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/*  Small compiler - Peephole optimizer "sequences" strings (plain
 *                   and compressed formats)
 *
 *  Copyright (c) ITB CompuPhase, 2000-2003
 *
 *  This software is provided "as-is", without any express or implied warranty.
 *  In no event will the authors be held liable for any damages arising from
 *  the use of this software.
 *
 *  Permission is granted to anyone to use this software for any purpose,
 *  including commercial applications, and to alter it and redistribute it
 *  freely, subject to the following restrictions:
 *
 *  1.  The origin of this software must not be misrepresented; you must not
 *      claim that you wrote the original software. If you use this software in
 *      a product, an acknowledgment in the product documentation would be
 *      appreciated but is not required.
 *  2.  Altered source versions must be plainly marked as such, and must not be
 *      misrepresented as being the original software.
 *  3.  This notice may not be removed or altered from any source distribution.
 *
 *  Version: $Id: embryo_cc_sc7.scp 35497 2008-08-17 07:44:18Z raster $
 */

int         strexpand(char *dest, unsigned char *source, int maxlen,
			      unsigned char pairtable[128][2]);

#define SCPACK_TERMINATOR ,	/* end each section with a comma */

#define SCPACK_TABLE sequences_table
/*-*SCPACK start of pair table, do not change or remove this line */
unsigned char       sequences_table[][2] = {
   {32, 37}, {114, 105}, {112, 129}, {46, 130}, {49, 33}, {128, 132}, {97, 100},
      {46, 97}, {135, 108}, {136, 116}, {111, 134}, {108, 138}, {50, 33}, {115,
									   104},
      {128, 140}, {137, 33},
   {46, 115}, {117, 141}, {112, 145}, {131, 133}, {139, 144}, {112, 143}, {131,
									   142},
      {115, 116}, {111, 149}, {112, 152}, {131, 33}, {134, 100}, {110, 151},
      {111, 156}, {99, 157}, {59, 36},
   {146, 154}, {148, 150}, {112, 33}, {120, 162}, {101, 163}, {159, 164}, {137,
									   133},
      {46, 99}, {122, 101}, {110, 100}, {155, 114}, {101, 113}, {168, 114},
      {147, 160}, {51, 33}, {128, 174},
   {103, 33}, {133, 165}, {104, 176}, {99, 178}, {120, 179}, {171, 33}, {106,
									 172},
      {173, 161}, {155, 33}, {108, 167}, {117, 169}, {115, 175}, {186, 187},
      {153, 184}, {141, 185}, {111, 188},
   {98, 191}, {105, 100}, {115, 103}, {115, 108}, {193, 120}, {182, 133}, {114,
									   33},
      {166, 161}, {190, 131}, {137, 142}, {169, 33}, {97, 202}, {139, 147},
      {172, 111}, {158, 147}, {139, 150},
   {105, 33}, {101, 115}, {209, 115}, {114, 116}, {148, 147}, {171, 133}, {189,
									   139},
      {32, 140}, {146, 167}, {196, 170}, {158, 183}, {170, 183}, {199, 192},
      {108, 196}, {97, 198}, {194, 211},
   {46, 208}, {195, 210}, {200, 215}, {112, 222}, {159, 227}, {46, 98}, {118,
									 101},
      {111, 230}, {109, 231}, {146, 143}, {99, 144}, {158, 150}, {97, 149},
      {203, 153}, {52, 33}, {225, 33},
   {158, 166}, {194, 181}, {195, 181}, {201, 180}, {223, 198}, {153, 203}, {214,
									    224},
      {100, 101}, {128, 238}, {119, 236}, {249, 237}, {105, 110}, {115, 250},
      {232, 143}, {205, 154}
};
/*-*SCPACK end of pair table, do not change or remove this line */

#define seqsize(o,p)    (opcodes(o)+opargs(p))
typedef struct
{
   char               *find;
   char               *replace;
   int                 savesize;	/* number of bytes saved (in bytecode) */
} SEQUENCE;
static SEQUENCE     sequences_cmp[] = {
   /* A very common sequence in four varieties
    *    load.s.pri n1           load.s.pri n2
    *    push.pri                load.s.alt n1
    *    load.s.pri n2           -
    *    pop.alt                 -
    *    --------------------------------------
    *    load.pri n1             load.s.pri n2
    *    push.pri                load.alt n1
    *    load.s.pri n2           -
    *    pop.alt                 -
    *    --------------------------------------
    *    load.s.pri n1           load.pri n2
    *    push.pri                load.s.alt n1
    *    load.pri n2             -
    *    pop.alt                 -
    *    --------------------------------------
    *    load.pri n1             load.pri n2
    *    push.pri                load.alt n1
    *    load.pri n2             -
    *    pop.alt                 -
    */
   {
#ifdef SCPACK
    "load.s.pri %1!push.pri!load.s.pri %2!pop.alt!",
    "load.s.pri %2!load.s.alt %1!",
#else
    "\224\267\231",
    "\241\224\246",
#endif
    seqsize(4, 2) - seqsize(2, 2)},
   {
#ifdef SCPACK
    "load.pri %1!push.pri!load.s.pri %2!pop.alt!",
    "load.s.pri %2!load.alt %1!",
#else
    "\213\267\231",
    "\241\213\246",
#endif
    seqsize(4, 2) - seqsize(2, 2)},
   {
#ifdef SCPACK
    "load.s.pri %1!push.pri!load.pri %2!pop.alt!",
    "load.pri %2!load.s.alt %1!",
#else
    "\224\255\317\231",
    "\317\224\246",
#endif
    seqsize(4, 2) - seqsize(2, 2)},
   {
#ifdef SCPACK
    "load.pri %1!push.pri!load.pri %2!pop.alt!",
    "load.pri %2!load.alt %1!",
#else
    "\213\255\317\231",
    "\317\213\246",
#endif
    seqsize(4, 2) - seqsize(2, 2)},
   /* (#1#) The above also occurs with "addr.pri" (array
    * indexing) as the first line; so that adds 2 cases.
