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+;; Scheduling description for IBM POWER6 processor.
+;;   Copyright (C) 2006, 2007 Free Software Foundation, Inc.
+;;   Contributed by Peter Steinmetz (steinmtz@us.ibm.com)
+;;
+;; 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/>.
+
+;; Sources:
+
+;; The POWER6 has 2 iu, 2 fpu, 2 lsu, and 1 bu/cru unit per engine 
+;; (2 engines per chip).  The chip can issue up to 5 internal ops 
+;; per cycle.
+
+(define_automaton "power6iu,power6lsu,power6fpu,power6bu")
+
+(define_cpu_unit "iu1_power6,iu2_power6" "power6iu")
+(define_cpu_unit "lsu1_power6,lsu2_power6" "power6lsu")
+(define_cpu_unit "bpu_power6" "power6bu")
+(define_cpu_unit "fpu1_power6,fpu2_power6" "power6fpu")
+
+(define_reservation "LS2_power6"
+                    "lsu1_power6+lsu2_power6")
+
+(define_reservation "FPU_power6"
+                    "fpu1_power6|fpu2_power6")
+
+(define_reservation "BRU_power6"
+                    "bpu_power6")
+
+(define_reservation "LSU_power6"
+                    "lsu1_power6|lsu2_power6")
+
+(define_reservation "LSF_power6"
+                    "(lsu1_power6+fpu1_power6)\
+                    |(lsu1_power6+fpu2_power6)\
+                    |(lsu2_power6+fpu1_power6)\
+                    |(lsu2_power6+fpu2_power6)")
+
+(define_reservation "LX2_power6"
+                    "(iu1_power6+iu2_power6+lsu1_power6)\
+                    |(iu1_power6+iu2_power6+lsu2_power6)")
+
+(define_reservation "FX2_power6"
+                    "iu1_power6+iu2_power6")
+
+(define_reservation "X2F_power6"
+                    "(iu1_power6+iu2_power6+fpu1_power6)\
+                    |(iu1_power6+iu2_power6+fpu2_power6)")
+
+(define_reservation "BX2_power6"
+                    "iu1_power6+iu2_power6+bpu_power6")
+
+(define_reservation "LSX_power6"
+                    "(iu1_power6+lsu1_power6)\
+                    |(iu1_power6+lsu2_power6)\
+                    |(iu2_power6+lsu1_power6)\
+                    |(iu2_power6+lsu2_power6)")
+
+(define_reservation "FXU_power6"
+                    "iu1_power6|iu2_power6")
+
+(define_reservation "XLF_power6"
+                    "(iu1_power6+lsu1_power6+fpu1_power6)\
+                    |(iu1_power6+lsu1_power6+fpu2_power6)\
+                    |(iu1_power6+lsu2_power6+fpu1_power6)\
+                    |(iu1_power6+lsu2_power6+fpu2_power6)\
+                    |(iu2_power6+lsu1_power6+fpu1_power6)\
+                    |(iu2_power6+lsu1_power6+fpu2_power6)\
+                    |(iu2_power6+lsu2_power6+fpu1_power6)\
+                    |(iu2_power6+lsu2_power6+fpu2_power6)")
+
+(define_reservation "BRX_power6"
+                    "(bpu_power6+iu1_power6)\
+                    |(bpu_power6+iu2_power6)")
+
+; Load/store
+
+; The default for a value written by a fixed point load
+; that is read/written by a subsequent fixed point op.
+(define_insn_reservation "power6-load" 2 ; fx
+  (and (eq_attr "type" "load")
+       (eq_attr "cpu" "power6"))
+  "LSU_power6")
+
+; define the bypass for the case where the value written
+; by a fixed point load is used as the source value on
+; a store.
+(define_bypass 1 "power6-load,\
+                  power6-load-update,\
+                  power6-load-update-indexed"
+                 "power6-store,\
+                  power6-store-update,\
+                  power6-store-update-indexed,\
+                  power6-fpstore,\
+                  power6-fpstore-update"
+  "store_data_bypass_p")
+
+(define_insn_reservation "power6-load-ext" 4 ; fx
+  (and (eq_attr "type" "load_ext")
+       (eq_attr "cpu" "power6"))
+  "LSU_power6")
+
+; define the bypass for the case where the value written
+; by a fixed point load ext is used as the source value on
+; a store.
