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Annotation of researchv10dc/cmd/gcc/optabs.c, revision 1.1

1.1     ! root        1: /* Expand the basic unary and binary arithmetic operations, for GNU compiler.
        !             2:    Copyright (C) 1987 Free Software Foundation, Inc.
        !             3: 
        !             4: This file is part of GNU CC.
        !             5: 
        !             6: GNU CC is distributed in the hope that it will be useful,
        !             7: but WITHOUT ANY WARRANTY.  No author or distributor
        !             8: accepts responsibility to anyone for the consequences of using it
        !             9: or for whether it serves any particular purpose or works at all,
        !            10: unless he says so in writing.  Refer to the GNU CC General Public
        !            11: License for full details.
        !            12: 
        !            13: Everyone is granted permission to copy, modify and redistribute
        !            14: GNU CC, but only under the conditions described in the
        !            15: GNU CC General Public License.   A copy of this license is
        !            16: supposed to have been given to you along with GNU CC so you
        !            17: can know your rights and responsibilities.  It should be in a
        !            18: file named COPYING.  Among other things, the copyright notice
        !            19: and this notice must be preserved on all copies.  */
        !            20: 
        !            21: 
        !            22: #include "config.h"
        !            23: #include "rtl.h"
        !            24: #include "tree.h"
        !            25: #include "flags.h"
        !            26: #include "insn-flags.h"
        !            27: #include "insn-codes.h"
        !            28: #include "expr.h"
        !            29: #include "insn-config.h"
        !            30: #include "recog.h"
        !            31: 
        !            32: /* Each optab contains info on how this target machine
        !            33:    can perform a particular operation
        !            34:    for all sizes and kinds of operands.
        !            35: 
        !            36:    The operation to be performed is often specified
        !            37:    by passing one of these optabs as an argument.
        !            38: 
        !            39:    See expr.h for documentation of these optabs.  */
        !            40: 
        !            41: optab add_optab;
        !            42: optab sub_optab;
        !            43: optab smul_optab;
        !            44: optab umul_optab;
        !            45: optab smul_widen_optab;
        !            46: optab umul_widen_optab;
        !            47: optab sdiv_optab;
        !            48: optab sdivmod_optab;
        !            49: optab udiv_optab;
        !            50: optab udivmod_optab;
        !            51: optab smod_optab;
        !            52: optab umod_optab;
        !            53: optab flodiv_optab;
        !            54: optab ftrunc_optab;
        !            55: optab and_optab;
        !            56: optab andcb_optab;
        !            57: optab ior_optab;
        !            58: optab xor_optab;
        !            59: optab ashl_optab;
        !            60: optab lshr_optab;
        !            61: optab lshl_optab;
        !            62: optab ashr_optab;
        !            63: optab rotl_optab;
        !            64: optab rotr_optab;
        !            65: 
        !            66: optab mov_optab;
        !            67: optab movstrict_optab;
        !            68: 
        !            69: optab neg_optab;
        !            70: optab abs_optab;
        !            71: optab one_cmpl_optab;
        !            72: optab ffs_optab;
        !            73: 
        !            74: optab cmp_optab;
        !            75: optab tst_optab;
        !            76: 
        !            77: /* Generate code to perform an operation specified by BINOPTAB
        !            78:    on operands OP0 and OP1, with result having machine-mode MODE.
        !            79: 
        !            80:    UNSIGNEDP is for the case where we have to widen the operands
        !            81:    to perform the operation.  It says to use zero-extension.
        !            82: 
        !            83:    If TARGET is nonzero, the value
        !            84:    is generated there, if it is convenient to do so.
        !            85:    In all cases an rtx is returned for the locus of the value;
        !            86:    this may or may not be TARGET.  */
        !            87: 
        !            88: rtx
        !            89: expand_binop (mode, binoptab, op0, op1, target, unsignedp, methods)
        !            90:      enum machine_mode mode;
        !            91:      optab binoptab;
        !            92:      rtx op0, op1;
        !            93:      rtx target;
        !            94:      int unsignedp;
        !            95:      enum optab_methods methods;
        !            96: {
        !            97:   register rtx temp;
        !            98:   int target_is_not_an_operand = 0;
        !            99:   rtx last = get_last_insn ();
        !           100: 
        !           101:   op0 = protect_from_queue (op0, 0);
        !           102:   op1 = protect_from_queue (op1, 0);
        !           103:   if (target)
        !           104:     target = protect_from_queue (target, 1);
        !           105: 
        !           106:   /* We may get better code by generating the result in a register
        !           107:      when the target is not one of the operands.  */
        !           108:   if (target && ! rtx_equal_p (target, op1) && ! rtx_equal_p (target, op0))
        !           109:     target_is_not_an_operand = 1;
        !           110: 
        !           111:   if (flag_force_mem)
        !           112:     {
        !           113:       op0 = force_not_mem (op0);
        !           114:       op1 = force_not_mem (op1);
        !           115:     }
        !           116: 
        !           117:   /* If operation is commutative,
        !           118:      try to make the first operand a register.
        !           119:      Even better, try to make it the same as the target.
        !           120:      Also try to make the last operand a constant.  */
        !           121:   if (binoptab == add_optab
        !           122:       || binoptab == and_optab
        !           123:       || binoptab == ior_optab
        !           124:       || binoptab == xor_optab
        !           125:       || binoptab == smul_optab
        !           126:       || binoptab == umul_optab
        !           127:       || binoptab == smul_widen_optab
        !           128:       || binoptab == umul_widen_optab)
        !           129:     {
        !           130:       if (((target == 0 || GET_CODE (target) == REG)
        !           131:           ? ((GET_CODE (op1) == REG
        !           132:               && GET_CODE (op0) != REG)
        !           133:              || target == op1)
        !           134:           : rtx_equal_p (op1, target))
        !           135:          ||
        !           136:          GET_CODE (op0) == CONST_INT)
        !           137:        {
        !           138:          temp = op1;
        !           139:          op1 = op0;
        !           140:          op0 = temp;
        !           141:        }
        !           142:     }
        !           143: 
        !           144:   /* If we can do it with a three-operand insn, do so.  */
        !           145: 
        !           146:   if (binoptab->handlers[(int) mode].insn_code != CODE_FOR_nothing)
        !           147:     {
        !           148:       int icode = (int) binoptab->handlers[(int) mode].insn_code;
        !           149:       enum machine_mode mode0 = insn_operand_mode[icode][1];
        !           150:       enum machine_mode mode1 = insn_operand_mode[icode][2];
        !           151:       rtx pat;
        !           152:       rtx xop0 = op0, xop1 = op1;
        !           153: 
        !           154:       if (target)
        !           155:        temp = target;
        !           156:       else
        !           157:        temp = gen_reg_rtx (mode);
        !           158: 
        !           159:       /* In case the insn wants input operands in modes different from
        !           160:         the result, convert the operands.  */
        !           161: 
        !           162:       if (GET_MODE (op0) != VOIDmode
        !           163:          && GET_MODE (op0) != mode0)
        !           164:        xop0 = convert_to_mode (mode0, xop0, unsignedp);
        !           165: 
        !           166:       if (GET_MODE (xop1) != VOIDmode
        !           167:          && GET_MODE (xop1) != mode1)
        !           168:        xop1 = convert_to_mode (mode1, xop1, unsignedp);
        !           169: 
        !           170:       /* Now, if insn requires register operands, put operands into regs.  */
        !           171: 
        !           172:       if (! (*insn_operand_predicate[icode][1]) (xop0, mode0))
        !           173:        xop0 = force_reg (mode0, xop0);
        !           174: 
        !           175:       if (! (*insn_operand_predicate[icode][2]) (xop1, mode1))
        !           176:        xop1 = force_reg (mode1, xop1);
        !           177: 
        !           178:       if (! (*insn_operand_predicate[icode][0]) (temp, mode))
        !           179:        temp = gen_reg_rtx (mode);
        !           180: 
        !           181:       pat = GEN_FCN (icode) (temp, xop0, xop1);
        !           182:       if (pat)
        !           183:        {
        !           184:          emit_insn (pat);
        !           185:          return temp;
        !           186:        }
        !           187:       else
        !           188:        delete_insns_since (last);
        !           189:     }
        !           190: 
        !           191:   /* It can't be open-coded in this mode.
        !           192:      Use a library call if one is available and caller says that's ok.  */
        !           193: 
        !           194:   if (binoptab->handlers[(int) mode].lib_call
        !           195:       && (methods == OPTAB_LIB || methods == OPTAB_LIB_WIDEN))
        !           196:     {
        !           197:       rtx insn_before;
        !           198:       rtx funexp = gen_rtx (SYMBOL_REF, Pmode,
        !           199:                            binoptab->handlers[(int) mode].lib_call);
        !           200: 
        !           201:       /* Pass the address through a pseudoreg, if desired,
        !           202:         before the "beginning" of the library call (for deletion).  */
        !           203: #ifndef NO_FUNCTION_CSE
        !           204:       if (! flag_no_function_cse)
        !           205:        funexp = copy_to_mode_reg (Pmode, funexp);
        !           206: #endif
        !           207:       insn_before = get_last_insn ();
        !           208: 
        !           209:       /* Cannot pass FUNEXP since emit_library_call insists
        !           210:         on getting a SYMBOL_REF.  But cse will make this SYMBOL_REF
        !           211:         be replaced with the copy we made just above.  */
        !           212:       emit_library_call (gen_rtx (SYMBOL_REF, Pmode,
        !           213:                                  binoptab->handlers[(int) mode].lib_call),
        !           214:                         mode, 2, op0, mode, op1, mode);
        !           215:       target = hard_libcall_value (mode);
        !           216:       temp = copy_to_reg (target);
        !           217:       REG_NOTES (get_last_insn ())
        !           218:        = gen_rtx (EXPR_LIST, REG_EQUAL,
        !           219:                   gen_rtx (binoptab->code, mode, op0, op1),
        !           220:                   gen_rtx (INSN_LIST, REG_RETVAL,
        !           221:                            NEXT_INSN (insn_before), 0));
        !           222:       return temp;
        !           223:     }
        !           224: 
        !           225:   /* It can't be done in this mode.  Can we do it in a wider mode?  */
        !           226: 
        !           227:   if (! (methods == OPTAB_WIDEN || methods == OPTAB_LIB_WIDEN))
        !           228:     return 0;                  /* Caller says, don't even try.  */
        !           229: 
        !           230:   /* Compute the value of METHODS to pass to recursive calls.
