freebsd-dev/contrib/gcc/config/rs6000/power4.md

;; Scheduling description for IBM Power4 and PowerPC 970 processors. ;; Copyright (C) 2003 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 2, 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 COPYING. If not, write to the ;; Free Software Foundation, 59 Temple Place - Suite 330, Boston, ;; MA 02111-1307, USA.

;; Sources: IBM Red Book and White Paper on POWER4

;; The POWER4 has 2 iu, 2 fpu, 2 lsu per engine (2 engines per chip). ;; Instructions that update more than one register get broken into two ;; (split) or more internal ops. The chip can issue up to 5 ;; internal ops per cycle.

(define_automaton "power4iu,power4fpu,power4vec,power4misc")

(define_cpu_unit "iu1_power4,iu2_power4" "power4iu") (define_cpu_unit "lsu1_power4,lsu2_power4" "power4misc") (define_cpu_unit "fpu1_power4,fpu2_power4" "power4fpu") (define_cpu_unit "bpu_power4,cru_power4" "power4misc") (define_cpu_unit "vec_power4,vecperm_power4" "power4vec") (define_cpu_unit "du1_power4,du2_power4,du3_power4,du4_power4,du5_power4" "power4misc")

(define_reservation "lsq_power4" "(du1_power4,lsu1_power4)
|(du2_power4,lsu2_power4)
|(du3_power4,nothing,lsu2_power4)
|(du4_power4,nothing,lsu1_power4)")

(define_reservation "lsuq_power4" "(du1_power4+du2_power4,lsu1_power4+iu2_power4)
|(du2_power4+du3_power4,lsu2_power4+iu2_power4)
|(du3_power4+du4_power4,lsu2_power4+iu1_power4)") ; |(du2_power4+du3_power4,nothing,lsu2_power4,iu2_power4)

(define_reservation "iq_power4" "(du1_power4,iu1_power4)
|(du2_power4,iu2_power4)
|(du3_power4,nothing,iu2_power4)
|(du4_power4,nothing,iu1_power4)")

(define_reservation "fpq_power4" "(du1_power4,fpu1_power4)
|(du2_power4,fpu2_power4)
|(du3_power4,nothing,fpu2_power4)
|(du4_power4,nothing,fpu1_power4)")

(define_reservation "vq_power4" "(du1_power4,vec_power4)
|(du2_power4,vec_power4)
|(du3_power4,nothing,vec_power4)
|(du4_power4,nothing,vec_power4)")

(define_reservation "vpq_power4" "(du1_power4,vecperm_power4)
|(du2_power4,vecperm_power4)
|(du3_power4,nothing,vecperm_power4)
|(du4_power4,nothing,vecperm_power4)")

; Dispatch slots are allocated in order conforming to program order. (absence_set "du1_power4" "du2_power4,du3_power4,du4_power4,du5_power4") (absence_set "du2_power4" "du3_power4,du4_power4,du5_power4") (absence_set "du3_power4" "du4_power4,du5_power4") (absence_set "du4_power4" "du5_power4")

; Load/store (define_insn_reservation "power4-load" 4 ; 3 (and (eq_attr "type" "load") (eq_attr "cpu" "power4")) "lsq_power4")

(define_insn_reservation "power4-load-ext" 5 (and (eq_attr "type" "load_ext") (eq_attr "cpu" "power4")) "(du1_power4+du2_power4,lsu1_power4,nothing,nothing,iu2_power4)
|(du2_power4+du3_power4,lsu2_power4,nothing,nothing,iu2_power4)
|(du3_power4+du4_power4,lsu2_power4,nothing,nothing,iu1_power4)")

(define_insn_reservation "power4-load-ext-update" 5 (and (eq_attr "type" "load_ext_u") (eq_attr "cpu" "power4")) "du1_power4+du2_power4+du3_power4+du4_power4,
lsu1_power4+iu2_power4,nothing,nothing,iu2_power4")

(define_insn_reservation "power4-load-ext-update-indexed" 5 (and (eq_attr "type" "load_ext_ux") (eq_attr "cpu" "power4")) "du1_power4+du2_power4+du3_power4+du4_power4,
iu1_power4,lsu2_power4+iu1_power4,nothing,nothing,iu2_power4")

