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* [gcc r13-4018] aarch64: Add support for Ampere-1A (-mcpu=ampere1a) CPU
@ 2022-11-14 13:52 Philipp Tomsich
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From: Philipp Tomsich @ 2022-11-14 13:52 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:590a06afbf0e96813b5879742f38f3665512c854
commit r13-4018-g590a06afbf0e96813b5879742f38f3665512c854
Author: Philipp Tomsich <philipp.tomsich@vrull.eu>
Date: Mon Nov 7 14:22:21 2022 +0100
aarch64: Add support for Ampere-1A (-mcpu=ampere1a) CPU
This patch adds support for Ampere-1A CPU:
- recognize the name of the core and provide detection for -mcpu=native,
- updated extra_costs,
- adds a new fusion pair for (A+B+1 and A-B-1).
Ampere-1A and Ampere-1 have more timing difference than the extra
costs indicate, but these don't propagate through to the headline
items in our extra costs (e.g. the change in latency for scalar sqrt
doesn't have a corresponding table entry).
gcc/ChangeLog:
* config/aarch64/aarch64-cores.def (AARCH64_CORE): Add ampere1a.
* config/aarch64/aarch64-cost-tables.h: Add ampere1a_extra_costs.
* config/aarch64/aarch64-fusion-pairs.def (AARCH64_FUSION_PAIR):
Define a new fusion pair for A+B+1/A-B-1 (i.e., add/subtract two
registers and then +1/-1).
* config/aarch64/aarch64-tune.md: Regenerate.
* config/aarch64/aarch64.cc (aarch_macro_fusion_pair_p): Implement
idiom-matcher for the new fusion pair.
* doc/invoke.texi: Add ampere1a.
Diff:
---
gcc/config/aarch64/aarch64-cores.def | 1 +
gcc/config/aarch64/aarch64-cost-tables.h | 107 ++++++++++++++++++++++++++++
gcc/config/aarch64/aarch64-fusion-pairs.def | 1 +
gcc/config/aarch64/aarch64-tune.md | 2 +-
gcc/config/aarch64/aarch64.cc | 64 +++++++++++++++++
gcc/doc/invoke.texi | 2 +-
6 files changed, 175 insertions(+), 2 deletions(-)
diff --git a/gcc/config/aarch64/aarch64-cores.def b/gcc/config/aarch64/aarch64-cores.def
index d2671778928..aead587cec1 100644
--- a/gcc/config/aarch64/aarch64-cores.def
+++ b/gcc/config/aarch64/aarch64-cores.def
@@ -70,6 +70,7 @@ AARCH64_CORE("thunderxt83", thunderxt83, thunderx, V8A, (CRC, CRYPTO), thu
/* Ampere Computing ('\xC0') cores. */
AARCH64_CORE("ampere1", ampere1, cortexa57, V8_6A, (F16, RNG, AES, SHA3), ampere1, 0xC0, 0xac3, -1)
+AARCH64_CORE("ampere1a", ampere1a, cortexa57, V8_6A, (F16, RNG, AES, SHA3, MEMTAG), ampere1a, 0xC0, 0xac4, -1)
/* Do not swap around "emag" and "xgene1",
this order is required to handle variant correctly. */
AARCH64_CORE("emag", emag, xgene1, V8A, (CRC, CRYPTO), emag, 0x50, 0x000, 3)
diff --git a/gcc/config/aarch64/aarch64-cost-tables.h b/gcc/config/aarch64/aarch64-cost-tables.h
index 760d7b30368..48522606fbe 100644
--- a/gcc/config/aarch64/aarch64-cost-tables.h
+++ b/gcc/config/aarch64/aarch64-cost-tables.h