        !           231:      Don't allow widening to be tried recursively.  */
        !           232: 
        !           233:   methods = (methods == OPTAB_LIB_WIDEN ? OPTAB_LIB : OPTAB_DIRECT);
        !           234: 
        !           235:   if ((mode == HImode || mode == QImode)
        !           236:       && (binoptab->handlers[(int) SImode].insn_code != CODE_FOR_nothing
        !           237:          || (methods == OPTAB_LIB
        !           238:              && binoptab->handlers[(int) SImode].lib_call)))
        !           239:     {
        !           240:       rtx xop0 = op0, xop1 = op1;
        !           241: 
        !           242:       if (GET_MODE (xop0) != VOIDmode)
        !           243:        {
        !           244:          temp = gen_reg_rtx (SImode);
        !           245:          convert_move (temp, xop0, unsignedp);
        !           246:          xop0 = temp;
        !           247:        }
        !           248:       if (GET_MODE (xop1) != VOIDmode)
        !           249:        {
        !           250:          temp = gen_reg_rtx (SImode);
        !           251:          convert_move (temp, xop1, unsignedp);
        !           252:          xop1 = temp;
        !           253:        }
        !           254: 
        !           255:       temp = expand_binop (SImode, binoptab, xop0, xop1, 0,
        !           256:                           unsignedp, methods);
        !           257:       if (temp)
        !           258:        return gen_lowpart (mode, temp);
        !           259:       else
        !           260:        delete_insns_since (last);
        !           261:     }
        !           262:   if ((mode == HImode || mode == QImode || mode == SImode)
        !           263:       && (binoptab->handlers[(int) DImode].insn_code != CODE_FOR_nothing
        !           264:          || (methods == OPTAB_LIB
        !           265:              && binoptab->handlers[(int) DImode].lib_call)))
        !           266:     {
        !           267:       rtx xop0 = op0, xop1 = op1;
        !           268: 
        !           269:       temp = gen_reg_rtx (DImode);
        !           270:       convert_move (temp, xop0, unsignedp);
        !           271:       xop0 = temp;
        !           272:       temp = gen_reg_rtx (DImode);
        !           273:       convert_move (temp, xop1, unsignedp);
        !           274:       xop1 = temp;
        !           275: 
        !           276:       temp = expand_binop (DImode, binoptab, xop0, xop1, 0,
        !           277:                           unsignedp, methods);
        !           278:       if (temp)
        !           279:        return gen_lowpart (mode, temp);
        !           280:       else
        !           281:        delete_insns_since (last);
        !           282:     }
        !           283:   if (mode == SFmode
        !           284:       && (binoptab->handlers[(int) DFmode].insn_code != CODE_FOR_nothing
        !           285:          || (methods == OPTAB_LIB
        !           286:              && binoptab->handlers[(int) DFmode].lib_call)))
        !           287:     {
        !           288:       rtx xop0 = op0, xop1 = op1;
        !           289: 
        !           290:       temp = gen_reg_rtx (DFmode);
        !           291:       convert_move (temp, xop0, 0);
        !           292:       xop0 = temp;
        !           293:       temp = gen_reg_rtx (DFmode);
        !           294:       convert_move (temp, xop1, 0);
        !           295:       xop1 = temp;
        !           296: 
        !           297:       temp = expand_binop (DFmode, binoptab, xop0, xop1, 0, 0, methods);
        !           298:       if (temp)
        !           299:        {
        !           300:          if (target == 0)
        !           301:            target = gen_reg_rtx (SFmode);
        !           302:          convert_move (target, temp, 0);
        !           303:          return target;
        !           304:        }
        !           305:       else
        !           306:        delete_insns_since (last);
        !           307:     }
        !           308:   return 0;
        !           309: }
        !           310: 
        !           311: /* Generate code to perform an operation specified by BINOPTAB
        !           312:    on operands OP0 and OP1, with two results to TARG1 and TARG2.
        !           313:    We assume that the order of the operands for the instruction
        !           314:    is TARG0, OP0, OP1, TARG1, which would fit a pattern like
        !           315:    [(set TARG0 (operate OP0 OP1)) (set TARG1 (operate ...))].
        !           316: 
        !           317:    Either TARG0 or TARG1 may be zero, but what that means is that
        !           318:    that result is not actually wanted.  We will generate it into
        !           319:    a dummy pseudo-reg and discard it.  They may not both be zero.
        !           320: 
        !           321:    Returns 1 if this operation can be performed; 0 if not.  */
        !           322: 
        !           323: int
        !           324: expand_twoval_binop (binoptab, op0, op1, targ0, targ1, unsignedp)
        !           325:      optab binoptab;
        !           326:      rtx op0, op1;
        !           327:      rtx targ0, targ1;
        !           328:      int unsignedp;
        !           329: {
        !           330:   enum machine_mode mode = GET_MODE (targ0 ? targ0 : targ1);
        !           331: 
        !           332:   op0 = protect_from_queue (op0, 0);
        !           333:   op1 = protect_from_queue (op1, 0);
        !           334: 
        !           335:   if (flag_force_mem)
        !           336:     {
        !           337:       op0 = force_not_mem (op0);
        !           338:       op1 = force_not_mem (op1);
        !           339:     }
        !           340: 
        !           341:   if (targ0)
        !           342:     targ0 = protect_from_queue (targ0, 1);
        !           343:   else
        !           344:     targ0 = gen_reg_rtx (mode);
        !           345:   if (targ1)
        !           346:     targ1 = protect_from_queue (targ1, 1);
        !           347:   else
        !           348:     targ1 = gen_reg_rtx (mode);
        !           349: 
        !           350:   if (binoptab->handlers[(int) mode].insn_code != CODE_FOR_nothing)
        !           351:     {
        !           352:       emit_insn (GEN_FCN (binoptab->handlers[(int) mode].insn_code)
        !           353:                 (targ0, op0, op1, targ1));
        !           354:       return 1;
        !           355:     }
        !           356: 
        !           357:   /* It can't be done in this mode.  Can we do it in a wider mode?  */
        !           358: 
        !           359:   if ((mode == HImode || mode == QImode)
        !           360:       && binoptab->handlers[(int) SImode].insn_code != CODE_FOR_nothing)
        !           361:     {
        !           362:       expand_twoval_binop_convert (binoptab, SImode, op0, op1,
        !           363:                                   targ0, targ1, unsignedp);
        !           364:       return 1;
        !           365:     }
        !           366:   if ((mode == HImode || mode == QImode || mode == SImode)
        !           367:       && binoptab->handlers[(int) DImode].insn_code != CODE_FOR_nothing)
        !           368:     {
        !           369:       expand_twoval_binop_convert (binoptab, DImode, op0, op1,
        !           370:                                   targ0, targ1, unsignedp);
        !           371:       return 1;
        !           372:     }
        !           373:   if (mode == SFmode
        !           374:       && binoptab->handlers[(int) DFmode].insn_code != CODE_FOR_nothing)
        !           375:     {
        !           376:       expand_twoval_binop_convert (binoptab, DFmode, op0, op1,
        !           377:                                   targ0, targ1, unsignedp);
        !           378:       return 1;
        !           379:     }
        !           380:   return 0;
        !           381: }
        !           382: 
        !           383: int
        !           384: expand_twoval_binop_convert (binoptab, mode, op0, op1, targ0, targ1, unsignedp)
        !           385:      register optab binoptab;
        !           386:      register rtx op0, op1, targ0, targ1;
        !           387:      int unsignedp;
        !           388: {
        !           389:   register rtx t0 = gen_reg_rtx (SImode);
        !           390:   register rtx t1 = gen_reg_rtx (SImode);
        !           391:   register rtx temp;
        !           392: 
        !           393:   temp = gen_reg_rtx (SImode);
        !           394:   convert_move (temp, op0, unsignedp);
        !           395:   op0 = temp;
        !           396:   temp = gen_reg_rtx (SImode);
        !           397:   convert_move (temp, op1, unsignedp);
        !           398:   op1 = temp;
        !           399: 
        !           400:   expand_twoval_binop (binoptab, op0, op1, t0, t1, unsignedp);
        !           401:   convert_move (targ0, t0, unsignedp);
        !           402:   convert_move (targ1, t1, unsignedp);
        !           403:   return 1;
        !           404: }
        !           405: 
        !           406: /* Generate code to perform an operation specified by UNOPTAB
        !           407:    on operand OP0, with result having machine-mode MODE.
        !           408: 
        !           409:    UNSIGNEDP is for the case where we have to widen the operands
        !           410:    to perform the operation.  It says to use zero-extension.
        !           411: 
        !           412:    If TARGET is nonzero, the value
        !           413:    is generated there, if it is convenient to do so.
        !           414:    In all cases an rtx is returned for the locus of the value;
        !           415:    this may or may not be TARGET.  */
        !           416: 
        !           417: rtx
        !           418: expand_unop (mode, unoptab, op0, target, unsignedp)
        !           419:      enum machine_mode mode;
        !           420:      optab unoptab;
        !           421:      rtx op0;
        !           422:      rtx target;
        !           423:      int unsignedp;
        !           424: {
        !           425:   register rtx temp;
        !           426: 
        !           427:   op0 = protect_from_queue (op0, 0);
        !           428: 
        !           429:   if (flag_force_mem)
        !           430:     {
        !           431:       op0 = force_not_mem (op0);
        !           432:     }
        !           433: 
        !           434:   if (target)
        !           435:     target = protect_from_queue (target, 1);
        !           436: 
        !           437:   if (unoptab->handlers[(int) mode].insn_code != CODE_FOR_nothing)
        !           438:     {
        !           439:       int icode = (int) unoptab->handlers[(int) mode].insn_code;
        !           440:       enum machine_mode mode0 = insn_operand_mode[icode][1];
        !           441: 
        !           442:       if (target)
        !           443:        temp = target;
        !           444:       else
        !           445:        temp = gen_reg_rtx (mode);
        !           446: 
        !           447:       if (GET_MODE (op0) != VOIDmode
        !           448:          && GET_MODE (op0) != mode0)
        !           449:        op0 = convert_to_mode (mode0, op0, unsignedp);
        !           450: 
        !           451:       /* Now, if insn requires register operands, put operands into regs.  */
        !           452: 
        !           453:       if (! (*insn_operand_predicate[icode][1]) (op0, mode0))
        !           454:        op0 = force_reg (mode0, op0);
        !           455: 
        !           456:       if (! (*insn_operand_predicate[icode][0]) (temp, mode))
        !           457:        temp = gen_reg_rtx (mode);
        !           458: 
        !           459:       emit_insn (GEN_FCN (icode) (temp, op0));
        !           460:       return temp;
        !           461:     }
        !           462:   else if (unoptab->handlers[(int) mode].lib_call)
        !           463:     {
        !           464:       rtx insn_before;
        !           465:       rtx funexp = gen_rtx (SYMBOL_REF, Pmode,
        !           466:                            unoptab->handlers[(int) mode].lib_call);
        !           467: 
        !           468:       /* Pass the address through a pseudoreg, if desired,
        !           469:         before the "beginning" of the library call (for deletion).  */
        !           470: #ifndef NO_FUNCTION_CSE
        !           471:       if (! flag_no_function_cse)
        !           472:        funexp = copy_to_mode_reg (Pmode, funexp);
        !           473: #endif
        !           474:       insn_before = get_last_insn ();
        !           475: 
        !           476:       /* Cannot pass FUNEXP since  emit_library_call insists
        !           477:         on getting a SYMBOL_REF.  But cse will make this SYMBOL_REF
        !           478:         be replaced with the copy we made just above.  */
        !           479:       emit_library_call (gen_rtx (SYMBOL_REF, Pmode,
        !           480:                                  unoptab->handlers[(int) mode].lib_call),
        !           481:                         mode, 1, op0, mode);
        !           482:       target = hard_libcall_value (mode);
        !           483:       temp = copy_to_reg (target);
        !           484:       REG_NOTES (get_last_insn ())
        !           485:        = gen_rtx (EXPR_LIST, REG_EQUAL,
        !           486:                   gen_rtx (unoptab->code, mode, op0),
        !           487:                   gen_rtx (INSN_LIST, REG_RETVAL,
        !           488:                            NEXT_INSN (insn_before), 0));
        !           489:       return temp;
        !           490:     }
        !           491: 
        !           492:   /* It can't be done in this mode.  Can we do it in a wider mode?  */
        !           493: 
        !           494:   if ((mode == HImode || mode == QImode)
        !           495:       && (unoptab->handlers[(int) SImode].insn_code != CODE_FOR_nothing
        !           496:          || unoptab->handlers[(int) SImode].lib_call))
        !           497:     {
        !           498:       if (GET_MODE (op0) != VOIDmode)
        !           499:        {
        !           500:          temp = gen_reg_rtx (SImode);
        !           501:          convert_move (temp, op0, unsignedp);
        !           502:          op0 = temp;
        !           503:        }
        !           504: 
        !           505:       target = expand_unop (SImode, unoptab, op0, 0, unsignedp);
        !           506:       return gen_lowpart (mode, target);
        !           507:     }
        !           508:   if ((mode == HImode || mode == QImode || mode == SImode)
        !           509:       && (unoptab->handlers[(int) DImode].insn_code != CODE_FOR_nothing
        !           510:          || unoptab->handlers[(int) DImode].lib_call))
        !           511:     {
        !           512:       temp = gen_reg_rtx (DImode);
        !           513:       convert_move (temp, op0, unsignedp);
        !           514:       op0 = temp;
        !           515: 
        !           516:       target = expand_unop (DImode, unoptab, op0, 0, unsignedp);
        !           517:       return gen_lowpart (mode, target);
        !           518:     }
        !           519:   if (mode == SFmode
        !           520:       && (unoptab->handlers[(int) DFmode].insn_code != CODE_FOR_nothing
        !           521:          || unoptab->handlers[(int) DFmode].lib_call))
        !           522:     {
        !           523:       temp = gen_reg_rtx (DFmode);
        !           524:       convert_move (temp, op0, 0);
        !           525:       op0 = temp;
        !           526: 
        !           527:       temp = expand_unop (DFmode, unoptab, op0, 0, 0);
        !           528:       if (target == 0)
        !           529:        target = gen_reg_rtx (SFmode);
        !           530:       convert_move (target, temp, 0);
        !           531:       return target;
        !           532:     }
        !           533: 
        !           534:   return 0;
        !           535: }
        !           536: 
        !           537: /* Generate an instruction whose insn-code is INSN_CODE,
        !           538:    with two operands: an output TARGET and an input OP0.
