ping
> -----Original Message-----
> From: Wilco Dijkstra [mailto:wilco.dijks...@arm.com]
> Sent: 19 November 2015 18:12
> To: gcc-patches@gcc.gnu.org
> Subject: [PATCH][ARM] Enable fusion of AES instructions
>
> Enable instruction fusion of AES instructions on ARM for Cortex-A53 and
> Cortex-A57.
>
> OK for commit?
>
> ChangeLog:
> 2015-11-20 Wilco Dijkstra <wdijk...@arm.com>
>
> * gcc/config/arm/arm.c (arm_cortex_a53_tune): Add AES fusion.
> (arm_cortex_a57_tune): Likewise.
> (aarch_macro_fusion_pair_p): Add support for AES fusion.
> * gcc/config/arm/arm-protos.h (fuse_ops): Add FUSE_AES_AESMC.
>
> ---
> gcc/config/arm/arm-protos.h | 5 +++--
> gcc/config/arm/arm.c | 9 +++++++--
> 2 files changed, 10 insertions(+), 4 deletions(-)
>
> diff --git a/gcc/config/arm/arm-protos.h b/gcc/config/arm/arm-protos.h
> index f9b1276..4801bb8 100644
> --- a/gcc/config/arm/arm-protos.h
> +++ b/gcc/config/arm/arm-protos.h
> @@ -302,8 +302,9 @@ struct tune_params
> enum fuse_ops
> {
> FUSE_NOTHING = 0,
> - FUSE_MOVW_MOVT = 1 << 0
> - } fusible_ops: 1;
> + FUSE_MOVW_MOVT = 1 << 0,
> + FUSE_AES_AESMC = 1 << 1
> + } fusible_ops: 2;
> /* Depth of scheduling queue to check for L2 autoprefetcher. */
> enum {SCHED_AUTOPREF_OFF, SCHED_AUTOPREF_RANK, SCHED_AUTOPREF_FULL}
> sched_autopref: 2;
> diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c
> index 02f5dc3..7077199 100644
> --- a/gcc/config/arm/arm.c
> +++ b/gcc/config/arm/arm.c
> @@ -1969,7 +1969,7 @@ const struct tune_params arm_cortex_a53_tune =
> tune_params::DISPARAGE_FLAGS_NEITHER,
> tune_params::PREF_NEON_64_FALSE,
> tune_params::PREF_NEON_STRINGOPS_TRUE,
> - FUSE_OPS (tune_params::FUSE_MOVW_MOVT),
> + FUSE_OPS (tune_params::FUSE_MOVW_MOVT | tune_params::FUSE_AES_AESMC),
> tune_params::SCHED_AUTOPREF_OFF
> };
>
> @@ -1992,7 +1992,7 @@ const struct tune_params arm_cortex_a57_tune =
> tune_params::DISPARAGE_FLAGS_ALL,
> tune_params::PREF_NEON_64_FALSE,
> tune_params::PREF_NEON_STRINGOPS_TRUE,
> - FUSE_OPS (tune_params::FUSE_MOVW_MOVT),
> + FUSE_OPS (tune_params::FUSE_MOVW_MOVT | tune_params::FUSE_AES_AESMC),
> tune_params::SCHED_AUTOPREF_FULL
> };
>
> @@ -29668,6 +29668,11 @@ aarch_macro_fusion_pair_p (rtx_insn* prev, rtx_insn*
> curr)
> && REGNO (SET_DEST (curr_set)) == REGNO (SET_DEST (prev_set)))
> return true;
> }
> +
> + if (current_tune->fusible_ops & tune_params::FUSE_AES_AESMC
> + && aarch_crypto_can_dual_issue (prev, curr))
> + return true;
> +
> return false;
> }
>
> --
> 1.9.1