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+ added an optimized implementation of a_op64_reg_ref for i8086; this improves

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the generated code on i8086 for things like inc(int64_var,int64_var) and
  dec(int64_var,int64_var)

git-svn-id: trunk@35657 -
This commit is contained in:
nickysn 2017-03-25 18:45:31 +00:00
parent 34327000d8
commit f0a63fa895
1 changed files with 24 additions and 0 deletions
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24
compiler/i8086/cgcpu.pas
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@ -103,6 +103,7 @@ unit cgcpu;
tcg64f8086 = class(tcg64f32)
procedure a_op64_ref_reg(list : TAsmList;op:TOpCG;size : tcgsize;const ref : treference;reg : tregister64);override;
procedure a_op64_reg_ref(list : TAsmList;op:TOpCG;size : tcgsize;reg : tregister64; const ref: treference);override;
procedure a_op64_reg_reg(list : TAsmList;op:TOpCG;size : tcgsize;regsrc,regdst : tregister64);override;
procedure a_op64_const_reg(list : TAsmList;op:TOpCG;size : tcgsize;value : int64;reg : tregister64);override;
procedure a_op64_const_ref(list : TAsmList;op:TOpCG;size : tcgsize;value : int64;const ref : treference);override;
@ -2321,6 +2322,29 @@ unit cgcpu;
end;
procedure tcg64f8086.a_op64_reg_ref(list : TAsmList;op:TOpCG;size : tcgsize;reg : tregister64; const ref: treference);
var
op1,op2 : TAsmOp;
tempref : treference;
begin
if not(op in [OP_NEG,OP_NOT]) then
begin
get_64bit_ops(op,op1,op2);
tempref:=ref;
tcgx86(cg).make_simple_ref(list,tempref);
list.concat(taicpu.op_reg_ref(op1,S_W,reg.reglo,tempref));
inc(tempref.offset,2);
list.concat(taicpu.op_reg_ref(op2,S_W,GetNextReg(reg.reglo),tempref));
inc(tempref.offset,2);
list.concat(taicpu.op_reg_ref(op2,S_W,reg.reghi,tempref));
inc(tempref.offset,2);
list.concat(taicpu.op_reg_ref(op2,S_W,GetNextReg(reg.reghi),tempref));
end
else
inherited;
end;
procedure tcg64f8086.a_op64_reg_reg(list : TAsmList;op:TOpCG;size : tcgsize;regsrc,regdst : tregister64);
var
op1,op2 : TAsmOp;