        !           539:    TARGET *must* be nonzero, and the output is always stored there.
        !           540:    CODE is an rtx code such that (CODE OP0) is an rtx that describes
        !           541:    the value that is stored into TARGET.  */
        !           542: 
        !           543: void
        !           544: emit_unop_insn (icode, target, op0, code)
        !           545:      int icode;
        !           546:      rtx target;
        !           547:      rtx op0;
        !           548:      enum rtx_code code;
        !           549: {
        !           550:   register rtx temp;
        !           551:   enum machine_mode mode0 = insn_operand_mode[icode][1];
        !           552:   rtx insn;
        !           553:   rtx prev_insn = get_last_insn ();
        !           554: 
        !           555:   temp = target = protect_from_queue (target, 1);
        !           556: 
        !           557:   op0 = protect_from_queue (op0, 0);
        !           558: 
        !           559:   if (flag_force_mem)
        !           560:     op0 = force_not_mem (op0);
        !           561: 
        !           562:   /* Now, if insn requires register operands, put operands into regs.  */
        !           563: 
        !           564:   if (! (*insn_operand_predicate[icode][1]) (op0, mode0))
        !           565:     op0 = force_reg (mode0, op0);
        !           566: 
        !           567:   if (! (*insn_operand_predicate[icode][0]) (temp, GET_MODE (temp))
        !           568:       || (flag_force_mem && GET_CODE (temp) == MEM))
        !           569:     temp = gen_reg_rtx (GET_MODE (temp));
        !           570: 
        !           571:   insn = emit_insn (GEN_FCN (icode) (temp, op0));
        !           572: 
        !           573:   /* If we just made a multi-insn sequence,
        !           574:      record in the last insn an equivalent expression for its value
        !           575:      and a pointer to the first insn.  This makes cse possible.  */
        !           576:   if (code != UNKNOWN && insn != NEXT_INSN (prev_insn))
        !           577:     REG_NOTES (insn)
        !           578:       = gen_rtx (EXPR_LIST, REG_EQUAL,
        !           579:                 gen_rtx (code, GET_MODE (temp), op0),
        !           580:                 0);
        !           581:   
        !           582:   if (temp != target)
        !           583:     emit_move_insn (target, temp);
        !           584: }
        !           585: 
        !           586: /* Generate code to store zero in X.  */
        !           587: 
        !           588: void
        !           589: emit_clr_insn (x)
        !           590:      rtx x;
        !           591: {
        !           592:   emit_move_insn (x, const0_rtx);
        !           593: }
        !           594: 
        !           595: /* Generate code to store 1 in X
        !           596:    assuming it contains zero beforehand.  */
        !           597: 
        !           598: void
        !           599: emit_0_to_1_insn (x)
        !           600:      rtx x;
        !           601: {
        !           602:   emit_move_insn (x, const1_rtx);
        !           603: }
        !           604: 
        !           605: /* Generate code to compare X with Y
        !           606:    so that the condition codes are set.
        !           607:    If they have mode BLKmode, then SIZE specifies the size of block.  */
        !           608: 
        !           609: void
        !           610: emit_cmp_insn (x, y, size, unsignedp)
        !           611:      rtx x, y;
        !           612:      rtx size;
        !           613:      int unsignedp;
        !           614: {
        !           615:   enum machine_mode mode = GET_MODE (x);
        !           616:   if (mode == VOIDmode) mode = GET_MODE (y);
        !           617:   /* They could both be VOIDmode if both args are immediate constants,
        !           618:      but we should fold that at an earlier stage.
        !           619:      With no special code here, this will call abort,
        !           620:      reminding the programmer to implement such folding.  */
        !           621: 
        !           622:   emit_queue ();
        !           623:   x = protect_from_queue (x, 0);
        !           624:   y = protect_from_queue (y, 0);
        !           625: 
        !           626:   if (mode != BLKmode && flag_force_mem)
        !           627:     {
        !           628:       x = force_not_mem (x);
        !           629:       y = force_not_mem (y);
        !           630:     }
        !           631: 
        !           632:   if (mode == BLKmode)
        !           633:     {
        !           634:       if (size == 0)
        !           635:        abort ();
        !           636: #ifdef HAVE_cmpstrqi
        !           637:       if (HAVE_cmpstrqi
        !           638:          && GET_CODE (size) == CONST_INT
        !           639:          && INTVAL (size) < (1 << BITS_PER_UNIT))
        !           640:        emit_insn (gen_cmpstrqi (x, y, convert_to_mode (SImode, size, 1)));
        !           641:       else
        !           642: #endif
        !           643: #ifdef HAVE_cmpstrsi
        !           644:       if (HAVE_cmpstrsi)
        !           645:        emit_insn (gen_cmpstrsi (x, y, convert_to_mode (SImode, size, 1)));
        !           646:       else
        !           647: #endif
        !           648:        {
        !           649: #ifdef TARGET_MEM_FUNCTIONS
        !           650:          emit_library_call (gen_rtx (SYMBOL_REF, Pmode, "memcmp"),
        !           651:                             SImode, 3, x, Pmode, y, Pmode, size, Pmode);
        !           652: #else
        !           653:          emit_library_call (gen_rtx (SYMBOL_REF, Pmode, "bcmp"),
        !           654:                             SImode, 3, x, Pmode, y, Pmode, size, Pmode);
        !           655: #endif
        !           656:          emit_cmp_insn (hard_libcall_value (SImode), const0_rtx, 0, 0);
        !           657:        }
        !           658:     }
        !           659:   else if ((y == const0_rtx || y == fconst0_rtx || y == dconst0_rtx)
        !           660:           && tst_optab->handlers[(int) mode].insn_code != CODE_FOR_nothing)
        !           661:     {
        !           662:       int icode = (int) tst_optab->handlers[(int) mode].insn_code;
        !           663: 
        !           664:       /* Now, if insn requires register operands, put operands into regs.  */
        !           665:       if (! (*insn_operand_predicate[icode][0])
        !           666:          (x, insn_operand_mode[icode][0]))
        !           667:        x = force_reg (insn_operand_mode[icode][0], x);
        !           668: 
        !           669:       emit_insn (GEN_FCN (icode) (x));
        !           670:     }
        !           671:   else if (cmp_optab->handlers[(int) mode].insn_code != CODE_FOR_nothing)
        !           672:     {
        !           673:       int icode = (int) cmp_optab->handlers[(int) mode].insn_code;
        !           674: 
        !           675:       /* Now, if insn requires register operands, put operands into regs.  */
        !           676:       if (! (*insn_operand_predicate[icode][0])
        !           677:          (x, insn_operand_mode[icode][0]))
        !           678:        x = force_reg (insn_operand_mode[icode][0], x);
        !           679: 
        !           680:       if (! (*insn_operand_predicate[icode][1])
        !           681:          (y, insn_operand_mode[icode][1]))
        !           682:        y = force_reg (insn_operand_mode[icode][1], y);
        !           683: 
        !           684:       emit_insn (GEN_FCN (icode) (x, y));
        !           685:     }
        !           686:   else if ((mode == QImode || mode == HImode)
        !           687:           && cmp_optab->handlers[(int) SImode].insn_code != CODE_FOR_nothing)
        !           688:     {
        !           689:       x = convert_to_mode (SImode, x, unsignedp);
        !           690:       y = convert_to_mode (SImode, y, unsignedp);
        !           691:       emit_cmp_insn (x, y, 0, unsignedp);
        !           692:     }
        !           693:   else if ((mode == QImode || mode == HImode || mode == SImode)
        !           694:           && cmp_optab->handlers[(int) DImode].insn_code != CODE_FOR_nothing)
        !           695:     {
        !           696:       x = convert_to_mode (DImode, x, unsignedp);
        !           697:       y = convert_to_mode (DImode, y, unsignedp);
        !           698:       emit_cmp_insn (x, y, 0, unsignedp);
        !           699:     }
        !           700:   else if (mode == SFmode
        !           701:           && cmp_optab->handlers[(int) DFmode].insn_code != CODE_FOR_nothing)
        !           702:     {
        !           703:       x = convert_to_mode (DFmode, x, unsignedp);
        !           704:       y = convert_to_mode (DFmode, y, unsignedp);
        !           705:       emit_cmp_insn (x, y, 0, unsignedp);
        !           706:     }
        !           707:   else if (cmp_optab->handlers[(int) mode].lib_call)
        !           708:     {
        !           709:       emit_library_call (gen_rtx (SYMBOL_REF, Pmode,
        !           710:                                  cmp_optab->handlers[(int) mode].lib_call),
        !           711:                         SImode, 2, x, mode, y, mode);
        !           712:       emit_cmp_insn (hard_libcall_value (SImode), const0_rtx, 0, 0);
        !           713:     }
        !           714:   else if ((mode == QImode || mode == HImode)
        !           715:           && (cmp_optab->handlers[(int) SImode].insn_code != CODE_FOR_nothing
        !           716:               || cmp_optab->handlers[(int) SImode].lib_call != 0))
        !           717:     {
        !           718:       x = convert_to_mode (SImode, x, unsignedp);
        !           719:       y = convert_to_mode (SImode, y, unsignedp);
        !           720:       emit_cmp_insn (x, y, 0, unsignedp);
        !           721:     }
        !           722:   else if ((mode == QImode || mode == HImode || mode == SImode)
        !           723:           && (cmp_optab->handlers[(int) DImode].insn_code != CODE_FOR_nothing
        !           724:               || cmp_optab->handlers[(int) DImode].lib_call != 0))
        !           725:     {
        !           726:       x = convert_to_mode (DImode, x, unsignedp);
        !           727:       y = convert_to_mode (DImode, y, unsignedp);
        !           728:       emit_cmp_insn (x, y, 0, unsignedp);
        !           729:     }
        !           730:   else if (mode == SFmode
        !           731:           && (cmp_optab->handlers[(int) DFmode].insn_code != CODE_FOR_nothing
        !           732:               || cmp_optab->handlers[(int) DFmode].lib_call != 0))
        !           733:     {
        !           734:       x = convert_to_mode (DFmode, x, unsignedp);
        !           735:       y = convert_to_mode (DFmode, y, unsignedp);
        !           736:       emit_cmp_insn (x, y, 0, unsignedp);
        !           737:     }
        !           738:   else
        !           739:     abort ();
        !           740: }
        !           741: 
        !           742: /* These three functions generate an insn body and return it
        !           743:    rather than emitting the insn.
