[NDS32] Implment n15 pipeline.

gcc/
	* config.gcc (nds32*-*-*): Check that n15 is valid to --with-cpu.
	* config/nds32/nds32-graywolf.md: New file.
	* config/nds32/nds32-opts.h (nds32_cpu_type): Add CPU_GRAYWOLF.
	* config/nds32/nds32-pipelines-auxiliary.c: Implementation for n15
	pipeline.
	* config/nds32/nds32-protos.h: More declarations for n15 pipeline.
	* config/nds32/nds32-utils.c: More implementations for n15 pipeline.
	* config/nds32/nds32.md (pipeline_model): Add graywolf.
	* config/nds32/nds32.opt (mcpu): Support n15 pipeline cpus.
	* config/nds32/pipelines.md: Include n15 settings.

Co-Authored-By: Chung-Ju Wu <jasonwucj@gmail.com>

From-SVN: r260214

10 files changed, 781 insertions, 9 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 9fdc345..4901cb1 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,6 +1,20 @@
 2018-05-13  Kito Cheng  <kito.cheng@gmail.com>
 	    Chung-Ju Wu  <jasonwucj@gmail.com>
 
+	* config.gcc (nds32*-*-*): Check that n15 is valid to --with-cpu.
+	* config/nds32/nds32-graywolf.md: New file.
+	* config/nds32/nds32-opts.h (nds32_cpu_type): Add CPU_GRAYWOLF.
+	* config/nds32/nds32-pipelines-auxiliary.c: Implementation for n15
+	pipeline.
+	* config/nds32/nds32-protos.h: More declarations for n15 pipeline.
+	* config/nds32/nds32-utils.c: More implementations for n15 pipeline.
+	* config/nds32/nds32.md (pipeline_model): Add graywolf.
+	* config/nds32/nds32.opt (mcpu): Support n15 pipeline cpus.
+	* config/nds32/pipelines.md: Include n15 settings.
+
+2018-05-13  Kito Cheng  <kito.cheng@gmail.com>
+	    Chung-Ju Wu  <jasonwucj@gmail.com>
+
 	* config.gcc (nds32*-*-*): Check that n12/n13 are valid to --with-cpu.
 	* config/nds32/nds32-n13.md: New file.
 	* config/nds32/nds32-opts.h (nds32_cpu_type): Add CPU_N12 and CPU_N13.
diff --git a/gcc/config.gcc b/gcc/config.gcc
index c8eda1d..be43a09 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -4367,11 +4367,11 @@ case "${target}" in
 		"")
 			with_cpu=n9
 			;;
-		n6 | n7 |n8 | e8 | s8 | n9 | n10 | d10 | n12 | n13)
+		n6 | n7 |n8 | e8 | s8 | n9 | n10 | d10 | n12 | n13 | n15)
 			# OK
 			;;
 		*)
-			echo "Cannot accept --with-cpu=$with_cpu, available values are: n6 n7 n8 e8 s8 n9 n10 d10 n12 n13" 1>&2
+			echo "Cannot accept --with-cpu=$with_cpu, available values are: n6 n7 n8 e8 s8 n9 n10 d10 n12 n13 n15" 1>&2
 			exit 1
 			;;
 		esac
diff --git a/gcc/config/nds32/nds32-graywolf.md b/gcc/config/nds32/nds32-graywolf.md
new file mode 100644
index 0000000..f0c98a6
--- /dev/null
+++ b/gcc/config/nds32/nds32-graywolf.md
@@ -0,0 +1,471 @@
+;; Pipeline descriptions of Andes NDS32 cpu for GNU compiler
+;; Copyright (C) 2012-2013 Free Software Foundation, Inc.
+;; Contributed by Andes Technology Corporation.
+;;
+;; 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 Graywolf pipeline settings.
+;; ------------------------------------------------------------------------
+
+(define_automaton "nds32_graywolf_machine")
+
+(define_cpu_unit "gw_ii_0" "nds32_graywolf_machine")
+(define_cpu_unit "gw_ii_1" "nds32_graywolf_machine")
+(define_cpu_unit "gw_ex_p0" "nds32_graywolf_machine")
+(define_cpu_unit "gw_mm_p0" "nds32_graywolf_machine")
+(define_cpu_unit "gw_wb_p0" "nds32_graywolf_machine")
+(define_cpu_unit "gw_ex_p1" "nds32_graywolf_machine")
+(define_cpu_unit "gw_mm_p1" "nds32_graywolf_machine")
+(define_cpu_unit "gw_wb_p1" "nds32_graywolf_machine")
+(define_cpu_unit "gw_iq_p2" "nds32_graywolf_machine")
+(define_cpu_unit "gw_rf_p2" "nds32_graywolf_machine")
+(define_cpu_unit "gw_e1_p2" "nds32_graywolf_machine")
+(define_cpu_unit "gw_e2_p2" "nds32_graywolf_machine")
+(define_cpu_unit "gw_e3_p2" "nds32_graywolf_machine")
+(define_cpu_unit "gw_e4_p2" "nds32_graywolf_machine")
+
+(define_reservation "gw_ii" "gw_ii_0 | gw_ii_1")
+(define_reservation "gw_ex" "gw_ex_p0 | gw_ex_p1")
+(define_reservation "gw_mm" "gw_mm_p0 | gw_mm_p1")
+(define_reservation "gw_wb" "gw_wb_p0 | gw_wb_p1")
+
+(define_reservation "gw_ii_all" "gw_ii_0 + gw_ii_1")
+
+(define_insn_reservation "nds_gw_unknown" 1
+  (and (eq_attr "type" "unknown")
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii, gw_ex, gw_mm, gw_wb")
+
+(define_insn_reservation "nds_gw_misc" 1
+  (and (eq_attr "type" "misc")
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii, gw_ex, gw_mm, gw_wb")
+
+(define_insn_reservation "nds_gw_mmu" 1
+  (and (eq_attr "type" "mmu")
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii, gw_ex, gw_mm, gw_wb")
+
+(define_insn_reservation "nds_gw_alu" 1
+  (and (and (eq_attr "type" "alu")
+            (match_test "!nds32::movd44_insn_p (insn)"))
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii, gw_ex, gw_mm, gw_wb")
+
+(define_insn_reservation "nds_gw_movd44" 1
+  (and (and (eq_attr "type" "alu")
+            (match_test "nds32::movd44_insn_p (insn)"))
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii_1, gw_ex, gw_mm, gw_wb")
+
+(define_insn_reservation "nds_gw_alu_shift" 1
+  (and (eq_attr "type" "alu_shift")
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii, gw_ex*2, gw_mm, gw_wb")
+
+(define_insn_reservation "nds_gw_pbsad" 1
+  (and (eq_attr "type" "pbsad")
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii, gw_ex*3, gw_mm, gw_wb")
+
+(define_insn_reservation "nds_gw_pbsada" 1
+  (and (eq_attr "type" "pbsada")
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii, gw_ex*3, gw_mm, gw_wb")
+
+(define_insn_reservation "nds_gw_load" 1
+  (and (and (eq_attr "type" "load")
+            (match_test "!nds32::post_update_insn_p (insn)"))
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii_1, gw_ex_p1, gw_mm_p1, gw_wb_p1")
+
+(define_insn_reservation "nds_gw_load_2w" 1
+  (and (and (eq_attr "type" "load")
+            (match_test "nds32::post_update_insn_p (insn)"))
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii_all, gw_ex_p1, gw_mm_p1, gw_wb_p1")
+
+(define_insn_reservation "nds_gw_store" 1
+  (and (and (eq_attr "type" "store")
+            (match_test "!nds32::store_offset_reg_p (insn)"))
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii_1, gw_ex_p1, gw_mm_p1, gw_wb_p1")
+
+(define_insn_reservation "nds_gw_store_3r" 1
+  (and (and (eq_attr "type" "store")
+            (match_test "nds32::store_offset_reg_p (insn)"))
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii_all, gw_ex_p1, gw_mm_p1, gw_wb_p1")
+
+(define_insn_reservation "nds_gw_load_multiple_1" 1
+  (and (and (eq_attr "type" "load_multiple")
+            (eq_attr "combo" "1"))
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii_1, gw_ex_p1, gw_mm_p1, gw_wb_p1")
+
+(define_insn_reservation "nds_gw_load_multiple_2" 1
+  (and (and (eq_attr "type" "load_multiple")
+            (eq_attr "combo" "2"))
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii_1, gw_ex_p1*2, gw_mm_p1, gw_wb_p1")
+
+(define_insn_reservation "nds_gw_load_multiple_3" 1
+  (and (and (eq_attr "type" "load_multiple")
+            (eq_attr "combo" "3"))
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii_1, gw_ex_p1*3, gw_mm_p1, gw_wb_p1")
+
+(define_insn_reservation "nds_gw_load_multiple_4" 1
+  (and (and (eq_attr "type" "load_multiple")
+            (eq_attr "combo" "4"))