    */
   {
#ifdef SCPACK
    "addr.pri %1!push.pri!load.s.pri %2!pop.alt!",
    "addr.alt %1!load.s.pri %2!",
#else
    "\333\231",
    "\252\307",
#endif
    seqsize(4, 2) - seqsize(2, 2)},
   {
#ifdef SCPACK
    "addr.pri %1!push.pri!load.pri %2!pop.alt!",
    "addr.alt %1!load.pri %2!",
#else
    "\252\255\317\231",
    "\252\246\317",
#endif
    seqsize(4, 2) - seqsize(2, 2)},
   /* And the same sequence with const.pri as either the first
    * or the second load instruction: four more cases.
    */
   {
#ifdef SCPACK
    "const.pri %1!push.pri!load.s.pri %2!pop.alt!",
    "load.s.pri %2!const.alt %1!",
#else
    "\332\231",
    "\241\360",
#endif
    seqsize(4, 2) - seqsize(2, 2)},
   {
#ifdef SCPACK
    "const.pri %1!push.pri!load.pri %2!pop.alt!",
    "load.pri %2!const.alt %1!",
#else
    "\236\255\317\231",
    "\317\360",
#endif
    seqsize(4, 2) - seqsize(2, 2)},
   {
#ifdef SCPACK
    "load.s.pri %1!push.pri!const.pri %2!pop.alt!",
    "const.pri %2!load.s.alt %1!",
#else
    "\224\255\353\231",
    "\353\224\246",
#endif
    seqsize(4, 2) - seqsize(2, 2)},
   {
#ifdef SCPACK
    "load.pri %1!push.pri!const.pri %2!pop.alt!",
    "const.pri %2!load.alt %1!",
#else
    "\213\255\353\231",
    "\353\213\246",
#endif
    seqsize(4, 2) - seqsize(2, 2)},
   /* The same as above, but now with "addr.pri" (array
    * indexing) on the first line and const.pri on
    * the second.
    */
   {
#ifdef SCPACK
    "addr.pri %1!push.pri!const.pri %2!pop.alt!",
    "addr.alt %1!const.pri %2!",
#else
    "\252\255\353\231",
    "\252\246\353",
#endif
    seqsize(4, 2) - seqsize(2, 2)},
   /* ??? add references */
   /* Chained relational operators can contain sequences like:
    *    move.pri                load.s.pri n1
    *    push.pri                -
    *    load.s.pri n1           -
    *    pop.alt                 -
    * The above also accurs for "load.pri" and for "const.pri",
    * so add another two cases.
    */
   {
#ifdef SCPACK
    "move.pri!push.pri!load.s.pri %1!pop.alt!",
    "load.s.pri %1!",
#else
    "\350\232\240\324\231",
    "\324",
#endif
    seqsize(4, 1) - seqsize(1, 1)},
   {
#ifdef SCPACK
    "move.pri!push.pri!load.pri %1!pop.alt!",
    "load.pri %1!",
#else
    "\350\232\240\314\231",
    "\314",
#endif
    seqsize(4, 1) - seqsize(1, 1)},
   {
#ifdef SCPACK
    "move.pri!push.pri!const.pri %1!pop.alt!",
    "const.pri %1!",
#else
    "\350\232\240\316\231",
    "\316",
#endif
    seqsize(4, 1) - seqsize(1, 1)},
   /* More optimizations for chained relational operators; the
    * continuation sequences can be simplified if they turn out
    * to be termination sequences:
    *    xchg                    sless       also for sless, sgeq and sleq
    *    sgrtr                   pop.alt
    *    swap.alt                and
    *    and                     ;$exp
    *    pop.alt                 -
    *    ;$exp                   -
    *    --------------------------------------
    *    xchg                    sless       also for sless, sgeq and sleq
    *    sgrtr                   pop.alt
    *    swap.alt                and
    *    and                     jzer n1
    *    pop.alt                 -
    *    jzer n1                 -
    *    --------------------------------------
    *    xchg                    jsgeq  n1   also for sless, sgeq and sleq
    *    sgrtr                   ;$exp       (occurs for non-chained comparisons)
    *    jzer n1                 -
    *    ;$exp                   -
    *    --------------------------------------
    *    xchg                    sless       also for sless, sgeq and sleq
    *    sgrtr                   ;$exp       (occurs for non-chained comparisons)
    *    ;$exp                   -
    */
   {
#ifdef SCPACK
    "xchg!sgrtr!swap.alt!and!pop.alt!;$exp!",
    "sless!pop.alt!and!;$exp!",
#else
    "\264\364\374\245",
    "\357\365\245",
#endif
    seqsize(5, 0) - seqsize(3, 0)},
   {
#ifdef SCPACK
    "xchg!sless!swap.alt!and!pop.alt!;$exp!",
    "sgrtr!pop.alt!and!;$exp!",
#else
    "\264\357\374\245",
    "\364\365\245",
#endif
    seqsize(5, 0) - seqsize(3, 0)},
   {
#ifdef SCPACK
    "xchg!sgeq!swap.alt!and!pop.alt!;$exp!",
    "sleq!pop.alt!and!;$exp!",
#else
    "\264\361\374\245",
    "\362\365\245",
#endif
    seqsize(5, 0) - seqsize(3, 0)},
   {
#ifdef SCPACK
    "xchg!sleq!swap.alt!and!pop.alt!;$exp!",
