Applied to master. Thanks!
--Philipp.
On Fri, 29 Sept 2023 at 12:34, Richard Sandiford
<richard.sandif...@arm.com> wrote:
>
> Manos Anagnostakis <manos.anagnosta...@vrull.eu> writes:
> > Improves on: 834fc2bf
> >
> > This improves the code structure of the ldp-stp policies
> > patch introduced in 834fc2bf
> >
> > Bootstrapped and regtested on aarch64-linux.
> >
> > gcc/ChangeLog:
> > * config/aarch64/aarch64-opts.h (enum aarch64_ldp_policy): Removed.
> > (enum aarch64_ldp_stp_policy): Merged enums aarch64_ldp_policy
> > and aarch64_stp_policy to aarch64_ldp_stp_policy.
> > (enum aarch64_stp_policy): Removed.
> > * config/aarch64/aarch64-protos.h (struct tune_params): Removed
> > aarch64_ldp_policy_model and aarch64_stp_policy_model enum types
> > and left only the definitions to the aarch64-opts one.
> > * config/aarch64/aarch64.cc (aarch64_parse_ldp_policy): Removed.
> > (aarch64_parse_stp_policy): Removed.
> > (aarch64_override_options_internal): Removed calls to parsing
> > functions and added obvious direct assignments.
> > (aarch64_mem_ok_with_ldpstp_policy_model): Improved
> > code quality based on the new changes.
> > * config/aarch64/aarch64.opt: Use single enum type
> > aarch64_ldp_stp_policy for both ldp and stp options.
> >
> > gcc/testsuite/ChangeLog:
> > * gcc.target/aarch64/ldp_aligned.c: Splitted into this and
> > ldp_unaligned.
> > * gcc.target/aarch64/stp_aligned.c: Splitted into this and
> > stp_unaligned.
> > * gcc.target/aarch64/ldp_unaligned.c: New test.
> > * gcc.target/aarch64/stp_unaligned.c: New test.
>
> Nice! OK for trunk, thanks.
>
> Sorry again for my mix-up with the original review.
>
> Richard
>
> > Signed-off-by: Manos Anagnostakis <manos.anagnosta...@vrull.eu>
> > ---
> > gcc/config/aarch64/aarch64-opts.h | 26 ++-
> > gcc/config/aarch64/aarch64-protos.h | 25 +--
> > gcc/config/aarch64/aarch64.cc | 160 +++++++-----------
> > gcc/config/aarch64/aarch64.opt | 29 +---
> > .../gcc.target/aarch64/ldp_aligned.c | 28 ---
> > .../gcc.target/aarch64/ldp_unaligned.c | 40 +++++
> > .../gcc.target/aarch64/stp_aligned.c | 25 ---
> > .../gcc.target/aarch64/stp_unaligned.c | 37 ++++
> > 8 files changed, 155 insertions(+), 215 deletions(-)
> > create mode 100644 gcc/testsuite/gcc.target/aarch64/ldp_unaligned.c
> > create mode 100644 gcc/testsuite/gcc.target/aarch64/stp_unaligned.c
> >
> > diff --git a/gcc/config/aarch64/aarch64-opts.h
> > b/gcc/config/aarch64/aarch64-opts.h
> > index db8348507a3..831e28ab52a 100644
> > --- a/gcc/config/aarch64/aarch64-opts.h
> > +++ b/gcc/config/aarch64/aarch64-opts.h
> > @@ -108,20 +108,18 @@ enum aarch64_key_type {
> > AARCH64_KEY_B
> > };
> >
> > -/* Load pair policy type. */
> > -enum aarch64_ldp_policy {
> > - LDP_POLICY_DEFAULT,
> > - LDP_POLICY_ALWAYS,
> > - LDP_POLICY_NEVER,
> > - LDP_POLICY_ALIGNED
> > -};
> > -
> > -/* Store pair policy type. */
> > -enum aarch64_stp_policy {
> > - STP_POLICY_DEFAULT,
> > - STP_POLICY_ALWAYS,
> > - STP_POLICY_NEVER,
> > - STP_POLICY_ALIGNED
> > +/* An enum specifying how to handle load and store pairs using
> > + a fine-grained policy:
> > + - LDP_STP_POLICY_DEFAULT: Use the policy defined in the tuning
> > structure.
> > + - LDP_STP_POLICY_ALIGNED: Emit ldp/stp if the source pointer is aligned
> > + to at least double the alignment of the type.
> > + - LDP_STP_POLICY_ALWAYS: Emit ldp/stp regardless of alignment.
> > + - LDP_STP_POLICY_NEVER: Do not emit ldp/stp. */
> > +enum aarch64_ldp_stp_policy {
> > + AARCH64_LDP_STP_POLICY_DEFAULT,
> > + AARCH64_LDP_STP_POLICY_ALIGNED,
> > + AARCH64_LDP_STP_POLICY_ALWAYS,
> > + AARCH64_LDP_STP_POLICY_NEVER
> > };
> >
> > #endif
> > diff --git a/gcc/config/aarch64/aarch64-protos.h
> > b/gcc/config/aarch64/aarch64-protos.h
> > index 5c6802b4fe8..60a55f4bc19 100644
> > --- a/gcc/config/aarch64/aarch64-protos.h
> > +++ b/gcc/config/aarch64/aarch64-protos.h
> > @@ -568,30 +568,9 @@ struct tune_params
> > /* Place prefetch struct pointer at the end to enable type checking
> > errors when tune_params misses elements (e.g., from erroneous
> > merges). */
> > const struct cpu_prefetch_tune *prefetch;
> > -/* An enum specifying how to handle load pairs using a fine-grained policy:
> > - - LDP_POLICY_ALIGNED: Emit ldp if the source pointer is aligned
> > - to at least double the alignment of the type.
