vector<Value*> AssertionSiteInstrumenter::CollectArgs(
Instruction *Before, const Automaton& A,
Module& Mod, IRBuilder<>& Builder) {
// Find named values to be passed to instrumentation.
std::map<string,Value*> ValuesInScope;
for (auto G = Mod.global_begin(); G != Mod.global_end(); G++)
ValuesInScope[G->getName()] = G;
auto *Fn = Before->getParent()->getParent();
for (auto& Arg : Fn->getArgumentList())
ValuesInScope[Arg.getName()] = &Arg;
auto& EntryBlock(*Fn->begin());
for (auto& I : EntryBlock) {
auto *Inst = dyn_cast<AllocaInst>(&I);
if (!Inst)
break;
ValuesInScope[Inst->getName()] = Builder.CreateLoad(Inst);
}
int ArgSize = 0;
for (auto& Arg : A.getAssertion().argument())
if (!Arg.free())
ArgSize = std::max(ArgSize + 1, Arg.index());
vector<Value*> Args(ArgSize, NULL);
for (auto& Arg : A.getAssertion().argument()) {
if (Arg.free())
continue;
string Name(BaseName(Arg));
if (ValuesInScope.find(Name) == ValuesInScope.end()) {
string s;
raw_string_ostream Out(s);
for (auto v : ValuesInScope) {
Out << " \"" << v.first << "\": ";
v.second->getType()->print(Out);
Out << "\n";
}
panic("assertion references non-existent variable '" + BaseName(Arg)
+ "'; was it defined under '#ifdef TESLA'?\n\n"
"Variables in scope are:\n" + Out.str());
}
Args[Arg.index()] =
GetArgumentValue(ValuesInScope[Name], Arg, Builder, true);
}
return Args;
}
void EventTranslator::CallUpdateState(const Automaton& A, uint32_t Symbol) {
std::vector<Value*> Args;
Args.push_back(InstrCtx.TeslaContext(A.getAssertion().context()));
Args.push_back(InstrCtx.ExternalDescription(A));
Args.push_back(ConstantInt::get(InstrCtx.Int32Ty, Symbol));
Args.push_back(Key);
Builder.CreateCall(InstrCtx.UpdateStateFn(), Args);
}