(define_insn_reservation "power4-load-update-indexed" 3 (and (eq_attr "type" "load_ux") (eq_attr "cpu" "power4")) "du1_power4+du2_power4+du3_power4+du4_power4,
iu1_power4,lsu2_power4+iu2_power4")

(define_insn_reservation "power4-load-update" 4 ; 3 (and (eq_attr "type" "load_u") (eq_attr "cpu" "power4")) "lsuq_power4")

(define_insn_reservation "power4-fpload" 6 ; 5 (and (eq_attr "type" "fpload") (eq_attr "cpu" "power4")) "lsq_power4")

(define_insn_reservation "power4-fpload-update" 6 ; 5 (and (eq_attr "type" "fpload_u,fpload_ux") (eq_attr "cpu" "power4")) "lsuq_power4")

(define_insn_reservation "power4-vecload" 6 ; 5 (and (eq_attr "type" "vecload") (eq_attr "cpu" "power4")) "lsq_power4")

(define_insn_reservation "power4-store" 1 (and (eq_attr "type" "store") (eq_attr "cpu" "power4")) "(du1_power4,lsu1_power4,iu1_power4)
|(du2_power4,lsu2_power4,iu2_power4)
|(du3_power4,lsu2_power4,nothing,iu2_power4)
|(du4_power4,lsu1_power4,nothing,iu1_power4)")

(define_insn_reservation "power4-store-update" 1 (and (eq_attr "type" "store_u") (eq_attr "cpu" "power4")) "(du1_power4+du2_power4,lsu1_power4+iu2_power4,iu1_power4)
|(du2_power4+du3_power4,lsu2_power4+iu2_power4,iu2_power4)
|(du3_power4+du4_power4,lsu2_power4+iu1_power4,iu2_power4)
|(du3_power4+du4_power4,lsu2_power4,iu1_power4,iu2_power4)")

(define_insn_reservation "power4-store-update-indexed" 1 (and (eq_attr "type" "store_ux") (eq_attr "cpu" "power4")) "du1_power4+du2_power4+du3_power4+du4_power4,
iu1_power4,lsu2_power4+iu2_power4,iu2_power4")

(define_insn_reservation "power4-fpstore" 1 (and (eq_attr "type" "fpstore") (eq_attr "cpu" "power4")) "(du1_power4,lsu1_power4,fpu1_power4)
|(du2_power4,lsu2_power4,fpu2_power4)
|(du3_power4,lsu2_power4,nothing,fpu2_power4)
|(du4_power4,lsu1_power4,nothing,fpu1_power4)")

(define_insn_reservation "power4-fpstore-update" 1 (and (eq_attr "type" "fpstore_u,fpstore_ux") (eq_attr "cpu" "power4")) "(du1_power4+du2_power4,lsu1_power4+iu2_power4,fpu1_power4)
|(du2_power4+du3_power4,lsu2_power4+iu2_power4,fpu2_power4)
|(du3_power4+du4_power4,lsu2_power4+iu1_power4,fpu2_power4)") ; |(du3_power4+du4_power4,nothing,lsu2_power4+iu1_power4,fpu2_power4)")

(define_insn_reservation "power4-vecstore" 1 (and (eq_attr "type" "vecstore") (eq_attr "cpu" "power4")) "(du1_power4,lsu1_power4,vec_power4)
|(du2_power4,lsu2_power4,vec_power4)
|(du3_power4,lsu2_power4,nothing,vec_power4)
|(du4_power4,lsu1_power4,nothing,vec_power4)")

; Integer latency is 2 cycles (define_insn_reservation "power4-integer" 2 (and (eq_attr "type" "integer") (eq_attr "cpu" "power4")) "iq_power4")

(define_insn_reservation "power4-insert" 4 (and (eq_attr "type" "insert_word") (eq_attr "cpu" "power4")) "(du1_power4+du2_power4,iu1_power4,nothing,iu2_power4)
|(du2_power4+du3_power4,iu2_power4,nothing,iu2_power4)
|(du3_power4+du4_power4,iu2_power4,nothing,iu1_power4)")