> > - - LDP_POLICY_ALWAYS: Emit ldp regardless of alignment.
> > - - LDP_POLICY_NEVER: Do not emit ldp. */
> >
> > - enum aarch64_ldp_policy_model
> > - {
> > - LDP_POLICY_ALIGNED,
> > - LDP_POLICY_ALWAYS,
> > - LDP_POLICY_NEVER
> > - } ldp_policy_model;
> > -/* An enum specifying how to handle store pairs using a fine-grained
> > policy:
> > - - STP_POLICY_ALIGNED: Emit stp if the source pointer is aligned
> > - to at least double the alignment of the type.
> > - - STP_POLICY_ALWAYS: Emit stp regardless of alignment.
> > - - STP_POLICY_NEVER: Do not emit stp. */
> > -
> > - enum aarch64_stp_policy_model
> > - {
> > - STP_POLICY_ALIGNED,
> > - STP_POLICY_ALWAYS,
> > - STP_POLICY_NEVER
> > - } stp_policy_model;
> > + /* Define models for the aarch64_ldp_stp_policy. */
> > + enum aarch64_ldp_stp_policy ldp_policy_model, stp_policy_model;
> > };
> >
> > /* Classifies an address.
> > diff --git a/gcc/config/aarch64/aarch64.cc b/gcc/config/aarch64/aarch64.cc
> > index aa920fc703a..dcded70c981 100644
> > --- a/gcc/config/aarch64/aarch64.cc
> > +++ b/gcc/config/aarch64/aarch64.cc
> > @@ -1358,8 +1358,8 @@ static const struct tune_params generic_tunings =
> > have at most a very minor effect on SVE2 cores. */
> > (AARCH64_EXTRA_TUNE_CSE_SVE_VL_CONSTANTS), /* tune_flags. */
> > &generic_prefetch_tune,
> > - tune_params::LDP_POLICY_ALWAYS, /* ldp_policy_model. */
> > - tune_params::STP_POLICY_ALWAYS /* stp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALWAYS, /* ldp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALWAYS /* stp_policy_model. */
> > };
> >
> > static const struct tune_params cortexa35_tunings =
> > @@ -1394,8 +1394,8 @@ static const struct tune_params cortexa35_tunings =
> > tune_params::AUTOPREFETCHER_WEAK, /* autoprefetcher_model. */
> > (AARCH64_EXTRA_TUNE_NONE), /* tune_flags. */
> > &generic_prefetch_tune,
> > - tune_params::LDP_POLICY_ALWAYS, /* ldp_policy_model. */
> > - tune_params::STP_POLICY_ALWAYS /* stp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALWAYS, /* ldp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALWAYS /* stp_policy_model. */
> > };
> >
> > static const struct tune_params cortexa53_tunings =
> > @@ -1430,8 +1430,8 @@ static const struct tune_params cortexa53_tunings =
> > tune_params::AUTOPREFETCHER_WEAK, /* autoprefetcher_model. */
> > (AARCH64_EXTRA_TUNE_NONE), /* tune_flags. */
> > &generic_prefetch_tune,
> > - tune_params::LDP_POLICY_ALWAYS, /* ldp_policy_model. */
> > - tune_params::STP_POLICY_ALWAYS /* stp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALWAYS, /* ldp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALWAYS /* stp_policy_model. */
> > };
> >
> > static const struct tune_params cortexa57_tunings =
> > @@ -1466,8 +1466,8 @@ static const struct tune_params cortexa57_tunings =
> > tune_params::AUTOPREFETCHER_WEAK, /* autoprefetcher_model. */
> > (AARCH64_EXTRA_TUNE_RENAME_FMA_REGS), /* tune_flags. */
> > &generic_prefetch_tune,
> > - tune_params::LDP_POLICY_ALWAYS, /* ldp_policy_model. */
> > - tune_params::STP_POLICY_ALWAYS /* stp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALWAYS, /* ldp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALWAYS /* stp_policy_model. */
> > };
> >
> > static const struct tune_params cortexa72_tunings =
> > @@ -1502,8 +1502,8 @@ static const struct tune_params cortexa72_tunings =
> > tune_params::AUTOPREFETCHER_WEAK, /* autoprefetcher_model. */
> > (AARCH64_EXTRA_TUNE_NONE), /* tune_flags. */
> > &generic_prefetch_tune,
> > - tune_params::LDP_POLICY_ALWAYS, /* ldp_policy_model. */
> > - tune_params::STP_POLICY_ALWAYS /* stp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALWAYS, /* ldp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALWAYS /* stp_policy_model. */
> > };
> >
> > static const struct tune_params cortexa73_tunings =
> > @@ -1538,12 +1538,10 @@ static const struct tune_params cortexa73_tunings =