    "sgeq!pop.alt!and!;$exp!",
#else
    "\264\362\374\245",
    "\361\365\245",
#endif
    seqsize(5, 0) - seqsize(3, 0)},
   {
#ifdef SCPACK
    "xchg!sgrtr!swap.alt!and!pop.alt!jzer %1!",
    "sless!pop.alt!and!jzer %1!",
#else
    "\264\364\374\305",
    "\357\365\305",
#endif
    seqsize(5, 0) - seqsize(3, 0)},
   {
#ifdef SCPACK
    "xchg!sless!swap.alt!and!pop.alt!jzer %1!",
    "sgrtr!pop.alt!and!jzer %1!",
#else
    "\264\357\374\305",
    "\364\365\305",
#endif
    seqsize(5, 0) - seqsize(3, 0)},
   {
#ifdef SCPACK
    "xchg!sgeq!swap.alt!and!pop.alt!jzer %1!",
    "sleq!pop.alt!and!jzer %1!",
#else
    "\264\361\374\305",
    "\362\365\305",
#endif
    seqsize(5, 0) - seqsize(3, 0)},
   {
#ifdef SCPACK
    "xchg!sleq!swap.alt!and!pop.alt!jzer %1!",
    "sgeq!pop.alt!and!jzer %1!",
#else
    "\264\362\374\305",
    "\361\365\305",
#endif
    seqsize(5, 0) - seqsize(3, 0)},
   {
#ifdef SCPACK
    "xchg!sgrtr!jzer %1!;$exp!",
    "jsgeq %1!;$exp!",
#else
    "\264\364\266\261",
    "j\302\253\261",
#endif
    seqsize(3, 1) - seqsize(1, 1)},
   {
#ifdef SCPACK
    "xchg!sless!jzer %1!;$exp!",
    "jsleq %1!;$exp!",
#else
    "\264\357\266\261",
    "j\303\253\261",
#endif
    seqsize(3, 1) - seqsize(1, 1)},
   {
#ifdef SCPACK
    "xchg!sgeq!jzer %1!;$exp!",
    "jsgrtr %1!;$exp!",
#else
    "\264\361\266\261",
    "j\337r\261",
#endif
    seqsize(3, 1) - seqsize(1, 1)},
   {
#ifdef SCPACK
    "xchg!sleq!jzer %1!;$exp!",
    "jsless %1!;$exp!",
#else
    "\264\362\266\261",
    "j\341\261",
#endif
    seqsize(3, 1) - seqsize(1, 1)},
   {
#ifdef SCPACK
    "xchg!sgrtr!;$exp!",
    "sless!;$exp!",
#else
    "\264\364\245",
    "\357\245",
#endif
    seqsize(2, 0) - seqsize(1, 0)},
   {
#ifdef SCPACK
    "xchg!sless!;$exp!",
    "sgrtr!;$exp!",
#else
    "\264\357\245",
    "\364\245",
#endif
    seqsize(2, 0) - seqsize(1, 0)},
   {
#ifdef SCPACK
    "xchg!sgeq!;$exp!",
    "sleq!;$exp!",
#else
    "\264\361\245",
    "\362\245",
#endif
    seqsize(2, 0) - seqsize(1, 0)},
   {
#ifdef SCPACK
    "xchg!sleq!;$exp!",
    "sgeq!;$exp!",
#else
    "\264\362\245",
    "\361\245",
#endif
    seqsize(2, 0) - seqsize(1, 0)},
   /* The entry to chained operators is also opt to optimization
    *    load.s.pri n1           load.s.pri n2
    *    load.s.alt n2           load.s.alt n1
    *    xchg                    -
    *    --------------------------------------
    *    load.s.pri n1           load.pri n2
    *    load.alt n2             load.s.alt n1
    *    xchg                    -
    *    --------------------------------------
    *    load.s.pri n1           const.pri n2
    *    const.alt n2            load.s.alt n1
    *    xchg                    -
    *    --------------------------------------
    * and all permutations...
    */
   {
#ifdef SCPACK
    "load.s.pri %1!load.s.alt %2!xchg!",
    "load.s.pri %2!load.s.alt %1!",
#else
    "\324\224\363",
    "\241\224\246",
#endif
    seqsize(3, 2) - seqsize(2, 2)},
   {
#ifdef SCPACK
    "load.s.pri %1!load.alt %2!xchg!",
    "load.pri %2!load.s.alt %1!",
#else
    "\324\213\363",
    "\317\224\246",
#endif
    seqsize(3, 2) - seqsize(2, 2)},
   {
#ifdef SCPACK
    "load.s.pri %1!const.alt %2!xchg!",
    "const.pri %2!load.s.alt %1!",
#else
    "\324\236\363",
    "\353\224\246",
#endif
    seqsize(3, 2) - seqsize(2, 2)},
   {
#ifdef SCPACK
    "load.pri %1!load.s.alt %2!xchg!",
    "load.s.pri %2!load.alt %1!",
#else
    "\314\224\363",
    "\241\213\246",
#endif
    seqsize(3, 2) - seqsize(2, 2)},
   {
#ifdef SCPACK
    "load.pri %1!load.alt %2!xchg!",
    "load.pri %2!load.alt %1!",
#else
    "\314\213\363",
    "\317\213\246",
#endif
    seqsize(3, 2) - seqsize(2, 2)},
   {
#ifdef SCPACK
    "load.pri %1!const.alt %2!xchg!",
    "const.pri %2!load.alt %1!",
#else
    "\314\236\363",
    "\353\213\246",
#endif
    seqsize(3, 2) - seqsize(2, 2)},
   {
#ifdef SCPACK
    "const.pri %1!load.s.alt %2!xchg!",
    "load.s.pri %2!const.alt %1!",
#else
    "\316\224\363",
    "\241\360",
#endif
    seqsize(3, 2) - seqsize(2, 2)},
   {
#ifdef SCPACK
    "const.pri %1!load.alt %2!xchg!",
    "load.pri %2!const.alt %1!",
#else
    "\316\213\363",
    "\317\360",
#endif
    seqsize(3, 2) - seqsize(2, 2)},
   /* Array indexing can merit from special instructions.
    * Simple indexed array lookup can be optimized quite
    * a bit.
