[PATCH 1/4] opcodes: use CGEN_INSN_LGUINT for base instructions

[Jose E. Marchesi]

Hi Nick.

> Hi Jose,
>
>> This patch changes the opcodes CGEN support code in order to allow
>> base instructions with opcodes past the least significative 32 bits.
>> Note that the masks have been adapted in a previous patch.
>> This patch has been regtested for all the current targets in
>> binutils
>> that are based on CGEN, namely:
>> - bpf-unknown-none
>> - lm32-elf
>> - fr30-elf
>> - ip2k-elf
>> - iq2000-elf
>> - m32c-elf
>> - m32r-elf
>> - mep-elf
>> - mt-elf
>> - or1k-elf
>> - stormy16-elf"
>> Also with --enable-cgen-maint and --enable-targets=all.
>> No regressions observed.
>
> Patch approved - please apply.

Thanks.

Before pushing I am looking at the CGEN_INSN_BYTES point raised by Jan,
which made me realize that, even when I am pretty sure the path
introduces no regressions, it may be incomplete because it won't cover
targets that would have opcodes past the lowest 32-bits of the base
instruction and that also define CGEN_INT_INSN_P (even if we currently
don't have such targets.)