freebsd-skq/contrib/gcc/config/rs6000/sync.md
2007-05-19 01:19:51 +00:00

19 KiB

;; Machine description for PowerPC synchronization instructions. ;; Copyright (C) 2005 Free Software Foundation, Inc. ;; Contributed by Geoffrey Keating.

;; 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, 51 Franklin Street, Fifth Floor, Boston, ;; MA 02110-1301, USA.

(define_mode_attr larx [(SI "lwarx") (DI "ldarx")]) (define_mode_attr stcx [(SI "stwcx.") (DI "stdcx.")])

(define_code_macro FETCHOP [plus minus ior xor and]) (define_code_attr fetchop_name [(plus "add") (minus "sub") (ior "ior") (xor "xor") (and "and")]) (define_code_attr fetchop_pred [(plus "add_operand") (minus "gpc_reg_operand") (ior "logical_operand") (xor "logical_operand") (and "and_operand")]) (define_code_attr fetchopsi_constr [(plus "rIL") (minus "r") (ior "rKL") (xor "rKL") (and "rTKL")]) (define_code_attr fetchopdi_constr [(plus "rIL") (minus "r") (ior "rKJF") (xor "rKJF") (and "rSTKJ")])

(define_expand "memory_barrier" [(set (mem:BLK (match_dup 0)) (unspec:BLK [(mem:BLK (match_dup 0))] UNSPEC_SYNC))] "" { operands[0] = gen_rtx_MEM (BLKmode, gen_rtx_SCRATCH (Pmode)); MEM_VOLATILE_P (operands[0]) = 1; })

(define_insn "*sync_internal" [(set (match_operand:BLK 0 "" "") (unspec:BLK [(match_operand:BLK 1 "" "")] UNSPEC_SYNC))] "" "{dcs|sync}" [(set_attr "type" "sync")])

(define_insn "load_locked_" [(set (match_operand:GPR 0 "gpc_reg_operand" "=r") (unspec_volatile:GPR [(match_operand:GPR 1 "memory_operand" "Z")] UNSPECV_LL))] "TARGET_POWERPC" " %0,%y1" [(set_attr "type" "load_l")])

(define_insn "store_conditional_" [(set (match_operand:CC 0 "cc_reg_operand" "=x") (unspec_volatile:CC [(const_int 0)] UNSPECV_SC)) (set (match_operand:GPR 1 "memory_operand" "=Z") (match_operand:GPR 2 "gpc_reg_operand" "r"))] "TARGET_POWERPC" " %2,%y1" [(set_attr "type" "store_c")])

(define_insn_and_split "sync_compare_and_swap" [(set (match_operand:GPR 0 "gpc_reg_operand" "=&r") (match_operand:GPR 1 "memory_operand" "+Z")) (set (match_dup 1) (unspec:GPR [(match_operand:GPR 2 "reg_or_short_operand" "rI") (match_operand:GPR 3 "gpc_reg_operand" "r")] UNSPEC_CMPXCHG)) (clobber (match_scratch:GPR 4 "=&r")) (clobber (match_scratch:CC 5 "=&x"))] "TARGET_POWERPC" "#" "&& reload_completed" [(const_int 0)] { rs6000_split_compare_and_swap (operands[0], operands[1], operands[2], operands[3], operands[4]); DONE; })

(define_expand "sync_compare_and_swaphi" [(match_operand:HI 0 "gpc_reg_operand" "") (match_operand:HI 1 "memory_operand" "") (match_operand:HI 2 "gpc_reg_operand" "") (match_operand:HI 3 "gpc_reg_operand" "")] "TARGET_POWERPC" { rs6000_expand_compare_and_swapqhi (operands[0], operands[1], operands[2], operands[3]); DONE; })

(define_expand "sync_compare_and_swapqi" [(match_operand:QI 0 "gpc_reg_operand" "") (match_operand:QI 1 "memory_operand" "") (match_operand:QI 2 "gpc_reg_operand" "") (match_operand:QI 3 "gpc_reg_operand" "")] "TARGET_POWERPC" { rs6000_expand_compare_and_swapqhi (operands[0], operands[1], operands[2], operands[3]); DONE; })