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii_1, gw_ex_p1*4, gw_mm_p1, gw_wb_p1")
+
+(define_insn_reservation "nds_gw_load_multiple_5" 1
+  (and (and (eq_attr "type" "load_multiple")
+            (eq_attr "combo" "5"))
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii_1, gw_ex_p1*4, gw_mm_p1, gw_wb_p1")
+
+(define_insn_reservation "nds_gw_load_multiple_6" 1
+  (and (and (eq_attr "type" "load_multiple")
+            (eq_attr "combo" "6"))
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii_1, gw_ex_p1*4, gw_mm_p1, gw_wb_p1")
+
+(define_insn_reservation "nds_gw_load_multiple_7" 1
+  (and (and (eq_attr "type" "load_multiple")
+            (eq_attr "combo" "7"))
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii_1, gw_ex_p1*4, gw_mm_p1, gw_wb_p1")
+
+(define_insn_reservation "nds_gw_load_multiple_8" 1
+  (and (and (eq_attr "type" "load_multiple")
+            (eq_attr "combo" "8"))
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii_1, gw_ex_p1*4, gw_mm_p1, gw_wb_p1")
+
+(define_insn_reservation "nds_gw_load_multiple_12" 1
+  (and (and (eq_attr "type" "load_multiple")
+            (eq_attr "combo" "12"))
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii_1, gw_ex_p1*4, gw_mm_p1, gw_wb_p1")
+
+(define_insn_reservation "nds_gw_store_multiple_1" 1
+  (and (and (eq_attr "type" "store_multiple")
+            (eq_attr "combo" "1"))
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii_1, gw_ex_p1, gw_mm_p1, gw_wb_p1")
+
+(define_insn_reservation "nds_gw_store_multiple_2" 1
+  (and (and (eq_attr "type" "store_multiple")
+            (eq_attr "combo" "2"))
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii_1, gw_ex_p1*2, gw_mm_p1, gw_wb_p1")
+
+(define_insn_reservation "nds_gw_store_multiple_3" 1
+  (and (and (eq_attr "type" "store_multiple")
+            (eq_attr "combo" "3"))
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii_1, gw_ex_p1*3, gw_mm_p1, gw_wb_p1")
+
+(define_insn_reservation "nds_gw_store_multiple_4" 1
+  (and (and (eq_attr "type" "store_multiple")
+            (eq_attr "combo" "4"))
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii_1, gw_ex_p1*4, gw_mm_p1, gw_wb_p1")
+
+(define_insn_reservation "nds_gw_store_multiple_5" 1
+  (and (and (eq_attr "type" "store_multiple")
+            (eq_attr "combo" "5"))
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii_1, gw_ex_p1*4, gw_mm_p1, gw_wb_p1")
+
+(define_insn_reservation "nds_gw_store_multiple_6" 1
+  (and (and (eq_attr "type" "store_multiple")
+            (eq_attr "combo" "6"))
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii_1, gw_ex_p1*4, gw_mm_p1, gw_wb_p1")
+
+(define_insn_reservation "nds_gw_store_multiple_7" 1
+  (and (and (eq_attr "type" "store_multiple")
+            (eq_attr "combo" "7"))
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii_1, gw_ex_p1*4, gw_mm_p1, gw_wb_p1")
+
+(define_insn_reservation "nds_gw_store_multiple_8" 1
+  (and (and (eq_attr "type" "store_multiple")
+            (eq_attr "combo" "8"))
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii_1, gw_ex_p1*4, gw_mm_p1, gw_wb_p1")
+
+(define_insn_reservation "nds_gw_store_multiple_12" 1
+  (and (and (eq_attr "type" "store_multiple")
+            (eq_attr "combo" "12"))
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii_1, gw_ex_p1*4, gw_mm_p1, gw_wb_p1")
+
+(define_insn_reservation "nds_gw_mul_fast1" 1
+  (and (match_test "nds32_mul_config == MUL_TYPE_FAST_1")
+       (and (eq_attr "type" "mul")
+       (eq_attr "pipeline_model" "graywolf")))
+  "gw_ii_0, gw_ex_p0, gw_mm_p0, gw_wb_p0")
+
+(define_insn_reservation "nds_gw_mul_fast2" 1
+  (and (match_test "nds32_mul_config == MUL_TYPE_FAST_2")
+       (and (eq_attr "type" "mul")
+       (eq_attr "pipeline_model" "graywolf")))
+  "gw_ii_0, gw_ex_p0*2, gw_mm_p0, gw_wb_p0")
+
+(define_insn_reservation "nds_gw_mul_slow" 1
+  (and (match_test "nds32_mul_config == MUL_TYPE_SLOW")
+       (and (eq_attr "type" "mul")
+       (eq_attr "pipeline_model" "graywolf")))
+  "gw_ii_0, gw_ex_p0*4, gw_mm_p0, gw_wb_p0")
+
+(define_insn_reservation "nds_gw_mac_fast1" 1
+  (and (match_test "nds32_mul_config == MUL_TYPE_FAST_1")
+       (and (eq_attr "type" "mac")
+       (eq_attr "pipeline_model" "graywolf")))
+  "gw_ii_all, gw_ex_p0, gw_mm_p0, gw_wb_p0")
+
+(define_insn_reservation "nds_gw_mac_fast2" 1
+  (and (match_test "nds32_mul_config == MUL_TYPE_FAST_2")
+       (and (eq_attr "type" "mac")
+       (eq_attr "pipeline_model" "graywolf")))
+  "gw_ii_all, gw_ex_p0*2, gw_mm_p0, gw_wb_p0")
+
+(define_insn_reservation "nds_gw_mac_slow" 1
+  (and (match_test "nds32_mul_config == MUL_TYPE_SLOW")
+       (and (eq_attr "type" "mac")
+       (eq_attr "pipeline_model" "graywolf")))
+  "gw_ii_all, gw_ex_p0*4, gw_mm_p0, gw_wb_p0")
+
+(define_insn_reservation "nds_gw_div" 1
+  (and (and (eq_attr "type" "div")
+            (match_test "!nds32::divmod_p (insn)"))
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii_0, gw_ex_p0*4, gw_mm_p0, gw_wb_p0")
+
+(define_insn_reservation "nds_gw_div_2w" 1
+  (and (and (eq_attr "type" "div")
+            (match_test "nds32::divmod_p (insn)"))
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii_all, gw_ex_p0*4, gw_mm_p0, gw_wb_p0")
+
+(define_insn_reservation "nds_gw_branch" 1
+  (and (eq_attr "type" "branch")
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii_0, gw_ex_p0, gw_mm_p0, gw_wb_p0")
+
+(define_insn_reservation "nds_gw_dsp_alu" 1
+  (and (eq_attr "type" "dalu")
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii, gw_ex, gw_mm, gw_wb")
+
+(define_insn_reservation "nds_gw_dsp_alu64" 1
+  (and (eq_attr "type" "dalu64")
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii_all, gw_ex_p0, gw_mm_p0, gw_wb_p0")
+
+(define_insn_reservation "nds_gw_dsp_alu_round" 1
+  (and (eq_attr "type" "daluround")
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii_0, gw_ex_p0, gw_mm_p0, gw_wb_p0")
+
+(define_insn_reservation "nds_gw_dsp_cmp" 1
+  (and (eq_attr "type" "dcmp")
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii_0, gw_ex_p0, gw_mm_p0, gw_wb_p0")
+
+(define_insn_reservation "nds_gw_dsp_clip" 1
+  (and (eq_attr "type" "dclip")
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii_0, gw_ex_p0, gw_mm_p0, gw_wb_p0")
+
+(define_insn_reservation "nds_gw_dsp_mul" 1
+  (and (eq_attr "type" "dmul")
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii_0, gw_ex_p0, gw_mm_p0, gw_wb_p0")
+
+(define_insn_reservation "nds_gw_dsp_mac" 1
+  (and (eq_attr "type" "dmac")
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii_all, gw_ex_p0, gw_mm_p0, gw_wb_p0")
+
+(define_insn_reservation "nds_gw_dsp_insb" 1
+  (and (eq_attr "type" "dinsb")
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii_0, gw_ex_p0, gw_mm_p0, gw_wb_p0")
+
+(define_insn_reservation "nds_gw_dsp_pack" 1
+  (and (eq_attr "type" "dpack")
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii_0, gw_ex_p0, gw_mm_p0, gw_wb_p0")
+
+(define_insn_reservation "nds_gw_dsp_bpick" 1
+  (and (eq_attr "type" "dbpick")
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii_0, gw_ex_p0, gw_mm_p0, gw_wb_p0")
+
+(define_insn_reservation "nds_gw_dsp_wext" 1
+  (and (eq_attr "type" "dwext")