    *    addr.pri n1             addr.alt n1
    *    push.pri                load.s.pri n2
    *    load.s.pri n2           bounds n3
    *    bounds n3               lidx.b n4
    *    shl.c.pri n4            -
    *    pop.alt                 -
    *    add                     -
    *    load.i                  -
    *
    * And to prepare for storing a value in an array
    *    addr.pri n1             addr.alt n1
    *    push.pri                load.s.pri n2
    *    load.s.pri n2           bounds n3
    *    bounds n3               idxaddr.b n4
    *    shl.c.pri n4            -
    *    pop.alt                 -
    *    add                     -
    *
    * Notes (additional cases):
    * 1. instruction addr.pri can also be const.pri (for
    *    global arrays)
    * 2. the bounds instruction can be absent
    * 3. when "n4" (the shift value) is the 2 (with 32-bit cels), use the
    *    even more optimal instructions LIDX and IDDXADDR
    *
    * If the array index is more complex, one can only optimize
    * the last four instructions:
    *    shl.c.pri n1            pop.alt
    *    pop.alt                 lidx.b n1
    *    add                     -
    *    loadi                   -
    *    --------------------------------------
    *    shl.c.pri n1            pop.alt
    *    pop.alt                 idxaddr.b n1
    *    add                     -
    */
#if !defined BIT16
   /* loading from array, "cell" shifted */
   {
#ifdef SCPACK
    "addr.pri %1!push.pri!load.s.pri %2!bounds %3!shl.c.pri 2!pop.alt!add!load.i!",
    "addr.alt %1!load.s.pri %2!bounds %3!lidx!",
#else
    "\333\300\342\366",
    "\252\334\335!",
#endif
    seqsize(8, 4) - seqsize(4, 3)},
   {
#ifdef SCPACK
    "const.pri %1!push.pri!load.s.pri %2!bounds %3!shl.c.pri 2!pop.alt!add!load.i!",
    "const.alt %1!load.s.pri %2!bounds %3!lidx!",
#else
    "\332\300\342\366",
    "\236\334\335!",
#endif
    seqsize(8, 4) - seqsize(4, 3)},
   {
#ifdef SCPACK
    "addr.pri %1!push.pri!load.s.pri %2!shl.c.pri 2!pop.alt!add!load.i!",
    "addr.alt %1!load.s.pri %2!lidx!",
#else
    "\333\342\366",
    "\252\307\335!",
#endif
    seqsize(7, 3) - seqsize(3, 2)},
   {
#ifdef SCPACK
    "const.pri %1!push.pri!load.s.pri %2!shl.c.pri 2!pop.alt!add!load.i!",
    "const.alt %1!load.s.pri %2!lidx!",
#else
    "\332\342\366",
    "\236\307\335!",
#endif
    seqsize(7, 3) - seqsize(3, 2)},
#endif
   /* loading from array, not "cell" shifted */
   {
#ifdef SCPACK
    "addr.pri %1!push.pri!load.s.pri %2!bounds %3!shl.c.pri %4!pop.alt!add!load.i!",
    "addr.alt %1!load.s.pri %2!bounds %3!lidx.b %4!",
#else
    "\333\300\310\370\366",
    "\252\334\335\345\370",
#endif
    seqsize(8, 4) - seqsize(4, 4)},
   {
#ifdef SCPACK
    "const.pri %1!push.pri!load.s.pri %2!bounds %3!shl.c.pri %4!pop.alt!add!load.i!",
    "const.alt %1!load.s.pri %2!bounds %3!lidx.b %4!",
#else
    "\332\300\310\370\366",
    "\236\334\335\345\370",
#endif
    seqsize(8, 4) - seqsize(4, 4)},
   {
#ifdef SCPACK
    "addr.pri %1!push.pri!load.s.pri %2!shl.c.pri %3!pop.alt!add!load.i!",
    "addr.alt %1!load.s.pri %2!lidx.b %3!",
#else
    "\333\310\257\366",
    "\252\307\335\345\257",
#endif
    seqsize(7, 3) - seqsize(3, 3)},
   {
#ifdef SCPACK
    "const.pri %1!push.pri!load.s.pri %2!shl.c.pri %3!pop.alt!add!load.i!",
    "const.alt %1!load.s.pri %2!lidx.b %3!",
#else
    "\332\310\257\366",
    "\236\307\335\345\257",
#endif
    seqsize(7, 3) - seqsize(3, 3)},
#if !defined BIT16
   /* array index calculation for storing a value, "cell" aligned */
   {
#ifdef SCPACK
    "addr.pri %1!push.pri!load.s.pri %2!bounds %3!shl.c.pri 2!pop.alt!add!",
    "addr.alt %1!load.s.pri %2!bounds %3!idxaddr!",
#else
    "\333\300\342\275",
    "\252\334\331!",
#endif
    seqsize(7, 4) - seqsize(4, 3)},
   {
#ifdef SCPACK
    "const.pri %1!push.pri!load.s.pri %2!bounds %3!shl.c.pri 2!pop.alt!add!",
    "const.alt %1!load.s.pri %2!bounds %3!idxaddr!",
#else
    "\332\300\342\275",
    "\236\334\331!",
#endif
    seqsize(7, 4) - seqsize(4, 3)},
   {
#ifdef SCPACK
    "addr.pri %1!push.pri!load.s.pri %2!shl.c.pri 2!pop.alt!add!",
    "addr.alt %1!load.s.pri %2!idxaddr!",
#else
    "\333\342\275",
    "\252\307\331!",
#endif
    seqsize(6, 3) - seqsize(3, 2)},
   {
#ifdef SCPACK
    "const.pri %1!push.pri!load.s.pri %2!shl.c.pri 2!pop.alt!add!",
    "const.alt %1!load.s.pri %2!idxaddr!",
#else
    "\332\342\275",
    "\236\307\331!",
#endif
    seqsize(6, 3) - seqsize(3, 2)},
#endif
   /* array index calculation for storing a value, not "cell" packed */
   {
#ifdef SCPACK
    "addr.pri %1!push.pri!load.s.pri %2!bounds %3!shl.c.pri %4!pop.alt!add!",
    "addr.alt %1!load.s.pri %2!bounds %3!idxaddr.b %4!",
#else
    "\333\300\310\370\275",
    "\252\334\331\345\370",
#endif
    seqsize(7, 4) - seqsize(4, 4)},
   {
#ifdef SCPACK
    "const.pri %1!push.pri!load.s.pri %2!bounds %3!shl.c.pri %4!pop.alt!add!",
