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Subject: [PATCH] AArch64: Enable fast shifts on Neoverse V1/N2
Thread-Topic: [PATCH] AArch64: Enable fast shifts on Neoverse V1/N2
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From: Wilco Dijkstra via Gcc-patches <gcc-patches@gcc.gnu.org>
Reply-To: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
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| Series |
AArch64: Enable fast shifts on Neoverse V1/N2
|
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Commit Message
Wilco Dijkstra
Oct. 18, 2021, 4:21 p.m. UTC
Enable the fast shift feature in Neoverse V1 and N2 tunings as well.
ChangeLog:
2021-10-18 Wilco Dijkstra <wdijkstr@arm.com>
* config/aarch64/aarch64.c (neoversev1_tunings):
Enable AARCH64_EXTRA_TUNE_CHEAP_SHIFT_EXTEND.
(neoversen2_tunings): Likewise.
---
Comments
Wilco Dijkstra <Wilco.Dijkstra@arm.com> writes: > Enable the fast shift feature in Neoverse V1 and N2 tunings as well. > > ChangeLog: > 2021-10-18 Wilco Dijkstra <wdijkstr@arm.com> > > * config/aarch64/aarch64.c (neoversev1_tunings): > Enable AARCH64_EXTRA_TUNE_CHEAP_SHIFT_EXTEND. > (neoversen2_tunings): Likewise. OK, thanks. Richard > > --- > > diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c > index c7b76a7cdeea0539cd73f7987d1a4354d0a40624..e65afe39047359a3279ae6b2047a3e9a04e6c2a9 100644 > --- a/gcc/config/aarch64/aarch64.c > +++ b/gcc/config/aarch64/aarch64.c > @@ -1832,7 +1832,8 @@ static const struct tune_params neoversev1_tunings = > tune_params::AUTOPREFETCHER_WEAK, /* autoprefetcher_model. */ > (AARCH64_EXTRA_TUNE_CSE_SVE_VL_CONSTANTS > | AARCH64_EXTRA_TUNE_USE_NEW_VECTOR_COSTS > - | AARCH64_EXTRA_TUNE_MATCHED_VECTOR_THROUGHPUT), /* tune_flags. */ > + | AARCH64_EXTRA_TUNE_MATCHED_VECTOR_THROUGHPUT > + | AARCH64_EXTRA_TUNE_CHEAP_SHIFT_EXTEND), /* tune_flags. */ > &generic_prefetch_tune > }; > > @@ -1858,7 +1859,7 @@ static const struct tune_params neoversen2_tunings = > 2, /* min_div_recip_mul_df. */ > 0, /* max_case_values. */ > tune_params::AUTOPREFETCHER_WEAK, /* autoprefetcher_model. */ > - (AARCH64_EXTRA_TUNE_NONE), /* tune_flags. */ > + (AARCH64_EXTRA_TUNE_CHEAP_SHIFT_EXTEND), /* tune_flags. */ > &generic_prefetch_tune > };
diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c index c7b76a7cdeea0539cd73f7987d1a4354d0a40624..e65afe39047359a3279ae6b2047a3e9a04e6c2a9 100644 --- a/gcc/config/aarch64/aarch64.c +++ b/gcc/config/aarch64/aarch64.c @@ -1832,7 +1832,8 @@ static const struct tune_params neoversev1_tunings = tune_params::AUTOPREFETCHER_WEAK, /* autoprefetcher_model. */ (AARCH64_EXTRA_TUNE_CSE_SVE_VL_CONSTANTS | AARCH64_EXTRA_TUNE_USE_NEW_VECTOR_COSTS - | AARCH64_EXTRA_TUNE_MATCHED_VECTOR_THROUGHPUT), /* tune_flags. */ + | AARCH64_EXTRA_TUNE_MATCHED_VECTOR_THROUGHPUT + | AARCH64_EXTRA_TUNE_CHEAP_SHIFT_EXTEND), /* tune_flags. */ &generic_prefetch_tune }; @@ -1858,7 +1859,7 @@ static const struct tune_params neoversen2_tunings = 2, /* min_div_recip_mul_df. */ 0, /* max_case_values. */ tune_params::AUTOPREFETCHER_WEAK, /* autoprefetcher_model. */ - (AARCH64_EXTRA_TUNE_NONE), /* tune_flags. */ + (AARCH64_EXTRA_TUNE_CHEAP_SHIFT_EXTEND), /* tune_flags. */ &generic_prefetch_tune };