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+ added a correct implementation of TAOptBase.SuperRegistersEqual for the Z80

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git-svn-id: trunk@45337 -
This commit is contained in:
nickysn 2020-05-11 14:21:26 +00:00
parent 50261464da
commit 5947adcd7b
2 changed files with 32 additions and 0 deletions
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6
compiler/aoptbase.pas
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@ -335,7 +335,13 @@ unit aoptbase;
as SuperRegistersEqual is used a lot
}
{$ifdef Z80}
{ Z80 registers are indexed in an incompatible way (without R_SUBH), so it
needs a special check. }
Result:=super_registers_equal(reg1,reg2);
{$else Z80}
Result:=(DWord(reg1) and $ff00ffff)=(DWord(reg2) and $ff00ffff);
{$endif Z80}
end;
{ ******************* Processor dependent stuff *************************** }

26
compiler/z80/cpubase.pas
View File

@ -284,6 +284,7 @@ unit cpubase;
procedure split_regpair(regpair:Tregister;out reglo,reghi:Tregister);
{ Checks if sreg is a subset of reg (e.g. NR_H is a subset of NR_HL }
function register_in(sreg,reg:Tregister):boolean;
function super_registers_equal(reg1,reg2 : TRegister) : Boolean;
function inverse_cond(const c: TAsmCond): TAsmCond; {$ifdef USEINLINE}inline;{$endif USEINLINE}
function conditions_equal(const c1, c2: TAsmCond): boolean; {$ifdef USEINLINE}inline;{$endif USEINLINE}
@ -455,6 +456,31 @@ unit cpubase;
end;
function super_registers_equal(reg1, reg2: TRegister): Boolean;
begin
case reg1 of
NR_A,NR_F,NR_AF:
result:=(reg2=NR_A) or (reg2=NR_F) or (reg2=NR_AF);
NR_B,NR_C,NR_BC:
result:=(reg2=NR_B) or (reg2=NR_C) or (reg2=NR_BC);
NR_D,NR_E,NR_DE:
result:=(reg2=NR_D) or (reg2=NR_E) or (reg2=NR_DE);
NR_H,NR_L,NR_HL:
result:=(reg2=NR_H) or (reg2=NR_L) or (reg2=NR_HL);
NR_A_,NR_F_,NR_AF_:
result:=(reg2=NR_A_) or (reg2=NR_F_) or (reg2=NR_AF_);
NR_B_,NR_C_,NR_BC_:
result:=(reg2=NR_B_) or (reg2=NR_C_) or (reg2=NR_BC_);
NR_D_,NR_E_,NR_DE_:
result:=(reg2=NR_D_) or (reg2=NR_E_) or (reg2=NR_DE_);
NR_H_,NR_L_,NR_HL_:
result:=(reg2=NR_H_) or (reg2=NR_L_) or (reg2=NR_HL_);
else
result:=reg1=reg2;
end;
end;
function inverse_cond(const c: TAsmCond): TAsmCond; {$ifdef USEINLINE}inline;{$endif USEINLINE}
const
inverse: array[TAsmCond] of TAsmCond=(C_None,