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii_all, gw_ex_p0, gw_mm_p0, gw_wb_p0")
+
+(define_insn_reservation "nds_gw_fpu_alu" 4
+  (and (eq_attr "type" "falu")
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii, gw_iq_p2, gw_rf_p2, gw_e1_p2, gw_e2_p2, gw_e3_p2, gw_e4_p2")
+
+(define_insn_reservation "nds_gw_fpu_muls" 4
+  (and (eq_attr "type" "fmuls")
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii, gw_iq_p2, gw_rf_p2, gw_e1_p2, gw_e2_p2, gw_e3_p2, gw_e4_p2")
+
+(define_insn_reservation "nds_gw_fpu_muld" 4
+  (and (eq_attr "type" "fmuld")
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii, gw_iq_p2, gw_rf_p2, gw_e1_p2, gw_e2_p2*2, gw_e3_p2, gw_e4_p2")
+
+(define_insn_reservation "nds_gw_fpu_macs" 4
+  (and (eq_attr "type" "fmacs")
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii, gw_iq_p2, gw_rf_p2, gw_e1_p2, gw_e2_p2*3, gw_e3_p2, gw_e4_p2")
+
+(define_insn_reservation "nds_gw_fpu_macd" 4
+  (and (eq_attr "type" "fmacd")
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii, gw_iq_p2, gw_rf_p2, gw_e1_p2, gw_e2_p2*4, gw_e3_p2, gw_e4_p2")
+
+(define_insn_reservation "nds_gw_fpu_divs" 4
+  (and (ior (eq_attr "type" "fdivs")
+	    (eq_attr "type" "fsqrts"))
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii, gw_iq_p2, gw_rf_p2, gw_e1_p2, gw_e2_p2*14, gw_e3_p2, gw_e4_p2")
+
+(define_insn_reservation "nds_gw_fpu_divd" 4
+  (and (ior (eq_attr "type" "fdivd")
+	    (eq_attr "type" "fsqrtd"))
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii, gw_iq_p2, gw_rf_p2, gw_e1_p2, gw_e2_p2*28, gw_e3_p2, gw_e4_p2")
+
+(define_insn_reservation "nds_gw_fpu_fast_alu" 2
+  (and (ior (eq_attr "type" "fcmp")
+	    (ior (eq_attr "type" "fabs")
+		 (ior (eq_attr "type" "fcpy")
+		      (eq_attr "type" "fcmov"))))
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii, gw_iq_p2, gw_rf_p2, gw_e1_p2, gw_e2_p2, gw_e3_p2, gw_e4_p2")
+
+(define_insn_reservation "nds_gw_fpu_fmtsr" 1
+  (and (eq_attr "type" "fmtsr")
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii, gw_iq_p2, gw_rf_p2, gw_e1_p2, gw_e2_p2, gw_e3_p2, gw_e4_p2")
+
+(define_insn_reservation "nds_gw_fpu_fmtdr" 1
+  (and (eq_attr "type" "fmtdr")
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii, gw_ii+gw_iq_p2, gw_iq_p2+gw_rf_p2, gw_rf_p2+gw_e1_p2, gw_e1_p2+gw_e2_p2, gw_e2_p2+gw_e3_p2, gw_e3_p2+gw_e4_p2, gw_e4_p2")
+
+(define_insn_reservation "nds_gw_fpu_fmfsr" 1
+  (and (eq_attr "type" "fmfsr")
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii, gw_iq_p2, gw_rf_p2, gw_e1_p2, gw_e2_p2, gw_e3_p2, gw_e4_p2")
+
+(define_insn_reservation "nds_gw_fpu_fmfdr" 1
+  (and (eq_attr "type" "fmfdr")
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii, gw_ii+gw_iq_p2, gw_iq_p2+gw_rf_p2, gw_rf_p2+gw_e1_p2, gw_e1_p2+gw_e2_p2, gw_e2_p2+gw_e3_p2, gw_e3_p2+gw_e4_p2, gw_e4_p2")
+
+(define_insn_reservation "nds_gw_fpu_load" 3
+  (and (eq_attr "type" "fload")
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii, gw_iq_p2, gw_rf_p2, gw_e1_p2, gw_e2_p2, gw_e3_p2, gw_e4_p2")
+
+(define_insn_reservation "nds_gw_fpu_store" 1
+  (and (eq_attr "type" "fstore")
+       (eq_attr "pipeline_model" "graywolf"))
+  "gw_ii, gw_iq_p2, gw_rf_p2, gw_e1_p2, gw_e2_p2, gw_e3_p2, gw_e4_p2")
+
+;; FPU_ADDR_OUT -> FPU_ADDR_IN
+;; Main pipeline rules don't need this because those default latency is 1.
+(define_bypass 1
+  "nds_gw_fpu_load, nds_gw_fpu_store"
+  "nds_gw_fpu_load, nds_gw_fpu_store"
+  "nds32_gw_ex_to_ex_p"
+)
+
+;; LD, MUL, MAC, DIV, DALU64, DMUL, DMAC, DALUROUND, DBPICK, DWEXT
+;;   -> ALU, ALU_SHIFT_Rb, PBSAD, PBSADA_RaRb, MOVD44, MUL, MAC_RaRb, DIV, ADDR_IN, BR, MMU,
+;;      DALU, DALUROUND, DMUL, DMAC_RaRb, DPACK, DINSB, DCMP, DCLIP, WEXT_O, BPICK_RaRb
+(define_bypass 2
+  "nds_gw_load, nds_gw_load_2w,\
+   nds_gw_mul_fast1, nds_gw_mul_fast2, nds_gw_mul_slow,\
+   nds_gw_mac_fast1, nds_gw_mac_fast2, nds_gw_mac_slow,\
+   nds_gw_div, nds_gw_div_2w,\
+   nds_gw_dsp_alu64, nds_gw_dsp_mul, nds_gw_dsp_mac,\
+   nds_gw_dsp_alu_round, nds_gw_dsp_bpick, nds_gw_dsp_wext"
+  "nds_gw_alu, nds_gw_movd44, nds_gw_alu_shift,\
+   nds_gw_pbsad, nds_gw_pbsada,\
+   nds_gw_mul_fast1, nds_gw_mul_fast2, nds_gw_mul_slow,\
+   nds_gw_mac_fast1, nds_gw_mac_fast2, nds_gw_mac_slow,\
+   nds_gw_branch,\
+   nds_gw_div, nds_gw_div_2w,\
+   nds_gw_load, nds_gw_load_2w, nds_gw_store, nds_gw_store_3r,\
+   nds_gw_load_multiple_1,nds_gw_load_multiple_2, nds_gw_load_multiple_3,\
+   nds_gw_load_multiple_4,nds_gw_load_multiple_5, nds_gw_load_multiple_6,\
+   nds_gw_load_multiple_7,nds_gw_load_multiple_8, nds_gw_load_multiple_12,\
+   nds_gw_store_multiple_1,nds_gw_store_multiple_2, nds_gw_store_multiple_3,\
+   nds_gw_store_multiple_4,nds_gw_store_multiple_5, nds_gw_store_multiple_6,\
+   nds_gw_store_multiple_7,nds_gw_store_multiple_8, nds_gw_store_multiple_12,\
+   nds_gw_mmu,\
+   nds_gw_dsp_alu, nds_gw_dsp_alu_round,\
+   nds_gw_dsp_mul, nds_gw_dsp_mac, nds_gw_dsp_pack,\
+   nds_gw_dsp_insb, nds_gw_dsp_cmp, nds_gw_dsp_clip,\
+   nds_gw_dsp_wext, nds_gw_dsp_bpick"
+  "nds32_gw_mm_to_ex_p"
+)
+
+;; LMW(N, N)
+;;   -> ALU, ALU_SHIFT_Rb, PBSAD, PBSADA_RaRb, MOVD44, MUL, MAC_RaRb, DIV, ADDR_IN, BR, MMU
+;;      DALU, DALUROUND, DMUL, DMAC_RaRb, DPACK, DINSB, DCMP, DCLIP, WEXT_O, BPICK_RaRb
+(define_bypass 2
+  "nds_gw_load_multiple_1,nds_gw_load_multiple_2, nds_gw_load_multiple_3,\
+   nds_gw_load_multiple_4,nds_gw_load_multiple_5, nds_gw_load_multiple_6,\
+   nds_gw_load_multiple_7,nds_gw_load_multiple_8, nds_gw_load_multiple_12"
+  "nds_gw_alu, nds_gw_movd44, nds_gw_alu_shift,\
+   nds_gw_pbsad, nds_gw_pbsada,\
+   nds_gw_mul_fast1, nds_gw_mul_fast2, nds_gw_mul_slow,\
+   nds_gw_mac_fast1, nds_gw_mac_fast2, nds_gw_mac_slow,\
+   nds_gw_branch,\
+   nds_gw_div, nds_gw_div_2w,\
+   nds_gw_load, nds_gw_load_2w, nds_gw_store, nds_gw_store_3r,\
+   nds_gw_load_multiple_1,nds_gw_load_multiple_2, nds_gw_load_multiple_3,\
+   nds_gw_load_multiple_4,nds_gw_load_multiple_5, nds_gw_load_multiple_6,\
+   nds_gw_load_multiple_7,nds_gw_load_multiple_8, nds_gw_load_multiple_12,\
+   nds_gw_store_multiple_1,nds_gw_store_multiple_2, nds_gw_store_multiple_3,\
+   nds_gw_store_multiple_4,nds_gw_store_multiple_5, nds_gw_store_multiple_6,\
+   nds_gw_store_multiple_7,nds_gw_store_multiple_8, nds_gw_store_multiple_12,\
+   nds_gw_mmu,\
+   nds_gw_dsp_alu, nds_gw_dsp_alu_round,\
+   nds_gw_dsp_mul, nds_gw_dsp_mac, nds_gw_dsp_pack,\
+   nds_gw_dsp_insb, nds_gw_dsp_cmp, nds_gw_dsp_clip,\
+   nds_gw_dsp_wext, nds_gw_dsp_bpick"
+  "nds32_gw_last_load_to_ex_p"
+)
diff --git a/gcc/config/nds32/nds32-opts.h b/gcc/config/nds32/nds32-opts.h
index 3c853e4..e040065 100644
--- a/gcc/config/nds32/nds32-opts.h
+++ b/gcc/config/nds32/nds32-opts.h
@@ -43,6 +43,7 @@ enum nds32_cpu_type
   CPU_E8,
   CPU_N9,
   CPU_N10,
+  CPU_GRAYWOLF,
   CPU_N12,
   CPU_N13,
   CPU_SIMPLE
diff --git a/gcc/config/nds32/nds32-pipelines-auxiliary.c b/gcc/config/nds32/nds32-pipelines-auxiliary.c
index 560137c..53619d2 100644
--- a/gcc/config/nds32/nds32-pipelines-auxiliary.c
+++ b/gcc/config/nds32/nds32-pipelines-auxiliary.c
@@ -931,6 +931,88 @@ n10_consumed_by_ex_dep_p (rtx_insn *consumer, rtx def_reg)
   return false;
 }
 