    "const.alt %1!load.s.pri %2!bounds %3!idxaddr.b %4!",
#else
    "\332\300\310\370\275",
    "\236\334\331\345\370",
#endif
    seqsize(7, 4) - seqsize(4, 4)},
   {
#ifdef SCPACK
    "addr.pri %1!push.pri!load.s.pri %2!shl.c.pri %3!pop.alt!add!",
    "addr.alt %1!load.s.pri %2!idxaddr.b %3!",
#else
    "\333\310\257\275",
    "\252\307\331\345\257",
#endif
    seqsize(6, 3) - seqsize(3, 3)},
   {
#ifdef SCPACK
    "const.pri %1!push.pri!load.s.pri %2!shl.c.pri %3!pop.alt!add!",
    "const.alt %1!load.s.pri %2!idxaddr.b %3!",
#else
    "\332\310\257\275",
    "\236\307\331\345\257",
#endif
    seqsize(6, 3) - seqsize(3, 3)},
#if !defined BIT16
   /* the shorter array indexing sequences, see above for comments */
   {
#ifdef SCPACK
    "shl.c.pri 2!pop.alt!add!loadi!",
    "pop.alt!lidx!",
#else
    "\342\326\320",
    "\231\335!",
#endif
    seqsize(4, 1) - seqsize(2, 0)},
   {
#ifdef SCPACK
    "shl.c.pri 2!pop.alt!add!",
    "pop.alt!idxaddr!",
#else
    "\342\275",
    "\231\331!",
#endif
    seqsize(3, 1) - seqsize(2, 0)},
#endif
   {
#ifdef SCPACK
    "shl.c.pri %1!pop.alt!add!loadi!",
    "pop.alt!lidx.b %1!",
#else
    "\276\223\326\320",
    "\231\335\345\205",
#endif
    seqsize(4, 1) - seqsize(2, 1)},
   {
#ifdef SCPACK
    "shl.c.pri %1!pop.alt!add!",
    "pop.alt!idxaddr.b %1!",
#else
    "\276\223\275",
    "\231\331\345\205",
#endif
    seqsize(3, 1) - seqsize(2, 1)},
   /* For packed arrays, there is another case (packed arrays
    * do not take advantage of the LIDX or IDXADDR instructions).
    *    addr.pri n1             addr.alt n1
    *    push.pri                load.s.pri n2
    *    load.s.pri n2           bounds n3
    *    bounds n3               -
    *    pop.alt                 -
    *
    * Notes (additional cases):
    * 1. instruction addr.pri can also be const.pri (for
    *    global arrays)
    * 2. the bounds instruction can be absent, but that
    *    case is already handled (see #1#)
    */
   {
#ifdef SCPACK
    "addr.pri %1!push.pri!load.s.pri %2!bounds %3!pop.alt!",
    "addr.alt %1!load.s.pri %2!bounds %3!",
#else
    "\333\300\231",
    "\252\334",
#endif
    seqsize(5, 3) - seqsize(3, 3)},
   {
#ifdef SCPACK
    "const.pri %1!push.pri!load.s.pri %2!bounds %3!pop.alt!",
    "const.alt %1!load.s.pri %2!bounds %3!",
#else
    "\332\300\231",
    "\236\334",
#endif
    seqsize(5, 3) - seqsize(3, 3)},
   /* During a calculation, the intermediate result must sometimes
    * be moved from PRI to ALT, like in:
    *    push.pri                move.alt
    *    load.s.pri n1           load.s.pri n1
    *    pop.alt                 -
    *
    * The above also accurs for "load.pri" and for "const.pri",
    * so add another two cases.
    */
   {
#ifdef SCPACK
    "push.pri!load.s.pri %1!pop.alt!",
    "move.alt!load.s.pri %1!",
#else
    "\240\324\231",
    "\375\324",
#endif
    seqsize(3, 1) - seqsize(2, 1)},
   {
#ifdef SCPACK
    "push.pri!load.pri %1!pop.alt!",
    "move.alt!load.pri %1!",
#else
    "\240\314\231",
    "\375\314",
#endif
    seqsize(3, 1) - seqsize(2, 1)},
   {
#ifdef SCPACK
    "push.pri!const.pri %1!pop.alt!",
    "move.alt!const.pri %1!",
#else
    "\240\316\231",
    "\375\316",
#endif
    seqsize(3, 1) - seqsize(2, 1)},
   {
#ifdef SCPACK
    "push.pri!zero.pri!pop.alt!",
    "move.alt!zero.pri!",
#else
    "\240\376\231",
    "\375\376",
#endif
    seqsize(3, 0) - seqsize(2, 0)},
   /* saving PRI and then loading from its address
    * occurs when indexing a multi-dimensional array
    */
   {
#ifdef SCPACK
    "push.pri!load.i!pop.alt!",
    "move.alt!load.i!",
#else
    "\240\213\340\231",
    "\375\213\340",
#endif
    seqsize(3, 0) - seqsize(2, 0)},
   /* An even simpler PUSH/POP optimization (occurs in
    * switch statements):
    *    push.pri                move.alt
    *    pop.alt                 -
    */
   {
#ifdef SCPACK
    "push.pri!pop.alt!",
    "move.alt!",
#else
    "\240\231",
    "\375",
#endif
    seqsize(2, 0) - seqsize(1, 0)},
   /* And what to think of this PUSH/POP sequence, which occurs
    * due to the support for user-defined assignment operator):
    *    push.alt                -
    *    pop.alt                 -
    */
//???
//{
//  #ifdef SCPACK
//    "push.alt!pop.alt!",
//    ";$",     /* SCPACK cannot handle empty strings */
//  #else
//    "\225\237",
//    "\353",
//  #endif
//  seqsize(2,0) - seqsize(0,0)
//},
   /* Functions with many parameters with the same default
    * value have sequences like:
    *    push.c n1               const.pri n1
    *    ;$par                   push.r.pri n2   ; where n2 is the number of pushes
    *    push.c n1               ;$par
    *    ;$par                   -
    *    push.c n1               -
    *    ;$par                   -
    *    etc.                    etc.
    * The shortest matched sequence is 3, because a sequence of two can also be
    * optimized as two "push.c n1" instructions.
