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Re: [PATCH 0/3] S/390: Shift count improvements.


On 06.07.19 22:53, Robin Dapp wrote:
> Hi,
> 
> these patches introduce a new predicate that recognizes
> shift-count operands instead of the subst patterns we
> used before.  This allows introducing (no-op) subregs in
> the patterns which was not possible via subst before
> (see https://gcc.gnu.org/ml/gcc-patches/2019-05/msg00853.html).
> The second patch adds some tests.
> 
> The third patch defines the shift_truncation_mask and adds
> a test for it.
> 
> Bootstrapped and regtested.
> 
> Regards
>  Robin
> 
> ---
> 
> Robin Dapp (3):
>   S/390: Rework shift count handling.
>   S/390: Shift count tests.
>   S/390: Define shift_truncation_mask.

Ok. Thanks!

Andreas

> 
>  gcc/config/s390/constraints.md                 |  12 ++
>  gcc/config/s390/predicates.md                  |  29 +++++
>  gcc/config/s390/s390-protos.h                  |   1 +
>  gcc/config/s390/s390.c                         |  59 +++++++++-
>  gcc/config/s390/s390.md                        |  43 +++----
>  gcc/config/s390/subst.md                       |  72 ------------
>  gcc/config/s390/vector.md                      |  14 ++-
>  .../gcc.target/s390/combine-rotate-modulo.c    |  36 ++++++
>  .../s390/combine-shift-rotate-add-mod.c        |  29 +++++
>  .../gcc.target/s390/vector/combine-shift-vec.c | 107 ++++++++++++++++++
>  .../gcc.target/s390/rotate-truncation-mask.c   |  11 ++
>  11 files changed, 314 insertions(+), 99 deletions(-)
>  create mode 100644 gcc/testsuite/gcc.target/s390/combine-rotate-modulo.c
>  create mode 100644 gcc/testsuite/gcc.target/s390/combine-shift-rotate-add-mod.c
>  create mode 100644 gcc/testsuite/gcc.target/s390/vector/combine-shift-vec.c
>  create mode 100644 gcc/testsuite/gcc.target/s390/rotate-truncation-mask.c
> 


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