        !           744: 
        !           745:    They do not protect from queued increments,
        !           746:    because they may be used 1) in protect_from_queue itself
        !           747:    and 2) in other passes where there is no queue.  */
        !           748: 
        !           749: /* Generate and return an insn body to add Y to X.  */
        !           750: 
        !           751: rtx
        !           752: gen_add2_insn (x, y)
        !           753:      rtx x, y;
        !           754: {
        !           755:   return (GEN_FCN (add_optab->handlers[(int) GET_MODE (x)].insn_code)
        !           756:          (x, x, y));
        !           757: }
        !           758: 
        !           759: int
        !           760: have_add2_insn (mode)
        !           761:      enum machine_mode mode;
        !           762: {
        !           763:   return add_optab->handlers[(int) mode].insn_code != CODE_FOR_nothing;
        !           764: }
        !           765: 
        !           766: /* Generate and return an insn body to subtract Y from X.  */
        !           767: 
        !           768: rtx
        !           769: gen_sub2_insn (x, y)
        !           770:      rtx x, y;
        !           771: {
        !           772:   return (GEN_FCN (sub_optab->handlers[(int) GET_MODE (x)].insn_code)
        !           773:          (x, x, y));
        !           774: }
        !           775: 
        !           776: int
        !           777: have_sub2_insn (mode)
        !           778:      enum machine_mode mode;
        !           779: {
        !           780:   return add_optab->handlers[(int) mode].insn_code != CODE_FOR_nothing;
        !           781: }
        !           782: 
        !           783: /* Generate the body of an instruction to copy Y into X.  */
        !           784: 
        !           785: rtx
        !           786: gen_move_insn (x, y)
        !           787:      rtx x, y;
        !           788: {
        !           789:   register enum machine_mode mode = GET_MODE (x);
        !           790:   if (mode == VOIDmode)
        !           791:     mode = GET_MODE (y);
        !           792:   return (GEN_FCN (mov_optab->handlers[(int) mode].insn_code) (x, y));
        !           793: }
        !           794: 
        !           795: /* Tables of patterns for extending one integer mode to another.  */
        !           796: enum insn_code zero_extend_optab[MAX_MACHINE_MODE][MAX_MACHINE_MODE];
        !           797: enum insn_code sign_extend_optab[MAX_MACHINE_MODE][MAX_MACHINE_MODE];
        !           798: 
        !           799: /* Generate the body of an insn to extend Y (with mode MFROM)
        !           800:    into X (with mode MTO).  Do zero-extension if UNSIGNEDP is nonzero.  */
        !           801: 
        !           802: rtx
        !           803: gen_extend_insn (x, y, mto, mfrom, unsignedp)
        !           804:      rtx x, y;
        !           805:      enum machine_mode mto, mfrom;
        !           806:      int unsignedp;
        !           807: {
        !           808:   return (GEN_FCN ((unsignedp ? zero_extend_optab : sign_extend_optab)
        !           809:                   [(int)mto][(int)mfrom])
        !           810:          (x, y));
        !           811: }
        !           812: 
        !           813: static void
        !           814: init_extends ()
        !           815: {
        !           816:   int i;
        !           817:   bzero (sign_extend_optab, sizeof sign_extend_optab);
        !           818:   bzero (zero_extend_optab, sizeof zero_extend_optab);
        !           819:   sign_extend_optab[(int) SImode][(int) HImode] = CODE_FOR_extendhisi2;
        !           820:   sign_extend_optab[(int) SImode][(int) QImode] = CODE_FOR_extendqisi2;
        !           821:   sign_extend_optab[(int) HImode][(int) QImode] = CODE_FOR_extendqihi2;
        !           822:   zero_extend_optab[(int) SImode][(int) HImode] = CODE_FOR_zero_extendhisi2;
        !           823:   zero_extend_optab[(int) SImode][(int) QImode] = CODE_FOR_zero_extendqisi2;
        !           824:   zero_extend_optab[(int) HImode][(int) QImode] = CODE_FOR_zero_extendqihi2;
        !           825: }
        !           826: 
        !           827: /* can_fix_p and can_float_p say whether the target machine
        !           828:    can directly convert a given fixed point type to
        !           829:    a given floating point type, or vice versa.  */
        !           830: 
        !           831: static rtxfun fixtab[2][2][2];
        !           832: static rtxfun fixtrunctab[2][2][2];
        !           833: static rtxfun floattab[2][2];
        !           834: 
        !           835: /* *TRUNCP_PTR is set to 1 if it is necessary to output
        !           836:    an explicit FTRUNC insn before the fix insn; otherwise 0.  */
        !           837: 
        !           838: rtxfun
        !           839: can_fix_p (fixmode, fltmode, unsignedp, truncp_ptr)
        !           840:      enum machine_mode fltmode, fixmode;
        !           841:      int unsignedp;
        !           842:      int *truncp_ptr;
        !           843: {
        !           844:   *truncp_ptr = 0;
        !           845:   if (fixtrunctab[fltmode != SFmode][fixmode == DImode][unsignedp])
        !           846:     return fixtrunctab[fltmode != SFmode][fixmode == DImode][unsignedp];
        !           847:   if (ftrunc_optab->handlers[(int) fltmode].insn_code != CODE_FOR_nothing)
        !           848:     {
        !           849:       *truncp_ptr = 1;
        !           850:       return fixtab[fltmode != SFmode][fixmode == DImode][unsignedp];
        !           851:     }
        !           852:   return 0;
        !           853: }
        !           854: 
        !           855: rtxfun
        !           856: can_float_p (fltmode, fixmode)
        !           857:      enum machine_mode fixmode, fltmode;
        !           858: {
        !           859:   return floattab[fltmode != SFmode][fixmode == DImode];
        !           860: }
        !           861: 
        !           862: void
        !           863: init_fixtab ()
        !           864: {
        !           865: #ifdef HAVE_fixsfsi2
        !           866:   if (HAVE_fixsfsi2)
        !           867:     fixtab[0][0][0] = gen_fixsfsi2;
        !           868: #endif
        !           869: #ifdef HAVE_fixsfdi2
        !           870:   if (HAVE_fixsfdi2)
        !           871:     fixtab[0][1][0] = gen_fixsfdi2;
        !           872: #endif
        !           873: #ifdef HAVE_fixdfsi2
        !           874:   if (HAVE_fixdfsi2)
        !           875:     fixtab[1][0][0] = gen_fixdfsi2;
        !           876: #endif
        !           877: #ifdef HAVE_fixdfdi2
        !           878:   if (HAVE_fixdfdi2)
        !           879:     fixtab[1][1][0] = gen_fixdfdi2;
        !           880: #endif
        !           881: 
        !           882: #ifdef HAVE_fixunssfsi2
        !           883:   if (HAVE_fixunssfsi2)
        !           884:     fixtab[0][0][1] = gen_fixunssfsi2;
        !           885: #endif
        !           886: #ifdef HAVE_fixunssfdi2
        !           887:   if (HAVE_fixunssfdi2)
        !           888:     fixtab[0][1][1] = gen_fixunssfdi2;
        !           889: #endif
        !           890: #ifdef HAVE_fixunsdfsi2
        !           891:   if (HAVE_fixunsdfsi2)
        !           892:     fixtab[1][0][1] = gen_fixunsdfsi2;
        !           893: #endif
        !           894: #ifdef HAVE_fixunsdfdi2
        !           895:   if (HAVE_fixunsdfdi2)
        !           896:     fixtab[1][1][1] = gen_fixunsdfdi2;
        !           897: #endif
        !           898: 
        !           899: #ifdef HAVE_fix_truncsfsi2
        !           900:   if (HAVE_fix_truncsfsi2)
        !           901:     fixtrunctab[0][0][0] = gen_fix_truncsfsi2;
        !           902: #endif
        !           903: #ifdef HAVE_fix_truncsfdi2
        !           904:   if (HAVE_fix_truncsfdi2)
        !           905:     fixtrunctab[0][1][0] = gen_fix_truncsfdi2;
        !           906: #endif
        !           907: #ifdef HAVE_fix_truncdfsi2
        !           908:   if (HAVE_fix_truncdfsi2)
        !           909:     fixtrunctab[1][0][0] = gen_fix_truncdfsi2;
        !           910: #endif
        !           911: #ifdef HAVE_fix_truncdfdi2
        !           912:   if (HAVE_fix_truncdfdi2)
        !           913:     fixtrunctab[1][1][0] = gen_fix_truncdfdi2;
        !           914: #endif
        !           915: 
        !           916: #ifdef HAVE_fixuns_truncsfsi2
        !           917:   if (HAVE_fixuns_truncsfsi2)
        !           918:     fixtrunctab[0][0][1] = gen_fixuns_truncsfsi2;
        !           919: #endif
        !           920: #ifdef HAVE_fixuns_truncsfdi2
        !           921:   if (HAVE_fixuns_truncsfdi2)
        !           922:     fixtrunctab[0][1][1] = gen_fixuns_truncsfdi2;
        !           923: #endif
        !           924: #ifdef HAVE_fixuns_truncdfsi2
        !           925:   if (HAVE_fixuns_truncdfsi2)
        !           926:     fixtrunctab[1][0][1] = gen_fixuns_truncdfsi2;
        !           927: #endif
        !           928: #ifdef HAVE_fixuns_truncdfdi2
        !           929:   if (HAVE_fixuns_truncdfdi2)
        !           930:     fixtrunctab[1][1][1] = gen_fixuns_truncdfdi2;
        !           931: #endif
        !           932: 
        !           933: #ifdef FIXUNS_TRUNC_LIKE_FIX_TRUNC
        !           934:   /* This flag says the same insns that convert to a signed fixnum
        !           935:      also convert validly to an unsigned one.  */
        !           936:   {
        !           937:     int i;
        !           938:     int j;
        !           939:     for (i = 0; i < 2; i++)
        !           940:       for (j = 0; j < 2; j++)
        !           941:        fixtrunctab[i][j][1] = fixtrunctab[i][j][0];
        !           942:   }
        !           943: #endif
        !           944: }
        !           945: 
        !           946: void
        !           947: init_floattab ()
        !           948: {
        !           949: #ifdef HAVE_floatsisf2
        !           950:   if (HAVE_floatsisf2)
        !           951:     floattab[0][0] = gen_floatsisf2;
        !           952: #endif
        !           953: #ifdef HAVE_floatdisf2
        !           954:   if (HAVE_floatdisf2)
        !           955:     floattab[0][1] = gen_floatdisf2;
        !           956: #endif
        !           957: #ifdef HAVE_floatsidf2
        !           958:   if (HAVE_floatsidf2)
        !           959:     floattab[1][0] = gen_floatsidf2;
        !           960: #endif
        !           961: #ifdef HAVE_floatdidf2
        !           962:   if (HAVE_floatdidf2)
        !           963:     floattab[1][1] = gen_floatdidf2;
        !           964: #endif
        !           965: }
        !           966: 
        !           967: /* Generate code to convert FROM to floating point
        !           968:    and store in TO.  FROM must be fixed point.
        !           969:    UNSIGNEDP nonzero means regard FROM as unsigned.
        !           970:    Normally this is done by correcting the final value
        !           971:    if it is negative.  */
        !           972: 
        !           973: void
        !           974: expand_float (real_to, from, unsignedp)
        !           975:      rtx real_to, from;
        !           976:      int unsignedp;
        !           977: {
        !           978:   register rtxfun fun;
        !           979:   register rtx intermediate = 0, to;
        !           980: 
        !           981:   to = real_to = protect_from_queue (real_to, 1);
        !           982:   from = protect_from_queue (from, 0);
        !           983: 
        !           984:   if (flag_force_mem)
        !           985:     {
        !           986:       from = force_not_mem (from);
        !           987:     }
        !           988: 
        !           989:   /* If we are about to do some arithmetic to correct for an
        !           990:      unsigned operand, do it in a register.  */
        !           991: 
        !           992:   if (unsignedp && GET_CODE (to) != REG)
        !           993:     to = gen_reg_rtx (GET_MODE (to));
        !           994: 
        !           995:   /* Now do the basic conversion.  Do it in the specified modes if possible;
        !           996:      otherwise convert either input, output or both with wider mode;
        !           997:      otherwise use a library call.  */
        !           998: 
        !           999:   if (fun = can_float_p (GET_MODE (to), GET_MODE (from)))
        !          1000:     {
        !          1001:       emit_insn ((*fun) (to, from));
        !          1002:     }
        !          1003:   else if (GET_MODE (to) == SFmode
        !          1004:           && (fun = can_float_p (GET_MODE (from), DFmode)))
        !          1005:     {
        !          1006:       to = gen_reg_rtx (DFmode);
        !          1007:       emit_insn ((*fun) (to, from));
        !          1008:     }
        !          1009:   /* If we can't float a SI, maybe we can float a DI.
