--- /dev/null
+;; Machine Descriptions for R8C/M16C/M32C
+;; Copyright (C) 2005, 2007, 2008
+;; Free Software Foundation, Inc.
+;; Contributed by Red Hat.
+;;
+;; 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/>.
+
+;; move, push, extend, etc.
+
+;; Be careful to never create an alternative that has memory as both
+;; src and dest, as that makes gcc think that mem-mem moves in general
+;; are supported. While the chip does support this, it only has two
+;; address registers and sometimes gcc requires more than that. One
+;; example is code like this: a = *b where both a and b are spilled to
+;; the stack.
+
+;; Match push/pop before mov.b for passing char as arg,
+;; e.g. stdlib/efgcvt.c.
+(define_insn "movqi_op"
+ [(set (match_operand:QI 0 "m32c_nonimmediate_operand"
+ "=Rqi*Rmm, <, RqiSd*Rmm, SdSs, Rqi*Rmm, Sd")
+ (match_operand:QI 1 "m32c_any_operand"
+ "iRqi*Rmm, iRqiSd*Rmm, >, Rqi*Rmm, SdSs, i"))]
+ "m32c_mov_ok (operands, QImode)"
+ "@
+ mov.b\t%1,%0
+ push.b\t%1
+ pop.b\t%0
+ mov.b\t%1,%0
+ mov.b\t%1,%0
+ mov.b\t%1,%0"
+ [(set_attr "flags" "sz,*,*,sz,sz,sz")]
+ )
+
+(define_expand "movqi"
+ [(set (match_operand:QI 0 "nonimmediate_operand" "=RqiSd*Rmm")
+ (match_operand:QI 1 "general_operand" "iRqiSd*Rmm"))]
+ ""
+ "if (m32c_prepare_move (operands, QImode)) DONE;"
+ )
+
+
+(define_insn "movhi_op"
+ [(set (match_operand:HI 0 "m32c_nonimmediate_operand"
+ "=Rhi*Rmm, Sd, SdSs, *Rcr, RhiSd*Rmm, <, RhiSd*Rmm, <, *Rcr")
+ (match_operand:HI 1 "m32c_any_operand"
+ "iRhi*RmmSdSs, i, Rhi*Rmm, RhiSd*Rmm, *Rcr, iRhiSd*Rmm, >, *Rcr, >"))]
+ "m32c_mov_ok (operands, HImode)"
+ "@
+ mov.w\t%1,%0
+ mov.w\t%1,%0
+ mov.w\t%1,%0
+ ldc\t%1,%0
+ stc\t%1,%0
+ push.w\t%1
+ pop.w\t%0
+ pushc\t%1
+ popc\t%0"
+ [(set_attr "flags" "sz,sz,sz,n,n,n,n,n,n")]
+ )
+
+(define_expand "movhi"
+ [(set (match_operand:HI 0 "m32c_nonimmediate_operand" "=RhiSd*Rmm")
+ (match_operand:HI 1 "m32c_any_operand" "iRhiSd*Rmm"))]
+ ""
+ "if (m32c_prepare_move (operands, HImode)) DONE;"
+ )
+
+
+(define_insn "movpsi_op"
+ [(set (match_operand:PSI 0 "m32c_nonimmediate_operand"
+ "=Raa, SdRmmRpi, Rcl, RpiSd*Rmm, <, <, Rcl, RpiRaa*Rmm")
+ (match_operand:PSI 1 "m32c_any_operand"
+ "sIU3, iSdRmmRpi, iRpiSd*Rmm, Rcl, Rpi*Rmm, Rcl, >, >"))]
+ "TARGET_A24 && m32c_mov_ok (operands, PSImode)"
+ "@
+ mov.l:s\t%1,%0
+ mov.l\t%1,%0
+ ldc\t%1,%0
+ stc\t%1,%0
+ push.l\t%1
+ pushc\t%1
+ popc\t%0
+ #"
+ [(set_attr "flags" "sz,sz,n,n,n,n,n,*")]
+ )
+
+
+;; The intention here is to combine the add with the move to create an
+;; indexed move. GCC doesn't always figure this out itself.
