Exemple #1
0
/// HasOneImplicitDefWithKnownVT - If the instruction has at least one
/// implicit def and it has a known VT, return the VT, otherwise return
/// MVT::Other.
MVT::SimpleValueType CodeGenInstruction::
HasOneImplicitDefWithKnownVT(const CodeGenTarget &TargetInfo) const {
    if (ImplicitDefs.empty()) return MVT::Other;

    // Check to see if the first implicit def has a resolvable type.
    Record *FirstImplicitDef = ImplicitDefs[0];
    assert(FirstImplicitDef->isSubClassOf("Register"));
    const std::vector<MVT::SimpleValueType> &RegVTs =
        TargetInfo.getRegisterVTs(FirstImplicitDef);
    if (RegVTs.size() == 1)
        return RegVTs[0];
    return MVT::Other;
}