+/* Check the dependency between the producer defining DEF_REG and CONSUMER
+   requiring input operand at EX.  */
+bool
+gw_consumed_by_ex_dep_p (rtx_insn *consumer, rtx def_reg)
+{
+  rtx use_rtx;
+
+  switch (get_attr_type (consumer))
+    {
+    case TYPE_ALU:
+    case TYPE_PBSAD:
+    case TYPE_MUL:
+    case TYPE_DALU:
+    case TYPE_DALU64:
+    case TYPE_DMUL:
+    case TYPE_DPACK:
+    case TYPE_DINSB:
+    case TYPE_DCMP:
+    case TYPE_DCLIP:
+    case TYPE_DALUROUND:
+      use_rtx = SET_SRC (PATTERN (consumer));
+      break;
+
+    case TYPE_ALU_SHIFT:
+      use_rtx = extract_shift_reg (consumer);
+      break;
+
+    case TYPE_PBSADA:
+      return pbsada_insn_ra_rb_dep_reg_p (consumer, def_reg);
+
+    case TYPE_MAC:
+    case TYPE_DMAC:
+      use_rtx = extract_mac_non_acc_rtx (consumer);
+      break;
+
+   /* Some special instructions, divmodsi4 and udivmodsi4, produce two
+      results, the quotient and the remainder.  We have to check the
+      dependency from the producer to the first micro-operation.  */
+    case TYPE_DIV:
+      if (divmod_p (consumer))
+	use_rtx = SET_SRC (parallel_element (consumer, 0));
+      else
+	use_rtx = SET_SRC (PATTERN (consumer));
+      break;
+
+    case TYPE_DWEXT:
+      return wext_odd_dep_p (consumer, def_reg);
+
+    case TYPE_DBPICK:
+      return bpick_ra_rb_dep_p (consumer, def_reg);
+
+    case TYPE_MMU:
+      if (GET_CODE (PATTERN (consumer)) == SET)
+	use_rtx = SET_SRC (PATTERN (consumer));
+      else
+	return true;
+      break;
+
+    case TYPE_LOAD:
+    case TYPE_STORE:
+      use_rtx = extract_mem_rtx (consumer);
+      break;
+
+    case TYPE_LOAD_MULTIPLE:
+    case TYPE_STORE_MULTIPLE:
+      use_rtx = extract_base_reg (consumer);
+      break;
+
+    case TYPE_BRANCH:
+      use_rtx = PATTERN (consumer);
+      break;
+
+    default:
+      gcc_unreachable ();
+    }
+
+  if (reg_overlap_p (def_reg, use_rtx))
+    return true;
+
+  return false;
+}
+
 /* Check dependencies from any stages to ALU_E1 (E1).  This is a helper
    function of n13_consumed_by_e1_dep_p ().  */
 bool
@@ -1532,6 +1614,67 @@ nds32_n10_last_load_to_ex_p (rtx_insn *producer, rtx_insn *consumer)
   return n10_consumed_by_ex_dep_p (consumer, last_def_reg);
 }
 