> > tune_params::AUTOPREFETCHER_WEAK, /* autoprefetcher_model. */
> > (AARCH64_EXTRA_TUNE_NONE), /* tune_flags. */
> > &generic_prefetch_tune,
> > - tune_params::LDP_POLICY_ALWAYS, /* ldp_policy_model. */
> > - tune_params::STP_POLICY_ALWAYS /* stp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALWAYS, /* ldp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALWAYS /* stp_policy_model. */
> > };
> >
> > -
> > -
> > static const struct tune_params exynosm1_tunings =
> > {
> > &exynosm1_extra_costs,
> > @@ -1575,8 +1573,8 @@ static const struct tune_params exynosm1_tunings =
> > tune_params::AUTOPREFETCHER_WEAK, /* autoprefetcher_model. */
> > (AARCH64_EXTRA_TUNE_NONE), /* tune_flags. */
> > &exynosm1_prefetch_tune,
> > - tune_params::LDP_POLICY_ALWAYS, /* ldp_policy_model. */
> > - tune_params::STP_POLICY_ALWAYS /* stp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALWAYS, /* ldp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALWAYS /* stp_policy_model. */
> > };
> >
> > static const struct tune_params thunderxt88_tunings =
> > @@ -1610,8 +1608,8 @@ static const struct tune_params thunderxt88_tunings =
> > tune_params::AUTOPREFETCHER_OFF, /* autoprefetcher_model. */
> > (AARCH64_EXTRA_TUNE_NONE), /* tune_flags. */
> > &thunderxt88_prefetch_tune,
> > - tune_params::LDP_POLICY_ALIGNED, /* ldp_policy_model. */
> > - tune_params::STP_POLICY_ALIGNED /* stp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALIGNED, /* ldp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALIGNED /* stp_policy_model. */
> > };
> >
> > static const struct tune_params thunderx_tunings =
> > @@ -1645,8 +1643,8 @@ static const struct tune_params thunderx_tunings =
> > tune_params::AUTOPREFETCHER_OFF, /* autoprefetcher_model. */
> > (AARCH64_EXTRA_TUNE_CHEAP_SHIFT_EXTEND), /* tune_flags. */
> > &thunderx_prefetch_tune,
> > - tune_params::LDP_POLICY_ALIGNED, /* ldp_policy_model. */
> > - tune_params::STP_POLICY_ALIGNED /* stp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALIGNED, /* ldp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALIGNED /* stp_policy_model. */
> > };
> >
> > static const struct tune_params tsv110_tunings =
> > @@ -1681,8 +1679,8 @@ static const struct tune_params tsv110_tunings =
> > tune_params::AUTOPREFETCHER_WEAK, /* autoprefetcher_model. */
> > (AARCH64_EXTRA_TUNE_NONE), /* tune_flags. */
> > &tsv110_prefetch_tune,
> > - tune_params::LDP_POLICY_ALWAYS, /* ldp_policy_model. */
> > - tune_params::STP_POLICY_ALWAYS /* stp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALWAYS, /* ldp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALWAYS /* stp_policy_model. */
> > };
> >
> > static const struct tune_params xgene1_tunings =
> > @@ -1716,8 +1714,8 @@ static const struct tune_params xgene1_tunings =
> > tune_params::AUTOPREFETCHER_OFF, /* autoprefetcher_model. */
> > (AARCH64_EXTRA_TUNE_NO_LDP_STP_QREGS), /* tune_flags. */
> > &xgene1_prefetch_tune,
> > - tune_params::LDP_POLICY_ALWAYS, /* ldp_policy_model. */
> > - tune_params::STP_POLICY_ALWAYS /* stp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALWAYS, /* ldp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALWAYS /* stp_policy_model. */
> > };
> >
> > static const struct tune_params emag_tunings =
> > @@ -1751,8 +1749,8 @@ static const struct tune_params emag_tunings =
> > tune_params::AUTOPREFETCHER_OFF, /* autoprefetcher_model. */
> > (AARCH64_EXTRA_TUNE_NO_LDP_STP_QREGS), /* tune_flags. */
> > &xgene1_prefetch_tune,
> > - tune_params::LDP_POLICY_ALWAYS, /* ldp_policy_model. */
> > - tune_params::STP_POLICY_ALWAYS /* stp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALWAYS, /* ldp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALWAYS /* stp_policy_model. */
> > };
> >
> > static const struct tune_params qdf24xx_tunings =
> > @@ -1787,8 +1785,8 @@ static const struct tune_params qdf24xx_tunings =
> > tune_params::AUTOPREFETCHER_WEAK, /* autoprefetcher_model. */
