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strong update for translating phi #1263

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merged 2 commits into from
Nov 29, 2023
Merged

strong update for translating phi #1263

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c6749de
strong update for translating phi
jumormt Nov 29, 2023
37debb6
unified writing for phi and load, add some comments
jumormt Nov 29, 2023
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81 changes: 37 additions & 44 deletions svf/lib/AbstractExecution/SVFIR2ItvExeState.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -759,41 +759,34 @@ void SVFIR2ItvExeState::translateLoad(const LoadStmt *load)
{
VAddrs &addrs = getVAddrs(rhs);
assert(!addrs.empty());
for (const auto &addr: addrs)
{
u32_t objId = getInternalID(addr);
if (inLocToIValTable(objId))
_es[lhs] = IntervalValue::bottom();
else if (inLocToAddrsTable(objId))
_es.getVAddrs(lhs).setBottom();
break;
}
IntervalValue rhsItv = IntervalValue::bottom();
AddressValue rhsAddr;
bool isItv = false, isAddr = false;
for (const auto &addr: addrs)
{
u32_t objId = getInternalID(addr);
if (inLocToIValTable(objId))
{
if (!inVarToIValTable(lhs))
{
_es[lhs] = _es.load(addr);
}
else
{
_es[lhs].join_with(_es.load(addr));
}
rhsItv.join_with(_es.load(addr));
isItv = true;
}
else if (inLocToAddrsTable(objId))
{
if (!inVarToAddrsTable(lhs))
{
_es.getVAddrs(lhs) = _es.loadVAddrs(addr);
}
else
{
_es.getVAddrs(lhs).join_with(_es.loadVAddrs(addr));
}
rhsAddr.join_with(_es.loadVAddrs(addr));
isAddr = true;
} else {
// rhs not in table
}
}
if (isItv) {
// lhs var is an integer
_es[lhs] = rhsItv;
} else if (isAddr) {
// lhs var is an address
_es.getVAddrs(lhs) = rhsAddr;
} else {
// rhs not in table
}
}
}

Expand Down Expand Up @@ -911,34 +904,34 @@ void SVFIR2ItvExeState::translateSelect(const SelectStmt *select)
void SVFIR2ItvExeState::translatePhi(const PhiStmt *phi)
{
u32_t res = phi->getResID();
IntervalValue rhsItv = IntervalValue::bottom();
AddressValue rhsAddr;
bool isItv = false, isAddr = false;
for (u32_t i = 0; i < phi->getOpVarNum(); i++)
{
NodeID curId = phi->getOpVarID(i);
if (inVarToIValTable(curId))
{
const IntervalValue &cur = _es[curId];
if (!inVarToIValTable(res))
{
_es[res] = cur;
}
else
{
_es[res].join_with(cur);
}
rhsItv.join_with(_es[curId]);
isItv = true;
}
else if (inVarToAddrsTable(curId))
{
assert(!getVAddrs(curId).empty());
const VAddrs &cur = getVAddrs(curId);
if (!inVarToAddrsTable(res))
{
_es.getVAddrs(res) = cur;
}
else
{
_es.getVAddrs(res).join_with(cur);
}
}
rhsAddr.join_with(getVAddrs(curId));
isAddr = true;
} else {
// rhs not in the table
}
}
if (isItv) {
// res var is an integer
_es[res] = rhsItv;
} else if (isAddr) {
// res var is an address
_es.getVAddrs(res) = rhsAddr;
} else {
// rhs not in table
}
}

Expand Down
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