+/* Guard functions for Graywolf cores.  */
+
+/* Check dependencies from EX to EX (ADDR_OUT -> ADDR_IN).  */
+bool
+nds32_gw_ex_to_ex_p (rtx_insn *producer, rtx_insn *consumer)
+{
+  return nds32_n10_ex_to_ex_p (producer, consumer);
+}
+
+/* Check dependencies from MM to EX.  */
+bool
+nds32_gw_mm_to_ex_p (rtx_insn *producer, rtx_insn *consumer)
+{
+  rtx def_reg;
+
+  switch (get_attr_type (producer))
+    {
+    case TYPE_LOAD:
+    case TYPE_MUL:
+    case TYPE_MAC:
+    case TYPE_DALU64:
+    case TYPE_DMUL:
+    case TYPE_DMAC:
+    case TYPE_DALUROUND:
+    case TYPE_DBPICK:
+    case TYPE_DWEXT:
+      def_reg = SET_DEST (PATTERN (producer));
+      break;
+
+   /* Some special instructions, divmodsi4 and udivmodsi4, produce two
+      results, the quotient and the remainder.  We have to handle them
+      individually.  */
+    case TYPE_DIV:
+      if (divmod_p (producer))
+	{
+	  rtx def_reg1 = SET_DEST (parallel_element (producer, 0));
+	  rtx def_reg2 = SET_DEST (parallel_element (producer, 1));
+
+	  return (gw_consumed_by_ex_dep_p (consumer, def_reg1)
+		  || gw_consumed_by_ex_dep_p (consumer, def_reg2));
+	}
+
+      def_reg = SET_DEST (PATTERN (producer));
+      break;
+
+    default:
+      gcc_unreachable ();
+    }
+
+    return gw_consumed_by_ex_dep_p (consumer, def_reg);
+}
+
+/* Check dependencies from LMW(N, N) to EX.  */
+bool
+nds32_gw_last_load_to_ex_p (rtx_insn *producer, rtx_insn *consumer)
+{
+  rtx last_def_reg = extract_nth_access_reg (producer, -1);
+
+  return gw_consumed_by_ex_dep_p (consumer, last_def_reg);
+}
+
 /* Guard functions for N12/N13 cores.  */
 
