[Bug target/67322] [Aarch64] Exploit Wide Add operations when appropriate

[michael.collison at linaro dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67322

--- Comment #1 from Michael Collison <michael.collison at linaro dot org> ---
Fixed via:
URL: https://gcc.gnu.org/viewcvs/gcc?view=revision&revision=230853

r230853 | collison | 2015-11-24 23:51:55 -0700 (Tue, 24 Nov 2015) | 15 lines

2015-11-24  Michael Collison  <michael.collison@linaro.org>

        * config/aarch64/aarch64-simd.md (widen_ssum, widen_usum)
        (aarch64_<ANY_EXTEND:su><ADDSUB:optab>w<mode>_internal): New patterns
        * config/aarch64/iterators.md (Vhalf, VDBLW): New mode attributes.
        * gcc.target/aarch64/saddw-1.c: New test.
        * gcc.target/aarch64/saddw-2.c: New test.
        * gcc.target/aarch64/uaddw-1.c: New test.
        * gcc.target/aarch64/uaddw-2.c: New test.
        * gcc.target/aarch64/uaddw-3.c: New test.
        * lib/target-support.exp
        (check_effective_target_vect_widen_sum_hi_to_si_pattern):
        Add aarch64 to list of support targets.