MIRType BaselineInspector::expectedPropertyAccessInputType(jsbytecode* pc) {
if (!hasICScript()) {
return MIRType::Value;
}
const ICEntry& entry = icEntryFromPC(pc);
MIRType type = MIRType::None;
for (ICStub* stub = entry.firstStub(); stub; stub = stub->next()) {
MIRType stubType = MIRType::None;
if (stub->isCacheIR_Monitored()) {
stubType = GetCacheIRExpectedInputType(stub->toCacheIR_Monitored());
if (stubType == MIRType::Value) {
return MIRType::Value;
}
} else if (stub->isGetElem_Fallback() || stub->isGetProp_Fallback()) {
// If we have an unoptimizable access, don't try to optimize.
if (stub->toFallbackStub()->state().hasFailures()) {
return MIRType::Value;
}
} else {
MOZ_CRASH("Unexpected stub");
}
if (type != MIRType::None) {
if (type != stubType) {
return MIRType::Value;
}
} else {
type = stubType;
}
}
return (type == MIRType::None) ? MIRType::Value : type;
}
bool
BaselineInspector::hasSeenNegativeIndexGetElement(jsbytecode *pc)
{
if (!hasBaselineScript())
return false;
const ICEntry &entry = icEntryFromPC(pc);
ICStub *stub = entry.fallbackStub();
if (stub->isGetElem_Fallback())
return stub->toGetElem_Fallback()->hasNegativeIndex();
return false;
}