+
+(define_peephole2
+ [(set (match_operand:HPSI 0 "register_operand" "")
+ (plus:HPSI (match_operand:HPSI 1 "register_operand" "")
+ (match_operand:HPSI 2 "immediate_operand" "")))
+ (set (match_operand:QHSI 3 "nonimmediate_operand" "")
+ (mem:QHSI (match_operand:HPSI 4 "register_operand" "")))]
+ "REGNO (operands[0]) == REGNO (operands[1])
+ && REGNO (operands[0]) == REGNO (operands[4])
+ && (rtx_equal_p (operands[0], operands[3])
+ || (dead_or_set_p (peep2_next_insn (1), operands[4])
+ && ! reg_mentioned_p (operands[0], operands[3])))"
+ [(set (match_dup 3)
+ (mem:QHSI (plus:HPSI (match_dup 1)
+ (match_dup 2))))]
+ "")
+
+(define_peephole2
+ [(set (match_operand:HPSI 0 "register_operand" "")
+ (plus:HPSI (match_operand:HPSI 1 "register_operand" "")
+ (match_operand:HPSI 2 "immediate_operand" "")))
+ (set (mem:QHSI (match_operand:HPSI 4 "register_operand" ""))
+ (match_operand:QHSI 3 "m32c_any_operand" ""))]
+ "REGNO (operands[0]) == REGNO (operands[1])
+ && REGNO (operands[0]) == REGNO (operands[4])
+ && dead_or_set_p (peep2_next_insn (1), operands[4])
+ && ! reg_mentioned_p (operands[0], operands[3])"
+ [(set (mem:QHSI (plus:HPSI (match_dup 1)
+ (match_dup 2)))
+ (match_dup 3))]
+ "")
+
+; Peephole to generate SImode mov instructions for storing an
+; immediate double data to a memory location.
+(define_peephole2
+ [(set (match_operand:HI 0 "memory_operand" "")
+ (match_operand 1 "const_int_operand" ""))
+ (set (match_operand:HI 2 "memory_operand" "")
+ (match_operand 3 "const_int_operand" ""))]
+ "TARGET_A24 && m32c_immd_dbl_mov (operands, HImode)"
+ [(set (match_dup 4) (match_dup 5))]
+ ""
+)
+
+; Some PSI moves must be split.
+(define_split
+ [(set (match_operand:PSI 0 "m32c_nonimmediate_operand" "")
+ (match_operand:PSI 1 "m32c_any_operand" ""))]
+ "reload_completed && m32c_split_psi_p (operands)"
+ [(set (match_dup 2)
+ (match_dup 3))
+ (set (match_dup 4)
+ (match_dup 5))]
+ "m32c_split_move (operands, PSImode, 3);"
+ )
+
+(define_expand "movpsi"
+ [(set (match_operand:PSI 0 "m32c_nonimmediate_operand" "")
+ (match_operand:PSI 1 "m32c_any_operand" ""))]
+ ""
+ "if (m32c_prepare_move (operands, PSImode)) DONE;"
+ )
+
+
+
+(define_expand "movsi"
+ [(set (match_operand:SI 0 "m32c_nonimmediate_operand" "=RsiSd*Rmm")
+ (match_operand:SI 1 "m32c_any_operand" "iRsiSd*Rmm"))]
+ ""
+ "if (m32c_split_move (operands, SImode, 0)) DONE;"
+ )
+
+; All SI moves are split if TARGET_A16
+(define_insn_and_split "movsi_splittable"
+ [(set (match_operand:SI 0 "m32c_nonimmediate_operand" "=Rsi<*Rmm,RsiSd*Rmm,Ss")
+ (match_operand:SI 1 "m32c_any_operand" "iRsiSd*Rmm,iRsi>*Rmm,Rsi*Rmm"))]
+ "TARGET_A16"
+ "#"
+ "TARGET_A16 && reload_completed"
+ [(pc)]
+ "m32c_split_move (operands, SImode, 1); DONE;"
+ )
+
+; The movsi pattern doesn't always match because sometimes the modes
+; don't match.