@@ -775,4 +775,111 @@ const struct cpu_cost_table ampere1_extra_costs =
}
};
+const struct cpu_cost_table ampere1a_extra_costs =
+{
+ /* ALU */
+ {
+ 0, /* arith. */
+ 0, /* logical. */
+ 0, /* shift. */
+ COSTS_N_INSNS (1), /* shift_reg. */
+ 0, /* arith_shift. */
+ COSTS_N_INSNS (1), /* arith_shift_reg. */
+ 0, /* log_shift. */
+ COSTS_N_INSNS (1), /* log_shift_reg. */
+ 0, /* extend. */
+ COSTS_N_INSNS (1), /* extend_arith. */
+ 0, /* bfi. */
+ 0, /* bfx. */
+ 0, /* clz. */
+ 0, /* rev. */
+ 0, /* non_exec. */
+ true /* non_exec_costs_exec. */
+ },
+ {
+ /* MULT SImode */
+ {
+ COSTS_N_INSNS (3), /* simple. */
+ COSTS_N_INSNS (3), /* flag_setting. */
+ COSTS_N_INSNS (3), /* extend. */
+ COSTS_N_INSNS (4), /* add. */
+ COSTS_N_INSNS (4), /* extend_add. */
+ COSTS_N_INSNS (19) /* idiv. */
+ },
+ /* MULT DImode */
+ {
+ COSTS_N_INSNS (3), /* simple. */
+ 0, /* flag_setting (N/A). */
+ COSTS_N_INSNS (3), /* extend. */
+ COSTS_N_INSNS (4), /* add. */
+ COSTS_N_INSNS (4), /* extend_add. */
+ COSTS_N_INSNS (35) /* idiv. */
+ }
+ },
+ /* LD/ST */
+ {
+ COSTS_N_INSNS (4), /* load. */
+ COSTS_N_INSNS (4), /* load_sign_extend. */
+ 0, /* ldrd (n/a). */
+ 0, /* ldm_1st. */
+ 0, /* ldm_regs_per_insn_1st. */
+ 0, /* ldm_regs_per_insn_subsequent. */
+ COSTS_N_INSNS (5), /* loadf. */
+ COSTS_N_INSNS (5), /* loadd. */
+ COSTS_N_INSNS (5), /* load_unaligned. */
+ 0, /* store. */
+ 0, /* strd. */
+ 0, /* stm_1st. */
+ 0, /* stm_regs_per_insn_1st. */
+ 0, /* stm_regs_per_insn_subsequent. */
+ COSTS_N_INSNS (2), /* storef. */
+ COSTS_N_INSNS (2), /* stored. */
+ COSTS_N_INSNS (2), /* store_unaligned. */
+ COSTS_N_INSNS (3), /* loadv. */
+ COSTS_N_INSNS (3) /* storev. */
+ },
+ {
+ /* FP SFmode */
+ {
+ COSTS_N_INSNS (25), /* div. */
+ COSTS_N_INSNS (4), /* mult. */
+ COSTS_N_INSNS (4), /* mult_addsub. */
+ COSTS_N_INSNS (4), /* fma. */
+ COSTS_N_INSNS (4), /* addsub. */
+ COSTS_N_INSNS (2), /* fpconst. */
+ COSTS_N_INSNS (4), /* neg. */
+ COSTS_N_INSNS (4), /* compare. */
+ COSTS_N_INSNS (4), /* widen. */
+ COSTS_N_INSNS (4), /* narrow. */
+ COSTS_N_INSNS (4), /* toint. */
+ COSTS_N_INSNS (4), /* fromint. */
+ COSTS_N_INSNS (4) /* roundint. */
+ },
+ /* FP DFmode */
+ {
+ COSTS_N_INSNS (34), /* div. */
+ COSTS_N_INSNS (5), /* mult. */
+ COSTS_N_INSNS (5), /* mult_addsub. */
+ COSTS_N_INSNS (5), /* fma. */
+ COSTS_N_INSNS (5), /* addsub. */
+ COSTS_N_INSNS (2), /* fpconst. */
+ COSTS_N_INSNS (5), /* neg. */
+ COSTS_N_INSNS (5), /* compare. */
+ COSTS_N_INSNS (5), /* widen. */
+ COSTS_N_INSNS (5), /* narrow. */
+ COSTS_N_INSNS (6), /* toint. */
+ COSTS_N_INSNS (6), /* fromint. */
+ COSTS_N_INSNS (5) /* roundint. */
+ }
+ },
+ /* Vector */
+ {
+ COSTS_N_INSNS (3), /* alu. */
+ COSTS_N_INSNS (3), /* mult. */
+ COSTS_N_INSNS (2), /* movi. */
