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updates for ZAM optimization

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Vern Paxson 2022-03-11 16:12:34 -08:00 • committed by Tim Wojtulewicz
parent 1f27edf756
commit 16a16948a1
8 changed files with 143 additions and 39 deletions
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10
src/script_opt/ZAM/AM-Opt.cc
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@ -670,7 +670,15 @@ void ZAMCompiler::ReMapVar(const ID* id, int slot, bro_uint_t inst)
// powerful allocation method like graph coloring. However, far and
// away the bulk of our variables are short-lived temporaries,
// for which greedy should work fine.
bool is_managed = ZVal::IsManagedType(id->GetType());
//
// Note, we also need to make sure that denizens sharing a slot
// are all consistently either managed, or non-managed, types.
// One subtlety in this regard is that identifiers that are types
// should always be deemed "managed", even if the type they refer
// to is not managed, because what matters for uses of those
// identifiers is interpreting them as "any" values having an
// internal type of TYPE_TYPE.
bool is_managed = ZVal::IsManagedType(id->GetType()) || id->IsType();
int apt_slot = -1;
for ( unsigned int i = 0; i < shared_frame_denizens.size(); ++i )