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* do not allocate an extra register for some integer operations if not needed

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git-svn-id: trunk@43412 -
This commit is contained in:
florian 2019-11-07 21:08:08 +00:00
parent b0ac0ddcc9
commit c8f746b881
2 changed files with 8 additions and 8 deletions
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3
compiler/cgobj.pas
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@ -1664,7 +1664,8 @@ implementation
LOC_MMREGISTER,LOC_CMMREGISTER:
a_loadmm_reg_intreg(list,loc.size,tosize,loc.register,reg,mms_movescalar);
else
internalerror(200109092);
begin writeln(loc.loc);
internalerror(200109092); end;
end;
end;

13
compiler/x86/nx86add.pas
View File

@ -245,8 +245,8 @@ unit nx86add;
{ maybe we can reuse a constant register when the
operation is a comparison that doesn't change the
value of the register }
hlcg.location_force_reg(current_asmdata.CurrAsmList,left.location,left.resultdef,opdef,(nodetype in [ltn,lten,gtn,gten,equaln,unequaln]));
location:=left.location;
hlcg.location_force_reg(current_asmdata.CurrAsmList,left.location,left.resultdef,opdef,(nodetype in [ltn,lten,gtn,gten,equaln,unequaln]));
location:=left.location;
end
else
begin
@ -1474,8 +1474,9 @@ unit nx86add;
pass_left_right;
{ do have to allocate a register? If yes, then three opcode instructions are better }
if ((left.location.loc<>LOC_REGISTER) and (right.location.loc<>LOC_REGISTER)) or
{ do have to allocate a register? If yes, then three opcode instructions are better, however for sub three op code instructions
make no sense if right is a reference }
if ((left.location.loc<>LOC_REGISTER) and (right.location.loc<>LOC_REGISTER) and ((nodetype<>subn) or not(right.location.loc in [LOC_REFERENCE,LOC_CREFERENCE]))) or
((nodetype=addn) and (left.location.loc in [LOC_REGISTER,LOC_CREGISTER,LOC_CONSTANT]) and (right.location.loc in [LOC_REGISTER,LOC_CREGISTER,LOC_CONSTANT])) then
begin
{ allocate registers }
@ -1524,12 +1525,10 @@ unit nx86add;
begin
if right.location.loc<>LOC_REGISTER then
begin
{ tmpreg:=cg.getintregister(current_asmdata.CurrAsmList,opsize);
tmpreg:=cg.getintregister(current_asmdata.CurrAsmList,opsize);
cg.a_load_loc_reg(current_asmdata.CurrAsmList,opsize,left.location,tmpreg);
location_reset(left.location,LOC_REGISTER,opsize);
left.location.register:=tmpreg;
}
Internalerror(2018031102);
end
else
begin