    * => this optimization does not work, because the argument re-ordering in
    *    a function call causes each argument to be optimized individually
    */
//{
//  #ifdef SCPACK
//    "const.pri %1!push.pri!;$par!const.pri %1!push.pri!;$par!const.pri %1!push.pri!;$par!const.pri %1!push.pri!;$par!const.pri %1!push.pri!;$par!",
//    "const.pri %1!push.r.pri 5!;$par!",
//  #else
//    "\327\327\254",
//    "\352\221.r\2745!",
//  #endif
//  seqsize(10,5) - seqsize(2,2)
//},
//{
//  #ifdef SCPACK
//    "const.pri %1!push.pri!;$par!const.pri %1!push.pri!;$par!const.pri %1!push.pri!;$par!const.pri %1!push.pri!;$par!",
//    "const.pri %1!push.r.pri 4!;$par!",
//  #else
//    "\327\327",
//    "\352\221.r\274\326",
//  #endif
//  seqsize(8,4) - seqsize(2,2)
//},
//{
//  #ifdef SCPACK
//    "const.pri %1!push.pri!;$par!const.pri %1!push.pri!;$par!const.pri %1!push.pri!;$par!",
//    "const.pri %1!push.r.pri 3!;$par!",
//  #else
//    "\327\254",
//    "\352\221.r\274\247",
//  #endif
//  seqsize(6,3) - seqsize(2,2)
//},
   /* User-defined operators first load the operands into registers and
    * then have them pushed onto the stack. This can give rise to sequences
    * like:
    *    const.pri n1            push.c n1
    *    const.alt n2            push.c n2
    *    push.pri                -
    *    push.alt                -
    * A similar sequence occurs with the two PUSH.pri/alt instructions inverted.
    * The first, second, or both CONST.pri/alt instructions can also be
    * LOAD.pri/alt.
    * This gives 2 x 4 cases.
    */
   {
#ifdef SCPACK
    "const.pri %1!const.alt %2!push.pri!push.alt!",
    "push.c %1!push.c %2!",
#else
    "\316\236\311\240\351",
    "\330\205\330\216",
#endif
    seqsize(4, 2) - seqsize(2, 2)},
   {
#ifdef SCPACK
    "const.pri %1!const.alt %2!push.alt!push.pri!",
    "push.c %2!push.c %1!",
#else
    "\316\236\311\351\240",
    "\330\216\330\205",
#endif
    seqsize(4, 2) - seqsize(2, 2)},
   {
#ifdef SCPACK
    "const.pri %1!load.alt %2!push.pri!push.alt!",
    "push.c %1!push %2!",
#else
    "\316\213\311\240\351",
    "\330\205\222\216",
#endif
    seqsize(4, 2) - seqsize(2, 2)},
   {
#ifdef SCPACK
    "const.pri %1!load.alt %2!push.alt!push.pri!",
    "push %2!push.c %1!",
#else
    "\316\213\311\351\240",
    "\222\216\330\205",
#endif
    seqsize(4, 2) - seqsize(2, 2)},
   {
#ifdef SCPACK
    "load.pri %1!const.alt %2!push.pri!push.alt!",
    "push %1!push.c %2!",
#else
    "\314\236\311\240\351",
    "\222\205\330\216",
#endif
    seqsize(4, 2) - seqsize(2, 2)},
   {
#ifdef SCPACK
    "load.pri %1!const.alt %2!push.alt!push.pri!",
    "push.c %2!push %1!",
#else
    "\314\236\311\351\240",
    "\330\216\222\205",
#endif
    seqsize(4, 2) - seqsize(2, 2)},
   {
#ifdef SCPACK
    "load.pri %1!load.alt %2!push.pri!push.alt!",
    "push %1!push %2!",
#else
    "\314\213\311\240\351",
    "\222\205\222\216",
#endif
    seqsize(4, 2) - seqsize(2, 2)},
   {
#ifdef SCPACK
    "load.pri %1!load.alt %2!push.alt!push.pri!",
    "push %2!push %1!",
#else
    "\314\213\311\351\240",
    "\222\216\222\205",
#endif
    seqsize(4, 2) - seqsize(2, 2)},
   /* Function calls (parameters are passed on the stack)
    *    load.s.pri n1           push.s n1
    *    push.pri                -
    *    --------------------------------------
    *    load.pri n1             push n1
    *    push.pri                -
    *    --------------------------------------
    *    const.pri n1            push.c n1
    *    push.pri                -
    *    --------------------------------------
    *    zero.pri                push.c 0
    *    push.pri                -
    *    --------------------------------------
    *    addr.pri n1             pushaddr n1
    *    push.pri                -
    *
    * However, PRI must not be needed after this instruction
    * if this shortcut is used. Check for the ;$par comment.
    */
   {
#ifdef SCPACK
    "load.s.pri %1!push.pri!;$par!",
    "push.s %1!;$par!",
#else
    "\224\255\344",
    "\222\220\205\344",
#endif
    seqsize(2, 1) - seqsize(1, 1)},
   {
#ifdef SCPACK
    "load.pri %1!push.pri!;$par!",
    "push %1!;$par!",
#else
    "\213\255\344",
    "\222\205\344",
#endif
    seqsize(2, 1) - seqsize(1, 1)},
   {
#ifdef SCPACK
    "const.pri %1!push.pri!;$par!",
    "push.c %1!;$par!",
#else
    "\236\255\344",
    "\330\205\344",
#endif
    seqsize(2, 1) - seqsize(1, 1)},
   {
#ifdef SCPACK
    "zero.pri!push.pri!;$par!",
    "push.c 0!;$par!",
#else
    "\376\240\344",
    "\330 0!\344",
#endif
    seqsize(2, 0) - seqsize(1, 1)},
   {
#ifdef SCPACK
    "addr.pri %1!push.pri!;$par!",
    "pushaddr %1!;$par!",
#else
    "\252\255\344",
    "\222\252\205\344",
#endif
    seqsize(2, 1) - seqsize(1, 1)},
   /* References with a default value generate new cells on the heap
    * dynamically. That code often ends with:
    *    move.pri                push.alt
    *    push.pri                -
    */
   {
#ifdef SCPACK
    "move.pri!push.pri!",
    "push.alt!",
#else
    "\350\232\240",
    "\351",
#endif
    seqsize(2, 0) - seqsize(1, 0)},
   /* Simple arithmetic operations on constants. Noteworthy is the
    * subtraction of a constant, since it is converted to the addition
    * of the inverse value.
