aarch64: Use operand class to select movprfx error

Previously the choice of error message for an invalid movprfx sequence
used the architecture requirements to determine whether an instruction
was an SVE instruction or not.  This meant specifying SVE or SVE2 as an
explicit architecture requirement for all SVE instructions, even when
this was already implied by another feature.  As more architecture
features are added and with the partial removal of the SME->SVE2
dependency, these extra feature requirements were getting messier and
easier to forget.

Instead, we now look at the operand types.  If there is an SVE_REG,
SVE_REGLIST or PRED_REG operand, then we treat the instruction as an SVE
instruction.  This does change behaviour slightly, but it only affects
the choice of error message and the new choice should be a bit more
consistent.

There is one testsuite update required, because Ezra's SVE_AES2 patch
temporarily broke classification of FEAT_SVE_AES instructions.  This
patch restores the original behaviour.

0 files changed, 0 insertions, 0 deletions