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* make sure live_start/end is never a tai_regalloc, as those can be

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removed by the register allocator and thus become invalid. This fixed
    make cycle with -Or for ppc, but I'm not sure what the warning on
    symsym.pas:1663 means. Since the tlocation change, even regular make
    cycle doesn't work anymore though...
This commit is contained in:
Jonas Maebe 2004-10-31 23:18:29 +00:00
parent 4df316465e
commit dc71fc8290
1 changed files with 18 additions and 1 deletions
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19
compiler/rgobj.pas
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@ -1402,6 +1402,16 @@ unit rgobj;
r:=newreg(regtype,u,subreg); r:=newreg(regtype,u,subreg);
if assigned(live_start) then if assigned(live_start) then
begin begin
{ these can be removed by the register allocator and thus }
{ live_start/end can become invalid in this case! (JM) }
while live_start.typ = ait_regalloc do
begin
if (live_end = live_start) then
live_end := tai(live_end.next);
live_start := tai(live_start.next);
end;
if not assigned(live_start) then
internalerror(2004103110);
list.insertbefore(Tai_regalloc.alloc(r,live_start),live_start); list.insertbefore(Tai_regalloc.alloc(r,live_start),live_start);
{ Insert live end deallocation before reg allocations { Insert live end deallocation before reg allocations
to reduce conflicts } to reduce conflicts }
@ -1993,7 +2003,14 @@ unit rgobj;
end. end.
{ {
$Log$ $Log$
Revision 1.147 2004-10-31 21:45:03 peter Revision 1.148 2004-10-31 23:18:29 jonas
* make sure live_start/end is never a tai_regalloc, as those can be
removed by the register allocator and thus become invalid. This fixed
make cycle with -Or for ppc, but I'm not sure what the warning on
symsym.pas:1663 means. Since the tlocation change, even regular make
cycle doesn't work anymore though...
Revision 1.147 2004/10/31 21:45:03 peter
* generic tlocation * generic tlocation
* move tlocation to cgutils * move tlocation to cgutils