        !          1010:      If so, convert to DI and then float.  */
        !          1011:   else if (GET_MODE (from) != DImode
        !          1012:           && (can_float_p (GET_MODE (to), DImode)
        !          1013:               || can_float_p (DFmode, DImode)))
        !          1014:     {
        !          1015:       register rtx tem = gen_reg_rtx (DImode);
        !          1016:       convert_move (tem, from, unsignedp);
        !          1017:       from = tem;
        !          1018:       /* If we extend FROM then we don't need to correct
        !          1019:         the final value for unsignedness.  */
        !          1020:       unsignedp = 0;
        !          1021: 
        !          1022:       if (fun = can_float_p (GET_MODE (to), GET_MODE (from)))
        !          1023:        {
        !          1024:          emit_insn ((*fun) (to, from));
        !          1025:        }
        !          1026:       else if (fun = can_float_p (DFmode, DImode))
        !          1027:        {
        !          1028:          to = gen_reg_rtx (DFmode);
        !          1029:          emit_insn ((*fun) (to, from));
        !          1030:        }
        !          1031:     }
        !          1032:   /* No hardware instruction available; call a library
        !          1033:      to convert from SImode or DImode into DFmode.  */
        !          1034:   else
        !          1035:     {
        !          1036:       if (GET_MODE_SIZE (GET_MODE (from)) < GET_MODE_SIZE (SImode))
        !          1037:        {
        !          1038:          from = convert_to_mode (SImode, from, unsignedp);
        !          1039:          unsignedp = 0;
        !          1040:        }
        !          1041:       emit_library_call (gen_rtx (SYMBOL_REF, Pmode,
        !          1042:                                  (GET_MODE (from) == SImode ? "_floatsidf"
        !          1043:                                   : "_floatdidf")),
        !          1044:                         DFmode, 1, from, GET_MODE (from));
        !          1045:       to = copy_to_reg (hard_libcall_value (DFmode));
        !          1046:     }
        !          1047: 
        !          1048:   /* If FROM was unsigned but we treated it as signed,
        !          1049:      then in the case where it is negative (and therefore TO is negative),
        !          1050:      correct its value by 2**bitwidth.  */
        !          1051: 
        !          1052:   if (unsignedp)
        !          1053:     {
        !          1054:       rtx label = gen_label_rtx ();
        !          1055:       rtx temp;
        !          1056:       double offset;
        !          1057:       double ldexp ();
        !          1058: 
        !          1059:       do_pending_stack_adjust ();
        !          1060:       emit_cmp_insn (to, GET_MODE (to) == DFmode ? dconst0_rtx : fconst0_rtx,
        !          1061:                     0, 0);
        !          1062:       emit_jump_insn (gen_bge (label));
        !          1063:       offset = ldexp (1.0, GET_MODE_BITSIZE (GET_MODE (from)));
        !          1064:       temp = expand_binop (GET_MODE (to), add_optab, to,
        !          1065:                           immed_real_const_1 (offset, GET_MODE (to)),
        !          1066:                           to, 0, OPTAB_LIB_WIDEN);
        !          1067:       if (temp != to)
        !          1068:        emit_move_insn (to, temp);
        !          1069:       do_pending_stack_adjust ();
        !          1070:       emit_label (label);
        !          1071:     }
        !          1072: 
        !          1073:   /* Copy result to requested destination
        !          1074:      if we have been computing in a temp location.  */
        !          1075: 
        !          1076:   if (to != real_to)
        !          1077:     {
        !          1078:       if (GET_MODE (real_to) == GET_MODE (to))
        !          1079:        emit_move_insn (real_to, to);
        !          1080:       else
        !          1081:        convert_move (real_to, to, 0);
        !          1082:     }
        !          1083: }
        !          1084: 
        !          1085: /* expand_fix: generate code to convert FROM to fixed point
        !          1086:    and store in TO.  FROM must be floating point.  */
        !          1087: 
        !          1088: static rtx
        !          1089: ftruncify (x)
        !          1090:      rtx x;
        !          1091: {
        !          1092:   rtx temp = gen_reg_rtx (GET_MODE (x));
        !          1093:   return expand_unop (GET_MODE (x), ftrunc_optab, x, temp, 0);
        !          1094: }
        !          1095: 
        !          1096: void
        !          1097: expand_fix (to, from, unsignedp)
        !          1098:      register rtx to, from;
        !          1099:      int unsignedp;
        !          1100: {
        !          1101:   register rtxfun fun;
        !          1102:   register rtx target;
        !          1103:   int must_trunc = 0;
        !          1104: 
        !          1105:   to = protect_from_queue (to, 1);
        !          1106:   from = protect_from_queue (from, 0);
        !          1107: 
        !          1108:   if (flag_force_mem)
        !          1109:     {
        !          1110:       from = force_not_mem (from);
        !          1111:     }
        !          1112: 
        !          1113:   if (fun = can_fix_p (GET_MODE (to), GET_MODE (from), unsignedp, &must_trunc))
        !          1114:     {
        !          1115:       if (must_trunc)
        !          1116:        from = ftruncify (from);
        !          1117:       emit_insn ((*fun) (to, from));
        !          1118:       return;
        !          1119:     }
        !          1120: 
        !          1121:   if (GET_MODE (to) != DImode
        !          1122:       && (fun = can_fix_p (DImode, GET_MODE (from), unsignedp, &must_trunc)))
        !          1123:     {
        !          1124:       register rtx temp = gen_reg_rtx (DImode);
        !          1125:       if (must_trunc)
        !          1126:        from = ftruncify (from);
        !          1127:       emit_insn ((*fun) (temp, from));
        !          1128:       convert_move (to, temp, unsignedp);
        !          1129:       return;
        !          1130:     }
        !          1131: 
        !          1132:   if (GET_MODE (from) != DFmode)
        !          1133:     {
        !          1134:       register rtx tem = gen_reg_rtx (DFmode);
        !          1135:       convert_move (tem, from, 0);
        !          1136:       from = tem;
        !          1137:     }
        !          1138: 
        !          1139:   if (fun = can_fix_p (GET_MODE (to), GET_MODE (from), unsignedp, &must_trunc))
        !          1140:     {
        !          1141:       if (must_trunc)
        !          1142:        from = ftruncify (from);
        !          1143:       emit_insn ((*fun) (to, from));
        !          1144:       return;
        !          1145:     }
        !          1146: 
        !          1147:   if (fun = can_fix_p (DImode, DFmode, unsignedp, &must_trunc))
        !          1148:     {
        !          1149:       if (must_trunc)
        !          1150:        from = ftruncify (from);
        !          1151:       target = gen_reg_rtx (DImode);
        !          1152:       emit_insn ((*fun) (target, from));
        !          1153:     }
        !          1154:   else if (GET_MODE (to) != DImode)
        !          1155:     {
        !          1156:       emit_library_call (gen_rtx (SYMBOL_REF, Pmode,
        !          1157:                                  unsignedp ? "_fixunsdfsi"
        !          1158:                                  : "_fixdfsi"),
        !          1159:                         SImode, 1, from, DFmode);
        !          1160:       target = copy_to_reg (hard_libcall_value (SImode));
        !          1161:     }
        !          1162:   else
        !          1163:     {
        !          1164:       emit_library_call (gen_rtx (SYMBOL_REF, Pmode,
        !          1165:                                  unsignedp ? "_fixunsdfdi"
        !          1166:                                  : "_fixdfdi"),
        !          1167:                         DImode, 1, from, DFmode);
        !          1168:       target = copy_to_reg (hard_libcall_value (DImode));
        !          1169:     }
        !          1170: 
        !          1171:   if (GET_MODE (to) == DImode)
        !          1172:     emit_move_insn (to, target);
        !          1173:   else
        !          1174:     convert_move (to, target, 0);
        !          1175: }
        !          1176: 
        !          1177: static optab
        !          1178: init_optab (code)
        !          1179:      enum rtx_code code;
        !          1180: {
        !          1181:   int i;
        !          1182:   optab op = (optab) malloc (sizeof (struct optab));
        !          1183:   op->code = code;
        !          1184:   for (i = 0; i < NUM_MACHINE_MODES; i++)
        !          1185:     {
        !          1186:       op->handlers[i].insn_code = CODE_FOR_nothing;
        !          1187:       op->handlers[i].lib_call = 0;
        !          1188:     }
        !          1189:   return op;
        !          1190: }
        !          1191: 
        !          1192: /* Call this once to initialize the contents of the optabs
        !          1193:    appropriately for the current target machine.  */
        !          1194: 
        !          1195: void
        !          1196: init_optabs ()
        !          1197: {
        !          1198:   init_fixtab ();
        !          1199:   init_floattab ();
        !          1200:   init_comparisons ();
        !          1201:   init_extends ();
        !          1202: 
        !          1203:   add_optab = init_optab (PLUS);
        !          1204:   sub_optab = init_optab (MINUS);
        !          1205:   smul_optab = init_optab (MULT);
        !          1206:   umul_optab = init_optab (UMULT);
        !          1207:   smul_widen_optab = init_optab (MULT);
        !          1208:   umul_widen_optab = init_optab (UMULT);
        !          1209:   sdiv_optab = init_optab (DIV);
        !          1210:   sdivmod_optab = init_optab (UNKNOWN);
        !          1211:   udiv_optab = init_optab (UDIV);
        !          1212:   udivmod_optab = init_optab (UNKNOWN);
        !          1213:   smod_optab = init_optab (MOD);
        !          1214:   umod_optab = init_optab (UMOD);
        !          1215:   flodiv_optab = init_optab (DIV);
        !          1216:   ftrunc_optab = init_optab (UNKNOWN);
        !          1217:   and_optab = init_optab (AND);
        !          1218:   andcb_optab = init_optab (UNKNOWN);
        !          1219:   ior_optab = init_optab (IOR);
        !          1220:   xor_optab = init_optab (XOR);
        !          1221:   ashl_optab = init_optab (ASHIFT);
        !          1222:   ashr_optab = init_optab (ASHIFTRT);
        !          1223:   lshl_optab = init_optab (LSHIFT);
        !          1224:   lshr_optab = init_optab (LSHIFTRT);
        !          1225:   rotl_optab = init_optab (ROTATE);
        !          1226:   rotr_optab = init_optab (ROTATERT);