+(define_insn "push_a01_l"
+ [(set (mem:SI (pre_dec:PSI (reg:PSI SP_REGNO)))
+ (match_operand 0 "a_operand" "Raa"))]
+ ""
+ "push.l\t%0"
+ [(set_attr "flags" "n")]
+ )
+
+(define_insn "movsi_24"
+ [(set (match_operand:SI 0 "m32c_nonimmediate_operand" "=Rsi*Rmm, Sd, RsiSd*Rmm, <")
+ (match_operand:SI 1 "m32c_any_operand" "iRsiSd*Rmm, iRsi*Rmm, >, iRsiRaaSd*Rmm"))]
+ "TARGET_A24"
+ "@
+ mov.l\t%1,%0
+ mov.l\t%1,%0
+ #
+ push.l\t%1"
+ [(set_attr "flags" "sz,sz,*,n")]
+ )
+
+(define_expand "movdi"
+ [(set (match_operand:DI 0 "m32c_nonimmediate_operand" "=RdiSd*Rmm")
+ (match_operand:DI 1 "m32c_any_operand" "iRdiSd*Rmm"))]
+ ""
+ "if (m32c_split_move (operands, DImode, 0)) DONE;"
+ )
+
+(define_insn_and_split "movdi_splittable"
+ [(set (match_operand:DI 0 "m32c_nonimmediate_operand" "=Rdi<*Rmm,RdiSd*Rmm")
+ (match_operand:DI 1 "m32c_any_operand" "iRdiSd*Rmm,iRdi>*Rmm"))]
+ ""
+ "#"
+ "reload_completed"
+ [(pc)]
+ "m32c_split_move (operands, DImode, 1); DONE;"
+ )
+
+
+
+
+(define_insn "pushqi"
+ [(set (mem:QI (pre_dec:PSI (reg:PSI SP_REGNO)))
+ (match_operand:QI 0 "mrai_operand" "iRqiSd*Rmm"))]
+ ""
+ "push.b\t%0"
+ [(set_attr "flags" "n")]
+ )
+
+(define_expand "pushhi"
+ [(set (mem:HI (pre_dec:PSI (reg:PSI SP_REGNO)))
+ (match_operand:HI 0 "" ""))]
+ ""
+ "if (TARGET_A16)
+ gen_pushhi_16 (operands[0]);
+ else
+ gen_pushhi_24 (operands[0]);
+ DONE;"
+ )
+
+(define_insn "pushhi_16"
+ [(set (mem:HI (pre_dec:HI (reg:HI SP_REGNO)))
+ (match_operand:HI 0 "mrai_operand" "iRhiSd*Rmm,Rcr"))]
+ "TARGET_A16"
+ "@
+ push.w\t%0
+ pushc\t%0"
+ [(set_attr "flags" "n,n")]
+ )
+
+(define_insn "pushhi_24"
+ [(set (mem:HI (pre_dec:PSI (reg:PSI SP_REGNO)))
+ (match_operand:HI 0 "mrai_operand" "iRhiSd*Rmm"))]
+ "TARGET_A24"
+ "push.w\t%0"
+ [(set_attr "flags" "n")]
+ )
+
+;(define_insn "pushpi"
+; [(set (mem:PSI (pre_dec:PSI (reg:PSI SP_REGNO)))
+; (match_operand:PI 0 "mrai_operand" "iRaa,Rcr"))]
+; "TARGET_A24"
+; "@
+; push.l\t%0
+; pushc\t%0"
+; )
+
+(define_insn "pushsi"
+ [(set (mem:SI (pre_dec:PSI (reg:PSI SP_REGNO)))
+ (match_operand:SI 0 "mrai_operand" "iRsiSd*Rmm"))]
+ "TARGET_A24"
+ "push.l\t%0"
+ [(set_attr "flags" "n")]
+ )
+
+(define_expand "pophi"
+ [(set (match_operand:HI 0 "mra_operand" "=RhiSd*Rmm,Rcr")
+ (mem:HI (post_inc:HI (reg:HI SP_REGNO))))]