+(define_bypass 1 "power6-load-ext,\
+                  power6-load-ext-update,\
+	          power6-load-ext-update-indexed"
+                 "power6-store,\
+                  power6-store-update,\
+                  power6-store-update-indexed,\
+                  power6-fpstore,\
+                  power6-fpstore-update"
+  "store_data_bypass_p")
+
+(define_insn_reservation "power6-load-update" 2 ; fx
+  (and (eq_attr "type" "load_u")
+       (eq_attr "cpu" "power6"))
+  "LSX_power6")
+
+(define_insn_reservation "power6-load-update-indexed" 2 ; fx
+  (and (eq_attr "type" "load_ux")
+       (eq_attr "cpu" "power6"))
+  "LSX_power6")
+
+(define_insn_reservation "power6-load-ext-update" 4 ; fx
+  (and (eq_attr "type" "load_ext_u")
+       (eq_attr "cpu" "power6"))
+  "LSX_power6")
+
+(define_insn_reservation "power6-load-ext-update-indexed" 4 ; fx
+  (and (eq_attr "type" "load_ext_ux")
+       (eq_attr "cpu" "power6"))
+  "LSX_power6")
+
+(define_insn_reservation "power6-fpload" 1
+  (and (eq_attr "type" "fpload")
+       (eq_attr "cpu" "power6"))
+  "LSU_power6")
+
+(define_insn_reservation "power6-fpload-update" 1
+  (and (eq_attr "type" "fpload_u,fpload_ux")
+       (eq_attr "cpu" "power6"))
+  "LSX_power6")
+
+(define_insn_reservation "power6-store" 14
+  (and (eq_attr "type" "store")
+       (eq_attr "cpu" "power6"))
+  "LSU_power6")
+
+(define_insn_reservation "power6-store-update" 14
+  (and (eq_attr "type" "store_u")
+       (eq_attr "cpu" "power6"))
+  "LSX_power6")
+
+(define_insn_reservation "power6-store-update-indexed" 14
+  (and (eq_attr "type" "store_ux")
+       (eq_attr "cpu" "power6"))
+  "LX2_power6")
+
+(define_insn_reservation "power6-fpstore" 14
+  (and (eq_attr "type" "fpstore")
+       (eq_attr "cpu" "power6"))
+  "LSF_power6")
+
+(define_insn_reservation "power6-fpstore-update" 14
+  (and (eq_attr "type" "fpstore_u,fpstore_ux")
+       (eq_attr "cpu" "power6"))
+  "XLF_power6")
+
+(define_insn_reservation "power6-larx" 3
+  (and (eq_attr "type" "load_l")
+       (eq_attr "cpu" "power6"))
+  "LS2_power6")
+
+(define_insn_reservation "power6-stcx" 10 ; best case
+  (and (eq_attr "type" "store_c")
+       (eq_attr "cpu" "power6"))
+  "LSX_power6")
+
+(define_insn_reservation "power6-sync" 11 ; N/A
+  (and (eq_attr "type" "sync")
+       (eq_attr "cpu" "power6"))
+  "LSU_power6")
+
+(define_insn_reservation "power6-integer" 1
+  (and (eq_attr "type" "integer")
+       (eq_attr "cpu" "power6"))
+  "FXU_power6")
+
+(define_insn_reservation "power6-exts" 1
+  (and (eq_attr "type" "exts")
+       (eq_attr "cpu" "power6"))
+  "FXU_power6")
+
+(define_insn_reservation "power6-shift" 1
+  (and (eq_attr "type" "shift")
+       (eq_attr "cpu" "power6"))
+  "FXU_power6")
+
+(define_insn_reservation "power6-insert" 1
+  (and (eq_attr "type" "insert_word")
+       (eq_attr "cpu" "power6"))
+  "FX2_power6")
+
+(define_insn_reservation "power6-insert-dword" 1
+  (and (eq_attr "type" "insert_dword")
+       (eq_attr "cpu" "power6"))
+  "FX2_power6")
+
+; define the bypass for the case where the value written
+; by a fixed point op is used as the source value on a
+; store.