(define_insn_reservation "power4-cmp" 3 (and (eq_attr "type" "cmp,fast_compare") (eq_attr "cpu" "power4")) "iq_power4")

(define_insn_reservation "power4-compare" 2 (and (eq_attr "type" "compare,delayed_compare") (eq_attr "cpu" "power4")) "(du1_power4+du2_power4,iu1_power4,iu2_power4)
|(du2_power4+du3_power4,iu2_power4,iu2_power4)
|(du3_power4+du4_power4,nothing,iu2_power4,iu1_power4)")

(define_bypass 4 "power4-compare" "power4-branch,power4-crlogical,power4-delayedcr,power4-mfcr,power4-mfcrf")

(define_insn_reservation "power4-lmul-cmp" 7 (and (eq_attr "type" "lmul_compare") (eq_attr "cpu" "power4")) "(du1_power4+du2_power4,iu1_power46,iu2_power4)
|(du2_power4+du3_power4,iu2_power46,iu2_power4)
|(du3_power4+du4_power4,iu2_power46,iu1_power4)") ; |(du3_power4+du4_power4,nothing,iu2_power46,iu1_power4)")

(define_bypass 10 "power4-lmul-cmp" "power4-branch,power4-crlogical,power4-delayedcr,power4-mfcr,power4-mfcrf")

(define_insn_reservation "power4-imul-cmp" 5 (and (eq_attr "type" "imul_compare") (eq_attr "cpu" "power4")) "(du1_power4+du2_power4,iu1_power44,iu2_power4)
|(du2_power4+du3_power4,iu2_power44,iu2_power4)
|(du3_power4+du4_power4,iu2_power44,iu1_power4)") ; |(du3_power4+du4_power4,nothing,iu2_power44,iu1_power4)")

(define_bypass 8 "power4-imul-cmp" "power4-branch,power4-crlogical,power4-delayedcr,power4-mfcr,power4-mfcrf")

(define_insn_reservation "power4-lmul" 7 (and (eq_attr "type" "lmul") (eq_attr "cpu" "power4")) "(du1_power4,iu1_power46)
|(du2_power4,iu2_power46)
|(du3_power4,iu2_power46)
|(du4_power4,iu2_power46)") ; |(du3_power4,nothing,iu2_power46)
; |(du4_power4,nothing,iu2_power46)")

(define_insn_reservation "power4-imul" 5 (and (eq_attr "type" "imul") (eq_attr "cpu" "power4")) "(du1_power4,iu1_power44)
|(du2_power4,iu2_power44)
|(du3_power4,iu2_power44)
|(du4_power4,iu1_power44)") ; |(du3_power4,nothing,iu2_power44)
; |(du4_power4,nothing,iu1_power44)")

(define_insn_reservation "power4-imul3" 4 (and (eq_attr "type" "imul2,imul3") (eq_attr "cpu" "power4")) "(du1_power4,iu1_power43)
|(du2_power4,iu2_power43)
|(du3_power4,iu2_power43)
|(du4_power4,iu1_power43)") ; |(du3_power4,nothing,iu2_power43)
; |(du4_power4,nothing,iu1_power43)")

; SPR move only executes in first IU. ; Integer division only executes in second IU. (define_insn_reservation "power4-idiv" 36 (and (eq_attr "type" "idiv") (eq_attr "cpu" "power4")) "du1_power4+du2_power4,iu2_power4*35")

(define_insn_reservation "power4-ldiv" 68 (and (eq_attr "type" "ldiv") (eq_attr "cpu" "power4")) "du1_power4+du2_power4,iu2_power4*67")

(define_insn_reservation "power4-mtjmpr" 3 (and (eq_attr "type" "mtjmpr,mfjmpr") (eq_attr "cpu" "power4")) "du1_power4,bpu_power4")

; Branches take dispatch Slot 4. The presence_sets prevent other insn from ; grabbing previous dispatch slots once this is assigned. (define_insn_reservation "power4-branch" 2 (and (eq_attr "type" "jmpreg,branch") (eq_attr "cpu" "power4")) "(du5_power4
|du4_power4+du5_power4
|du3_power4+du4_power4+du5_power4
|du2_power4+du3_power4+du4_power4+du5_power4
|du1_power4+du2_power4+du3_power4+du4_power4+du5_power4),bpu_power4")

