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Instead of doing a linear search through the insn_table for each
instruction, use the opcode as direct index into the table. This will
give constant time lookup performance as the number of supported
opcodes increases. Make the tables const as they are only ever read.
For uasm-mips.c sort the table alphabetically, and remove duplicate
entries, uasm-micromips.c was already sorted and duplicate free.
There is a small savings in object size as struct insn loses a field:
$ size arch/mips/mm/uasm-mips.o arch/mips/mm/uasm-mips.o.save
text data bss dec hex filename
10040 0 0 10040 2738 arch/mips/mm/uasm-mips.o
9240 1120 0 10360 2878 arch/mips/mm/uasm-mips.o.save
Signed-off-by: David Daney <david.daney@cavium.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Matt Redfearn <matt.redfearn@imgtec.com>
Cc: netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16365/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
ce807d5f67