[PATCH][2/4][committed] aarch64: Convert UABDL2 and SABDL2 patterns to standard RTL codes

[Kyrylo Tkachov via Gcc-patches]

Hi all,

Similar to the previous patch for UABDL and SABDL, this patch covers the *2 
versions that vec_select the high half
of its input to do the asbsdiff and extend. A define_expand is added for the 
intrinsic to create the "select-high-half" RTX the pattern expects.

Bootstrapped and tested on aarch64-none-linux-gnu.
Pushing to trunk.
Thanks,
Kyrill

gcc/ChangeLog:

        * config/aarch64/aarch64-simd.md (aarch64_<sur>abdl2<mode>): Rename 
to...
        (aarch64_<su>abdl2<mode>_insn): ... This.  Use RTL codes instead of 
unspec.
        (aarch64_<su>abdl2<mode>): New define_expand.
        * config/aarch64/aarch64.md (UNSPEC_SABDL2, UNSPEC_UABDL2): Delete.
        * config/aarch64/iterators.md (ABDL2): Delete.
        (sur): Remove handling of UNSPEC_SABDL2 and UNSPEC_UABDL2.

abdl2.patch
Description: abdl2.patch