On 11/22/2017 11:12 AM, Richard Sandiford wrote:
> Richard Sandiford <richard.sandif...@linaro.org> writes:
>> This patch adds support for the SVE bitwise reduction instructions
>> (ANDV, ORV and EORV). It's a fairly mechanical extension of existing
>> REDUC_* operators.
>>
>> Tested on aarch64-linux-gnu (with and without SVE), x86_64-linux-gnu
>> and powerpc64le-linux-gnu.
>
> Here's an updated version that applies on top of the recent
> removal of REDUC_*_EXPR. Tested as before.
>
> Thanks,
> Richard
>
>
> 2017-11-22 Richard Sandiford <richard.sandif...@linaro.org>
> Alan Hayward <alan.hayw...@arm.com>
> David Sherwood <david.sherw...@arm.com>
>
> gcc/
> * optabs.def (reduc_and_scal_optab, reduc_ior_scal_optab)
> (reduc_xor_scal_optab): New optabs.
> * doc/md.texi (reduc_and_scal_@var{m}, reduc_ior_scal_@var{m})
> (reduc_xor_scal_@var{m}): Document.
> * doc/sourcebuild.texi (vect_logical_reduc): Likewise.
> * internal-fn.def (IFN_REDUC_AND, IFN_REDUC_IOR, IFN_REDUC_XOR): New
> internal functions.
> * fold-const-call.c (fold_const_call): Handle them.
> * tree-vect-loop.c (reduction_fn_for_scalar_code): Return the new
> internal functions for BIT_AND_EXPR, BIT_IOR_EXPR and BIT_XOR_EXPR.
> * config/aarch64/aarch64-sve.md (reduc_<bit_reduc>_scal_<mode>):
> (*reduc_<bit_reduc>_scal_<mode>): New patterns.
> * config/aarch64/iterators.md (UNSPEC_ANDV, UNSPEC_ORV)
> (UNSPEC_XORV): New unspecs.
> (optab): Add entries for them.
> (BITWISEV): New int iterator.
> (bit_reduc_op): New int attributes.
>
> gcc/testsuite/
> * lib/target-supports.exp (check_effective_target_vect_logical_reduc):
> New proc.
> * gcc.dg/vect/vect-reduc-or_1.c: Also run for vect_logical_reduc
> and add an associated scan-dump test. Prevent vectorization
> of the first two loops.
> * gcc.dg/vect/vect-reduc-or_2.c: Likewise.
> * gcc.target/aarch64/sve_reduc_1.c: Add AND, IOR and XOR reductions.
> * gcc.target/aarch64/sve_reduc_2.c: Likewise.
> * gcc.target/aarch64/sve_reduc_1_run.c: Likewise.
> (INIT_VECTOR): Tweak initial value so that some bits are always set.
> * gcc.target/aarch64/sve_reduc_2_run.c: Likewise.
OK.
Jeff