 /* Check dependencies from E2 to E1.  */
diff --git a/gcc/config/nds32/nds32-protos.h b/gcc/config/nds32/nds32-protos.h
index 9debad3..a7d679e 100644
--- a/gcc/config/nds32/nds32-protos.h
+++ b/gcc/config/nds32/nds32-protos.h
@@ -125,6 +125,10 @@ extern bool nds32_n10_ex_to_ex_p (rtx_insn *, rtx_insn *);
 extern bool nds32_n10_mm_to_ex_p (rtx_insn *, rtx_insn *);
 extern bool nds32_n10_last_load_to_ex_p (rtx_insn *, rtx_insn *);
 
+extern bool nds32_gw_ex_to_ex_p (rtx_insn *, rtx_insn *);
+extern bool nds32_gw_mm_to_ex_p (rtx_insn *, rtx_insn *);
+extern bool nds32_gw_last_load_to_ex_p (rtx_insn *, rtx_insn *);
+
 extern bool nds32_n13_e2_to_e1_p (rtx_insn *, rtx_insn *);
 extern bool nds32_n13_load_to_e1_p (rtx_insn *, rtx_insn *);
 extern bool nds32_n13_load_to_e2_p (rtx_insn *, rtx_insn *);
@@ -297,11 +301,13 @@ bool load_single_p (rtx_insn *);
 bool store_single_p (rtx_insn *);
 bool load_double_p (rtx_insn *);
 bool store_double_p (rtx_insn *);
+bool store_offset_reg_p (rtx_insn *);
 bool post_update_insn_p (rtx_insn *);
 bool immed_offset_p (rtx);
 int find_post_update_rtx (rtx_insn *);
 rtx extract_mem_rtx (rtx_insn *);
 rtx extract_base_reg (rtx_insn *);
+rtx extract_offset_rtx (rtx_insn *);
 
