexplicitregister32(R_EDI);
if is_reg and
(opsize = S_L) then
emit_ref_reg(A_LEA,opsize,new_reference(p.location.register,-lto),
@ -1534,7 +1544,10 @@ implementation
end.
{
$Log$
Revision 1.22 2001-10-12 13:51:52 jonas
Revision 1.23 2001-12-02 16:19:17 jonas
* less unnecessary regvar loading with if-statements
Revision 1.22 2001/10/12 13:51:52 jonas
* fixed internalerror(10) due to previous fpu overflow fixes ("merged")
* fixed bug in n386add (introduced after compilerproc changes for string
operations) where calcregisters wasn't called for shortstring addnodes

96
compiler/ncgflw.pas
View File

@ -66,7 +66,7 @@ interface
implementation
uses
verbose,globals,systems,
verbose,globals,systems,globtype,
symconst,symdef,symsym,aasm,types,
cgbase,temp_gen,pass_2,
cpubase,cpuasm,cpuinfo,
@ -130,9 +130,7 @@ implementation
cleartempgen;
secondpass(left);
load_all_regvars(exprasmlist);
maketojumpbool(left);
maketojumpbool(left,lr_load_regvars);
cg.a_label(exprasmlist,lbreak);
truelabel:=otlabel;
falselabel:=oflabel;
@ -152,6 +150,13 @@ implementation
var
hl,otlabel,oflabel : tasmlabel;
org_regvar_loaded,
then_regvar_loaded,
else_regvar_loaded : regvar_booleanarray;
org_list,
then_list,
else_list : taasmoutput;
regcounter: tregister;
begin
otlabel:=truelabel;
@ -160,40 +165,104 @@ implementation
getlabel(falselabel);
cleartempgen;
secondpass(left);
load_all_regvars(exprasmlist);
maketojumpbool(left);
{ save regvars loaded in the beginning so that we can restore them }
{ when processing the else-block }
if cs_regalloc in aktglobalswitches then
begin
org_list := exprasmlist;
exprasmlist := taasmoutput.create;
end;
maketojumpbool(left,lr_dont_load_regvars);
if cs_regalloc in aktglobalswitches then
org_regvar_loaded := regvar_loaded;
if assigned(right) then
begin
cg.a_label(exprasmlist,truelabel);
cleartempgen;
secondpass(right);
{ automatically done for blocks, but not for statements (JM) }
load_all_regvars(exprasmlist);
end;
{ save current asmlist (previous instructions + then-block) and }
{ loaded regvar state and create new clean ones }
if cs_regalloc in aktglobalswitches then
begin
then_regvar_loaded := regvar_loaded;
regvar_loaded := org_regvar_loaded;
then_list := exprasmlist;
exprasmlist := taasmoutput.create;
end;
if assigned(t1) then
begin
if assigned(right) then
begin
getlabel(hl);
{ do go back to if line !! }
aktfilepos:=exprasmList.getlasttaifilepos^;
if not(cs_regalloc in aktglobalswitches) then
aktfilepos:=exprasmList.getlasttaifilepos^
else
aktfilepos:=then_list.getlasttaifilepos^;
cg.a_jmp_cond(exprasmlist,OC_None,hl);
end;
cg.a_label(exprasmlist,falselabel);
cleartempgen;
secondpass(t1);
load_all_regvars(exprasmlist);
{ save current asmlist (previous instructions + else-block) }
{ and loaded regvar state and create a new clean list }
if cs_regalloc in aktglobalswitches then
begin
else_regvar_loaded := regvar_loaded;
else_list := exprasmlist;
exprasmlist := taasmoutput.create;
end;
if assigned(right) then
cg.a_label(exprasmlist,hl);
end
else
begin
if cs_regalloc in aktglobalswitches then
begin
else_regvar_loaded := regvar_loaded;
else_list := exprasmlist;
exprasmlist := taasmoutput.create;
end;
cg.a_label(exprasmlist,falselabel);
end;
if not(assigned(right)) then
begin
cg.a_label(exprasmlist,truelabel);
end;
if cs_regalloc in aktglobalswitches then
begin
{ add loads of regvars at the end of the then- and else-blocks }
{ so that at the end of both blocks the same regvars are loaded }
{ no else block? }
if not assigned(t1) then
sync_regvars(org_list,then_list,org_regvar_loaded,
then_regvar_loaded)
{ no then block? }
else if not assigned(right) then
sync_regvars(org_list,else_list,org_regvar_loaded,
else_regvar_loaded)
{ both else and then blocks }
else
sync_regvars(then_list,else_list,then_regvar_loaded,
else_regvar_loaded);
{ add all lists together }
org_list.concatlist(then_list);
then_list.free;
org_list.concatlist(else_list);
else_list.free;
org_list.concatlist(exprasmlist);
exprasmlist.free;
exprasmlist := org_list;
end;
truelabel:=otlabel;
falselabel:=oflabel;
end;
@ -390,7 +459,7 @@ implementation
label
do_jmp;
begin
load_all_regvars(exprasmlist);
{ load_all_regvars(exprasmlist); }
include(flowcontrol,fc_exit);
if assigned(left) then
if left.nodetype=assignn then
@ -582,7 +651,10 @@ begin
end.
{
$Log$
Revision 1.4 2001-11-02 22:58:01 peter
Revision 1.5 2001-12-02 16:19:17 jonas
* less unnecessary regvar loading with if-statements
Revision 1.4 2001/11/02 22:58:01 peter
* procsym definition rewrite
Revision 1.3 2001/10/04 14:33:28 jonas