> > AARCH64_EXTRA_TUNE_RENAME_LOAD_REGS, /* tune_flags. */
> > &qdf24xx_prefetch_tune,
> > - tune_params::LDP_POLICY_ALWAYS, /* ldp_policy_model. */
> > - tune_params::STP_POLICY_ALWAYS /* stp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALWAYS, /* ldp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALWAYS /* stp_policy_model. */
> > };
> >
> > /* Tuning structure for the Qualcomm Saphira core. Default to falkor
> > values
> > @@ -1825,8 +1823,8 @@ static const struct tune_params saphira_tunings =
> > tune_params::AUTOPREFETCHER_WEAK, /* autoprefetcher_model. */
> > (AARCH64_EXTRA_TUNE_NONE), /* tune_flags. */
> > &generic_prefetch_tune,
> > - tune_params::LDP_POLICY_ALWAYS, /* ldp_policy_model. */
> > - tune_params::STP_POLICY_ALWAYS /* stp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALWAYS, /* ldp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALWAYS /* stp_policy_model. */
> > };
> >
> > static const struct tune_params thunderx2t99_tunings =
> > @@ -1861,8 +1859,8 @@ static const struct tune_params thunderx2t99_tunings =
> > tune_params::AUTOPREFETCHER_WEAK, /* autoprefetcher_model. */
> > (AARCH64_EXTRA_TUNE_NONE), /* tune_flags. */
> > &thunderx2t99_prefetch_tune,
> > - tune_params::LDP_POLICY_ALWAYS, /* ldp_policy_model. */
> > - tune_params::STP_POLICY_ALWAYS /* stp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALWAYS, /* ldp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALWAYS /* stp_policy_model. */
> > };
> >
> > static const struct tune_params thunderx3t110_tunings =
> > @@ -1897,8 +1895,8 @@ static const struct tune_params thunderx3t110_tunings
> > =
> > tune_params::AUTOPREFETCHER_WEAK, /* autoprefetcher_model. */
> > (AARCH64_EXTRA_TUNE_NONE), /* tune_flags. */
> > &thunderx3t110_prefetch_tune,
> > - tune_params::LDP_POLICY_ALWAYS, /* ldp_policy_model. */
> > - tune_params::STP_POLICY_ALWAYS /* stp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALWAYS, /* ldp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALWAYS /* stp_policy_model. */
> > };
> >
> > static const struct tune_params neoversen1_tunings =
> > @@ -1932,8 +1930,8 @@ static const struct tune_params neoversen1_tunings =
> > tune_params::AUTOPREFETCHER_WEAK, /* autoprefetcher_model. */
> > (AARCH64_EXTRA_TUNE_CHEAP_SHIFT_EXTEND), /* tune_flags. */
> > &generic_prefetch_tune,
> > - tune_params::LDP_POLICY_ALWAYS, /* ldp_policy_model. */
> > - tune_params::STP_POLICY_ALWAYS /* stp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALWAYS, /* ldp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALWAYS /* stp_policy_model. */
> > };
> >
> > static const struct tune_params ampere1_tunings =
> > @@ -1971,8 +1969,8 @@ static const struct tune_params ampere1_tunings =
> > tune_params::AUTOPREFETCHER_WEAK, /* autoprefetcher_model. */
> > (AARCH64_EXTRA_TUNE_NONE), /* tune_flags. */
> > &ere1_prefetch_tune,
> > - tune_params::LDP_POLICY_ALIGNED, /* ldp_policy_model. */
> > - tune_params::STP_POLICY_ALIGNED /* stp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALIGNED, /* ldp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALIGNED /* stp_policy_model. */
> > };
> >
> > static const struct tune_params ampere1a_tunings =
> > @@ -2011,8 +2009,8 @@ static const struct tune_params ampere1a_tunings =
> > tune_params::AUTOPREFETCHER_WEAK, /* autoprefetcher_model. */
> > (AARCH64_EXTRA_TUNE_NONE), /* tune_flags. */
> > &ere1_prefetch_tune,
> > - tune_params::LDP_POLICY_ALIGNED, /* ldp_policy_model. */
> > - tune_params::STP_POLICY_ALIGNED /* stp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALIGNED, /* ldp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALIGNED /* stp_policy_model. */
> > };
> >
> > static const advsimd_vec_cost neoversev1_advsimd_vector_cost =
> > @@ -2194,8 +2192,8 @@ static const struct tune_params neoversev1_tunings =
> > | AARCH64_EXTRA_TUNE_MATCHED_VECTOR_THROUGHPUT
> > | AARCH64_EXTRA_TUNE_CHEAP_SHIFT_EXTEND), /* tune_flags. */
