gcc/ChangeLog:
* config/riscv/andes-25-series.md: New file.
* config/riscv/riscv-cores.def (RISCV_TUNE): Add andes-25-series.
(RISCV_CORE): Add Andes 25-series cpu list.
* config/riscv/riscv-opts.h
(enum riscv_microarchitecture_type): Add andes_25_series_.
* config/riscv/riscv.cc: Add andes_25_tune_info.
* config/riscv/riscv.md: Add andes_25.
* doc/riscv-mcpu.texi: Regenerated for Andes cpu list.
* doc/riscv-mtune.texi: Regenerated for andes-25-series.
---
gcc/config/riscv/andes-25-series.md | 322 ++++++++++++++++++++++++++++
gcc/config/riscv/riscv-cores.def | 10 +
gcc/config/riscv/riscv-opts.h | 1 +
gcc/config/riscv/riscv.cc | 24 +++
gcc/config/riscv/riscv.md | 4 +-
gcc/doc/riscv-mcpu.texi | 16 +-
gcc/doc/riscv-mtune.texi | 2 +
7 files changed, 377 insertions(+), 2 deletions(-)
create mode 100644 gcc/config/riscv/andes-25-series.md
diff --git a/gcc/config/riscv/andes-25-series.md
b/gcc/config/riscv/andes-25-series.md
new file mode 100644
index 00000000000..ef1a926de86
--- /dev/null
+++ b/gcc/config/riscv/andes-25-series.md
@@ -0,0 +1,322 @@
+;; DFA-based pipeline description for Andes 25 series.
+;;
+;; Copyright (C) 2025 Free Software Foundation, Inc.
+;;
+;; This file is part of GCC.
+;;
+;; GCC is free software; you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published
+;; by the Free Software Foundation; either version 3, or (at your
+;; option) any later version.
+
+;; GCC is distributed in the hope that it will be useful, but WITHOUT
+;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+;; or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
+;; License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GCC; see the file COPYING3. If not see
+;; <http://www.gnu.org/licenses/>.
+
+(define_automaton "andes_25_arch, andes_25_vector")
+
+;; Integer pipeline
+(define_cpu_unit "andes_25_pipe" "andes_25_arch")
+;; Division operation unit
+(define_cpu_unit "andes_25_mdu" "andes_25_arch")
+;; Floating point units
+(define_cpu_unit "andes_25_fpu, andes_25_fpu_eu" "andes_25_arch")
+
+;; Vector execution unit.
+(define_cpu_unit "andes_25_vpu_lsu, andes_25_vpu_alu, andes_25_vpu_mac,
+ andes_25_vpu_msk, andes_25_vpu_div, andes_25_vpu_fmac,
+ andes_25_vpu_fmis, andes_25_vpu_perm, andes_25_vpu_pipe"
+ "andes_25_vector")
+
+;; andes 25 series unsupported insns are mapped to dummies reservations
+(define_reservation "andes_25_dummies"
+ "andes_25_pipe | andes_25_mdu | andes_25_fpu"
+)
+
+;; andes 25 series vector unsupported insns are mapped to dummies reservations
+(define_reservation "andes_25_vector_dummies"
+ "andes_25_vpu_lsu | andes_25_vpu_alu | andes_25_vpu_mac | andes_25_vpu_msk |
+ andes_25_vpu_div | andes_25_vpu_fmac | andes_25_vpu_fmis |
+ andes_25_vpu_perm | andes_25_vpu_pipe"
+)
+
+(define_reservation "andes_25_fpu_arith"
+ "(andes_25_pipe + andes_25_fpu), andes_25_fpu_eu * 2")
+
+(define_reservation "andes_25_fpu_pipe"
+ "andes_25_pipe + andes_25_fpu")
+
+(define_insn_reservation "andes_25_alu_insn" 1
