Richard Sandiford 199cfcc475 aarch64: Add a aarch64_cpu_supports_inst_p helper
Quite a lot of SME2 instructions have an opcode bit that selects
between 32-bit and 64-bit forms of an instruction, with the 32-bit
forms being part of base SME2 and with the 64-bit forms being part
of an optional extension.  It's nevertheless useful to have a single
opcode entry for both forms since (a) that matches the ISA definition
and (b) it tends to improve error reporting.

This patch therefore adds a libopcodes function called
aarch64_cpu_supports_inst_p that tests whether the target
supports a particular instruction.  In future it will depend
on internal libopcodes routines.
2023-03-30 11:09:09 +01:00
2023-03-16 17:30:19 +10:30

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