+ ""
+ "if (TARGET_A16)
+ gen_pophi_16 (operands[0]);
+ else
+ gen_pophi_24 (operands[0]);
+ DONE;"
+ )
+
+(define_insn "pophi_16"
+ [(set (match_operand:HI 0 "mra_operand" "=RhiSd*Rmm,Rcr")
+ (mem:HI (post_inc:HI (reg:HI SP_REGNO))))]
+ "TARGET_A16"
+ "@
+ pop.w\t%0
+ popc\t%0"
+ [(set_attr "flags" "n,n")]
+ )
+
+(define_insn "pophi_24"
+ [(set (match_operand:HI 0 "mra_operand" "=RhiSd*Rmm")
+ (mem:HI (post_inc:PSI (reg:PSI SP_REGNO))))]
+ "TARGET_A24"
+ "pop.w\t%0"
+ [(set_attr "flags" "n")]
+ )
+
+(define_insn "poppsi"
+ [(set (match_operand:PSI 0 "cr_operand" "=Rcl")
+ (mem:PSI (post_inc:PSI (reg:PSI SP_REGNO))))]
+ "TARGET_A24"
+ "popc\t%0"
+ [(set_attr "flags" "n")]
+ )
+
+
+;; Rhl used here as an HI-mode Rxl
+(define_insn "extendqihi2"
+[(set (match_operand:HI 0 "m32c_nonimmediate_operand" "=RhlSd*Rmm")
+ (sign_extend:HI (match_operand:QI 1 "mra_operand" "0")))]
+ ""
+ "exts.b\t%1"
+ [(set_attr "flags" "sz")]
+ )
+
+(define_insn "extendhisi2"
+ [(set (match_operand:SI 0 "register_operand" "=R03")
+ (sign_extend:SI (match_operand:HI 1 "r0123_operand" "0")))]
+ ""
+ "*
+ if (REGNO(operands[0]) == 0) return \"exts.w\t%1\";
+ else return \"mov.w r1,r3 | sha.w #-8,r3 | sha.w #-7,r3\";"
+ [(set_attr "flags" "x")]
+ )
+
+(define_insn "extendhipsi2"
+ [(set (match_operand:PSI 0 "register_operand" "=R03")
+ (sign_extend:PSI (match_operand:HI 1 "register_operand" "0")))]
+ ""
+ "*
+ if (REGNO(operands[0]) == 0) return \"exts.w\t%1\";
+ else return \"mov.w r1,r3 | sha.w #-8,r3 | sha.w #-7,r3\";"
+ [(set_attr "flags" "x")]
+ )
+
+(define_insn "extendpsisi2"
+ [(set (match_operand:SI 0 "mr_operand" "=R03Sd*Rmm")
+ (sign_extend:SI (match_operand:PSI 1 "mr_operand" "0")))]
+ ""
+ "; expand psi %1 to si %0"
+ [(set_attr "flags" "n")]
+ )
+
+(define_insn "zero_extendpsisi2"
+ [(set (match_operand:SI 0 "mr_operand" "=R03Sd*Rmm")
+ (zero_extend:SI (match_operand:PSI 1 "mr_operand" "0")))]
+ ""
+ "; expand psi %1 to si %0"
+ [(set_attr "flags" "n")]
+ )
+
+(define_insn "zero_extendhipsi2"
+ [(set (match_operand:PSI 0 "register_operand" "=Raa")
+ (truncate:PSI (zero_extend:SI (match_operand:HI 1 "register_operand" "R03"))))]
+ ""
+ "mov.w\t%1,%0"
+ [(set_attr "flags" "sz")]
+ )
+
+(define_insn "zero_extendhisi2"
+ [(set (match_operand:SI 0 "m32c_nonimmediate_operand" "=RsiSd")