(define_insn_and_split "sync_compare_and_swapqhi_internal" [(set (match_operand:SI 0 "gpc_reg_operand" "=&r") (match_operand:SI 4 "memory_operand" "+Z")) (set (match_dup 4) (unspec:SI [(match_operand:SI 1 "gpc_reg_operand" "r") (match_operand:SI 2 "gpc_reg_operand" "r") (match_operand:SI 3 "gpc_reg_operand" "r")] UNSPEC_CMPXCHG)) (clobber (match_scratch:SI 5 "=&r")) (clobber (match_scratch:CC 6 "=&x"))] "TARGET_POWERPC" "#" "&& reload_completed" [(const_int 0)] { rs6000_split_compare_and_swapqhi (operands[0], operands[1], operands[2], operands[3], operands[4], operands[5]); DONE; })

(define_insn_and_split "sync_lock_test_and_set" [(set (match_operand:GPR 0 "gpc_reg_operand" "=&r") (match_operand:GPR 1 "memory_operand" "+Z")) (set (match_dup 1) (unspec:GPR [(match_operand:GPR 2 "reg_or_short_operand" "rL")] UNSPEC_XCHG)) (clobber (match_scratch:GPR 3 "=&r")) (clobber (match_scratch:CC 4 "=&x"))] "TARGET_POWERPC" "#" "&& reload_completed" [(const_int 0)] { rs6000_split_lock_test_and_set (operands[0], operands[1], operands[2], operands[3]); DONE; })

(define_expand "sync_<fetchop_name>" [(parallel [(set (match_operand:INT1 0 "memory_operand" "") (unspec:INT1 [(FETCHOP:INT1 (match_dup 0) (match_operand:INT1 1 "<fetchop_pred>" ""))] UNSPEC_ATOMIC)) (clobber (scratch:INT1)) (clobber (scratch:CC))])] "TARGET_POWERPC" " { if (mode != SImode && mode != DImode) { if (PPC405_ERRATUM77) FAIL; rs6000_emit_sync (, mode, operands[0], operands[1], NULL_RTX, NULL_RTX, true); DONE; } }")

(define_insn_and_split "*sync_<fetchop_name>si_internal" [(set (match_operand:SI 0 "memory_operand" "+Z") (unspec:SI [(FETCHOP:SI (match_dup 0) (match_operand:SI 1 "<fetchop_pred>" "<fetchopsi_constr>"))] UNSPEC_ATOMIC)) (clobber (match_scratch:SI 2 "=&b")) (clobber (match_scratch:CC 3 "=&x"))] "TARGET_POWERPC" "#" "&& reload_completed" [(const_int 0)] { rs6000_split_atomic_op (, operands[0], operands[1], NULL_RTX, NULL_RTX, operands[2]); DONE; })

(define_insn_and_split "*sync_<fetchop_name>di_internal" [(set (match_operand:DI 0 "memory_operand" "+Z") (unspec:DI [(FETCHOP:DI (match_dup 0) (match_operand:DI 1 "<fetchop_pred>" "<fetchopdi_constr>"))] UNSPEC_ATOMIC)) (clobber (match_scratch:DI 2 "=&b")) (clobber (match_scratch:CC 3 "=&x"))] "TARGET_POWERPC" "#" "&& reload_completed" [(const_int 0)] { rs6000_split_atomic_op (, operands[0], operands[1], NULL_RTX, NULL_RTX, operands[2]); DONE; })

(define_expand "sync_nand" [(parallel [(set (match_operand:INT1 0 "memory_operand" "") (unspec:INT1 [(and:INT1 (not:INT1 (match_dup 0)) (match_operand:INT1 1 "gpc_reg_operand" ""))] UNSPEC_ATOMIC)) (clobber (scratch:INT1)) (clobber (scratch:CC))])] "TARGET_POWERPC" " { if (mode != SImode && mode != DImode) { if (PPC405_ERRATUM77) FAIL; rs6000_emit_sync (AND, mode, gen_rtx_NOT (mode, operands[0]), operands[1], NULL_RTX, NULL_RTX, true); DONE; } }")

