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+ implemented 8-bit signed comparisons as well

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git-svn-id: branches/z80@44583 -
This commit is contained in:
nickysn 2020-04-04 20:59:52 +00:00
parent 8a1be73ce0
commit fdc24164a0
1 changed files with 56 additions and 4 deletions
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60
compiler/z80/nz80add.pas
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@ -74,9 +74,9 @@ interface
ltn:
GetResFlags:=F_NotPossible;
lten:
GetResFlags:=F_NotPossible;
GetResFlags:=F_P;
gtn:
GetResFlags:=F_NotPossible;
GetResFlags:=F_M;
gten:
GetResFlags:=F_NotPossible;
else
@ -85,13 +85,13 @@ interface
else
case NodeType of
ltn:
GetResFlags:=F_NotPossible;
GetResFlags:=F_M;
lten:
GetResFlags:=F_NotPossible;
gtn:
GetResFlags:=F_NotPossible;
gten:
GetResFlags:=F_NotPossible;
GetResFlags:=F_P;
else
internalerror(2014082021);
end;
@ -190,6 +190,8 @@ interface
i : longint;
opdef: tdef;
opsize: TCgSize;
ai: taicpu;
l: TAsmLabel;
begin
unsigned:=not(is_signed(left.resultdef)) or
not(is_signed(right.resultdef));
@ -241,6 +243,56 @@ interface
internalerror(2020040402);
end;
location_reset(location,LOC_FLAGS,OS_NO);
location.resflags:=getresflags(unsigned);
end
else if opsize=OS_S8 then
begin
if getresflags(unsigned)=F_NotPossible then
swapleftright;
if left.location.loc<>LOC_REGISTER then
hlcg.location_force_reg(current_asmdata.CurrAsmList,left.location,left.resultdef,left.resultdef,false);
if right.location.loc in [LOC_REFERENCE,LOC_CREFERENCE] then
begin
if (right.location.reference.base=NR_IX) and (right.location.reference.index=NR_NO) then
begin
cg.getcpuregister(current_asmdata.CurrAsmList,NR_A);
cg.a_load_loc_reg(current_asmdata.CurrAsmList,def_cgsize(left.resultdef),left.location,NR_A);
current_asmdata.CurrAsmList.Concat(taicpu.op_reg_ref(A_SUB,NR_A,right.location.reference));
end
else
hlcg.location_force_reg(current_asmdata.CurrAsmList,right.location,right.resultdef,right.resultdef,false);
end;
case right.location.loc of
LOC_CONSTANT:
begin
cg.getcpuregister(current_asmdata.CurrAsmList,NR_A);
cg.a_load_loc_reg(current_asmdata.CurrAsmList,def_cgsize(left.resultdef),left.location,NR_A);
current_asmdata.CurrAsmList.Concat(taicpu.op_reg_const(A_SUB,NR_A,right.location.value));
end;
LOC_REGISTER,LOC_CREGISTER:
begin
cg.getcpuregister(current_asmdata.CurrAsmList,NR_A);
cg.a_load_loc_reg(current_asmdata.CurrAsmList,def_cgsize(left.resultdef),left.location,NR_A);
current_asmdata.CurrAsmList.Concat(taicpu.op_reg_reg(A_SUB,NR_A,right.location.register));
end;
LOC_REFERENCE,LOC_CREFERENCE:
begin
{ Already handled before the case statement. Nothing to do here. }
end;
else
internalerror(2020040402);
end;
current_asmdata.getjumplabel(l);
ai:=taicpu.op_cond_sym(A_JP,C_PO,l);
ai.is_jmp:=true;
current_asmdata.CurrAsmList.concat(ai);
current_asmdata.CurrAsmList.Concat(taicpu.op_reg_const(A_XOR,NR_A,$80));
cg.a_label(current_asmdata.CurrAsmList,l);
cg.ungetcpuregister(current_asmdata.CurrAsmList,NR_A);
location_reset(location,LOC_FLAGS,OS_NO);
location.resflags:=getresflags(unsigned);
end