> > &generic_prefetch_tune,
> > - tune_params::LDP_POLICY_ALWAYS, /* ldp_policy_model. */
> > - tune_params::STP_POLICY_ALWAYS /* stp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALWAYS, /* ldp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALWAYS /* stp_policy_model. */
> > };
> >
> > static const sve_vec_cost neoverse512tvb_sve_vector_cost =
> > @@ -2333,8 +2331,8 @@ static const struct tune_params
> > neoverse512tvb_tunings =
> > | AARCH64_EXTRA_TUNE_USE_NEW_VECTOR_COSTS
> > | AARCH64_EXTRA_TUNE_MATCHED_VECTOR_THROUGHPUT), /* tune_flags. */
> > &generic_prefetch_tune,
> > - tune_params::LDP_POLICY_ALWAYS, /* ldp_policy_model. */
> > - tune_params::STP_POLICY_ALWAYS /* stp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALWAYS, /* ldp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALWAYS /* stp_policy_model. */
> > };
> >
> > static const advsimd_vec_cost neoversen2_advsimd_vector_cost =
> > @@ -2525,8 +2523,8 @@ static const struct tune_params neoversen2_tunings =
> > | AARCH64_EXTRA_TUNE_USE_NEW_VECTOR_COSTS
> > | AARCH64_EXTRA_TUNE_MATCHED_VECTOR_THROUGHPUT), /* tune_flags. */
> > &generic_prefetch_tune,
> > - tune_params::LDP_POLICY_ALWAYS, /* ldp_policy_model. */
> > - tune_params::STP_POLICY_ALWAYS /* stp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALWAYS, /* ldp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALWAYS /* stp_policy_model. */
> > };
> >
> > static const advsimd_vec_cost neoversev2_advsimd_vector_cost =
> > @@ -2717,8 +2715,8 @@ static const struct tune_params neoversev2_tunings =
> > | AARCH64_EXTRA_TUNE_USE_NEW_VECTOR_COSTS
> > | AARCH64_EXTRA_TUNE_MATCHED_VECTOR_THROUGHPUT), /* tune_flags. */
> > &generic_prefetch_tune,
> > - tune_params::LDP_POLICY_ALWAYS, /* ldp_policy_model. */
> > - tune_params::STP_POLICY_ALWAYS /* stp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALWAYS, /* ldp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALWAYS /* stp_policy_model. */
> > };
> >
> > static const struct tune_params a64fx_tunings =
> > @@ -2752,8 +2750,8 @@ static const struct tune_params a64fx_tunings =
> > tune_params::AUTOPREFETCHER_WEAK, /* autoprefetcher_model. */
> > (AARCH64_EXTRA_TUNE_NONE), /* tune_flags. */
> > &a64fx_prefetch_tune,
> > - tune_params::LDP_POLICY_ALWAYS, /* ldp_policy_model. */
> > - tune_params::STP_POLICY_ALWAYS /* stp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALWAYS, /* ldp_policy_model. */
> > + AARCH64_LDP_STP_POLICY_ALWAYS /* stp_policy_model. */
> > };
> >
> > /* Support for fine-grained override of the tuning structures. */
> > @@ -17866,36 +17864,6 @@ aarch64_parse_tune (const char *to_parse, const
> > struct processor **res)
> > return AARCH_PARSE_INVALID_ARG;
> > }
> >
> > -/* Parse a command-line -param=aarch64-ldp-policy= parameter. VALUE is
> > - the value of the parameter. */
> > -
> > -static void
> > -aarch64_parse_ldp_policy (enum aarch64_ldp_policy value,
> > - struct tune_params* tune)
> > -{
> > - if (value == LDP_POLICY_ALWAYS)
> > - tune->ldp_policy_model = tune_params::LDP_POLICY_ALWAYS;
> > - else if (value == LDP_POLICY_NEVER)
> > - tune->ldp_policy_model = tune_params::LDP_POLICY_NEVER;
> > - else if (value == LDP_POLICY_ALIGNED)
> > - tune->ldp_policy_model = tune_params::LDP_POLICY_ALIGNED;
> > -}
> > -
> > -/* Parse a command-line -param=aarch64-stp-policy= parameter. VALUE is
> > - the value of the parameter. */
> > -
> > -static void
> > -aarch64_parse_stp_policy (enum aarch64_stp_policy value,
> > - struct tune_params* tune)
> > -{
> > - if (value == STP_POLICY_ALWAYS)
> > - tune->stp_policy_model = tune_params::STP_POLICY_ALWAYS;
> > - else if (value == STP_POLICY_NEVER)
> > - tune->stp_policy_model = tune_params::STP_POLICY_NEVER;
> > - else if (value == STP_POLICY_ALIGNED)
> > - tune->stp_policy_model = tune_params::STP_POLICY_ALIGNED;
> > -}
> > -
> > /* Parse TOKEN, which has length LENGTH to see if it is an option