+ COSTS_N_INSNS (2), /* dup. */
+ COSTS_N_INSNS (2) /* extract. */
+ }
+};
+
#endif
diff --git a/gcc/config/aarch64/aarch64-fusion-pairs.def b/gcc/config/aarch64/aarch64-fusion-pairs.def
index c064fb9b85d..d91f8a2babd 100644
--- a/gcc/config/aarch64/aarch64-fusion-pairs.def
+++ b/gcc/config/aarch64/aarch64-fusion-pairs.def
@@ -36,5 +36,6 @@ AARCH64_FUSION_PAIR ("cmp+branch", CMP_BRANCH)
AARCH64_FUSION_PAIR ("aes+aesmc", AES_AESMC)
AARCH64_FUSION_PAIR ("alu+branch", ALU_BRANCH)
AARCH64_FUSION_PAIR ("alu+cbz", ALU_CBZ)
+AARCH64_FUSION_PAIR ("addsub_2reg_const1", ADDSUB_2REG_CONST1)
#undef AARCH64_FUSION_PAIR
diff --git a/gcc/config/aarch64/aarch64-tune.md b/gcc/config/aarch64/aarch64-tune.md
index 22ec1be5a4c..b7d6fc8cc88 100644
--- a/gcc/config/aarch64/aarch64-tune.md
+++ b/gcc/config/aarch64/aarch64-tune.md
@@ -1,5 +1,5 @@
;; -*- buffer-read-only: t -*-
;; Generated automatically by gentune.sh from aarch64-cores.def
(define_attr "tune"
- "cortexa34,cortexa35,cortexa53,cortexa57,cortexa72,cortexa73,thunderx,thunderxt88p1,thunderxt88,octeontx,octeontxt81,octeontxt83,thunderxt81,thunderxt83,ampere1,emag,xgene1,falkor,qdf24xx,exynosm1,phecda,thunderx2t99p1,vulcan,thunderx2t99,cortexa55,cortexa75,cortexa76,cortexa76ae,cortexa77,cortexa78,cortexa78ae,cortexa78c,cortexa65,cortexa65ae,cortexx1,cortexx1c,ares,neoversen1,neoversee1,octeontx2,octeontx2t98,octeontx2t96,octeontx2t93,octeontx2f95,octeontx2f95n,octeontx2f95mm,a64fx,tsv110,thunderx3t110,zeus,neoversev1,neoverse512tvb,saphira,cortexa57cortexa53,cortexa72cortexa53,cortexa73cortexa35,cortexa73cortexa53,cortexa75cortexa55,cortexa76cortexa55,cortexr82,cortexa510,cortexa710,cortexa715,cortexx2,neoversen2,demeter,neoversev2"
+ "cortexa34,cortexa35,cortexa53,cortexa57,cortexa72,cortexa73,thunderx,thunderxt88p1,thunderxt88,octeontx,octeontxt81,octeontxt83,thunderxt81,thunderxt83,ampere1,ampere1a,emag,xgene1,falkor,qdf24xx,exynosm1,phecda,thunderx2t99p1,vulcan,thunderx2t99,cortexa55,cortexa75,cortexa76,cortexa76ae,cortexa77,cortexa78,cortexa78ae,cortexa78c,cortexa65,cortexa65ae,cortexx1,cortexx1c,ares,neoversen1,neoversee1,octeontx2,octeontx2t98,octeontx2t96,octeontx2t93,octeontx2f95,octeontx2f95n,octeontx2f95mm,a64fx,tsv110,thunderx3t110,zeus,neoversev1,neoverse512tvb,saphira,cortexa57cortexa53,cortexa72cortexa53,cortexa73cortexa35,cortexa73cortexa53,cortexa75cortexa55,cortexa76cortexa55,cortexr82,cortexa510,cortexa710,cortexa715,cortexx2,neoversen2,demeter,neoversev2"
(const (symbol_ref "((enum attr_tune) aarch64_tune)")))
diff --git a/gcc/config/aarch64/aarch64.cc b/gcc/config/aarch64/aarch64.cc
index d1f979ebcf8..a7f7c3c0121 100644
--- a/gcc/config/aarch64/aarch64.cc
+++ b/gcc/config/aarch64/aarch64.cc
@@ -1921,6 +1921,43 @@ static const struct tune_params ampere1_tunings =