(define_insn_and_split "*sync_nand_internal" [(set (match_operand:GPR 0 "memory_operand" "+Z") (unspec:GPR [(and:GPR (not:GPR (match_dup 0)) (match_operand:GPR 1 "gpc_reg_operand" "r"))] UNSPEC_ATOMIC)) (clobber (match_scratch:GPR 2 "=&r")) (clobber (match_scratch:CC 3 "=&x"))] "TARGET_POWERPC" "#" "&& reload_completed" [(const_int 0)] { rs6000_split_atomic_op (NOT, operands[0], operands[1], NULL_RTX, NULL_RTX, operands[2]); DONE; })

(define_expand "sync_old_<fetchop_name>" [(parallel [(set (match_operand:INT1 0 "gpc_reg_operand" "") (match_operand:INT1 1 "memory_operand" "")) (set (match_dup 1) (unspec:INT1 [(FETCHOP:INT1 (match_dup 1) (match_operand:INT1 2 "<fetchop_pred>" ""))] UNSPEC_ATOMIC)) (clobber (scratch:INT1)) (clobber (scratch:CC))])] "TARGET_POWERPC" " { if (mode != SImode && mode != DImode) { if (PPC405_ERRATUM77) FAIL; rs6000_emit_sync (, mode, operands[1], operands[2], operands[0], NULL_RTX, true); DONE; } }")

(define_insn_and_split "*sync_old_<fetchop_name>si_internal" [(set (match_operand:SI 0 "gpc_reg_operand" "=&r") (match_operand:SI 1 "memory_operand" "+Z")) (set (match_dup 1) (unspec:SI [(FETCHOP:SI (match_dup 1) (match_operand:SI 2 "<fetchop_pred>" "<fetchopsi_constr>"))] UNSPEC_ATOMIC)) (clobber (match_scratch:SI 3 "=&b")) (clobber (match_scratch:CC 4 "=&x"))] "TARGET_POWERPC" "#" "&& reload_completed" [(const_int 0)] { rs6000_split_atomic_op (, operands[1], operands[2], operands[0], NULL_RTX, operands[3]); DONE; })

(define_insn_and_split "*sync_old_<fetchop_name>di_internal" [(set (match_operand:DI 0 "gpc_reg_operand" "=&r") (match_operand:DI 1 "memory_operand" "+Z")) (set (match_dup 1) (unspec:DI [(FETCHOP:DI (match_dup 1) (match_operand:DI 2 "<fetchop_pred>" "<fetchopdi_constr>"))] UNSPEC_ATOMIC)) (clobber (match_scratch:DI 3 "=&b")) (clobber (match_scratch:CC 4 "=&x"))] "TARGET_POWERPC" "#" "&& reload_completed" [(const_int 0)] { rs6000_split_atomic_op (, operands[1], operands[2], operands[0], NULL_RTX, operands[3]); DONE; })

(define_expand "sync_old_nand" [(parallel [(set (match_operand:INT1 0 "gpc_reg_operand" "") (match_operand:INT1 1 "memory_operand" "")) (set (match_dup 1) (unspec:INT1 [(and:INT1 (not:INT1 (match_dup 1)) (match_operand:INT1 2 "gpc_reg_operand" ""))] UNSPEC_ATOMIC)) (clobber (scratch:INT1)) (clobber (scratch:CC))])] "TARGET_POWERPC" " { if (mode != SImode && mode != DImode) { if (PPC405_ERRATUM77) FAIL; rs6000_emit_sync (AND, mode, gen_rtx_NOT (mode, operands[1]), operands[2], operands[0], NULL_RTX, true); DONE; } }")

(define_insn_and_split "*sync_old_nand_internal" [(set (match_operand:GPR 0 "gpc_reg_operand" "=&r") (match_operand:GPR 1 "memory_operand" "+Z")) (set (match_dup 1) (unspec:GPR [(and:GPR (not:GPR (match_dup 1)) (match_operand:GPR 2 "gpc_reg_operand" "r"))] UNSPEC_ATOMIC)) (clobber (match_scratch:GPR 3 "=&r")) (clobber (match_scratch:CC 4 "=&x"))] "TARGET_POWERPC" "#" "&& reload_completed" [(const_int 0)] { rs6000_split_atomic_op (NOT, operands[1], operands[2], operands[0], NULL_RTX, operands[3]); DONE; })