> > described in FLAG. If it is, return the index bit for that fusion type.
> > If not, error (printing OPTION_NAME) and return zero. */
> > @@ -18245,12 +18213,10 @@ aarch64_override_options_internal (struct
> > gcc_options *opts)
> > &aarch64_tune_params);
> >
> > if (opts->x_aarch64_ldp_policy_param)
> > - aarch64_parse_ldp_policy (opts->x_aarch64_ldp_policy_param,
> > - &aarch64_tune_params);
> > + aarch64_tune_params.ldp_policy_model =
> > opts->x_aarch64_ldp_policy_param;
> >
> > if (opts->x_aarch64_stp_policy_param)
> > - aarch64_parse_stp_policy (opts->x_aarch64_stp_policy_param,
> > - &aarch64_tune_params);
> > + aarch64_tune_params.stp_policy_model =
> > opts->x_aarch64_stp_policy_param;
> >
> > /* This target defaults to strict volatile bitfields. */
> > if (opts->x_flag_strict_volatile_bitfields < 0 && abi_version_at_least
> > (2))
> > @@ -26551,30 +26517,18 @@ aarch64_mergeable_load_pair_p (machine_mode mode,
> > rtx mem1, rtx mem2)
> > bool
> > aarch64_mem_ok_with_ldpstp_policy_model (rtx mem, bool load, machine_mode
> > mode)
> > {
> > - /* If we have LDP_POLICY_NEVER, reject the load pair. */
> > - if (load
> > - && aarch64_tune_params.ldp_policy_model ==
> > tune_params::LDP_POLICY_NEVER)
> > - return false;
> > + auto policy = (load
> > + ? aarch64_tune_params.ldp_policy_model
> > + : aarch64_tune_params.stp_policy_model);
> >
> > - /* If we have STP_POLICY_NEVER, reject the store pair. */
> > - if (!load
> > - && aarch64_tune_params.stp_policy_model ==
> > tune_params::STP_POLICY_NEVER)
> > + /* If we have AARCH64_LDP_STP_POLICY_NEVER, reject the load pair. */
> > + if (policy == AARCH64_LDP_STP_POLICY_NEVER)
> > return false;
> >
> > - /* If we have LDP_POLICY_ALIGNED,
> > + /* If we have AARCH64_LDP_STP_POLICY_ALIGNED,
> > do not emit the load pair unless the alignment is checked to be
> > at least double the alignment of the type. */
> > - if (load
> > - && aarch64_tune_params.ldp_policy_model ==
> > tune_params::LDP_POLICY_ALIGNED
> > - && !optimize_function_for_size_p (cfun)
> > - && MEM_ALIGN (mem) < 2 * GET_MODE_ALIGNMENT (mode))
> > - return false;
> > -
> > - /* If we have STP_POLICY_ALIGNED,
> > - do not emit the store pair unless the alignment is checked to be
> > - at least double the alignment of the type. */
> > - if (!load
> > - && aarch64_tune_params.stp_policy_model ==
> > tune_params::STP_POLICY_ALIGNED
> > + if (policy == AARCH64_LDP_STP_POLICY_ALIGNED
> > && !optimize_function_for_size_p (cfun)
> > && MEM_ALIGN (mem) < 2 * GET_MODE_ALIGNMENT (mode))
> > return false;
> > diff --git a/gcc/config/aarch64/aarch64.opt b/gcc/config/aarch64/aarch64.opt
> > index 2101c5a23c4..f5a518202a1 100644
> > --- a/gcc/config/aarch64/aarch64.opt
> > +++ b/gcc/config/aarch64/aarch64.opt
> > @@ -339,39 +339,24 @@ Target Joined UInteger Var(aarch64_vect_unroll_limit)
> > Init(4) Param
> > Limit how much the autovectorizer may unroll a loop.
> >
> > -param=aarch64-ldp-policy=
> > -Target Joined Var(aarch64_ldp_policy_param) Enum(aarch64_ldp_policy)
> > Init(LDP_POLICY_DEFAULT) Param
> > +Target Joined Var(aarch64_ldp_policy_param) Enum(aarch64_ldp_stp_policy)
> > Init(AARCH64_LDP_STP_POLICY_DEFAULT) Param
> > --param=aarch64-ldp-policy=[default|always|never|aligned] Fine-grained
> > policy for load pairs.
> >
> > -Enum
> > -Name(aarch64_ldp_policy) Type(enum aarch64_ldp_policy)
> > UnknownError(unknown aarch64_ldp_policy mode %qs)
> > -
> > -EnumValue
> > -Enum(aarch64_ldp_policy) String(default) Value(LDP_POLICY_DEFAULT)
> > -
> > -EnumValue
> > -Enum(aarch64_ldp_policy) String(always) Value(LDP_POLICY_ALWAYS)
> > -
> > -EnumValue
> > -Enum(aarch64_ldp_policy) String(never) Value(LDP_POLICY_NEVER)
> > -
> > -EnumValue
> > -Enum(aarch64_ldp_policy) String(aligned) Value(LDP_POLICY_ALIGNED)
> > -
> > -param=aarch64-stp-policy=
> > -Target Joined Var(aarch64_stp_policy_param) Enum(aarch64_stp_policy)
> > Init(STP_POLICY_DEFAULT) Param