    *    const.alt n1            add.c n1
    *    add                     -
    *    --------------------------------------
    *    const.alt n1            add.c -n1
    *    sub                     -
    *    --------------------------------------
    *    const.alt n1            smul.c n1
    *    smul                    -
    *    --------------------------------------
    *    const.alt n1            eq.c.pri n1
    *    eq                      -
    */
   {
#ifdef SCPACK
    "const.alt %1!add!",
    "add.c %1!",
#else
    "\360\270",
    "\233\247\205",
#endif
    seqsize(2, 1) - seqsize(1, 1)},
   {
#ifdef SCPACK
    "const.alt %1!sub!",
    "add.c -%1!",
#else
    "\360sub!",
    "\233\247 -%\204",
#endif
    seqsize(2, 1) - seqsize(1, 1)},
   {
#ifdef SCPACK
    "const.alt %1!smul!",
    "smul.c %1!",
#else
    "\360smul!",
    "smu\271\205",
#endif
    seqsize(2, 1) - seqsize(1, 1)},
   {
#ifdef SCPACK
    "const.alt %1!eq!",
    "eq.c.pri %1!",
#else
    "\360\265",
    "\253\247\223",
#endif
    seqsize(2, 1) - seqsize(1, 1)},
   /* Some operations use the alternative subtraction operation --these
    * can also be optimized.
    *    const.pri n1            load.s.pri n2
    *    load.s.alt n2           add.c -n1
    *    sub.alt                 -
    *    --------------------------------------
    *    const.pri n1            load.pri n2
    *    load.alt n2             add.c -n1
    *    sub.alt                 -
    */
   {
#ifdef SCPACK
    "const.pri %1!load.s.alt %2!sub.alt!",
    "load.s.pri %2!add.c -%1!",
#else
    "\316\224\311sub\217",
    "\241\233\247 -%\204",
#endif
    seqsize(3, 2) - seqsize(2, 2)},
   {
#ifdef SCPACK
    "const.pri %1!load.alt %2!sub.alt!",
    "load.pri %2!add.c -%1!",
#else
    "\316\213\311sub\217",
    "\317\233\247 -%\204",
#endif
    seqsize(3, 2) - seqsize(2, 2)},
   /* Compare and jump
    *    eq                      jneq n1
    *    jzer n1                 -
    *    --------------------------------------
    *    eq                      jeq n1
    *    jnz n1                  -
    *    --------------------------------------
    *    neq                     jeq n1
    *    jzer n1                 -
    *    --------------------------------------
    *    neq                     jneq n1
    *    jnz n1                  -
    * Compares followed by jzer occur much more
    * often than compares followed with jnz. So we
    * take the easy route here.
    *    less                    jgeq n1
    *    jzer n1                 -
    *    --------------------------------------
    *    leq                     jgrtr n1
    *    jzer n1                 -
    *    --------------------------------------
    *    grtr                    jleq n1
    *    jzer n1                 -
    *    --------------------------------------
    *    geq                     jless n1
    *    jzer n1                 -
    *    --------------------------------------
    *    sless                   jsgeq n1
    *    jzer n1                 -
    *    --------------------------------------
    *    sleq                    jsgrtr n1
    *    jzer n1                 -
    *    --------------------------------------
    *    sgrtr                   jsleq n1
    *    jzer n1                 -
    *    --------------------------------------
    *    sgeq                    jsless n1
    *    jzer n1                 -
    */
   {
#ifdef SCPACK
    "eq!jzer %1!",
    "jneq %1!",
#else
    "\265\305",
    "jn\325",
#endif
    seqsize(2, 1) - seqsize(1, 1)},
   {
#ifdef SCPACK
    "eq!jnz %1!",
    "jeq %1!",
#else
    "\265jnz\205",
    "j\325",
#endif
    seqsize(2, 1) - seqsize(1, 1)},
   {
#ifdef SCPACK
    "neq!jzer %1!",
    "jeq %1!",
#else
    "n\265\305",
    "j\325",
#endif
    seqsize(2, 1) - seqsize(1, 1)},
   {
#ifdef SCPACK
    "neq!jnz %1!",
    "jneq %1!",
#else
    "n\265jnz\205",
    "jn\325",
#endif
    seqsize(2, 1) - seqsize(1, 1)},
   {
#ifdef SCPACK
    "less!jzer %1!",
    "jgeq %1!",
#else
    "l\322!\305",
    "jg\325",
#endif
    seqsize(2, 1) - seqsize(1, 1)},
   {
#ifdef SCPACK
    "leq!jzer %1!",
    "jgrtr %1!",
#else
    "l\265\305",
    "jg\323r\205",
#endif
    seqsize(2, 1) - seqsize(1, 1)},
   {
#ifdef SCPACK
    "grtr!jzer %1!",
    "jleq %1!",
#else
    "g\323\306\305",
    "jl\325",
#endif
    seqsize(2, 1) - seqsize(1, 1)},
   {
#ifdef SCPACK
    "geq!jzer %1!",
    "jless %1!",
#else
    "g\265\305",
    "jl\322\205",
#endif
    seqsize(2, 1) - seqsize(1, 1)},
   {
#ifdef SCPACK
    "sless!jzer %1!",
    "jsgeq %1!",
#else
    "\357\305",
    "j\302\325",
#endif
    seqsize(2, 1) - seqsize(1, 1)},
   {
#ifdef SCPACK
    "sleq!jzer %1!",
    "jsgrtr %1!",
#else
    "\362\305",
    "j\337r\205",
#endif
    seqsize(2, 1) - seqsize(1, 1)},
   {
#ifdef SCPACK
    "sgrtr!jzer %1!",
    "jsleq %1!",
#else
    "\364\305",
    "j\303\325",
#endif
    seqsize(2, 1) - seqsize(1, 1)},
   {
#ifdef SCPACK
    "sgeq!jzer %1!",
    "jsless %1!",
#else
    "\361\305",
    "j\341\205",
#endif
    seqsize(2, 1) - seqsize(1, 1)},
   /* Test for zero (common case, especially for strings)
    * E.g. the test expression of: "for (i=0; str{i}!=0; ++i)"
    *
    *    zero.alt                jzer n1
    *    jeq n1                  -
    *    --------------------------------------
    *    zero.alt                jnz n1
    *    jneq n1                 -
    */
   {
#ifdef SCPACK
    "zero.alt!jeq %1!",
    "jzer %1!",
#else
    "\315\217j\325",
    "\305",
#endif
    seqsize(2, 1) - seqsize(1, 1)},
   {
#ifdef SCPACK
    "zero.alt!jneq %1!",
    "jnz %1!",
#else
    "\315\217jn\325",
    "jnz\205",
#endif
    seqsize(2, 1) - seqsize(1, 1)},
   /* Incrementing and decrementing leaves a value in
    * in PRI which may not be used (for example, as the
    * third expression in a "for" loop).
