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* do not use a_call_ref for procedures allocating all registers since it break spilling, see also issue #28639, resolves issue #28639

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git-svn-id: trunk@31608 -
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florian 2015-09-11 20:56:05 +00:00
parent 8096ad3d1b
commit fbda104d54
1 changed files with 4 additions and 2 deletions
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6
compiler/x86/nx86cal.pas
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@ -48,7 +48,7 @@ interface
implementation implementation
uses uses
cgobj, globtype,cgobj,
cgbase,cpubase,cgx86,cga,aasmdata,aasmcpu, cgbase,cpubase,cgx86,cga,aasmdata,aasmcpu,
hlcgobj; hlcgobj;
@ -88,7 +88,9 @@ implementation
function tx86callnode.can_call_ref(var ref: treference): boolean; function tx86callnode.can_call_ref(var ref: treference): boolean;
begin begin
tcgx86(cg).make_simple_ref(current_asmdata.CurrAsmList,ref); tcgx86(cg).make_simple_ref(current_asmdata.CurrAsmList,ref);
result:=true; { do not use a ref. for calling conventions which allocate all registers, the reg. allocator cannot handle this, see
also issue #28639, I were not able to create a simple example though to cause the resulting endless spilling }
result:=not(procdefinition.proccalloption in [pocall_far16,pocall_pascal,pocall_oldfpccall]);
end; end;