[PATCH][AArch64] Use @ pattern to eliminate switch statement in one more place

[Kyrylo Tkachov]

Hi all,

We can use the new '@' modifier to MD patterns to generate mode-parametrised gen_ functions
for the despeculate_copy patterns and therefore remove the switch on modes in aarch64.c
that is used to pick the right generator. This simplifies the code.

Bootstrapped and tested on aarch64-none-linux-gnu.

Ok for trunk?

Thanks,
Kyrill

2018-10-16  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

     * config/aarch64/aarch64.md (despeculate_copy<ALLI_TI:mode>):
     Rename to...
     (@despeculate_copy<ALLI_TI:mode>): ... This.
     * config/aarch64/aarch64.c (aarch64_speculation_safe_value): Remove
     switch statement.
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