    *    inc n1                  inc n1  ; ++n
    *    load.pri n1             ;$exp
    *    ;$exp                   -
    *    --------------------------------------
    *    load.pri n1             inc n1  ; n++, e.g. "for (n=0; n<10; n++)"
    *    inc n1                  ;$exp
    *    ;$exp                   -
    * Plus the varieties for stack relative increments
    * and decrements.
    */
   {
#ifdef SCPACK
    "inc %1!load.pri %1!;$exp!",
    "inc %1!;$exp!",
#else
    "\373c\205\314\245",
    "\373c\261",
#endif
    seqsize(2, 2) - seqsize(1, 1)},
   {
#ifdef SCPACK
    "load.pri %1!inc %1!;$exp!",
    "inc %1!;$exp!",
#else
    "\314\373c\261",
    "\373c\261",
#endif
    seqsize(2, 2) - seqsize(1, 1)},
   {
#ifdef SCPACK
    "inc.s %1!load.s.pri %1!;$exp!",
    "inc.s %1!;$exp!",
#else
    "\373\352\205\324\245",
    "\373\352\261",
#endif
    seqsize(2, 2) - seqsize(1, 1)},
   {
#ifdef SCPACK
    "load.s.pri %1!inc.s %1!;$exp!",
    "inc.s %1!;$exp!",
#else
    "\324\373\352\261",
    "\373\352\261",
#endif
    seqsize(2, 2) - seqsize(1, 1)},
   {
#ifdef SCPACK
    "dec %1!load.pri %1!;$exp!",
    "dec %1!;$exp!",
#else
    "\367c\205\314\245",
    "\367c\261",
#endif
    seqsize(2, 2) - seqsize(1, 1)},
   {
#ifdef SCPACK
    "load.pri %1!dec %1!;$exp!",
    "dec %1!;$exp!",
#else
    "\314\367c\261",
    "\367c\261",
#endif
    seqsize(2, 2) - seqsize(1, 1)},
   {
#ifdef SCPACK
    "dec.s %1!load.s.pri %1!;$exp!",
    "dec.s %1!;$exp!",
#else
    "\367\352\205\324\245",
    "\367\352\261",
#endif
    seqsize(2, 2) - seqsize(1, 1)},
   {
#ifdef SCPACK
    "load.s.pri %1!dec.s %1!;$exp!",
    "dec.s %1!;$exp!",
#else
    "\324\367\352\261",
    "\367\352\261",
#endif
    seqsize(2, 2) - seqsize(1, 1)},
   /* ??? the same (increments and decrements) for references */
   /* Loading the constant zero has a special opcode.
    * When storing zero in memory, the value of PRI must not be later on.
    *    const.pri 0             zero n1
    *    stor.pri n1             ;$exp
    *    ;$exp                   -
    *    --------------------------------------
    *    const.pri 0             zero.s n1
    *    stor.s.pri n1           ;$exp
    *    ;$exp                   -
    *    --------------------------------------
    *    zero.pri                zero n1
    *    stor.pri n1             ;$exp
    *    ;$exp                   -
    *    --------------------------------------
    *    zero.pri                zero.s n1
    *    stor.s.pri n1           ;$exp
    *    ;$exp                   -
    *    --------------------------------------
    *    const.pri 0             zero.pri
    *    --------------------------------------
    *    const.alt 0             zero.alt
    * The last two alternatives save more memory than they save
    * time, but anyway...
    */
   {
#ifdef SCPACK
    "const.pri 0!stor.pri %1!;$exp!",
    "zero %1!;$exp!",
#else
    "\236\203 0!\227or\223\245",
    "\315\261",
#endif
    seqsize(2, 2) - seqsize(1, 1)},
   {
#ifdef SCPACK
    "const.pri 0!stor.s.pri %1!;$exp!",
    "zero.s %1!;$exp!",
#else
    "\236\203 0!\227or\220\223\245",
    "\315\220\261",
#endif
    seqsize(2, 2) - seqsize(1, 1)},
   {
#ifdef SCPACK
    "zero.pri!stor.pri %1!;$exp!",
    "zero %1!;$exp!",
#else
    "\376\227or\223\245",
    "\315\261",
#endif
    seqsize(2, 1) - seqsize(1, 1)},
   {
#ifdef SCPACK
    "zero.pri!stor.s.pri %1!;$exp!",
    "zero.s %1!;$exp!",
#else
    "\376\227or\220\223\245",
    "\315\220\261",
#endif
    seqsize(2, 1) - seqsize(1, 1)},
   {
#ifdef SCPACK
    "const.pri 0!",
    "zero.pri!",
#else
    "\236\203 0!",
    "\376",
#endif
    seqsize(1, 1) - seqsize(1, 0)},
   {
#ifdef SCPACK
    "const.alt 0!",
    "zero.alt!",
#else
    "\236\211 0!",
    "\315\217",
#endif
    seqsize(1, 1) - seqsize(1, 0)},
   /* ----- */
   {NULL, NULL, 0}
};