 rtx extract_shift_reg (rtx);
 
diff --git a/gcc/config/nds32/nds32-utils.c b/gcc/config/nds32/nds32-utils.c
index 6c93774..7c93cd2 100644
--- a/gcc/config/nds32/nds32-utils.c
+++ b/gcc/config/nds32/nds32-utils.c
@@ -142,6 +142,23 @@ store_double_p (rtx_insn *insn)
   return true;
 }
 
+bool
+store_offset_reg_p (rtx_insn *insn)
+{
+  if (get_attr_type (insn) != TYPE_STORE)
+    return false;
+
+  rtx offset_rtx = extract_offset_rtx (insn);
+
+  if (offset_rtx == NULL_RTX)
+    return false;
+
+  if (REG_P (offset_rtx))
+    return true;
+
+  return false;
+}
+
 /* Determine if INSN is a post update insn.  */
 bool
 post_update_insn_p (rtx_insn *insn)
@@ -316,22 +333,114 @@ extract_base_reg (rtx_insn *insn)
   if (REG_P (XEXP (mem_rtx, 0)))
     return XEXP (mem_rtx, 0);
 
+  /* (mem (lo_sum (reg) (symbol_ref)) */
+  if (GET_CODE (XEXP (mem_rtx, 0)) == LO_SUM)
+    return XEXP (XEXP (mem_rtx, 0), 0);
+
   plus_rtx = XEXP (mem_rtx, 0);
 
   if (GET_CODE (plus_rtx) == SYMBOL_REF
       || GET_CODE (plus_rtx) == CONST)
     return NULL_RTX;
 