+(define_bypass 1 "power6-integer,\
+                  power6-exts,\
+                  power6-shift,\
+                  power6-insert,\
+                  power6-insert-dword"
+                 "power6-store,\
+                  power6-store-update,\
+                  power6-store-update-indexed,\
+                  power6-fpstore,\
+                  power6-fpstore-update"
+  "store_data_bypass_p")
+
+(define_insn_reservation "power6-cntlz" 2
+  (and (eq_attr "type" "cntlz")
+       (eq_attr "cpu" "power6"))
+  "FXU_power6")
+
+(define_bypass 1 "power6-cntlz"
+                 "power6-store,\
+                  power6-store-update,\
+                  power6-store-update-indexed,\
+                  power6-fpstore,\
+                  power6-fpstore-update"
+  "store_data_bypass_p")
+
+(define_insn_reservation "power6-var-rotate" 4
+  (and (eq_attr "type" "var_shift_rotate")
+       (eq_attr "cpu" "power6"))
+  "FXU_power6")
+
+(define_insn_reservation "power6-trap" 1 ; N/A
+  (and (eq_attr "type" "trap")
+       (eq_attr "cpu" "power6"))
+  "BRX_power6")
+
+(define_insn_reservation "power6-two" 1
+  (and (eq_attr "type" "two")
+       (eq_attr "cpu" "power6"))
+  "(iu1_power6,iu1_power6)\
+  |(iu1_power6+iu2_power6,nothing)\
+  |(iu1_power6,iu2_power6)\
+  |(iu2_power6,iu1_power6)\
+  |(iu2_power6,iu2_power6)")
+
+(define_insn_reservation "power6-three" 1
+  (and (eq_attr "type" "three")
+       (eq_attr "cpu" "power6"))
+  "(iu1_power6,iu1_power6,iu1_power6)\
+  |(iu1_power6,iu1_power6,iu2_power6)\
+  |(iu1_power6,iu2_power6,iu1_power6)\
+  |(iu1_power6,iu2_power6,iu2_power6)\
+  |(iu2_power6,iu1_power6,iu1_power6)\
+  |(iu2_power6,iu1_power6,iu2_power6)\
+  |(iu2_power6,iu2_power6,iu1_power6)\
+  |(iu2_power6,iu2_power6,iu2_power6)\
+  |(iu1_power6+iu2_power6,iu1_power6)\
+  |(iu1_power6+iu2_power6,iu2_power6)\
+  |(iu1_power6,iu1_power6+iu2_power6)\
+  |(iu2_power6,iu1_power6+iu2_power6)")
+
+(define_insn_reservation "power6-cmp" 1
+  (and (eq_attr "type" "cmp")
+       (eq_attr "cpu" "power6"))
+  "FXU_power6")
+
+(define_insn_reservation "power6-compare" 1
+  (and (eq_attr "type" "compare")
+       (eq_attr "cpu" "power6"))
+  "FXU_power6")
+
+(define_insn_reservation "power6-fast-compare" 1
+  (and (eq_attr "type" "fast_compare")
+       (eq_attr "cpu" "power6"))
+  "FXU_power6")
+
+; define the bypass for the case where the value written
+; by a fixed point rec form op is used as the source value
+; on a store.
+(define_bypass 1 "power6-compare,\
+                  power6-fast-compare"
+                 "power6-store,\
+                  power6-store-update,\
+                  power6-store-update-indexed,\
+                  power6-fpstore,\
+                  power6-fpstore-update"
+  "store_data_bypass_p")
+
+(define_insn_reservation "power6-delayed-compare" 2 ; N/A
+  (and (eq_attr "type" "delayed_compare")
+       (eq_attr "cpu" "power6"))
+  "FXU_power6")
+
+(define_insn_reservation "power6-var-delayed-compare" 4
+  (and (eq_attr "type" "var_delayed_compare")
+       (eq_attr "cpu" "power6"))
+  "FXU_power6")
+
+(define_insn_reservation "power6-lmul-cmp" 16
+  (and (eq_attr "type" "lmul_compare")
+       (eq_attr "cpu" "power6"))
+  "(iu1_power6*16+iu2_power6*16+fpu1_power6*16)\
+  |(iu1_power6*16+iu2_power6*16+fpu2_power6*16)");
+
+(define_insn_reservation "power6-imul-cmp" 16
+  (and (eq_attr "type" "imul_compare")
+       (eq_attr "cpu" "power6"))
+  "(iu1_power6*16+iu2_power6*16+fpu1_power6*16)\
+  |(iu1_power6*16+iu2_power6*16+fpu2_power6*16)");
+
