* intrinsics.scm: Updates to support IVC2.
(belongs-to-group?): Check IVC2 slots.
(-slots-attribute): New.
(targets::attributes): Add SLOTS.
(target:add-well-known-intrinsics): Add CPMOV.
(md-insn): Add CPTYPE and CRET?.
(add-md-insn): Likewise.
(add-intrinsic-for-isa): Disable the duplicate tests, as IVC2 has
duplicate insns with different bit patterns.
(write-cgen-insn?): Add cret? support.
(intrinsics.h): Add vector types.
(runtime-op): Add vector support.
(intrinsic-protos.h): Let GCC define its types. Add cret? support.
* cpu/mep-core.cpu: Add CPTYPE and CRET attributes.
* cpu/mep-ivc2.cpu: Update all insns to include type information.
(h-cr-ivc2): Default to typeless.
(h-ccr-ivc2): Fix register width.
(SLOTS): Fix values and default.
(ivc2_*): Add control register names.
(crop, crqp, crpp, croc, crqc, crpc): Default to typeless.