paweld/fpc
1
0
Fork 0
mirror of https://gitlab.com/freepascal.org/fpc/source.git synced 2025-11-04 15:39:24 +01:00
Code Issues Packages Projects Releases Wiki Activity

+ make use of sbi/cbi

Browse Source 
git-svn-id: trunk@30964 -
This commit is contained in:
florian 2015-05-31 21:11:53 +00:00
parent a3553a7320
commit 9216e561e2
1 changed files with 63 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

63
compiler/avr/aoptcpu.pas
View File

@ -43,6 +43,7 @@ Type
Implementation
uses
cutils,
cpuinfo,
aasmbase,aasmcpu,
globals,globtype,
@ -89,6 +90,14 @@ Implementation
end;
function MatchInstruction(const instr: tai; const op: TAsmOp): boolean;
begin
result :=
(instr.typ = ait_instruction) and
(taicpu(instr).opcode = op);
end;
function TCpuAsmOptimizer.RegInInstruction(Reg: TRegister; p1: tai): Boolean;
begin
If (p1.typ = ait_instruction) and (taicpu(p1).opcode in [A_MUL,A_MULS,A_FMUL,A_FMULS,A_FMULSU]) and
@ -189,6 +198,60 @@ Implementation
taicpu(p).opcode:=A_IN;
taicpu(p).loadconst(1,taicpu(p).oper[1]^.ref^.offset-32);
end;
A_IN:
if GetNextInstruction(p,hp1) then
begin
{
in rX,Y
ori rX,n
out Y,rX
into
sbi rX,lg(n)
}
if MatchInstruction(hp1,A_ORI) and
(taicpu(hp1).oper[0]^.reg=taicpu(p).oper[0]^.reg) and
(PopCnt(byte(taicpu(hp1).oper[1]^.val))=1) and
GetNextInstruction(hp1,hp2) and
MatchInstruction(hp2,A_OUT) and
MatchOperand(taicpu(hp2).oper[1]^,taicpu(p).oper[0]^) and
MatchOperand(taicpu(hp2).oper[0]^,taicpu(p).oper[1]^) then
begin
taicpu(p).opcode:=A_SBI;
taicpu(p).loadconst(0,taicpu(p).oper[1]^.val);
taicpu(p).loadconst(1,BsrByte(taicpu(hp1).oper[1]^.val)-1);
asml.Remove(hp1);
hp1.Free;
asml.Remove(hp2);
hp2.Free;
result:=true;
end
{
in rX,Y
andi rX,not(n)
out Y,rX
into
cbi rX,lg(n)
}
else if MatchInstruction(hp1,A_ANDI) and
(taicpu(hp1).oper[0]^.reg=taicpu(p).oper[0]^.reg) and
(PopCnt(byte(not(taicpu(hp1).oper[1]^.val)))=1) and
GetNextInstruction(hp1,hp2) and
MatchInstruction(hp2,A_OUT) and
MatchOperand(taicpu(hp2).oper[1]^,taicpu(p).oper[0]^) and
MatchOperand(taicpu(hp2).oper[0]^,taicpu(p).oper[1]^) then
begin
taicpu(p).opcode:=A_CBI;
taicpu(p).loadconst(0,taicpu(p).oper[1]^.val);
taicpu(p).loadconst(1,BsrByte(not(taicpu(hp1).oper[1]^.val))-1);
asml.Remove(hp1);
hp1.Free;
asml.Remove(hp2);
hp2.Free;
result:=true;
end;
end;
A_CLR:
begin
{ turn the common