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* support transfering a cgpara that is stored in multiple paralocs into a

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single register, by first storing everything consecutively to memory and
    then loading it. Required for "homogeneous float aggregates" on AArch64

git-svn-id: trunk@29815 -
This commit is contained in:
Jonas Maebe 2015-02-23 22:47:32 +00:00
parent e6511bcb33
commit b8c8ef8489
1 changed files with 37 additions and 7 deletions
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44
compiler/ncgutil.pas
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@ -864,12 +864,11 @@ implementation
end;
var
paraloc : pcgparalocation;
href : treference;
sizeleft : aint;
{$if defined(sparc) or defined(arm) or defined(mips)}
tempref : treference;
{$endif defined(sparc) or defined(arm) or defined(mips)}
paraloc : pcgparalocation;
href : treference;
sizeleft : aint;
alignment : longint;
tempref : treference;
{$ifdef mips}
tmpreg : tregister;
{$endif mips}
@ -1085,7 +1084,38 @@ implementation
end
{$endif defined(cpu8bitalu)}
else
internalerror(200410105);
begin
{ this can happen if a parameter is spread over
multiple paralocs, e.g. if a record with two single
fields must be passed in two single precision
registers }
{ does it fit in the register of destloc? }
sizeleft:=para.intsize;
if sizeleft<>vardef.size then
internalerror(2014122806);
if sizeleft<>tcgsize2size[destloc.size] then
internalerror(200410105);
{ store everything first to memory, then load it in
destloc }
tg.gettemp(list,sizeleft,sizeleft,tt_persistent,tempref);
gen_alloc_regloc(list,destloc);
while sizeleft>0 do
begin
if not assigned(paraloc) then
internalerror(2014122807);
unget_para(paraloc^);
cg.a_load_cgparaloc_ref(list,paraloc^,tempref,sizeleft,newalignment(para.alignment,para.intsize-sizeleft));
if (paraloc^.size=OS_NO) and
assigned(paraloc^.next) then
internalerror(2014122805);
inc(tempref.offset,tcgsize2size[paraloc^.size]);
dec(sizeleft,tcgsize2size[paraloc^.size]);
paraloc:=paraloc^.next;
end;
dec(tempref.offset,para.intsize);
cg.a_load_ref_reg(list,para.size,para.size,tempref,destloc.register);
tg.ungettemp(list,tempref);
end;
end
else
begin