+(define_insn_reservation "power6-lmul" 16
+  (and (eq_attr "type" "lmul")
+       (eq_attr "cpu" "power6"))
+  "(iu1_power6*16+iu2_power6*16+fpu1_power6*16)\
+  |(iu1_power6*16+iu2_power6*16+fpu2_power6*16)");
+
+(define_insn_reservation "power6-imul" 16
+  (and (eq_attr "type" "imul")
+       (eq_attr "cpu" "power6"))
+  "(iu1_power6*16+iu2_power6*16+fpu1_power6*16)\
+  |(iu1_power6*16+iu2_power6*16+fpu2_power6*16)");
+
+(define_insn_reservation "power6-imul3" 16
+  (and (eq_attr "type" "imul2,imul3")
+       (eq_attr "cpu" "power6"))
+  "(iu1_power6*16+iu2_power6*16+fpu1_power6*16)\
+  |(iu1_power6*16+iu2_power6*16+fpu2_power6*16)");
+
+(define_bypass 9 "power6-imul,\
+                  power6-lmul,\
+                  power6-imul-cmp,\
+                  power6-lmul-cmp,\
+                  power6-imul3"
+                 "power6-store,\
+                  power6-store-update,\
+                  power6-store-update-indexed,\
+                  power6-fpstore,\
+                  power6-fpstore-update"
+  "store_data_bypass_p")
+
+(define_insn_reservation "power6-idiv" 44
+  (and (eq_attr "type" "idiv")
+       (eq_attr "cpu" "power6"))
+  "(iu1_power6*44+iu2_power6*44+fpu1_power6*44)\
+  |(iu1_power6*44+iu2_power6*44+fpu2_power6*44)");
+
+; The latency for this bypass is yet to be defined
+;(define_bypass ? "power6-idiv"
+;                 "power6-store,\
+;                  power6-store-update,\
+;                  power6-store-update-indexed,\
+;                  power6-fpstore,\
+;                  power6-fpstore-update"
+;  "store_data_bypass_p")
+
+(define_insn_reservation "power6-ldiv" 56
+  (and (eq_attr "type" "ldiv")
+       (eq_attr "cpu" "power6"))
+  "(iu1_power6*56+iu2_power6*56+fpu1_power6*56)\
+  |(iu1_power6*56+iu2_power6*56+fpu2_power6*56)");
+
+; The latency for this bypass is yet to be defined
+;(define_bypass ? "power6-ldiv"
+;                 "power6-store,\
+;                  power6-store-update,\
+;                  power6-store-update-indexed,\
+;                  power6-fpstore,\
+;                  power6-fpstore-update"
+;  "store_data_bypass_p")
+
+(define_insn_reservation "power6-mtjmpr" 2
+  (and (eq_attr "type" "mtjmpr,mfjmpr")
+       (eq_attr "cpu" "power6"))
+  "BX2_power6")
+
+(define_bypass 5 "power6-mtjmpr" "power6-branch")
+
+(define_insn_reservation "power6-branch" 2
+  (and (eq_attr "type" "jmpreg,branch")
+       (eq_attr "cpu" "power6"))
+  "BRU_power6")
+
+(define_bypass 5 "power6-branch" "power6-mtjmpr")
+
+(define_insn_reservation "power6-crlogical" 3
+  (and (eq_attr "type" "cr_logical")
+       (eq_attr "cpu" "power6"))
+  "BRU_power6")
+
+(define_bypass 3 "power6-crlogical" "power6-branch")
+
+(define_insn_reservation "power6-delayedcr" 3
+  (and (eq_attr "type" "delayed_cr")
+       (eq_attr "cpu" "power6"))
+  "BRU_power6")
+
+(define_insn_reservation "power6-mfcr" 6 ; N/A
+  (and (eq_attr "type" "mfcr")
+       (eq_attr "cpu" "power6"))
+  "BX2_power6")
+
+; mfcrf (1 field)
+(define_insn_reservation "power6-mfcrf" 3 ; N/A
+  (and (eq_attr "type" "mfcrf")
+       (eq_attr "cpu" "power6"))
+  "BX2_power6") ;
+
+; mtcrf (1 field)
+(define_insn_reservation "power6-mtcr" 4 ; N/A
+  (and (eq_attr "type" "mtcr")
+       (eq_attr "cpu" "power6"))
+  "BX2_power6")
+
+(define_bypass 9 "power6-mtcr" "power6-branch")
+
+(define_insn_reservation "power6-fp" 6
+  (and (eq_attr "type" "fp,dmul")
+       (eq_attr "cpu" "power6"))
+  "FPU_power6")
+
+; Any fp instruction that updates a CR has a latency
+; of 6 to a dependent branch
+(define_bypass 6 "power6-fp" "power6-branch")
