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+ use 'push cs + call near' (which is both shorter and faster), instead of far

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call, when calling a far proc in the same segment

git-svn-id: trunk@27621 -
This commit is contained in:
nickysn 2014-04-21 00:44:45 +00:00
parent d7c5b4502f
commit 70a7ecd0fa
1 changed files with 13 additions and 2 deletions
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15
compiler/i8086/hlcgcpu.pas
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@ -88,7 +88,7 @@ implementation
cpubase,cpuinfo,tgobj,cgobj,cgcpu,
defutil,
symconst,symcpu,
procinfo,
procinfo,fmodule,
aasmcpu;
{ thlcgcpu }
@ -261,7 +261,18 @@ implementation
function thlcgcpu.a_call_name(list: TAsmList; pd: tprocdef; const s: TSymStr; forceresdef: tdef; weak: boolean): tcgpara;
begin
if is_proc_far(pd) then
tcg8086(cg).a_call_name_far(list,s,weak)
begin
{ far calls to the same module (in $HUGECODE off mode) can be optimized
to push cs + call near, because they are in the same segment }
if not (cs_huge_code in current_settings.moduleswitches) and
(pd.procsym.owner=current_module.localsymtable) then
begin
list.concat(Taicpu.Op_reg(A_PUSH,S_W,NR_CS));
tcg8086(cg).a_call_name_near(list,s,weak);
end
else
tcg8086(cg).a_call_name_far(list,s,weak);
end
else
tcg8086(cg).a_call_name_near(list,s,weak);
result:=get_call_result_cgpara(pd,forceresdef);