> > +Target Joined Var(aarch64_stp_policy_param) Enum(aarch64_ldp_stp_policy)
> > Init(AARCH64_LDP_STP_POLICY_DEFAULT) Param
> > --param=aarch64-stp-policy=[default|always|never|aligned] Fine-grained
> > policy for store pairs.
> >
> > Enum
> > -Name(aarch64_stp_policy) Type(enum aarch64_stp_policy)
> > UnknownError(unknown aarch64_stp_policy mode %qs)
> > +Name(aarch64_ldp_stp_policy) Type(enum aarch64_ldp_stp_policy)
> > UnknownError(unknown LDP/STP policy %qs)
> >
> > EnumValue
> > -Enum(aarch64_stp_policy) String(default) Value(STP_POLICY_DEFAULT)
> > +Enum(aarch64_ldp_stp_policy) String(default)
> > Value(AARCH64_LDP_STP_POLICY_DEFAULT)
> >
> > EnumValue
> > -Enum(aarch64_stp_policy) String(always) Value(STP_POLICY_ALWAYS)
> > +Enum(aarch64_ldp_stp_policy) String(always)
> > Value(AARCH64_LDP_STP_POLICY_ALWAYS)
> >
> > EnumValue
> > -Enum(aarch64_stp_policy) String(never) Value(STP_POLICY_NEVER)
> > +Enum(aarch64_ldp_stp_policy) String(never)
> > Value(AARCH64_LDP_STP_POLICY_NEVER)
> >
> > EnumValue
> > -Enum(aarch64_stp_policy) String(aligned) Value(STP_POLICY_ALIGNED)
> > +Enum(aarch64_ldp_stp_policy) String(aligned)
> > Value(AARCH64_LDP_STP_POLICY_ALIGNED)
> > diff --git a/gcc/testsuite/gcc.target/aarch64/ldp_aligned.c
> > b/gcc/testsuite/gcc.target/aarch64/ldp_aligned.c
> > index f44f9616366..75495d71df2 100644
> > --- a/gcc/testsuite/gcc.target/aarch64/ldp_aligned.c
> > +++ b/gcc/testsuite/gcc.target/aarch64/ldp_aligned.c
> > @@ -14,16 +14,6 @@ TYPE ldp_aligned_##TYPE(char* ptr){ \
> > return a_0 + a_1; \
> > }
> >
> > -#define LDP_TEST_UNALIGNED(TYPE) \
> > -TYPE ldp_unaligned_##TYPE(char* ptr){ \
> > - TYPE a_0, a_1; \
> > - TYPE *arr = (TYPE*) ((uintptr_t)ptr & ~(2 * 8 * _Alignof(TYPE) - 1)); \
> > - TYPE *a = arr+1; \
> > - a_0 = a[0]; \
> > - a_1 = a[1]; \
> > - return a_0 + a_1; \
> > -}
> > -
> > #define LDP_TEST_ADJUST_ALIGNED(TYPE) \
> > TYPE ldp_aligned_adjust_##TYPE(char* ptr){ \
> > TYPE a_0, a_1, a_2, a_3, a_4; \
> > @@ -36,29 +26,11 @@ TYPE ldp_aligned_adjust_##TYPE(char* ptr){ \
> > return a_0 + a_1 + a_2 + a_3 + a_4; \
> > }
> >
> > -#define LDP_TEST_ADJUST_UNALIGNED(TYPE) \
> > -TYPE ldp_unaligned_adjust_##TYPE(char* ptr){ \
> > - TYPE a_0, a_1, a_2, a_3, a_4; \
> > - TYPE *arr = (TYPE*) ((uintptr_t)ptr & ~(2 * 8 * _Alignof(TYPE) - 1)); \
> > - TYPE *a = arr+1; \
> > - a_0 = a[100]; \
> > - a_1 = a[101]; \
> > - a_2 = a[102]; \
> > - a_3 = a[103]; \
> > - a_4 = a[110]; \
> > - return a_0 + a_1 + a_2 + a_3 + a_4; \
> > -}
> > -
> > LDP_TEST_ALIGNED(int32_t);
> > LDP_TEST_ALIGNED(int64_t);
> > LDP_TEST_ALIGNED(v4si);
> > -LDP_TEST_UNALIGNED(int32_t);
> > -LDP_TEST_UNALIGNED(int64_t);
> > -LDP_TEST_UNALIGNED(v4si);
> > LDP_TEST_ADJUST_ALIGNED(int32_t);
> > LDP_TEST_ADJUST_ALIGNED(int64_t);
> > -LDP_TEST_ADJUST_UNALIGNED(int32_t);
> > -LDP_TEST_ADJUST_UNALIGNED(int64_t);
> >
> > /* { dg-final { scan-assembler-times "ldp\tw\[0-9\]+, w\[0-9\]" 3 } } */
> > /* { dg-final { scan-assembler-times "ldp\tx\[0-9\]+, x\[0-9\]" 3 } } */
> > diff --git a/gcc/testsuite/gcc.target/aarch64/ldp_unaligned.c
> > b/gcc/testsuite/gcc.target/aarch64/ldp_unaligned.c
> > new file mode 100644
> > index 00000000000..d9dcfe432f0
> > --- /dev/null
> > +++ b/gcc/testsuite/gcc.target/aarch64/ldp_unaligned.c
> > @@ -0,0 +1,40 @@
> > +/* { dg-options "-O2 --param=aarch64-ldp-policy=aligned -mcpu=generic" } */
> > +
> > +#include <stdlib.h>
> > +#include <stdint.h>
> > +
> > +typedef int v4si __attribute__ ((vector_size (16)));
> > +
> > +#define LDP_TEST_UNALIGNED(TYPE) \
> > +TYPE ldp_unaligned_##TYPE(char* ptr){ \
> > + TYPE a_0, a_1; \
> > + TYPE *arr = (TYPE*) ((uintptr_t)ptr & ~(2 * 8 * _Alignof(TYPE) - 1)); \
> > + TYPE *a = arr+1; \
> > + a_0 = a[0]; \
> > + a_1 = a[1]; \
> > + return a_0 + a_1; \
> > +}
> > +
> > +#define LDP_TEST_ADJUST_UNALIGNED(TYPE) \
> > +TYPE ldp_unaligned_adjust_##TYPE(char* ptr){ \
> > + TYPE a_0, a_1, a_2, a_3, a_4; \