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "unknown,const,arith,shift,slt,multi,nop,logical,move,
+ auipc,atomic"))
+ "andes_25_pipe")
+
+(define_insn_reservation "andes_25_load_wd" 2
+ (and (eq_attr "tune" "andes_25_series")
+ (and (eq_attr "type" "load")
+ (not (eq_attr "mode" "QI,HI"))))
+ "andes_25_pipe")
+
+(define_insn_reservation "andes_25_load_bh" 3
+ (and (eq_attr "tune" "andes_25_series")
+ (and (eq_attr "type" "load")
+ (eq_attr "mode" "QI,HI")))
+ "andes_25_pipe")
+
+(define_insn_reservation "andes_25_store" 0
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "store"))
+ "andes_25_pipe")
+
+(define_insn_reservation "andes_25_branch" 0
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "branch,jump,call,jalr,trap,ret"))
+ "andes_25_pipe")
+
+(define_insn_reservation "andes_25_imul" 3
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "imul"))
+ "andes_25_pipe")
+
+(define_insn_reservation "andes_25_idivsi" 38
+ (and (eq_attr "tune" "andes_25_series")
+ (and (eq_attr "type" "idiv")
+ (eq_attr "mode" "SI")))
+ "andes_25_pipe, andes_25_mdu * 34")
+
+(define_insn_reservation "andes_25_idivdi" 70
+ (and (eq_attr "tune" "andes_25_series")
+ (and (eq_attr "type" "idiv")
+ (eq_attr "mode" "DI")))
+ "andes_25_pipe, andes_25_mdu * 66")
+
+(define_insn_reservation "andes_25_xfer" 1
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "mfc,mtc"))
+ "andes_25_pipe")
+
+(define_insn_reservation "andes_25_fpu_alu" 5
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "fadd"))
+ "andes_25_fpu_arith")
+
+(define_insn_reservation "andes_25_fpu_mul" 5
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "fmul"))
+ "andes_25_fpu_arith")
+
+(define_insn_reservation "andes_25_fpu_mac" 5
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "fmadd"))
+ "andes_25_fpu_arith")
+
+(define_insn_reservation "andes_25_fpu_div" 33
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "fdiv"))
+ "andes_25_fpu_arith, andes_25_fpu_eu * 27")
+
+(define_insn_reservation "andes_25_fpu_sqrt" 33
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "fsqrt"))
+ "andes_25_fpu_arith, andes_25_fpu_eu * 27")
+
+(define_insn_reservation "andes_25_fpu_move" 3
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "fmove,mtc,mfc"))
+ "andes_25_fpu_pipe")
+
+(define_insn_reservation "andes_25_fpu_cmp" 3
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "fcmp"))
+ "andes_25_fpu_pipe")
+
+(define_insn_reservation "andes_25_fpu_cvt" 6
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "fcvt,fcvt_i2f,fcvt_f2i"))
+ "andes_25_fpu_arith, andes_25_fpu_eu")
+
+(define_insn_reservation "andes_25_fpu_load" 3
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "fpload"))
+ "andes_25_fpu_pipe")
+
+(define_insn_reservation "andes_25_fpu_store" 0
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "fpstore"))
+ "andes_25_fpu_pipe")
+
+(define_insn_reservation "andes_25_bitmanip" 1
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "bitmanip"))
+ "andes_25_pipe")
+
+;; Vector pipeline.