(define_expand "sync_new_<fetchop_name>" [(parallel [(set (match_operand:INT1 0 "gpc_reg_operand" "") (FETCHOP:INT1 (match_operand:INT1 1 "memory_operand" "") (match_operand:INT1 2 "<fetchop_pred>" ""))) (set (match_dup 1) (unspec:INT1 [(FETCHOP:INT1 (match_dup 1) (match_dup 2))] UNSPEC_ATOMIC)) (clobber (scratch:INT1)) (clobber (scratch:CC))])] "TARGET_POWERPC" " { if (mode != SImode && mode != DImode) { if (PPC405_ERRATUM77) FAIL; rs6000_emit_sync (, mode, operands[1], operands[2], NULL_RTX, operands[0], true); DONE; } }")

(define_insn_and_split "*sync_new_<fetchop_name>si_internal" [(set (match_operand:SI 0 "gpc_reg_operand" "=&r") (FETCHOP:SI (match_operand:SI 1 "memory_operand" "+Z") (match_operand:SI 2 "<fetchop_pred>" "<fetchopsi_constr>"))) (set (match_dup 1) (unspec:SI [(FETCHOP:SI (match_dup 1) (match_dup 2))] UNSPEC_ATOMIC)) (clobber (match_scratch:SI 3 "=&b")) (clobber (match_scratch:CC 4 "=&x"))] "TARGET_POWERPC" "#" "&& reload_completed" [(const_int 0)] { rs6000_split_atomic_op (, operands[1], operands[2], NULL_RTX, operands[0], operands[3]); DONE; })

(define_insn_and_split "*sync_new_<fetchop_name>di_internal" [(set (match_operand:DI 0 "gpc_reg_operand" "=&r") (FETCHOP:DI (match_operand:DI 1 "memory_operand" "+Z") (match_operand:DI 2 "<fetchop_pred>" "<fetchopdi_constr>"))) (set (match_dup 1) (unspec:DI [(FETCHOP:DI (match_dup 1) (match_dup 2))] UNSPEC_ATOMIC)) (clobber (match_scratch:DI 3 "=&b")) (clobber (match_scratch:CC 4 "=&x"))] "TARGET_POWERPC" "#" "&& reload_completed" [(const_int 0)] { rs6000_split_atomic_op (, operands[1], operands[2], NULL_RTX, operands[0], operands[3]); DONE; })

(define_expand "sync_new_nand" [(parallel [(set (match_operand:INT1 0 "gpc_reg_operand" "") (and:INT1 (not:INT1 (match_operand:INT1 1 "memory_operand" "")) (match_operand:INT1 2 "gpc_reg_operand" ""))) (set (match_dup 1) (unspec:INT1 [(and:INT1 (not:INT1 (match_dup 1)) (match_dup 2))] UNSPEC_ATOMIC)) (clobber (scratch:INT1)) (clobber (scratch:CC))])] "TARGET_POWERPC" " { if (mode != SImode && mode != DImode) { if (PPC405_ERRATUM77) FAIL; rs6000_emit_sync (AND, mode, gen_rtx_NOT (mode, operands[1]), operands[2], NULL_RTX, operands[0], true); DONE; } }")

(define_insn_and_split "*sync_new_nand_internal" [(set (match_operand:GPR 0 "gpc_reg_operand" "=&r") (and:GPR (not:GPR (match_operand:GPR 1 "memory_operand" "+Z")) (match_operand:GPR 2 "gpc_reg_operand" "r"))) (set (match_dup 1) (unspec:GPR [(and:GPR (not:GPR (match_dup 1)) (match_dup 2))] UNSPEC_ATOMIC)) (clobber (match_scratch:GPR 3 "=&r")) (clobber (match_scratch:CC 4 "=&x"))] "TARGET_POWERPC" "#" "&& reload_completed" [(const_int 0)] { rs6000_split_atomic_op (NOT, operands[1], operands[2], NULL_RTX, operands[0], operands[3]); DONE; })