        !          1227:   mov_optab = init_optab (UNKNOWN);
        !          1228:   movstrict_optab = init_optab (UNKNOWN);
        !          1229:   cmp_optab = init_optab (UNKNOWN);
        !          1230:   tst_optab = init_optab (UNKNOWN);
        !          1231:   neg_optab = init_optab (NEG);
        !          1232:   abs_optab = init_optab (ABS);
        !          1233:   one_cmpl_optab = init_optab (NOT);
        !          1234:   ffs_optab = init_optab (FFS);
        !          1235: 
        !          1236: #ifdef HAVE_addqi3
        !          1237:   if (HAVE_addqi3)
        !          1238:     add_optab->handlers[(int) QImode].insn_code = CODE_FOR_addqi3;
        !          1239: #endif
        !          1240: #ifdef HAVE_addhi3
        !          1241:   if (HAVE_addhi3)
        !          1242:     add_optab->handlers[(int) HImode].insn_code = CODE_FOR_addhi3;
        !          1243: #endif
        !          1244: #ifdef HAVE_addsi3
        !          1245:   if (HAVE_addsi3)
        !          1246:     add_optab->handlers[(int) SImode].insn_code = CODE_FOR_addsi3;
        !          1247: #endif
        !          1248: #ifdef HAVE_adddi3
        !          1249:   if (HAVE_adddi3)
        !          1250:     add_optab->handlers[(int) DImode].insn_code = CODE_FOR_adddi3;
        !          1251: #endif
        !          1252: #ifdef HAVE_addsf3
        !          1253:   if (HAVE_addsf3)
        !          1254:     add_optab->handlers[(int) SFmode].insn_code = CODE_FOR_addsf3;
        !          1255: #endif
        !          1256: #ifdef HAVE_adddf3
        !          1257:   if (HAVE_adddf3)
        !          1258:     add_optab->handlers[(int) DFmode].insn_code = CODE_FOR_adddf3;
        !          1259: #endif
        !          1260:   add_optab->handlers[(int) DImode].lib_call = "_adddi3";
        !          1261:   add_optab->handlers[(int) SFmode].lib_call = "_addsf3";
        !          1262:   add_optab->handlers[(int) DFmode].lib_call = "_adddf3";
        !          1263: 
        !          1264: #ifdef HAVE_subqi3
        !          1265:   if (HAVE_subqi3)
        !          1266:     sub_optab->handlers[(int) QImode].insn_code = CODE_FOR_subqi3;
        !          1267: #endif
        !          1268: #ifdef HAVE_subhi3
        !          1269:   if (HAVE_subhi3)
        !          1270:     sub_optab->handlers[(int) HImode].insn_code = CODE_FOR_subhi3;
        !          1271: #endif
        !          1272: #ifdef HAVE_subsi3
        !          1273:   if (HAVE_subsi3)
        !          1274:     sub_optab->handlers[(int) SImode].insn_code = CODE_FOR_subsi3;
        !          1275: #endif
        !          1276: #ifdef HAVE_subdi3
        !          1277:   if (HAVE_subdi3)
        !          1278:     sub_optab->handlers[(int) DImode].insn_code = CODE_FOR_subdi3;
        !          1279: #endif
        !          1280: #ifdef HAVE_subsf3
        !          1281:   if (HAVE_subsf3)
        !          1282:     sub_optab->handlers[(int) SFmode].insn_code = CODE_FOR_subsf3;
        !          1283: #endif
        !          1284: #ifdef HAVE_subdf3
        !          1285:   if (HAVE_subdf3)
        !          1286:     sub_optab->handlers[(int) DFmode].insn_code = CODE_FOR_subdf3;
        !          1287: #endif
        !          1288:   sub_optab->handlers[(int) DImode].lib_call = "_subdi3";
        !          1289:   sub_optab->handlers[(int) SFmode].lib_call = "_subsf3";
        !          1290:   sub_optab->handlers[(int) DFmode].lib_call = "_subdf3";
        !          1291: 
        !          1292: #ifdef HAVE_mulqi3
        !          1293:   if (HAVE_mulqi3)
        !          1294:     smul_optab->handlers[(int) QImode].insn_code = CODE_FOR_mulqi3;
        !          1295: #endif
        !          1296: #ifdef HAVE_mulhi3
        !          1297:   if (HAVE_mulhi3)
        !          1298:     smul_optab->handlers[(int) HImode].insn_code = CODE_FOR_mulhi3;
        !          1299: #endif
        !          1300: #ifdef HAVE_mulsi3
        !          1301:   if (HAVE_mulsi3)
        !          1302:     smul_optab->handlers[(int) SImode].insn_code = CODE_FOR_mulsi3;
        !          1303: #endif
        !          1304: #ifdef HAVE_muldi3
        !          1305:   if (HAVE_muldi3)
        !          1306:     smul_optab->handlers[(int) DImode].insn_code = CODE_FOR_muldi3;
        !          1307: #endif
        !          1308: #ifdef HAVE_mulsf3
        !          1309:   if (HAVE_mulsf3)
        !          1310:     smul_optab->handlers[(int) SFmode].insn_code = CODE_FOR_mulsf3;
        !          1311: #endif
        !          1312: #ifdef HAVE_muldf3
        !          1313:   if (HAVE_muldf3)
        !          1314:     smul_optab->handlers[(int) DFmode].insn_code = CODE_FOR_muldf3;
        !          1315: #endif
        !          1316:   smul_optab->handlers[(int) SImode].lib_call = "_mulsi3";
        !          1317:   smul_optab->handlers[(int) DImode].lib_call = "_muldi3";
        !          1318:   smul_optab->handlers[(int) SFmode].lib_call = "_mulsf3";
        !          1319:   smul_optab->handlers[(int) DFmode].lib_call = "_muldf3";
        !          1320: 
        !          1321: #ifdef HAVE_mulqihi3
        !          1322:   if (HAVE_mulqihi3)
        !          1323:     smul_widen_optab->handlers[(int) HImode].insn_code = CODE_FOR_mulqihi3;
        !          1324: #endif
        !          1325: #ifdef HAVE_mulhisi3
        !          1326:   if (HAVE_mulhisi3)
        !          1327:     smul_widen_optab->handlers[(int) SImode].insn_code = CODE_FOR_mulhisi3;
        !          1328: #endif
        !          1329: #ifdef HAVE_mulsidi3
        !          1330:   if (HAVE_mulsidi3)
        !          1331:     smul_widen_optab->handlers[(int) DImode].insn_code = CODE_FOR_mulsidi3;
        !          1332: #endif
        !          1333: 
        !          1334: #ifdef HAVE_umulqi3
        !          1335:   if (HAVE_umulqi3)
        !          1336:     umul_optab->handlers[(int) QImode].insn_code = CODE_FOR_umulqi3;
        !          1337: #endif
        !          1338: #ifdef HAVE_umulhi3
        !          1339:   if (HAVE_umulhi3)
        !          1340:     umul_optab->handlers[(int) HImode].insn_code = CODE_FOR_umulhi3;
        !          1341: #endif
        !          1342: #ifdef HAVE_umulsi3
        !          1343:   if (HAVE_umulsi3)
        !          1344:     umul_optab->handlers[(int) SImode].insn_code = CODE_FOR_umulsi3;
        !          1345: #endif
        !          1346: #ifdef HAVE_umuldi3
        !          1347:   if (HAVE_umuldi3)
        !          1348:     umul_optab->handlers[(int) DImode].insn_code = CODE_FOR_umuldi3;
        !          1349: #endif
        !          1350: #ifdef HAVE_umulsf3
        !          1351:   if (HAVE_umulsf3)
        !          1352:     umul_optab->handlers[(int) SFmode].insn_code = CODE_FOR_umulsf3;
        !          1353: #endif
        !          1354: #ifdef HAVE_umuldf3
        !          1355:   if (HAVE_umuldf3)
        !          1356:     umul_optab->handlers[(int) DFmode].insn_code = CODE_FOR_umuldf3;
        !          1357: #endif
        !          1358:   umul_optab->handlers[(int) SImode].lib_call = "_umulsi3";
        !          1359:   umul_optab->handlers[(int) DImode].lib_call = "_umuldi3";
        !          1360:   umul_optab->handlers[(int) SFmode].lib_call = "_umulsf3";
        !          1361:   umul_optab->handlers[(int) DFmode].lib_call = "_umuldf3";
        !          1362: 
        !          1363: #ifdef HAVE_umulqihi3
        !          1364:   if (HAVE_umulqihi3)
        !          1365:     umul_widen_optab->handlers[(int) HImode].insn_code = CODE_FOR_umulqihi3;
        !          1366: #endif
        !          1367: #ifdef HAVE_umulhisi3
        !          1368:   if (HAVE_umulhisi3)
        !          1369:     umul_widen_optab->handlers[(int) SImode].insn_code = CODE_FOR_umulhisi3;
        !          1370: #endif
        !          1371: #ifdef HAVE_umulsidi3
        !          1372:   if (HAVE_umulsidi3)
        !          1373:     umul_widen_optab->handlers[(int) DImode].insn_code = CODE_FOR_umulsidi3;
        !          1374: #endif
        !          1375: 
        !          1376: #ifdef HAVE_divqi3
        !          1377:   if (HAVE_divqi3)
        !          1378:     sdiv_optab->handlers[(int) QImode].insn_code = CODE_FOR_divqi3;
        !          1379: #endif
        !          1380: #ifdef HAVE_divhi3
        !          1381:   if (HAVE_divhi3)
        !          1382:     sdiv_optab->handlers[(int) HImode].insn_code = CODE_FOR_divhi3;
        !          1383: #endif
        !          1384: #ifdef HAVE_divsi3
        !          1385:   if (HAVE_divsi3)
        !          1386:     sdiv_optab->handlers[(int) SImode].insn_code = CODE_FOR_divsi3;
        !          1387: #endif
        !          1388: #ifdef HAVE_divdi3
        !          1389:   if (HAVE_divdi3)
        !          1390:     sdiv_optab->handlers[(int) DImode].insn_code = CODE_FOR_divdi3;
        !          1391: #endif
        !          1392:   sdiv_optab->handlers[(int) SImode].lib_call = "_divsi3";
        !          1393:   sdiv_optab->handlers[(int) DImode].lib_call = "_divdi3";
        !          1394: 
        !          1395: #ifdef HAVE_udivqi3
        !          1396:   if (HAVE_udivqi3)
        !          1397:     udiv_optab->handlers[(int) QImode].insn_code = CODE_FOR_udivqi3;
        !          1398: #endif
        !          1399: #ifdef HAVE_udivhi3
        !          1400:   if (HAVE_udivhi3)
        !          1401:     udiv_optab->handlers[(int) HImode].insn_code = CODE_FOR_udivhi3;
        !          1402: #endif
        !          1403: #ifdef HAVE_udivsi3
        !          1404:   if (HAVE_udivsi3)
        !          1405:     udiv_optab->handlers[(int) SImode].insn_code = CODE_FOR_udivsi3;
        !          1406: #endif
        !          1407: #ifdef HAVE_udivdi3
        !          1408:   if (HAVE_udivdi3)
        !          1409:     udiv_optab->handlers[(int) DImode].insn_code = CODE_FOR_udivdi3;
        !          1410: #endif
        !          1411: #ifdef UDIVSI3_LIBCALL
        !          1412:   udiv_optab->handlers[(int) SImode].lib_call = UDIVSI3_LIBCALL;
        !          1413: #else
        !          1414:   udiv_optab->handlers[(int) SImode].lib_call = "_udivsi3";
        !          1415: #endif
        !          1416:   udiv_optab->handlers[(int) DImode].lib_call = "_udivdi3";
        !          1417: 
        !          1418: #ifdef HAVE_divmodqi4
        !          1419:   if (HAVE_divmodqi4)
        !          1420:     sdivmod_optab->handlers[(int) QImode].insn_code = CODE_FOR_divmodqi4;
        !          1421: #endif
        !          1422: #ifdef HAVE_divmodhi4
        !          1423:   if (HAVE_divmodhi4)
        !          1424:     sdivmod_optab->handlers[(int) HImode].insn_code = CODE_FOR_divmodhi4;
        !          1425: #endif
        !          1426: #ifdef HAVE_divmodsi4
        !          1427:   if (HAVE_divmodsi4)
        !          1428:     sdivmod_optab->handlers[(int) SImode].insn_code = CODE_FOR_divmodsi4;
        !          1429: #endif
        !          1430: #ifdef HAVE_divmoddi4
        !          1431:   if (HAVE_divmoddi4)
        !          1432:     sdivmod_optab->handlers[(int) DImode].insn_code = CODE_FOR_divmoddi4;
