/* 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 14177 2005-04-13 19:37:01Z tsauerbeck $
*/
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}
};