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* correct bugs for ts010026 and ts010029 in win32 mode

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in copyvaluparas
  + use SHL instead of IMUL if constant is a power of 2 in copyvalueparas
This commit is contained in:
pierre 2000-04-26 10:03:45 +00:00
parent 3174b39bcc
commit 477eacdff2
1 changed files with 38 additions and 11 deletions
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49
compiler/cgai386.pas
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@ -2865,7 +2865,7 @@ procedure mov_reg_to_dest(p : ptree; s : topsize; reg : tregister);
var
href1,href2 : treference;
r : preference;
len : longint;
power,len : longint;
opsize : topsize;
again,ok : pasmlabel;
begin
@ -2890,9 +2890,17 @@ procedure mov_reg_to_dest(p : ptree; s : topsize; reg : tregister);
exprasmlist^.concat(new(paicpu,
op_reg(A_INC,S_L,R_EDI)));
exprasmlist^.concat(new(paicpu,
op_const_reg(A_IMUL,S_L,
parraydef(pvarsym(p)^.vartype.def)^.elesize,R_EDI)));
if (parraydef(pvarsym(p)^.vartype.def)^.elesize<>1) then
begin
if ispowerof2(parraydef(pvarsym(p)^.vartype.def)^.elesize, power) then
exprasmlist^.concat(new(paicpu,
op_const_reg(A_SHL,S_L,
power,R_EDI)))
else
exprasmlist^.concat(new(paicpu,
op_const_reg(A_IMUL,S_L,
parraydef(pvarsym(p)^.vartype.def)^.elesize,R_EDI)));
end;
{$ifndef NOTARGETWIN32}
{ windows guards only a few pages for stack growing, }
{ so we have to access every page first }
@ -2932,13 +2940,22 @@ procedure mov_reg_to_dest(p : ptree; s : topsize; reg : tregister);
exprasmlist^.concat(new(paicpu,
op_reg(A_INC,S_L,R_EDI)));
exprasmlist^.concat(new(paicpu,
op_const_reg(A_IMUL,S_L,
parraydef(pvarsym(p)^.vartype.def)^.elesize,R_EDI)));
if (parraydef(pvarsym(p)^.vartype.def)^.elesize<>1) then
begin
if ispowerof2(parraydef(pvarsym(p)^.vartype.def)^.elesize, power) then
exprasmlist^.concat(new(paicpu,
op_const_reg(A_SHL,S_L,
power,R_EDI)))
else
exprasmlist^.concat(new(paicpu,
op_const_reg(A_IMUL,S_L,
parraydef(pvarsym(p)^.vartype.def)^.elesize,R_EDI)));
end;
end;
{$endif NOTARGETWIN32}
{$else not NOTARGETWIN32}
exprasmlist^.concat(new(paicpu,
op_reg_reg(A_SUB,S_L,R_EDI,R_ESP)));
{$endif NOTARGETWIN32}
{ load destination }
exprasmlist^.concat(new(paicpu,
op_reg_reg(A_MOV,S_L,R_ESP,R_EDI)));
@ -2984,7 +3001,12 @@ procedure mov_reg_to_dest(p : ptree; s : topsize; reg : tregister);
len:=len shr 1;
end;
exprasmlist^.concat(new(paicpu,
if ispowerof2(len, power) then
exprasmlist^.concat(new(paicpu,
op_const_reg(A_SHL,S_L,
power,R_ECX)))
else
exprasmlist^.concat(new(paicpu,
op_const_reg(A_IMUL,S_L,len,R_ECX)));
exprasmlist^.concat(new(paicpu,
op_none(A_REP,S_NO)));
@ -3897,7 +3919,12 @@ procedure mov_reg_to_dest(p : ptree; s : topsize; reg : tregister);
end.
{
$Log$
Revision 1.97 2000-04-24 12:48:37 peter
Revision 1.98 2000-04-26 10:03:45 pierre
* correct bugs for ts010026 and ts010029 in win32 mode
in copyvaluparas
+ use SHL instead of IMUL if constant is a power of 2 in copyvalueparas
Revision 1.97 2000/04/24 12:48:37 peter
* removed unused vars
Revision 1.96 2000/04/10 12:23:18 jonas
@ -4048,4 +4075,4 @@ end.
Revision 1.59 1999/11/15 14:04:00 pierre
* self pointer stabs for local function was wrong
}
}