        !          1433: #endif
        !          1434: 
        !          1435: #ifdef HAVE_udivmodqi4
        !          1436:   if (HAVE_udivmodqi4)
        !          1437:     udivmod_optab->handlers[(int) QImode].insn_code = CODE_FOR_udivmodqi4;
        !          1438: #endif
        !          1439: #ifdef HAVE_udivmodhi4
        !          1440:   if (HAVE_udivmodhi4)
        !          1441:     udivmod_optab->handlers[(int) HImode].insn_code = CODE_FOR_udivmodhi4;
        !          1442: #endif
        !          1443: #ifdef HAVE_udivmodsi4
        !          1444:   if (HAVE_udivmodsi4)
        !          1445:     udivmod_optab->handlers[(int) SImode].insn_code = CODE_FOR_udivmodsi4;
        !          1446: #endif
        !          1447: #ifdef HAVE_udivmoddi4
        !          1448:   if (HAVE_udivmoddi4)
        !          1449:     udivmod_optab->handlers[(int) DImode].insn_code = CODE_FOR_udivmoddi4;
        !          1450: #endif
        !          1451: 
        !          1452: #ifdef HAVE_modqi3
        !          1453:   if (HAVE_modqi3)
        !          1454:     smod_optab->handlers[(int) QImode].insn_code = CODE_FOR_modqi3;
        !          1455: #endif
        !          1456: #ifdef HAVE_modhi3
        !          1457:   if (HAVE_modhi3)
        !          1458:     smod_optab->handlers[(int) HImode].insn_code = CODE_FOR_modhi3;
        !          1459: #endif
        !          1460: #ifdef HAVE_modsi3
        !          1461:   if (HAVE_modsi3)
        !          1462:     smod_optab->handlers[(int) SImode].insn_code = CODE_FOR_modsi3;
        !          1463: #endif
        !          1464: #ifdef HAVE_moddi3
        !          1465:   if (HAVE_moddi3)
        !          1466:     smod_optab->handlers[(int) DImode].insn_code = CODE_FOR_moddi3;
        !          1467: #endif
        !          1468:   smod_optab->handlers[(int) SImode].lib_call = "_modsi3";
        !          1469:   smod_optab->handlers[(int) DImode].lib_call = "_moddi3";
        !          1470: 
        !          1471: #ifdef HAVE_umodqi3
        !          1472:   if (HAVE_umodqi3)
        !          1473:     umod_optab->handlers[(int) QImode].insn_code = CODE_FOR_umodqi3;
        !          1474: #endif
        !          1475: #ifdef HAVE_umodhi3
        !          1476:   if (HAVE_umodhi3)
        !          1477:     umod_optab->handlers[(int) HImode].insn_code = CODE_FOR_umodhi3;
        !          1478: #endif
        !          1479: #ifdef HAVE_umodsi3
        !          1480:   if (HAVE_umodsi3)
        !          1481:     umod_optab->handlers[(int) SImode].insn_code = CODE_FOR_umodsi3;
        !          1482: #endif
        !          1483: #ifdef HAVE_umoddi3
        !          1484:   if (HAVE_umoddi3)
        !          1485:     umod_optab->handlers[(int) DImode].insn_code = CODE_FOR_umoddi3;
        !          1486: #endif
        !          1487: #ifdef UMODSI3_LIBCALL
        !          1488:   umod_optab->handlers[(int) SImode].lib_call = UMODSI3_LIBCALL;
        !          1489: #else
        !          1490:   umod_optab->handlers[(int) SImode].lib_call = "_umodsi3";
        !          1491: #endif
        !          1492:   umod_optab->handlers[(int) DImode].lib_call = "_umoddi3";
        !          1493: 
        !          1494: #ifdef HAVE_divsf3
        !          1495:   if (HAVE_divsf3)
        !          1496:     flodiv_optab->handlers[(int) SFmode].insn_code = CODE_FOR_divsf3;
        !          1497: #endif
        !          1498: #ifdef HAVE_divdf3
        !          1499:   if (HAVE_divdf3)
        !          1500:     flodiv_optab->handlers[(int) DFmode].insn_code = CODE_FOR_divdf3;
        !          1501: #endif
        !          1502:   flodiv_optab->handlers[(int) SFmode].lib_call = "_divsf3";
        !          1503:   flodiv_optab->handlers[(int) DFmode].lib_call = "_divdf3";
        !          1504: 
        !          1505: #ifdef HAVE_ftruncsf2
        !          1506:   if (HAVE_ftruncsf2)
        !          1507:     ftrunc_optab->handlers[(int) SFmode].insn_code = CODE_FOR_ftruncsf2;
        !          1508: #endif
        !          1509: #ifdef HAVE_ftruncdf2
        !          1510:   if (HAVE_ftruncdf2)
        !          1511:     ftrunc_optab->handlers[(int) DFmode].insn_code = CODE_FOR_ftruncdf2;
        !          1512: #endif
        !          1513:   ftrunc_optab->handlers[(int) SFmode].lib_call = "_ftruncsf2";
        !          1514:   ftrunc_optab->handlers[(int) DFmode].lib_call = "_ftruncsf2";
        !          1515: 
        !          1516: #ifdef HAVE_andqi3
        !          1517:   if (HAVE_andqi3)
        !          1518:     and_optab->handlers[(int) QImode].insn_code = CODE_FOR_andqi3;
        !          1519: #endif
        !          1520: #ifdef HAVE_andhi3
        !          1521:   if (HAVE_andhi3)
        !          1522:     and_optab->handlers[(int) HImode].insn_code = CODE_FOR_andhi3;
        !          1523: #endif
        !          1524: #ifdef HAVE_andsi3
        !          1525:   if (HAVE_andsi3)
        !          1526:     and_optab->handlers[(int) SImode].insn_code = CODE_FOR_andsi3;
        !          1527: #endif
        !          1528:   and_optab->handlers[(int) DImode].lib_call = "_anddi3";
        !          1529: 
        !          1530: #ifdef HAVE_andcbqi3
        !          1531:   if (HAVE_andcbqi3)
        !          1532:     andcb_optab->handlers[(int) QImode].insn_code = CODE_FOR_andcbqi3;
        !          1533: #endif
        !          1534: #ifdef HAVE_andcbhi3
        !          1535:   if (HAVE_andcbhi3)
        !          1536:     andcb_optab->handlers[(int) HImode].insn_code = CODE_FOR_andcbhi3;
        !          1537: #endif
        !          1538: #ifdef HAVE_andcbsi3
        !          1539:   if (HAVE_andcbsi3)
        !          1540:     andcb_optab->handlers[(int) SImode].insn_code = CODE_FOR_andcbsi3;
        !          1541: #endif
        !          1542:   andcb_optab->handlers[(int) DImode].lib_call = "_andcbdi3";
        !          1543: 
        !          1544: #ifdef HAVE_iorqi3
        !          1545:   if (HAVE_iorqi3)
        !          1546:     ior_optab->handlers[(int) QImode].insn_code = CODE_FOR_iorqi3;
        !          1547: #endif
        !          1548: #ifdef HAVE_iorhi3
        !          1549:   if (HAVE_iorhi3)
        !          1550:     ior_optab->handlers[(int) HImode].insn_code = CODE_FOR_iorhi3;
        !          1551: #endif
        !          1552: #ifdef HAVE_iorsi3
        !          1553:   if (HAVE_iorsi3)
        !          1554:     ior_optab->handlers[(int) SImode].insn_code = CODE_FOR_iorsi3;
        !          1555: #endif
        !          1556:   ior_optab->handlers[(int) DImode].lib_call = "_iordi3";
        !          1557: 
        !          1558: #ifdef HAVE_xorqi3
        !          1559:   if (HAVE_xorqi3)
        !          1560:     xor_optab->handlers[(int) QImode].insn_code = CODE_FOR_xorqi3;
        !          1561: #endif
        !          1562: #ifdef HAVE_xorhi3
        !          1563:   if (HAVE_xorhi3)
        !          1564:     xor_optab->handlers[(int) HImode].insn_code = CODE_FOR_xorhi3;
        !          1565: #endif
        !          1566: #ifdef HAVE_xorsi3
        !          1567:   if (HAVE_xorsi3)
        !          1568:     xor_optab->handlers[(int) SImode].insn_code = CODE_FOR_xorsi3;
        !          1569: #endif
        !          1570:   xor_optab->handlers[(int) DImode].lib_call = "_xordi3";
        !          1571: 
        !          1572: #ifdef HAVE_ashlqi3
        !          1573:   if (HAVE_ashlqi3)
        !          1574:     ashl_optab->handlers[(int) QImode].insn_code = CODE_FOR_ashlqi3;
        !          1575: #endif
        !          1576: #ifdef HAVE_ashlhi3
        !          1577:   if (HAVE_ashlhi3)
        !          1578:     ashl_optab->handlers[(int) HImode].insn_code = CODE_FOR_ashlhi3;
        !          1579: #endif
        !          1580: #ifdef HAVE_ashlsi3
        !          1581:   if (HAVE_ashlsi3)
        !          1582:     ashl_optab->handlers[(int) SImode].insn_code = CODE_FOR_ashlsi3;
        !          1583: #endif
        !          1584: #ifdef HAVE_ashldi3
        !          1585:   if (HAVE_ashldi3)
        !          1586:     ashl_optab->handlers[(int) DImode].insn_code = CODE_FOR_ashldi3;
        !          1587: #endif
        !          1588:   ashl_optab->handlers[(int) SImode].lib_call = "_ashlsi3";
        !          1589:   ashl_optab->handlers[(int) DImode].lib_call = "_ashldi3";
        !          1590: 
        !          1591: #ifdef HAVE_ashrqi3
        !          1592:   if (HAVE_ashrqi3)
        !          1593:     ashr_optab->handlers[(int) QImode].insn_code = CODE_FOR_ashrqi3;
        !          1594: #endif
        !          1595: #ifdef HAVE_ashrhi3
        !          1596:   if (HAVE_ashrhi3)
        !          1597:     ashr_optab->handlers[(int) HImode].insn_code = CODE_FOR_ashrhi3;
        !          1598: #endif
        !          1599: #ifdef HAVE_ashrsi3
        !          1600:   if (HAVE_ashrsi3)
        !          1601:     ashr_optab->handlers[(int) SImode].insn_code = CODE_FOR_ashrsi3;
        !          1602: #endif
        !          1603: #ifdef HAVE_ashrdi3
        !          1604:   if (HAVE_ashrdi3)
        !          1605:     ashr_optab->handlers[(int) DImode].insn_code = CODE_FOR_ashrdi3;
        !          1606: #endif
        !          1607:   ashr_optab->handlers[(int) SImode].lib_call = "_ashrsi3";
        !          1608:   ashr_optab->handlers[(int) DImode].lib_call = "_ashrdi3";
        !          1609: 
        !          1610: #ifdef HAVE_lshlqi3
        !          1611:   if (HAVE_lshlqi3)
        !          1612:     lshl_optab->handlers[(int) QImode].insn_code = CODE_FOR_lshlqi3;
        !          1613: #endif
        !          1614: #ifdef HAVE_lshlhi3
        !          1615:   if (HAVE_lshlhi3)
        !          1616:     lshl_optab->handlers[(int) HImode].insn_code = CODE_FOR_lshlhi3;
        !          1617: #endif
        !          1618: #ifdef HAVE_lshlsi3
        !          1619:   if (HAVE_lshlsi3)
        !          1620:     lshl_optab->handlers[(int) SImode].insn_code = CODE_FOR_lshlsi3;
        !          1621: #endif
        !          1622: #ifdef HAVE_lshldi3
        !          1623:   if (HAVE_lshldi3)
        !          1624:     lshl_optab->handlers[(int) DImode].insn_code = CODE_FOR_lshldi3;
        !          1625: #endif
        !          1626:   lshl_optab->handlers[(int) SImode].lib_call = "_lshlsi3";
        !          1627:   lshl_optab->handlers[(int) DImode].lib_call = "_lshldi3";
        !          1628: 
        !          1629: #ifdef HAVE_lshrqi3
        !          1630:   if (HAVE_lshrqi3)
        !          1631:     lshr_optab->handlers[(int) QImode].insn_code = CODE_FOR_lshrqi3;
        !          1632: #endif
        !          1633: #ifdef HAVE_lshrhi3
        !          1634:   if (HAVE_lshrhi3)
        !          1635:     lshr_optab->handlers[(int) HImode].insn_code = CODE_FOR_lshrhi3;
        !          1636: #endif
        !          1637: #ifdef HAVE_lshrsi3
        !          1638:   if (HAVE_lshrsi3)
        !          1639:     lshr_optab->handlers[(int) SImode].insn_code = CODE_FOR_lshrsi3;
        !          1640: #endif
        !          1641: #ifdef HAVE_lshrdi3
        !          1642:   if (HAVE_lshrdi3)