+
+(define_insn_reservation "andes_25_vload" 5
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "vlde,vldm,vlds,vldff,vldr"))
+ "(andes_25_vpu_pipe + andes_25_vpu_lsu)*3")
+
+(define_insn_reservation "andes_25_index_vload" 8
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "vldux,vldox"))
+ "(andes_25_vpu_pipe + andes_25_vpu_lsu)*3")
+
+(define_insn_reservation "andes_25_seg_vload" 16
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "vlsegde,vlsegds,vlsegdux,vlsegdox,vlsegdff"))
+ "(andes_25_vpu_pipe + andes_25_vpu_lsu)*3")
+
+(define_insn_reservation "andes_25_vstore" 0
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "vste,vstm,vsts,vstux,vstox,vstr,vssegte,\
+ vssegts,vssegtux,vssegtox"))
+ "(andes_25_vpu_pipe + andes_25_vpu_lsu)*3")
+
+(define_insn_reservation "andes_25_vialu" 1
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "vialu,vicalu,vshift,viminmax,vicmp,vimov,\
+ vsalu,vaalu,vmov,vector,vimerge"))
+ "andes_25_vpu_pipe + andes_25_vpu_alu")
+
+(define_insn_reservation "andes_25_widen_vialu" 2
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "viwalu, vext, vsshift"))
+ "andes_25_vpu_pipe + andes_25_vpu_alu")
+
+(define_insn_reservation "andes_25_narrow_vialu" 3
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "vnshift,vnclip"))
+ "andes_25_vpu_pipe + andes_25_vpu_alu")
+
+(define_insn_reservation "andes_25_vimul" 2
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "vimul,vimuladd,vsmul"))
+ "andes_25_vpu_pipe + andes_25_vpu_mac")
+
+(define_insn_reservation "andes_25_widen_vimul" 3
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "viwmul,viwmuladd"))
+ "andes_25_vpu_pipe + andes_25_vpu_mac")
+
+(define_insn_reservation "andes_25_vperm" 3
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "vslideup,vslidedown,vislide1up,vislide1down,\
+ vfslide1up,vfslide1down,vgather"))
+ "andes_25_vpu_pipe + andes_25_vpu_perm")
+
+(define_insn_reservation "andes_25_vcompress" 4
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "vcompress"))
+ "andes_25_vpu_pipe + andes_25_vpu_perm")
+
+(define_insn_reservation "andes_25_vmovv" 7
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "vimovvx,vfmovvf"))
+ "(andes_25_vpu_pipe + andes_25_vpu_perm)*5")
+
+(define_insn_reservation "andes_25_vmovx" 3
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "vimovxv,vfmovfv,vfmov"))
+ "andes_25_vpu_pipe + andes_25_vpu_perm")
+
+(define_insn_reservation "andes_25_vreduction" 3
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "vired,viwred"))
+ "andes_25_vpu_pipe + andes_25_vpu_alu*5")
+
+(define_insn_reservation "andes_25_vidiv" 35
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "vidiv"))
+ "andes_25_vpu_pipe + andes_25_vpu_div*34")
+
+(define_insn_reservation "andes_25_vmask_2" 2
+ (eq_attr "type" "vmalu,vmsfs")
+ "andes_25_vpu_pipe + andes_25_vpu_msk")
+
+(define_insn_reservation "andes_25_vmask_3" 3
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "vmiota,vmidx"))
+ "andes_25_vpu_pipe + andes_25_vpu_msk")
+
+(define_insn_reservation "andes_25_vpopc" 6
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "vmpop"))
+ "andes_25_vpu_pipe + andes_25_vpu_msk")
+
+(define_insn_reservation "andes_25_vffs" 7
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "vmffs"))
+ "andes_25_vpu_pipe + andes_25_vpu_msk")
+
+(define_insn_reservation "andes_25_vfadd" 4
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "vfalu,vfwalu,vfmul,vfwmul,vfmuladd,\