+ (zero_extend:SI (match_operand:HI 1 "nonimmediate_operand" "0")))]
+ ""
+ "mov.w\t#0,%H0"
+ [(set_attr "flags" "x")]
+ )
+
+(define_insn "zero_extendqihi2"
+ [(set (match_operand:HI 0 "m32c_nonimmediate_operand" "=?Rhl,RhiSd*Rmm")
+ (zero_extend:HI (match_operand:QI 1 "nonimmediate_operand" "0,0")))]
+ ""
+ "@
+ mov.b\t#0,%H0
+ and.w\t#255,%0"
+ [(set_attr "flags" "x,x")]
+ )
+
+(define_insn "truncsipsi2_16"
+ [(set (match_operand:PSI 0 "m32c_nonimmediate_operand" "=RsiRadSd*Rmm,Raa,Rcr,RsiSd*Rmm")
+ (truncate:PSI (match_operand:SI 1 "nonimmediate_operand" "0,RsiSd*Rmm,RsiSd*Rmm,Rcr")))]
+ "TARGET_A16"
+ "@
+ ; no-op trunc si %1 to psi %0
+ #
+ ldc\t%1,%0
+ stc\t%1,%0"
+ [(set_attr "flags" "n,*,n,n")]
+ )
+
+(define_insn "trunchiqi2"
+ [(set (match_operand:QI 0 "m32c_nonimmediate_operand" "=RqiRmmSd")
+ (truncate:QI (match_operand:HI 1 "mra_qi_operand" "0")))]
+ ""
+ "; no-op trunc hi %1 to qi %0"
+ [(set_attr "flags" "n")]
+ )
+
+(define_insn "truncsipsi2_24"
+ [(set (match_operand:PSI 0 "m32c_nonimmediate_operand" "=RsiSd*Rmm,Raa,!Rcl,RsiSd*Rmm")
+ (truncate:PSI (match_operand:SI 1 "m32c_nonimmediate_operand" "0,RsiSd*Rmm,RsiSd*Rmm,!Rcl")))]
+ "TARGET_A24"
+ "@
+ ; no-op trunc si %1 to psi %0
+ mov.l\t%1,%0
+ ldc\t%1,%0
+ stc\t%1,%0"
+ [(set_attr "flags" "n,sz,n,n")]
+ )
+
+(define_expand "truncsipsi2"
+ [(set (match_operand:PSI 0 "m32c_nonimmediate_operand" "=RsiRadSd*Rmm,Raa,Rcr,RsiSd*Rmm")
+ (truncate:PSI (match_operand:SI 1 "m32c_nonimmediate_operand" "0,RsiSd*Rmm,RsiSd*Rmm,Rcr")))]
+ ""
+ ""
+ )
+
+(define_expand "reload_inqi"
+ [(set (match_operand:QI 2 "" "=&Rqi")
+ (match_operand:QI 1 "" ""))
+ (set (match_operand:QI 0 "" "")
+ (match_dup 2))
+ ]
+ ""
+ "")
+
+(define_expand "reload_outqi"
+ [(set (match_operand:QI 2 "" "=&Rqi")
+ (match_operand:QI 1 "" ""))
+ (set (match_operand:QI 0 "" "")
+ (match_dup 2))
+ ]
+ ""
+ "")
+
+(define_expand "reload_inhi"
+ [(set (match_operand:HI 2 "" "=&Rhi")
+ (match_operand:HI 1 "" ""))
+ (set (match_operand:HI 0 "" "")
+ (match_dup 2))
+ ]
+ ""
+ "")
+
+(define_expand "reload_outhi"
+ [(set (match_operand:HI 2 "" "=&Rhi")
+ (match_operand:HI 1 "" ""))
+ (set (match_operand:HI 0 "" "")
+ (match_dup 2))
+ ]
+ ""
+ "")
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