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It makes no sense for insn operand predicates, as long as they accept a register operand, to be more restrictive than the set of the associated constraints, because expand will choose the insn based on the relevant operand being a pseudo register then and reload keep it happily as a memory reference if a constraint permits it. So the restriction posed by such a predicate will be happily ignored, and moreover if a splitter is added, such as required for MODE_CC support, the new instructions will reject the original operands supplied, causing an ICE. An actual example will be given with a subsequent change. Therefore, similarly to EXTV/EXTZV/INSV insns, remove inconsistencies with predicates and constraints of bit-field comparison insns, observing that a bit-field located in memory is byte-addressed by the respective machine instructions and therefore SImode may only be used with a register or an offsettable memory operand (i.e. not an indexed, pre-decremented, or post-incremented one). Also give the insns names, for easier reference here and elsewhere. gcc/ * config/vax/vax.md (*cmpv_2): Name insn. (*cmpv, *cmpzv, *cmpzv_2): Likewise. Fix location predicate and constraint.
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