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* variables where the address is taken could have aliases so they aren't invariant

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git-svn-id: trunk@11806 -
This commit is contained in:
florian 2008-09-18 19:08:57 +00:00
parent 0b5951fa14
commit 17d3da7266
1 changed files with 4 additions and 1 deletions
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5
compiler/optloop.pas
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@ -200,7 +200,10 @@ unit optloop;
if (pi_dfaavailable in current_procinfo.flags) and
assigned(loop.optinfo) and
assigned(expr.optinfo) then
result:=not(DFASetIn(loop.optinfo^.defsum,expr.optinfo^.index));
{ no aliasing? }
result:=not(tabstractvarsym(tloadnode(expr).symtableentry).addr_taken) and
{ no definition in the loop? }
not(DFASetIn(loop.optinfo^.defsum,expr.optinfo^.index));
end;
end;
end;