[PATCH][committed] aarch64: Factorise widening add/sub high-half expanders with iterators

[Kyrylo Tkachov via Gcc-patches]

Hi all,

I noticed these define_expand are almost identical modulo some string 
substitutions.
This patch compresses them together with a couple of code iterators.
No functional change intended.
Bootstrapped and tested on aarch64-none-linux-gnu.

Pushing to trunk.
Thanks,
Kyrill

gcc/ChangeLog:

        * config/aarch64/aarch64-simd.md (aarch64_saddw2<mode>): Delete.
        (aarch64_uaddw2<mode>): Delete.
        (aarch64_ssubw2<mode>): Delete.
        (aarch64_usubw2<mode>): Delete.
        (aarch64_<ANY_EXTEND:su><ADDSUB:optab>w2<mode>): New define_expand.

factor.patch
Description: factor.patch