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6dcfd73d21
o make use of the fact that callparanodes always first load everything
in temporary parameters (allocated via paramanager.createtempparaloc)
-> we pass those temporary paralocs to the llvm call nodes and ignore
the "real" locations with physical registers
o all function results are forced to memory before handing them back
to the generic code generator to avoid having to deal with special
result locations and llvm<->pascal type differences (llvm removes
the extra temp stores/loads while optimising)
o ideally, the llvm code generator should share the common code with
the generic code generator for a_load_ref_cgpara() at some point in
the future
git-svn-id: branches/hlcgllvm@27013 -
71 lines
1.9 KiB
ObjectPascal
71 lines
1.9 KiB
ObjectPascal
{
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Copyright (c) 2014 by Jonas Maebe
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Generate LLVM bytecode for call nodes
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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****************************************************************************
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}
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unit nllvmcal;
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{$mode objfpc}
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interface
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uses
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ncgcal;
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type
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tllvmcallnode = class(tcgcallnode)
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protected
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procedure pushparas; override;
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end;
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implementation
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uses
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verbose,
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ncal;
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{ tllvmcallnode }
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procedure tllvmcallnode.pushparas;
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var
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n: tcgcallparanode;
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paraindex: longint;
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begin
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{ we just pass the temp paralocs here }
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setlength(paralocs,procdefinition.paras.count);
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n:=tcgcallparanode(left);
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while assigned(n) do
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begin
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{ TODO: check whether this is correct for left-to-right calling
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conventions, may also depend on whether or not llvm knows about
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the calling convention }
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paraindex:=procdefinition.paras.indexof(n.parasym);
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if paraindex=-1 then
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internalerror(2014010602);
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paralocs[paraindex]:=@n.tempcgpara;
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n:=tcgcallparanode(n.right);
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end;
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end;
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begin
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ccallnode:=tllvmcallnode;
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end.
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