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* fix spilling code when explicit cpu registers are used in an

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instruction
This commit is contained in:
peter 2005-03-20 19:47:46 +00:00
parent 46503e17e2
commit 5452cccaad
1 changed files with 14 additions and 4 deletions
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18
compiler/rgobj.pas
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@ -1902,13 +1902,19 @@ unit rgobj;
result := true;
oldlive_registers.copyfrom(live_registers);
{ Process all tai_regallocs belonging to this instruction. All
released registers are also added to the live_registers because
{ Process all tai_regallocs belonging to this instruction, ignore explicit
inserted regallocs. These can happend for example in i386:
mov ref,ireg26
<regdealloc ireg26, instr=taicpu of lea>
<regalloc edi, insrt=nil>
lea [ireg26+ireg17],edi
All released registers are also added to the live_registers because
they can't be used during the spilling }
loadpos:=tai(instr.previous);
while assigned(loadpos) and
(loadpos.typ=ait_regalloc) and
(tai_regalloc(loadpos).instr=instr) do
((tai_regalloc(loadpos).instr=nil) or
(tai_regalloc(loadpos).instr=instr)) do
begin
if tai_regalloc(loadpos).ratype=ra_dealloc then
live_registers.add(getsupreg(tai_regalloc(loadpos).reg));
@ -2006,7 +2012,11 @@ unit rgobj;
end.
{
$Log$
Revision 1.154 2005-02-18 23:37:51 jonas
Revision 1.155 2005-03-20 19:47:46 peter
* fix spilling code when explicit cpu registers are used in an
instruction
Revision 1.154 2005/02/18 23:37:51 jonas
* fixed spilling for several ppc instructions which only read registers
+ added support for registers in references that get changed (load/store
with update)