-  gcc_assert (GET_CODE (plus_rtx) == PLUS
-	      || GET_CODE (plus_rtx) == POST_INC
-	      || GET_CODE (plus_rtx) == POST_DEC
-	      || GET_CODE (plus_rtx) == POST_MODIFY);
-  gcc_assert (REG_P (XEXP (plus_rtx, 0)));
   /* (mem (plus (reg) (const_int))) or
+     (mem (plus (mult (reg) (const_int 4)) (reg))) or
      (mem (post_inc (reg))) or
      (mem (post_dec (reg))) or
      (mem (post_modify (reg) (plus (reg) (reg))))  */
-  return XEXP (plus_rtx, 0);
+  gcc_assert (GET_CODE (plus_rtx) == PLUS
+	      || GET_CODE (plus_rtx) == POST_INC
+	      || GET_CODE (plus_rtx) == POST_DEC
+	      || GET_CODE (plus_rtx) == POST_MODIFY);
+
+  if (REG_P (XEXP (plus_rtx, 0)))
+    return XEXP (plus_rtx, 0);
+
+  gcc_assert (REG_P (XEXP (plus_rtx, 1)));
+  return XEXP (plus_rtx, 1);
+}
+
+/* Extract the offset rtx from load/store insns.  The function returns
+   NULL_RTX if offset is absent.  */
+rtx
+extract_offset_rtx (rtx_insn *insn)
+{
+  rtx mem_rtx;
+  rtx plus_rtx;
+  rtx offset_rtx;
+
+  /* Find the MEM rtx.  The multiple load/store insns doens't have
+     the offset field so we can return NULL_RTX here.  */
+  switch (get_attr_type (insn))
+    {
+    case TYPE_LOAD_MULTIPLE:
+    case TYPE_STORE_MULTIPLE:
+      return NULL_RTX;
+
+    case TYPE_LOAD:
+    case TYPE_FLOAD:
+    case TYPE_STORE:
+    case TYPE_FSTORE:
+      mem_rtx = extract_mem_rtx (insn);
+      break;
+
+    default:
+      gcc_unreachable ();
+    }
+
+  gcc_assert (MEM_P (mem_rtx));
+
+  /* (mem (reg))  */
+  if (REG_P (XEXP (mem_rtx, 0)))
+    return NULL_RTX;
+
+  plus_rtx = XEXP (mem_rtx, 0);
+
+  switch (GET_CODE (plus_rtx))
+    {
+    case SYMBOL_REF:
+    case CONST:
+    case POST_INC:
+    case POST_DEC:
+      return NULL_RTX;
+
+    case PLUS:
+      /* (mem (plus (reg) (const_int))) or
+         (mem (plus (mult (reg) (const_int 4)) (reg))) */
+      if (REG_P (XEXP (plus_rtx, 0)))
+        offset_rtx = XEXP (plus_rtx, 1);
+      else
+	{
+	  gcc_assert (REG_P (XEXP (plus_rtx, 1)));
+	  offset_rtx = XEXP (plus_rtx, 0);
+	}
+
+      if (ARITHMETIC_P (offset_rtx))
+	{
+	  gcc_assert (GET_CODE (offset_rtx) == MULT);
+	  gcc_assert (REG_P (XEXP (offset_rtx, 0)));
+	  offset_rtx = XEXP (offset_rtx, 0);
+	}
+      break;
+
+    case LO_SUM:
+      /* (mem (lo_sum (reg) (symbol_ref)) */
+      offset_rtx = XEXP (plus_rtx, 1);
+      break;
+
+    case POST_MODIFY:
+      /* (mem (post_modify (reg) (plus (reg) (reg / const_int)))) */
+      gcc_assert (REG_P (XEXP (plus_rtx, 0)));
+      plus_rtx = XEXP (plus_rtx, 1);
+      gcc_assert (GET_CODE (plus_rtx) == PLUS);
+      offset_rtx = XEXP (plus_rtx, 0);
+      break;
+
+    default:
+      gcc_unreachable ();
+    }
+
+  return offset_rtx;
 }
 
 /* Extract the register of the shift operand from an ALU_SHIFT rtx.  */
diff --git a/gcc/config/nds32/nds32.md b/gcc/config/nds32/nds32.md
index 0c1f301..6379212 100644
--- a/gcc/config/nds32/nds32.md
+++ b/gcc/config/nds32/nds32.md
@@ -56,13 +56,14 @@
 ;; ------------------------------------------------------------------------
 
 ;; CPU pipeline model.
-(define_attr "pipeline_model" "n7,n8,e8,n9,n10,n13,simple"
+(define_attr "pipeline_model" "n7,n8,e8,n9,n10,graywolf,n13,simple"
   (const
     (cond [(match_test "nds32_cpu_option == CPU_N7")  (const_string "n7")
 	   (match_test "nds32_cpu_option == CPU_E8")  (const_string "e8")
 	   (match_test "nds32_cpu_option == CPU_N6 || nds32_cpu_option == CPU_N8")  (const_string "n8")
 	   (match_test "nds32_cpu_option == CPU_N9")  (const_string "n9")
 	   (match_test "nds32_cpu_option == CPU_N10") (const_string "n10")
+	   (match_test "nds32_cpu_option == CPU_GRAYWOLF") (const_string "graywolf")
 	   (match_test "nds32_cpu_option == CPU_N12") (const_string "n13")
 	   (match_test "nds32_cpu_option == CPU_N13") (const_string "n13")
 	   (match_test "nds32_cpu_option == CPU_SIMPLE") (const_string "simple")]
diff --git a/gcc/config/nds32/nds32.opt b/gcc/config/nds32/nds32.opt
index f69bddc..f1c1bf9 100644
--- a/gcc/config/nds32/nds32.opt
+++ b/gcc/config/nds32/nds32.opt
@@ -288,6 +288,27 @@ EnumValue
 Enum(nds32_cpu_type) String(d1088-spu) Value(CPU_N10)
 
 EnumValue
+Enum(nds32_cpu_type) Undocumented String(graywolf) Value(CPU_GRAYWOLF)
+
+EnumValue
+Enum(nds32_cpu_type) String(n15) Value(CPU_GRAYWOLF)
+
+EnumValue
+Enum(nds32_cpu_type) String(d15) Value(CPU_GRAYWOLF)
+
+EnumValue
+Enum(nds32_cpu_type) String(n15s) Value(CPU_GRAYWOLF)
+
+EnumValue
+Enum(nds32_cpu_type) String(d15s) Value(CPU_GRAYWOLF)
+
+EnumValue
+Enum(nds32_cpu_type) String(n15f) Value(CPU_GRAYWOLF)
+
+EnumValue
+Enum(nds32_cpu_type) String(d15f) Value(CPU_GRAYWOLF)
+
+EnumValue
 Enum(nds32_cpu_type) String(n12) Value(CPU_N12)
 
 EnumValue
diff --git a/gcc/config/nds32/pipelines.md b/gcc/config/nds32/pipelines.md
index 29514ae..12cd262 100644
--- a/gcc/config/nds32/pipelines.md
+++ b/gcc/config/nds32/pipelines.md
@@ -50,6 +50,12 @@
 
 
 ;; ------------------------------------------------------------------------
+;; Include Graywolf pipeline settings.
+;; ------------------------------------------------------------------------
+(include "nds32-graywolf.md")
+
+
+;; ------------------------------------------------------------------------
 ;; Include N12/N13 pipeline settings.
 ;; ------------------------------------------------------------------------
 (include "nds32-n13.md")