; Condition Register logical ops are split if non-destructive (RT != RB) (define_insn_reservation "power4-crlogical" 2 (and (eq_attr "type" "cr_logical") (eq_attr "cpu" "power4")) "du1_power4,cru_power4")

(define_insn_reservation "power4-delayedcr" 4 (and (eq_attr "type" "delayed_cr") (eq_attr "cpu" "power4")) "du1_power4+du2_power4,cru_power4,cru_power4")

; 4 mfcrf (each 3 cyc, 1/cyc) + 3 fxu (define_insn_reservation "power4-mfcr" 6 (and (eq_attr "type" "mfcr") (eq_attr "cpu" "power4")) "du1_power4+du2_power4+du3_power4+du4_power4,
du1_power4+du2_power4+du3_power4+du4_power4+cru_power4,
cru_power4,cru_power4,cru_power4")

; mfcrf (1 field) (define_insn_reservation "power4-mfcrf" 3 (and (eq_attr "type" "mfcrf") (eq_attr "cpu" "power4")) "du1_power4,cru_power4")

; mtcrf (1 field) (define_insn_reservation "power4-mtcr" 4 (and (eq_attr "type" "mtcr") (eq_attr "cpu" "power4")) "du1_power4,iu1_power4")

; Basic FP latency is 6 cycles (define_insn_reservation "power4-fp" 6 (and (eq_attr "type" "fp,dmul") (eq_attr "cpu" "power4")) "fpq_power4")

(define_insn_reservation "power4-fpcompare" 5 (and (eq_attr "type" "fpcompare") (eq_attr "cpu" "power4")) "fpq_power4")

(define_insn_reservation "power4-sdiv" 33 (and (eq_attr "type" "sdiv,ddiv") (eq_attr "cpu" "power4")) "(du1_power4,fpu1_power428)
|(du2_power4,fpu2_power428)
|(du3_power4,fpu2_power428)
|(du4_power4,fpu1_power428)") ; |(du3_power4,nothing,fpu2_power428)
; |(du4_power4,nothing,fpu1_power428)")

(define_insn_reservation "power4-sqrt" 40 (and (eq_attr "type" "ssqrt,dsqrt") (eq_attr "cpu" "power4")) "(du1_power4,fpu1_power435)
|(du2_power4,fpu2_power435)
|(du3_power4,fpu2_power435)
|(du4_power4,fpu2_power435)") ; |(du3_power4,nothing,fpu2_power435)
; |(du4_power4,nothing,fpu2_power435)")

; VMX (define_insn_reservation "power4-vecsimple" 2 (and (eq_attr "type" "vecsimple") (eq_attr "cpu" "power4")) "vq_power4")

(define_insn_reservation "power4-veccomplex" 5 (and (eq_attr "type" "veccomplex") (eq_attr "cpu" "power4")) "vq_power4")

; vecfp compare (define_insn_reservation "power4-veccmp" 8 (and (eq_attr "type" "veccmp") (eq_attr "cpu" "power4")) "vq_power4")

(define_insn_reservation "power4-vecfloat" 8 (and (eq_attr "type" "vecfloat") (eq_attr "cpu" "power4")) "vq_power4")

(define_insn_reservation "power4-vecperm" 2 (and (eq_attr "type" "vecperm") (eq_attr "cpu" "power4")) "vpq_power4")

(define_bypass 4 "power4-vecload" "power4-vecperm")

(define_bypass 3 "power4-vecsimple" "power4-vecperm") (define_bypass 6 "power4-veccomplex" "power4-vecperm") (define_bypass 3 "power4-vecperm" "power4-vecsimple,power4-veccomplex,power4-vecfloat") (define_bypass 9 "power4-vecfloat" "power4-vecperm")

(define_bypass 5 "power4-vecsimple,power4-veccomplex" "power4-branch,power4-crlogical,power4-delayedcr,power4-mfcr,power4-mfcrf")

(define_bypass 4 "power4-vecsimple,power4-vecperm" "power4-vecstore") (define_bypass 7 "power4-veccomplex" "power4-vecstore") (define_bypass 10 "power4-vecfloat" "power4-vecstore")