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This is a first try to implement at least some of the requirements regarding the vector bool type documented for IBM XLC. With this patch error messages will be issued for invalid uses of vector bool types in binary operators. vector bool types are being marked opaque in order to prevent the front-end from complaining about "vector bool long" vs "vector bool long long" combinations on 64 bit. The opaque flag basically suppresses any type checking. However, we still want vector bool to be accepted only in contexts specified in the documentation (to be published soon). Implementing the invalid binary op hook does this for binary operators at least. But this is far from being complete :( gcc/ * config/s390/s390.c (s390_vector_bool_type_p): New function. (s390_invalid_binary_op): New function. (TARGET_INVALID_BINARY_OP): Define macro. From-SVN: r223404
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