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* use g_concatcopy_unaligned on MIPS if needed

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(cherry picked from commit 9c72ab651d)
This commit is contained in:
florian 2022-08-06 15:04:35 +02:00
parent 3f15b21e6c
commit 58bcbe8188
1 changed files with 71 additions and 68 deletions
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139
compiler/mips/cgcpu.pas
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@ -1530,83 +1530,86 @@ begin
assigned(current_procinfo) and
(pi_do_call in current_procinfo.flags) then
g_concatcopy_move(list, Source, dest, len)
else if ((source.alignment<>0) and (source.alignment<4)) or
((dest.alignment<>0) and (dest.alignment<4)) then
g_concatcopy_unaligned(list, Source, dest, len)
else
begin
Count := len div 4;
if (count<=4) and reference_is_reusable(source) then
src:=source
else
begin
reference_reset(src,sizeof(aint),source.volatility);
{ load the address of source into src.base }
src.base := GetAddressRegister(list);
a_loadaddr_ref_reg(list, Source, src.base);
end;
if (count<=4) and reference_is_reusable(dest) then
dst:=dest
else
begin
reference_reset(dst,sizeof(aint),dest.volatility);
{ load the address of dest into dst.base }
dst.base := GetAddressRegister(list);
a_loadaddr_ref_reg(list, dest, dst.base);
end;
{ generate a loop }
if Count > 4 then
begin
countreg := GetIntRegister(list, OS_INT);
tmpreg1 := GetIntRegister(list, OS_INT);
a_load_const_reg(list, OS_INT, Count, countreg);
current_asmdata.getjumplabel(lab);
a_label(list, lab);
list.concat(taicpu.op_reg_ref(A_LW, tmpreg1, src));
list.concat(taicpu.op_reg_ref(A_SW, tmpreg1, dst));
list.concat(taicpu.op_reg_reg_const(A_ADDIU, src.base, src.base, 4));
list.concat(taicpu.op_reg_reg_const(A_ADDIU, dst.base, dst.base, 4));
list.concat(taicpu.op_reg_reg_const(A_ADDIU, countreg, countreg, -1));
a_cmp_reg_reg_label(list,OS_INT,OC_GT,NR_R0,countreg,lab);
len := len mod 4;
end;
{ unrolled loop }
Count := len div 4;
if Count > 0 then
begin
tmpreg1 := GetIntRegister(list, OS_INT);
count2:=1;
while count2 <= Count do
Count := len div 4;
if (count<=4) and reference_is_reusable(source) then
src:=source
else
begin
reference_reset(src,sizeof(aint),source.volatility);
{ load the address of source into src.base }
src.base := GetAddressRegister(list);
a_loadaddr_ref_reg(list, Source, src.base);
end;
if (count<=4) and reference_is_reusable(dest) then
dst:=dest
else
begin
reference_reset(dst,sizeof(aint),dest.volatility);
{ load the address of dest into dst.base }
dst.base := GetAddressRegister(list);
a_loadaddr_ref_reg(list, dest, dst.base);
end;
{ generate a loop }
if Count > 4 then
begin
countreg := GetIntRegister(list, OS_INT);
tmpreg1 := GetIntRegister(list, OS_INT);
a_load_const_reg(list, OS_INT, Count, countreg);
current_asmdata.getjumplabel(lab);
a_label(list, lab);
list.concat(taicpu.op_reg_ref(A_LW, tmpreg1, src));
list.concat(taicpu.op_reg_ref(A_SW, tmpreg1, dst));
list.concat(taicpu.op_reg_reg_const(A_ADDIU, src.base, src.base, 4));
list.concat(taicpu.op_reg_reg_const(A_ADDIU, dst.base, dst.base, 4));
list.concat(taicpu.op_reg_reg_const(A_ADDIU, countreg, countreg, -1));
a_cmp_reg_reg_label(list,OS_INT,OC_GT,NR_R0,countreg,lab);
len := len mod 4;
end;
{ unrolled loop }
Count := len div 4;
if Count > 0 then
begin
tmpreg1 := GetIntRegister(list, OS_INT);
count2:=1;
while count2 <= Count do
begin
list.concat(taicpu.op_reg_ref(A_LW, tmpreg1, src));
list.concat(taicpu.op_reg_ref(A_SW, tmpreg1, dst));
Inc(src.offset, 4);
Inc(dst.offset, 4);
Inc(count2);
end;
len := len mod 4;
end;
if (len and 4) <> 0 then
begin
hreg := GetIntRegister(list, OS_INT);
a_load_ref_reg(list, OS_32, OS_32, src, hreg);
a_load_reg_ref(list, OS_32, OS_32, hreg, dst);
Inc(src.offset, 4);
Inc(dst.offset, 4);
Inc(count2);
end;
len := len mod 4;
{ copy the leftovers }
if (len and 2) <> 0 then
begin
hreg := GetIntRegister(list, OS_INT);
a_load_ref_reg(list, OS_16, OS_16, src, hreg);
a_load_reg_ref(list, OS_16, OS_16, hreg, dst);
Inc(src.offset, 2);
Inc(dst.offset, 2);
end;
if (len and 1) <> 0 then
begin
hreg := GetIntRegister(list, OS_INT);
a_load_ref_reg(list, OS_8, OS_8, src, hreg);
a_load_reg_ref(list, OS_8, OS_8, hreg, dst);
end;
end;
if (len and 4) <> 0 then
begin
hreg := GetIntRegister(list, OS_INT);
a_load_ref_reg(list, OS_32, OS_32, src, hreg);
a_load_reg_ref(list, OS_32, OS_32, hreg, dst);
Inc(src.offset, 4);
Inc(dst.offset, 4);
end;
{ copy the leftovers }
if (len and 2) <> 0 then
begin
hreg := GetIntRegister(list, OS_INT);
a_load_ref_reg(list, OS_16, OS_16, src, hreg);
a_load_reg_ref(list, OS_16, OS_16, hreg, dst);
Inc(src.offset, 2);
Inc(dst.offset, 2);
end;
if (len and 1) <> 0 then
begin
hreg := GetIntRegister(list, OS_INT);
a_load_ref_reg(list, OS_8, OS_8, src, hreg);
a_load_reg_ref(list, OS_8, OS_8, hreg, dst);
end;
end;
end;