&ere1_prefetch_tune
};
+static const struct tune_params ampere1a_tunings =
+{
+ &ere1a_extra_costs,
+ &generic_addrcost_table,
+ &generic_regmove_cost,
+ &ere1_vector_cost,
+ &generic_branch_cost,
+ &generic_approx_modes,
+ SVE_NOT_IMPLEMENTED, /* sve_width */
+ { 4, /* load_int. */
+ 4, /* store_int. */
+ 4, /* load_fp. */
+ 4, /* store_fp. */
+ 4, /* load_pred. */
+ 4 /* store_pred. */
+ }, /* memmov_cost. */
+ 4, /* issue_rate */
+ (AARCH64_FUSE_ADRP_ADD | AARCH64_FUSE_AES_AESMC |
+ AARCH64_FUSE_MOV_MOVK | AARCH64_FUSE_MOVK_MOVK |
+ AARCH64_FUSE_ALU_BRANCH /* adds, ands, bics, ccmp, ccmn */ |
+ AARCH64_FUSE_CMP_BRANCH | AARCH64_FUSE_ALU_CBZ |
+ AARCH64_FUSE_ADDSUB_2REG_CONST1),
+ /* fusible_ops */
+ "32", /* function_align. */
+ "4", /* jump_align. */
+ "32:16", /* loop_align. */
+ 2, /* int_reassoc_width. */
+ 4, /* fp_reassoc_width. */
+ 2, /* vec_reassoc_width. */
+ 2, /* min_div_recip_mul_sf. */
+ 2, /* min_div_recip_mul_df. */
+ 0, /* max_case_values. */
+ tune_params::AUTOPREFETCHER_WEAK, /* autoprefetcher_model. */
+ (AARCH64_EXTRA_TUNE_NONE), /* tune_flags. */
+ &ere1_prefetch_tune
+};
+
static const advsimd_vec_cost neoversev1_advsimd_vector_cost =
{
2, /* int_stmt_cost */
@@ -25539,6 +25576,33 @@ aarch_macro_fusion_pair_p (rtx_insn *prev, rtx_insn *curr)
}
}
+ /* Fuse A+B+1 and A-B-1 */
+ if (simple_sets_p
+ && aarch64_fusion_enabled_p (AARCH64_FUSE_ADDSUB_2REG_CONST1))
+ {
+ /* We're trying to match:
+ prev == (set (r0) (plus (r0) (r1)))
+ curr == (set (r0) (plus (r0) (const_int 1)))
+ or:
+ prev == (set (r0) (minus (r0) (r1)))
+ curr == (set (r0) (plus (r0) (const_int -1))) */
+
+ rtx prev_src = SET_SRC (prev_set);
+ rtx curr_src = SET_SRC (curr_set);
+
+ int polarity = 1;
+ if (GET_CODE (prev_src) == MINUS)
+ polarity = -1;
+
+ if (GET_CODE (curr_src) == PLUS
+ && (GET_CODE (prev_src) == PLUS || GET_CODE (prev_src) == MINUS)
+ && CONST_INT_P (XEXP (curr_src, 1))
+ && INTVAL (XEXP (curr_src, 1)) == polarity
+ && REG_P (XEXP (curr_src, 0))
+ && REGNO (SET_DEST (prev_set)) == REGNO (XEXP (curr_src, 0)))
+ return true;
+ }
+
return false;
}
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 449df597298..2e4433d9a05 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -19995,7 +19995,7 @@ performance of the code. Permissible values for this option are:
@samp{cortex-a75.cortex-a55}, @samp{cortex-a76.cortex-a55},
@samp{cortex-r82}, @samp{cortex-x1}, @samp{cortex-x1c}, @samp{cortex-x2},
@samp{cortex-a510}, @samp{cortex-a710}, @samp{cortex-a715}, @samp{ampere1},
-@samp{native}.
+@samp{ampere1a}, and @samp{native}.
The values @samp{cortex-a57.cortex-a53}, @samp{cortex-a72.cortex-a53},
@samp{cortex-a73.cortex-a35}, @samp{cortex-a73.cortex-a53},
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