+ vfwmuladd"))
+ "andes_25_vpu_pipe + andes_25_vpu_fmac")
+
+(define_insn_reservation "andes_25_vfdiv" 39
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "vfdiv,vfsqrt"))
+ "andes_25_vpu_pipe + andes_25_vpu_div*19")
+
+(define_insn_reservation "andes_25_vfmis" 2
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "vfminmax,vfcmp,vfsgnj,vfclass,vfmerge"))
+ "andes_25_vpu_pipe + andes_25_vpu_fmis")
+
+(define_insn_reservation "andes_25_vfrecp" 3
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "vfrecp"))
+ "andes_25_vpu_pipe + andes_25_vpu_div")
+
+(define_insn_reservation "andes_25_vfcvt" 2
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "vfcvtitof,vfcvtftoi"))
+ "andes_25_vpu_pipe + andes_25_vpu_fmis")
+
+(define_insn_reservation "andes_25_widen_vfcvt" 5
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "vfwcvtitof,vfwcvtftoi,vfwcvtftof,vfwcvtbf16"))
+ "andes_25_vpu_pipe + andes_25_vpu_fmis")
+
+(define_insn_reservation "andes_25_narrow_vfcvt" 4
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "vfncvtitof,vfncvtftoi,vfncvtftof,vfncvtbf16"))
+ "andes_25_vpu_pipe + andes_25_vpu_fmis")
+
+(define_insn_reservation "andes_25_vfreduction" 6
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "vfredu,vfwredu,vfredo,vfwredo"))
+ "andes_25_vpu_pipe + andes_25_vpu_fmac*24")
+
+(define_insn_reservation "andes_25_vesetvl" 1
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "vsetvl,vsetvl_pre"))
+ "andes_25_vpu_pipe")
+
+(define_insn_reservation "andes_25_vcsr" 1
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "wrvxrm,wrfrm,rdvlenb,rdvl"))
+ "andes_25_vpu_pipe")
+
+(define_insn_reservation "andes_25_unknown" 1
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "ghost,cpop,clz,ctz,zicond,mvpair,sfb_alu,minu,maxu,
+ min,max,clmul,rotate,crypto,condmove,rdfrm"))
+ "andes_25_dummies")
+
+(define_insn_reservation "andes_25_vector_unknown" 1
+ (and (eq_attr "tune" "andes_25_series")
+ (eq_attr "type" "vclz,vror,vsha2ch,vsm4k,vaesef,vghsh,vsm4r,vsm3c,
+ vaeskf1,vandn,vaesdm,vclmul,vclmulh,vrol,vcpop,vbrev8,
+ vsm3me,vbrev,vctz,vgmul,vsha2ms,vaesz,vrev8,
+ vaeskf2,vsha2cl,vwsll,vaesdf,vaesem,vfwmaccbf16,
+ sf_vqmacc,sf_vc,sf_vc_se,sf_vfnrclip"))
+ "andes_25_vector_dummies")
diff --git a/gcc/config/riscv/riscv-cores.def b/gcc/config/riscv/riscv-cores.def
index cc9d5c03cb8..19d27b8998f 100644
--- a/gcc/config/riscv/riscv-cores.def
+++ b/gcc/config/riscv/riscv-cores.def
@@ -53,6 +53,7 @@ RISCV_TUNE("xiangshan-kunminghu", xiangshan,
generic_ooo_tune_info)
RISCV_TUNE("generic-ooo", generic_ooo, generic_ooo_tune_info)
RISCV_TUNE("size", generic, optimize_size_tune_info)
RISCV_TUNE("mips-p8700", mips_p8700, mips_p8700_tune_info)
+RISCV_TUNE("andes-25-series", andes_25_series, andes_25_tune_info)
#undef RISCV_TUNE
@@ -171,4 +172,13 @@ RISCV_CORE("xiangshan-kunminghu",
"rv64imafdcbvh_sdtrig_sha_shcounterenw_"
RISCV_CORE("mips-p8700", "rv64imfd_zicsr_zifencei_zalrsc_zba_zbb",
"mips-p8700")
+
+RISCV_CORE("andes-n22", "rv32imc_zicsr_zifencei_xandesperf",
"andes-25-series")
+RISCV_CORE("andes-n25", "rv32imc_zicsr_zifencei_xandesperf",
"andes-25-series")
+RISCV_CORE("andes-a25", "rv32imafdc_zicsr_zifencei_xandesperf",
"andes-25-series")
+RISCV_CORE("andes-nx25", "rv64imc_zicsr_zifencei_xandesperf",
"andes-25-series")
+RISCV_CORE("andes-ax25", "rv64imafdc_zicsr_zifencei_xandesperf",
"andes-25-series")
+RISCV_CORE("andes-a27", "rv32imafdc_zicsr_zifencei_xandesperf",