; and without cr0 clobber to avoid generation of additional clobber ; in atomic splitters causing internal consistency failure. ; cr0 already clobbered by larx/stcx. (define_insn "atomic_andsi" [(set (match_operand:SI 0 "gpc_reg_operand" "=r,r,r,r") (unspec:SI [(match_operand:SI 1 "gpc_reg_operand" "%r,r,r,r") (match_operand:SI 2 "and_operand" "?r,T,K,L")] UNSPEC_AND))] "" "@ and %0,%1,%2 {rlinm|rlwinm} %0,%1,0,%m2,%M2 {andil.|andi.} %0,%1,%b2 {andiu.|andis.} %0,%1,%u2" [(set_attr "type" ",*,compare,compare")])

(define_insn "atomic_anddi" [(set (match_operand:DI 0 "gpc_reg_operand" "=r,r,r,r,r") (unspec:DI [(match_operand:DI 1 "gpc_reg_operand" "%r,r,r,r,r") (match_operand:DI 2 "and_operand" "?r,S,T,K,J")] UNSPEC_AND))] "TARGET_POWERPC64" "@ and %0,%1,%2 rldic%B2 %0,%1,0,%S2 rlwinm %0,%1,0,%m2,%M2 andi. %0,%1,%b2 andis. %0,%1,%u2" [(set_attr "type" ",,,compare,compare") (set_attr "length" "4,4,4,4,4")])

; the sync_*_internal patterns all have these operands: ; 0 - memory location ; 1 - operand ; 2 - value in memory after operation ; 3 - value in memory immediately before operation

(define_insn "*sync_addshort_internal" [(set (match_operand:SI 2 "gpc_reg_operand" "=&r") (ior:SI (and:SI (plus:SI (match_operand:SI 0 "memory_operand" "+Z") (match_operand:SI 1 "add_operand" "rI")) (match_operand:SI 4 "gpc_reg_operand" "r")) (and:SI (not:SI (match_dup 4)) (match_dup 0)))) (set (match_operand:SI 3 "gpc_reg_operand" "=&b") (match_dup 0)) (set (match_dup 0) (unspec:SI [(ior:SI (and:SI (plus:SI (match_dup 0) (match_dup 1)) (match_dup 4)) (and:SI (not:SI (match_dup 4)) (match_dup 0)))] UNSPEC_SYNC_OP)) (clobber (match_scratch:CC 5 "=&x")) (clobber (match_scratch:SI 6 "=&r"))] "TARGET_POWERPC && !PPC405_ERRATUM77" "lwarx %3,%y0\n\tadd%I1 %2,%3,%1\n\tandc %6,%3,%4\n\tand %2,%2,%4\n\tor %2,%2,%6\n\tstwcx. %2,%y0\n\tbne- $-24" [(set_attr "length" "28")])

(define_insn "*sync_subshort_internal" [(set (match_operand:SI 2 "gpc_reg_operand" "=&r") (ior:SI (and:SI (minus:SI (match_operand:SI 0 "memory_operand" "+Z") (match_operand:SI 1 "add_operand" "rI")) (match_operand:SI 4 "gpc_reg_operand" "r")) (and:SI (not:SI (match_dup 4)) (match_dup 0)))) (set (match_operand:SI 3 "gpc_reg_operand" "=&b") (match_dup 0)) (set (match_dup 0) (unspec:SI [(ior:SI (and:SI (minus:SI (match_dup 0) (match_dup 1)) (match_dup 4)) (and:SI (not:SI (match_dup 4)) (match_dup 0)))] UNSPEC_SYNC_OP)) (clobber (match_scratch:CC 5 "=&x")) (clobber (match_scratch:SI 6 "=&r"))] "TARGET_POWERPC && !PPC405_ERRATUM77" "lwarx %3,%y0\n\tsubf %2,%1,%3\n\tandc %6,%3,%4\n\tand %2,%2,%4\n\tor %2,%2,%6\n\tstwcx. %2,%y0\n\tbne- $-24" [(set_attr "length" "28")])

