Richard Sandiford
7da28504bf
In SME, the vector select register had to be in the range w12-w15, so it made sense to enforce that during parsing. However, SME2 adds instructions for which the range is w8-w11 instead. This patch therefore moves the range check from the parsing stage to the constraint-checking stage. Also, the previous error used a capitalised range W12-W15, whereas other register range errors used lowercase ranges like p0-p7. A quick internal poll showed a preference for the lowercase form, so the patch uses that. The patch uses "selection register" rather than "vector select register" so that the terminology extends more naturally to PSEL.
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