> > + TYPE *arr = (TYPE*) ((uintptr_t)ptr & ~(2 * 8 * _Alignof(TYPE) - 1)); \
> > + TYPE *a = arr+1; \
> > + a_0 = a[100]; \
> > + a_1 = a[101]; \
> > + a_2 = a[102]; \
> > + a_3 = a[103]; \
> > + a_4 = a[110]; \
> > + return a_0 + a_1 + a_2 + a_3 + a_4; \
> > +}
> > +
> > +LDP_TEST_UNALIGNED(int32_t);
> > +LDP_TEST_UNALIGNED(int64_t);
> > +LDP_TEST_UNALIGNED(v4si);
> > +LDP_TEST_ADJUST_UNALIGNED(int32_t);
> > +LDP_TEST_ADJUST_UNALIGNED(int64_t);
> > +
> > +/* { dg-final { scan-assembler-times "ldp\tw\[0-9\]+, w\[0-9\]" 0 } } */
> > +/* { dg-final { scan-assembler-times "ldp\tx\[0-9\]+, x\[0-9\]" 0 } } */
> > +/* { dg-final { scan-assembler-times "ldp\tq\[0-9\]+, q\[0-9\]" 0 } } */
> > +
> > diff --git a/gcc/testsuite/gcc.target/aarch64/stp_aligned.c
> > b/gcc/testsuite/gcc.target/aarch64/stp_aligned.c
> > index ab9c2f42dd3..20bd95373fa 100644
> > --- a/gcc/testsuite/gcc.target/aarch64/stp_aligned.c
> > +++ b/gcc/testsuite/gcc.target/aarch64/stp_aligned.c
> > @@ -13,15 +13,6 @@ TYPE *stp_aligned_##TYPE(char* ptr, TYPE x){ \
> > return arr; \
> > }
> >
> > -#define STP_TEST_UNALIGNED(TYPE) \
> > -TYPE *stp_unaligned_##TYPE(char* ptr, TYPE x){ \
> > - TYPE *arr = (TYPE*) ((uintptr_t)ptr & ~(2 * 8 * _Alignof(TYPE) - 1)); \
> > - TYPE *a = arr+1; \
> > - a[0] = x; \
> > - a[1] = x; \
> > - return a; \
> > -}
> > -
> > #define STP_TEST_ADJUST_ALIGNED(TYPE) \
> > TYPE *stp_aligned_adjust_##TYPE(char* ptr, TYPE x){ \
> > TYPE *arr = (TYPE*) ((uintptr_t)ptr & ~(2 * 8 * _Alignof(TYPE) - 1)); \
> > @@ -32,27 +23,11 @@ TYPE *stp_aligned_adjust_##TYPE(char* ptr, TYPE x){ \
> > return arr; \
> > }
> >
> > -#define STP_TEST_ADJUST_UNALIGNED(TYPE) \
> > -TYPE *stp_unaligned_adjust_##TYPE(char* ptr, TYPE x){ \
> > - TYPE *arr = (TYPE*) ((uintptr_t)ptr & ~(2 * 8 * _Alignof(TYPE) - 1)); \
> > - TYPE *a = arr+1; \
> > - a[100] = x; \
> > - a[101] = x; \
> > - a[102] = x; \
> > - a[103] = x; \
> > - return a; \
> > -}
> > -
> > STP_TEST_ALIGNED(int32_t);
> > STP_TEST_ALIGNED(int64_t);
> > STP_TEST_ALIGNED(v4si);
> > -STP_TEST_UNALIGNED(int32_t);
> > -STP_TEST_UNALIGNED(int64_t);
> > -STP_TEST_UNALIGNED(v4si);
> > STP_TEST_ADJUST_ALIGNED(int32_t);
> > STP_TEST_ADJUST_ALIGNED(int64_t);
> > -STP_TEST_ADJUST_UNALIGNED(int32_t);
> > -STP_TEST_ADJUST_UNALIGNED(int64_t);
> >
> > /* { dg-final { scan-assembler-times "stp\tw\[0-9\]+, w\[0-9\]" 3 } } */
> > /* { dg-final { scan-assembler-times "stp\tx\[0-9\]+, x\[0-9\]" 3 } } */
> > diff --git a/gcc/testsuite/gcc.target/aarch64/stp_unaligned.c
> > b/gcc/testsuite/gcc.target/aarch64/stp_unaligned.c
> > new file mode 100644
> > index 00000000000..9a5690af362
> > --- /dev/null
> > +++ b/gcc/testsuite/gcc.target/aarch64/stp_unaligned.c
> > @@ -0,0 +1,37 @@
> > +/* { dg-options "-O2 --param=aarch64-stp-policy=aligned -mcpu=generic" } */
> > +
> > +#include <stdlib.h>
> > +#include <stdint.h>
> > +
> > +typedef int v4si __attribute__ ((vector_size (16)));
> > +
> > +#define STP_TEST_UNALIGNED(TYPE) \
> > +TYPE *stp_unaligned_##TYPE(char* ptr, TYPE x){ \
> > + TYPE *arr = (TYPE*) ((uintptr_t)ptr & ~(2 * 8 * _Alignof(TYPE) - 1)); \
> > + TYPE *a = arr+1; \
> > + a[0] = x; \
> > + a[1] = x; \
> > + return a; \
> > +}
> > +
> > +#define STP_TEST_ADJUST_UNALIGNED(TYPE) \
> > +TYPE *stp_unaligned_adjust_##TYPE(char* ptr, TYPE x){ \
> > + TYPE *arr = (TYPE*) ((uintptr_t)ptr & ~(2 * 8 * _Alignof(TYPE) - 1)); \
> > + TYPE *a = arr+1; \
> > + a[100] = x; \
> > + a[101] = x; \
> > + a[102] = x; \
> > + a[103] = x; \
> > + return a; \
> > +}
> > +
> > +STP_TEST_UNALIGNED(int32_t);
> > +STP_TEST_UNALIGNED(int64_t);
> > +STP_TEST_UNALIGNED(v4si);
> > +STP_TEST_ADJUST_UNALIGNED(int32_t);
> > +STP_TEST_ADJUST_UNALIGNED(int64_t);
> > +
> > +/* { dg-final { scan-assembler-times "stp\tw\[0-9\]+, w\[0-9\]" 0 } } */
> > +/* { dg-final { scan-assembler-times "stp\tx\[0-9\]+, x\[0-9\]" 0 } } */
> > +/* { dg-final { scan-assembler-times "stp\tq\[0-9\]+, q\[0-9\]" 0 } } */
> > +