        !          1643:     lshr_optab->handlers[(int) DImode].insn_code = CODE_FOR_lshrdi3;
        !          1644: #endif
        !          1645:   lshr_optab->handlers[(int) SImode].lib_call = "_lshrsi3";
        !          1646:   lshr_optab->handlers[(int) DImode].lib_call = "_lshrdi3";
        !          1647: 
        !          1648: #ifdef HAVE_rotlqi3
        !          1649:   if (HAVE_rotlqi3)
        !          1650:     rotl_optab->handlers[(int) QImode].insn_code = CODE_FOR_rotlqi3;
        !          1651: #endif
        !          1652: #ifdef HAVE_rotlhi3
        !          1653:   if (HAVE_rotlhi3)
        !          1654:     rotl_optab->handlers[(int) HImode].insn_code = CODE_FOR_rotlhi3;
        !          1655: #endif
        !          1656: #ifdef HAVE_rotlsi3
        !          1657:   if (HAVE_rotlsi3)
        !          1658:     rotl_optab->handlers[(int) SImode].insn_code = CODE_FOR_rotlsi3;
        !          1659: #endif
        !          1660: #ifdef HAVE_rotldi3
        !          1661:   if (HAVE_rotldi3)
        !          1662:     rotl_optab->handlers[(int) DImode].insn_code = CODE_FOR_rotldi3;
        !          1663: #endif
        !          1664:   rotl_optab->handlers[(int) SImode].lib_call = "_rotlsi3";
        !          1665:   rotl_optab->handlers[(int) DImode].lib_call = "_rotldi3";
        !          1666: 
        !          1667: #ifdef HAVE_rotrqi3
        !          1668:   if (HAVE_rotrqi3)
        !          1669:     rotr_optab->handlers[(int) QImode].insn_code = CODE_FOR_rotrqi3;
        !          1670: #endif
        !          1671: #ifdef HAVE_rotrhi3
        !          1672:   if (HAVE_rotrhi3)
        !          1673:     rotr_optab->handlers[(int) HImode].insn_code = CODE_FOR_rotrhi3;
        !          1674: #endif
        !          1675: #ifdef HAVE_rotrsi3
        !          1676:   if (HAVE_rotrsi3)
        !          1677:     rotr_optab->handlers[(int) SImode].insn_code = CODE_FOR_rotrsi3;
        !          1678: #endif
        !          1679: #ifdef HAVE_rotrdi3
        !          1680:   if (HAVE_rotrdi3)
        !          1681:     rotr_optab->handlers[(int) DImode].insn_code = CODE_FOR_rotrdi3;
        !          1682: #endif
        !          1683:   rotr_optab->handlers[(int) SImode].lib_call = "_rotrsi3";
        !          1684:   rotr_optab->handlers[(int) DImode].lib_call = "_rotrdi3";
        !          1685: 
        !          1686: #ifdef HAVE_negqi2
        !          1687:   if (HAVE_negqi2)
        !          1688:     neg_optab->handlers[(int) QImode].insn_code = CODE_FOR_negqi2;
        !          1689: #endif
        !          1690: #ifdef HAVE_neghi2
        !          1691:   if (HAVE_neghi2)
        !          1692:     neg_optab->handlers[(int) HImode].insn_code = CODE_FOR_neghi2;
        !          1693: #endif
        !          1694: #ifdef HAVE_negsi2
        !          1695:   if (HAVE_negsi2)
        !          1696:     neg_optab->handlers[(int) SImode].insn_code = CODE_FOR_negsi2;
        !          1697: #endif
        !          1698: #ifdef HAVE_negsf2
        !          1699:   if (HAVE_negsf2)
        !          1700:     neg_optab->handlers[(int) SFmode].insn_code = CODE_FOR_negsf2;
        !          1701: #endif
        !          1702: #ifdef HAVE_negdf2
        !          1703:   if (HAVE_negdf2)
        !          1704:     neg_optab->handlers[(int) DFmode].insn_code = CODE_FOR_negdf2;
        !          1705: #endif
        !          1706:   neg_optab->handlers[(int) SImode].lib_call = "_negsi2"; 
        !          1707:   neg_optab->handlers[(int) DImode].lib_call = "_negdi2";
        !          1708:   neg_optab->handlers[(int) SFmode].lib_call = "_negsf2";
        !          1709:   neg_optab->handlers[(int) DFmode].lib_call = "_negdf2";
        !          1710: 
        !          1711: #ifdef HAVE_absqi2
        !          1712:   if (HAVE_absqi2)
        !          1713:     abs_optab->handlers[(int) QImode].insn_code = CODE_FOR_absqi2;
        !          1714: #endif
        !          1715: #ifdef HAVE_abshi2
        !          1716:   if (HAVE_abshi2)
        !          1717:     abs_optab->handlers[(int) HImode].insn_code = CODE_FOR_abshi2;
        !          1718: #endif
        !          1719: #ifdef HAVE_abssi2
        !          1720:   if (HAVE_abssi2)
        !          1721:     abs_optab->handlers[(int) SImode].insn_code = CODE_FOR_abssi2;
        !          1722: #endif
        !          1723: #ifdef HAVE_abssf2
        !          1724:   if (HAVE_abssf2)
        !          1725:     abs_optab->handlers[(int) SFmode].insn_code = CODE_FOR_abssf2;
        !          1726: #endif
        !          1727: #ifdef HAVE_absdf2
        !          1728:   if (HAVE_absdf2)
        !          1729:     abs_optab->handlers[(int) DFmode].insn_code = CODE_FOR_absdf2;
        !          1730: #endif
        !          1731:   /* No library calls here!  If there is no abs instruction,
        !          1732:      expand_expr will generate a conditional negation.  */
        !          1733: 
        !          1734: #ifdef HAVE_one_cmplqi2
        !          1735:   if (HAVE_one_cmplqi2)
        !          1736:     one_cmpl_optab->handlers[(int) QImode].insn_code = CODE_FOR_one_cmplqi2;
        !          1737: #endif
        !          1738: #ifdef HAVE_one_cmplhi2
        !          1739:   if (HAVE_one_cmplhi2)
        !          1740:     one_cmpl_optab->handlers[(int) HImode].insn_code = CODE_FOR_one_cmplhi2;
        !          1741: #endif
        !          1742: #ifdef HAVE_one_cmplsi2
        !          1743:   if (HAVE_one_cmplsi2)
        !          1744:     one_cmpl_optab->handlers[(int) SImode].insn_code = CODE_FOR_one_cmplsi2;
        !          1745: #endif
        !          1746:   one_cmpl_optab->handlers[(int) SImode].lib_call = "_one_cmplsi2"; 
        !          1747:   one_cmpl_optab->handlers[(int) DImode].lib_call = "_one_cmpldi2";
        !          1748: 
        !          1749: #ifdef HAVE_ffsqi2
        !          1750:   if (HAVE_ffsqi2)
        !          1751:     ffs_optab->handlers[(int) QImode].insn_code = CODE_FOR_ffsqi2;
        !          1752: #endif
        !          1753: #ifdef HAVE_ffshi2
        !          1754:   if (HAVE_ffshi2)
        !          1755:     ffs_optab->handlers[(int) HImode].insn_code = CODE_FOR_ffshi2;
        !          1756: #endif
        !          1757: #ifdef HAVE_ffssi2
        !          1758:   if (HAVE_ffssi2)
        !          1759:     ffs_optab->handlers[(int) SImode].insn_code = CODE_FOR_ffssi2;
        !          1760: #endif
        !          1761:   ffs_optab->handlers[(int) SImode].lib_call = "ffs"; 
        !          1762: 
        !          1763: #ifdef HAVE_movqi
        !          1764:   if (HAVE_movqi)
        !          1765:     mov_optab->handlers[(int) QImode].insn_code = CODE_FOR_movqi;
        !          1766: #endif
        !          1767: #ifdef HAVE_movhi
        !          1768:   if (HAVE_movhi)
        !          1769:     mov_optab->handlers[(int) HImode].insn_code = CODE_FOR_movhi;
        !          1770: #endif
        !          1771: #ifdef HAVE_movsi
        !          1772:   if (HAVE_movsi)
        !          1773:     mov_optab->handlers[(int) SImode].insn_code = CODE_FOR_movsi;
        !          1774: #endif
        !          1775: #ifdef HAVE_movdi
        !          1776:   if (HAVE_movdi)
        !          1777:     mov_optab->handlers[(int) DImode].insn_code = CODE_FOR_movdi;
        !          1778: #endif
        !          1779: #ifdef HAVE_movsf
        !          1780:   if (HAVE_movsf)
        !          1781:     mov_optab->handlers[(int) SFmode].insn_code = CODE_FOR_movsf;
        !          1782: #endif
        !          1783: #ifdef HAVE_movdf
        !          1784:   if (HAVE_movdf)
        !          1785:     mov_optab->handlers[(int) DFmode].insn_code = CODE_FOR_movdf;
        !          1786: #endif
        !          1787: 
        !          1788: #ifdef HAVE_movstrictqi
        !          1789:   if (HAVE_movstrictqi)
        !          1790:     movstrict_optab->handlers[(int) QImode].insn_code = CODE_FOR_movstrictqi;
        !          1791: #endif
        !          1792: #ifdef HAVE_movstricthi
        !          1793:   if (HAVE_movstricthi)
        !          1794:     movstrict_optab->handlers[(int) HImode].insn_code = CODE_FOR_movstricthi;
        !          1795: #endif
        !          1796: #ifdef HAVE_movstrictsi
        !          1797:   if (HAVE_movstrictsi)
        !          1798:     movstrict_optab->handlers[(int) SImode].insn_code = CODE_FOR_movstrictsi;
        !          1799: #endif
        !          1800: #ifdef HAVE_movstrictdi
        !          1801:   if (HAVE_movstrictdi)
        !          1802:     movstrict_optab->handlers[(int) DImode].insn_code = CODE_FOR_movstrictdi;
        !          1803: #endif
        !          1804: 
        !          1805: #ifdef HAVE_cmpqi
        !          1806:   if (HAVE_cmpqi)
        !          1807:     cmp_optab->handlers[(int) QImode].insn_code = CODE_FOR_cmpqi;
        !          1808: #endif
        !          1809: #ifdef HAVE_cmphi
        !          1810:   if (HAVE_cmphi)
        !          1811:     cmp_optab->handlers[(int) HImode].insn_code = CODE_FOR_cmphi;
        !          1812: #endif
        !          1813: #ifdef HAVE_cmpsi
        !          1814:   if (HAVE_cmpsi)
        !          1815:     cmp_optab->handlers[(int) SImode].insn_code = CODE_FOR_cmpsi;
        !          1816: #endif
        !          1817: #ifdef HAVE_cmpsf
        !          1818:   if (HAVE_cmpsf)
        !          1819:     cmp_optab->handlers[(int) SFmode].insn_code = CODE_FOR_cmpsf;
        !          1820: #endif
        !          1821: #ifdef HAVE_cmpdf
        !          1822:   if (HAVE_cmpdf)
        !          1823:     cmp_optab->handlers[(int) DFmode].insn_code = CODE_FOR_cmpdf;
        !          1824: #endif
        !          1825: #ifdef HAVE_tstqi
        !          1826:   if (HAVE_tstqi)
        !          1827:     tst_optab->handlers[(int) QImode].insn_code = CODE_FOR_tstqi;
        !          1828: #endif
        !          1829: #ifdef HAVE_tsthi
        !          1830:   if (HAVE_tsthi)
        !          1831:     tst_optab->handlers[(int) HImode].insn_code = CODE_FOR_tsthi;
        !          1832: #endif
        !          1833: #ifdef HAVE_tstsi
        !          1834:   if (HAVE_tstsi)
        !          1835:     tst_optab->handlers[(int) SImode].insn_code = CODE_FOR_tstsi;
        !          1836: #endif
        !          1837: #ifdef HAVE_tstsf
        !          1838:   if (HAVE_tstsf)
        !          1839:     tst_optab->handlers[(int) SFmode].insn_code = CODE_FOR_tstsf;
        !          1840: #endif
        !          1841: #ifdef HAVE_tstdf
        !          1842:   if (HAVE_tstdf)
        !          1843:     tst_optab->handlers[(int) DFmode].insn_code = CODE_FOR_tstdf;
        !          1844: #endif
        !          1845:   cmp_optab->handlers[(int) SImode].lib_call = "_cmpsi2"; 
        !          1846:   cmp_optab->handlers[(int) DImode].lib_call = "_cmpdi2";
        !          1847:   cmp_optab->handlers[(int) SFmode].lib_call = "_cmpsf2";
        !          1848:   cmp_optab->handlers[(int) DFmode].lib_call = "_cmpdf2";
        !          1849: }

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