(define_insn "*sync_andsi_internal" [(set (match_operand:SI 2 "gpc_reg_operand" "=&r,&r,&r,&r") (and:SI (match_operand:SI 0 "memory_operand" "+Z,Z,Z,Z") (match_operand:SI 1 "and_operand" "r,T,K,L"))) (set (match_operand:SI 3 "gpc_reg_operand" "=&b,&b,&b,&b") (match_dup 0)) (set (match_dup 0) (unspec:SI [(and:SI (match_dup 0) (match_dup 1))] UNSPEC_SYNC_OP)) (clobber (match_scratch:CC 4 "=&x,&x,&x,&x"))] "TARGET_POWERPC && !PPC405_ERRATUM77" "@ lwarx %3,%y0\n\tand %2,%3,%1\n\tstwcx. %2,%y0\n\tbne- $-12 lwarx %3,%y0\n\trlwinm %2,%3,0,%m1,%M1\n\tstwcx. %2,%y0\n\tbne- $-12 lwarx %3,%y0\n\tandi. %2,%3,%b1\n\tstwcx. %2,%y0\n\tbne- $-12 lwarx %3,%y0\n\tandis. %2,%3,%u1\n\tstwcx. %2,%y0\n\tbne- $-12" [(set_attr "length" "16,16,16,16")])

(define_insn "*sync_boolsi_internal" [(set (match_operand:SI 2 "gpc_reg_operand" "=&r,&r,&r") (match_operator:SI 4 "boolean_or_operator" [(match_operand:SI 0 "memory_operand" "+Z,Z,Z") (match_operand:SI 1 "logical_operand" "r,K,L")])) (set (match_operand:SI 3 "gpc_reg_operand" "=&b,&b,&b") (match_dup 0)) (set (match_dup 0) (unspec:SI [(match_dup 4)] UNSPEC_SYNC_OP)) (clobber (match_scratch:CC 5 "=&x,&x,&x"))] "TARGET_POWERPC && !PPC405_ERRATUM77" "@ lwarx %3,%y0\n\t%q4 %2,%3,%1\n\tstwcx. %2,%y0\n\tbne- $-12 lwarx %3,%y0\n\t%q4i %2,%3,%b1\n\tstwcx. %2,%y0\n\tbne- $-12 lwarx %3,%y0\n\t%q4is %2,%3,%u1\n\tstwcx. %2,%y0\n\tbne- $-12" [(set_attr "length" "16,16,16")])

; This pattern could also take immediate values of operand 1, ; since the non-NOT version of the operator is used; but this is not ; very useful, since in practice operand 1 is a full 32-bit value. ; Likewise, operand 5 is in practice either <= 2^16 or it is a register. (define_insn "*sync_boolcshort_internal" [(set (match_operand:SI 2 "gpc_reg_operand" "=&r") (match_operator:SI 4 "boolean_operator" [(xor:SI (match_operand:SI 0 "memory_operand" "+Z") (match_operand:SI 5 "logical_operand" "rK")) (match_operand:SI 1 "gpc_reg_operand" "r")])) (set (match_operand:SI 3 "gpc_reg_operand" "=&b") (match_dup 0)) (set (match_dup 0) (unspec:SI [(match_dup 4)] UNSPEC_SYNC_OP)) (clobber (match_scratch:CC 6 "=&x"))] "TARGET_POWERPC && !PPC405_ERRATUM77" "lwarx %3,%y0\n\txor%I2 %2,%3,%5\n\t%q4 %2,%2,%1\n\tstwcx. %2,%y0\n\tbne- $-16" [(set_attr "length" "20")])

(define_insn "isync" [(set (mem:BLK (match_scratch 0 "X")) (unspec_volatile:BLK [(mem:BLK (match_scratch 1 "X"))] UNSPEC_ISYNC))] "" "{ics|isync}" [(set_attr "type" "isync")])

(define_expand "sync_lock_release" [(set (match_operand:INT 0 "memory_operand") (match_operand:INT 1 "any_operand"))] "" " { emit_insn (gen_lwsync ()); emit_move_insn (operands[0], operands[1]); DONE; }")

; Some AIX assemblers don't accept lwsync, so we use a .long. (define_insn "lwsync" [(set (mem:BLK (match_scratch 0 "X")) (unspec_volatile:BLK [(mem:BLK (match_scratch 1 "X"))] UNSPEC_LWSYNC))] "" { if (TARGET_NO_LWSYNC) return "sync"; else return ".long 0x7c2004ac"; } [(set_attr "type" "sync")])