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Speed up syntactic_implication() for constants.

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* src/ltlvisit/syntimpl.cc (syntactic_implication): Do not
create visitors if arguments are constant.
This commit is contained in:
Alexandre Duret-Lutz 2010-04-15 12:27:31 +02:00
parent 7021e45f70
commit 946f305f7c
2 changed files with 10 additions and 3 deletions
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6
src/ltlvisit/syntimpl.cc
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@ -616,13 +616,13 @@ namespace spot
{
if (f1 == f2)
return true;
inf_left_recurse_visitor v1(f2);
inf_right_recurse_visitor v2(f1);
if (f2 == constant::true_instance()
|| f1 == constant::false_instance())
return true;
inf_left_recurse_visitor v1(f2);
inf_right_recurse_visitor v2(f1);
const_cast<formula*>(f1)->accept(v1);
if (v1.result())
return true;