"andes-25-series")
+RISCV_CORE("andes-ax27", "rv64imafdc_zicsr_zifencei_xandesperf",
"andes-25-series")
+
#undef RISCV_CORE
diff --git a/gcc/config/riscv/riscv-opts.h b/gcc/config/riscv/riscv-opts.h
index 4e4e9d8930e..95c032d33d2 100644
--- a/gcc/config/riscv/riscv-opts.h
+++ b/gcc/config/riscv/riscv-opts.h
@@ -61,6 +61,7 @@ enum riscv_microarchitecture_type {
generic_ooo,
mips_p8700,
tt_ascalon_d8,
+ andes_25_series,
};
extern enum riscv_microarchitecture_type riscv_microarchitecture;
diff --git a/gcc/config/riscv/riscv.cc b/gcc/config/riscv/riscv.cc
index 7d723fc4d69..1863922ae0c 100644
--- a/gcc/config/riscv/riscv.cc
+++ b/gcc/config/riscv/riscv.cc
@@ -735,6 +735,30 @@ static const struct riscv_tune_param mips_p8700_tune_info
= {
true, /* prefer-agnostic. */
};
+/* Costs to use when optimizing for Andes 25 series. */
+static const struct riscv_tune_param andes_25_tune_info = {
+ {COSTS_N_INSNS (4), COSTS_N_INSNS (5)}, /* fp_add */
+ {COSTS_N_INSNS (4), COSTS_N_INSNS (5)}, /* fp_mul */
+ {COSTS_N_INSNS (20), COSTS_N_INSNS (20)}, /* fp_div */
+ {COSTS_N_INSNS (2), COSTS_N_INSNS (2)}, /* int_mul */
+ {COSTS_N_INSNS (24), COSTS_N_INSNS (24)}, /* int_div */
+ 1, /* issue_rate */
+ 3, /* branch_cost */
+ 3, /* memory_cost */
+ 8, /* fmv_cost */
+ false, /* slow_unaligned_access */
+ false, /* vector_unaligned_access */
+ true, /* use_divmod_expansion
*/
+ false, /* overlap_op_by_pieces */
+ false, /* use_zero_stride_load */
+ false, /* speculative_sched_vsetvl */
+ RISCV_FUSE_NOTHING, /* fusible_ops */
+ NULL, /* vector cost */
+ NULL, /* function_align */
+ NULL, /* jump_align */
+ NULL, /* loop_align */
+};
+
static bool riscv_avoid_shrink_wrapping_separate ();
static tree riscv_handle_fndecl_attribute (tree *, tree, tree, int, bool *);
static tree riscv_handle_type_attribute (tree *, tree, tree, int, bool *);
diff --git a/gcc/config/riscv/riscv.md b/gcc/config/riscv/riscv.md
index 1ec15da2e77..d179f1f49c8 100644
--- a/gcc/config/riscv/riscv.md
+++ b/gcc/config/riscv/riscv.md
@@ -672,7 +672,8 @@
;; Microarchitectures we know how to tune for.
;; Keep this in sync with enum riscv_microarchitecture.
(define_attr "tune"
-
"generic,sifive_7,sifive_p400,sifive_p600,xiangshan,generic_ooo,mips_p8700,tt_ascalon_d8"
+ "generic,sifive_7,sifive_p400,sifive_p600,xiangshan,generic_ooo,mips_p8700,
+ tt_ascalon_d8,andes_25_series"
(const (symbol_ref "((enum attr_tune) riscv_microarchitecture)")))
;; Describe a user's asm statement.
@@ -5017,3 +5018,4 @@
(include "generic-vector-ooo.md")
(include "generic-ooo.md")
(include "tt-ascalon-d8.md")
+(include "andes-25-series.md")
diff --git a/gcc/doc/riscv-mcpu.texi b/gcc/doc/riscv-mcpu.texi
index 6753e510eb6..f79edfb837c 100644
--- a/gcc/doc/riscv-mcpu.texi
+++ b/gcc/doc/riscv-mcpu.texi
@@ -66,4 +66,18 @@ by particular CPU name. Permissible values for this option
are:
@samp{xiangshan-kunminghu},
-@samp{mips-p8700}.
+@samp{mips-p8700},
+
+@samp{andes-n22},
+
+@samp{andes-n25},
+
+@samp{andes-a25},
+
+@samp{andes-nx25},
+
+@samp{andes-ax25},
+
+@samp{andes-a27},
+
+@samp{andes-ax27}.
diff --git a/gcc/doc/riscv-mtune.texi b/gcc/doc/riscv-mtune.texi
index a2a4d3e77db..cf713670fd6 100644
--- a/gcc/doc/riscv-mtune.texi
+++ b/gcc/doc/riscv-mtune.texi
@@ -56,4 +56,6 @@ particular CPU name. Permissible values for this option are:
@samp{mips-p8700},
+@samp{andes-25-series},
+
and all valid options for @option{-mcpu=}.
--
2.34.1