+
+(define_bypass 1 "power6-fp"
+                 "power6-fpstore,power6-fpstore-update"
+  "store_data_bypass_p")
+
+(define_insn_reservation "power6-fpcompare" 8
+  (and (eq_attr "type" "fpcompare")
+       (eq_attr "cpu" "power6"))
+  "FPU_power6")
+
+(define_bypass 12 "power6-fpcompare"
+                  "power6-branch,power6-crlogical")
+
+(define_insn_reservation "power6-sdiv" 26
+  (and (eq_attr "type" "sdiv")
+       (eq_attr "cpu" "power6"))
+  "FPU_power6")
+
+(define_insn_reservation "power6-ddiv" 32
+  (and (eq_attr "type" "ddiv")
+       (eq_attr "cpu" "power6"))
+  "FPU_power6")
+
+(define_insn_reservation "power6-sqrt" 30
+  (and (eq_attr "type" "ssqrt")
+       (eq_attr "cpu" "power6"))
+  "FPU_power6")
+
+(define_insn_reservation "power6-dsqrt" 42
+  (and (eq_attr "type" "dsqrt")
+       (eq_attr "cpu" "power6"))
+  "FPU_power6")
+
+(define_insn_reservation "power6-isync" 2 ; N/A 
+  (and (eq_attr "type" "isync")
+       (eq_attr "cpu" "power6"))
+  "FXU_power6")
+
+(define_insn_reservation "power6-vecload" 1
+  (and (eq_attr "type" "vecload")
+       (eq_attr "cpu" "power6"))
+  "LSU_power6")
+
+(define_insn_reservation "power6-vecstore" 1
+  (and (eq_attr "type" "vecstore")
+       (eq_attr "cpu" "power6"))
+  "LSF_power6")
+
+(define_insn_reservation "power6-vecsimple" 3
+  (and (eq_attr "type" "vecsimple")
+       (eq_attr "cpu" "power6"))
+  "FPU_power6")
+
+(define_bypass 6 "power6-vecsimple" "power6-veccomplex,\
+                                     power6-vecperm")
+
+(define_bypass 5 "power6-vecsimple" "power6-vecfloat")
+
+(define_bypass 4 "power6-vecsimple" "power6-vecstore" )
+
+(define_insn_reservation "power6-veccmp" 1
+  (and (eq_attr "type" "veccmp")
+       (eq_attr "cpu" "power6"))
+  "FPU_power6")
+
+(define_bypass 10 "power6-veccmp" "power6-branch")
+
+(define_insn_reservation "power6-vecfloat" 7
+  (and (eq_attr "type" "vecfloat")
+       (eq_attr "cpu" "power6"))
+  "FPU_power6")
+
+(define_bypass 10 "power6-vecfloat" "power6-vecsimple")
+
+(define_bypass 11 "power6-vecfloat" "power6-veccomplex,\
+                                     power6-vecperm")
+
+(define_bypass 9 "power6-vecfloat" "power6-vecstore" )
+
+(define_insn_reservation "power6-veccomplex" 7
+  (and (eq_attr "type" "vecsimple")
+       (eq_attr "cpu" "power6"))
+  "FPU_power6")
+
+(define_bypass 10 "power6-veccomplex" "power6-vecsimple,\
+                                       power6-vecfloat" )
+
+(define_bypass 9 "power6-veccomplex" "power6-vecperm" )
+
+(define_bypass 8 "power6-veccomplex" "power6-vecstore" )
+
+(define_insn_reservation "power6-vecperm" 4
+  (and (eq_attr "type" "vecperm")
+       (eq_attr "cpu" "power6"))
+  "FPU_power6")
+
+(define_bypass 7 "power6-vecperm" "power6-vecsimple,\
+                                   power6-vecfloat" )
+
+(define_bypass 6 "power6-vecperm" "power6-veccomplex" )
+
+(define_bypass 5 "power6-vecperm" "power6-vecstore" )
+
+(define_insn_reservation "power6-mftgpr" 8
+  (and (eq_attr "type" "mftgpr")
+       (eq_attr "cpu" "power6"))
+  "X2F_power6")
+
+(define_insn_reservation "power6-mffgpr" 14
+  (and (eq_attr "type" "mffgpr")
+       (eq_attr "cpu" "power6"))
+  "LX2_power6")
+
+(define_bypass 4 "power6-mftgpr" "power6-imul,\
+                                  power6-lmul,\
+                                  power6-imul-cmp,\
+                                  power6-lmul-cmp,\
+                                  power6-imul3,\
+                                  power6-idiv,\
+                                  power6-ldiv" )