5 // ; Peephole 1 removed pop %1 push %1 (not push pop)
13 // ; Peephole 2 removed pop %1 push %1 (not push pop)
18 // added by Jean Louis VERN for
24 ; Peephole 2.a removed redundant xch xch
32 ; Peephole 3.a changed mov to clr
42 ; Peephole 3.b changed mov to clr
48 // saving 1 byte, loosing 1 cycle but maybe allowing peephole 3.b to start
53 ; Peephole 3.c changed mov to clr
66 ; Peephole 100 removed redundant mov
75 ; Peephole 100.a removed redundant mov
85 ; Peephole 101 removed redundant mov
103 ; Peephole 102 removed redundant mov
125 ; Peephole 103 removed redundant mov
142 ; Peephole 104 optimized increment (acc not set to r%1, flags undefined)
151 ; Peephole 105 removed redundant mov
160 ; Peephole 106 removed redundant mov
169 ; Peephole 107 removed redundant ljmp
178 ; Peephole 108 removed ljmp by inverse jump logic
188 ; Peephole 109 removed ljmp by inverse jump logic
198 ; Peephole 110 removed ljmp by inverse jump logic
208 ; Peephole 111 removed ljmp by inverse jump logic
218 ; Peephole 112 removed ljmp by inverse jump logic
227 ; Peephole 244 replaced ljmp to ret with ret
229 } if labelIsReturnOnly
236 ; Peephole 132 changed ljmp to sjmp
250 ; Peephole 113 optimized misc sequence
255 } if labelRefCount %3 1
266 ; Peephole 114 optimized misc sequence
272 } if labelRefCount %3 2
281 ; Peephole 115 jump optimization
285 } if labelRefCount %3 1
295 ; Peephole 116 jump optimization
300 } if labelRefCount %3 2
311 ; Peephole 117 jump optimization
317 } if labelRefCount %3 3
329 ; Peephole 118 jump optimization
336 } if labelRefCount %3 4
345 ; Peephole 119 jump optimization
348 } if labelRefCount %3 1
358 ; Peephole 120 jump optimization
362 } if labelRefCount %3 2
373 ; Peephole 121 jump optimization
378 } if labelRefCount %3 3
390 ; Peephole 122 jump optimization
396 } if labelRefCount %3 4
405 ; Peephole 123 jump optimization
409 } if labelRefCount %3 1
419 ; Peephole 124 jump optimization
424 } if labelRefCount %3 2
435 ; Peephole 125 jump optimization
441 } if labelRefCount %3 3
453 ; Peephole 126 jump optimization
460 } if labelRefCount %3 4
473 ; Peephole 127 removed misc sequence
475 } if labelRefCount %3 0
482 ; Peephole 128 jump optimization
491 ; Peephole 129 jump optimization
498 ; Peephole 130 changed target address mode r%1 to ar%1
508 ; Peephole 131 optimized decrement (not caring for c)
520 ; Peephole 133 removed redundant moves
533 ; Peephole 134 removed redundant moves
544 ; Peephole 135 removed redundant mov
555 ; Peephole 136 removed redundant moves
561 // WTF? Doesn't look sensible to me...
571 // ; Peephole 137 optimized misc jump sequence
575 //} if labelRefCount %4 1
586 // ; Peephole 138 optimized misc jump sequence
591 //} if labelRefCount %4 1
598 ; Peephole 139 removed redundant mov
608 ; Peephole 140 removed redundant mov
617 ; Peephole 141 removed redundant mov
627 ; Peephole 142 removed redundant moves
636 ; Peephole 143 converted rlc to rl
644 ; Peephole 144 converted rrc to rc
652 ; Peephole 145 changed to add without carry
661 ; Peephole 146 changed to add without carry
669 ; Peephole 147 changed target address mode r%1 to ar%1
676 ; Peephole 148 changed target address mode r%1 to ar%1
683 ; Peephole 149 changed target address mode r%1 to ar%1
693 ; Peephole 150 removed misc moves via dpl before return
706 ; Peephole 151 removed misc moves via dph, dpl before return
718 ; Peephole 152 removed misc moves via dph, dpl before return
733 ; Peephole 153 removed misc moves via dph, dpl, b before return
746 ; Peephole 154 removed misc moves via dph, dpl, b before return
760 ; Peephole 155 removed misc moves via dph, dpl, b before return
777 ; Peephole 156 removed misc moves via dph, dpl, b, a before return
792 ; Peephole 157 removed misc moves via dph, dpl, b, a before return
806 ; Peephole 158 removed misc moves via dph, dpl, b, a before return
815 ; Peephole 159 avoided xrl during execution
824 ; Peephole 160 removed sjmp by inverse jump logic
834 ; Peephole 161 removed sjmp by inverse jump logic
844 ; Peephole 162 removed sjmp by inverse jump logic
854 ; Peephole 163 removed sjmp by inverse jump logic
864 ; Peephole 164 removed sjmp by inverse jump logic
874 ; Peephole 165 removed sjmp by inverse jump logic
884 ; Peephole 166 removed redundant mov
887 } if notVolatile %1 %2
894 ; Peephole 167 removed redundant bit moves (c not set to %1)
903 ; Peephole 168 jump optimization
913 ; Peephole 169 jump optimization
925 ; Peephole 170 jump optimization
928 } if labelRefCount %3 1
938 ; Peephole 171 jump optimization
942 } if labelRefCount %3 2
953 ; Peephole 172 jump optimization
958 } if labelRefCount %3 3
970 ; Peephole 173 jump optimization
976 } if labelRefCount %3 4
985 ; Peephole 174 optimized decrement (acc not set to %2, flags undefined)
996 ; Peephole 175 optimized increment (acc not set to %2, flags undefined)
1006 ; Peephole 176 optimized increment, removed redundant mov
1011 // this one will screw assignes to volatile/sfr's
1016 ; Peephole 177 removed redundant mov
1018 } if notVolatile %1 %2
1020 // applies to f.e. scott-add.asm (--model-large)
1025 ; Peephole 177 removed redundant mov
1034 ; Peephole 178 removed redundant mov
1039 // rules 179-182 provided by : Frieder <fe@lake.iup.uni-heidelberg.de>
1040 // saving 2 byte, 1 cycle
1045 ; Peephole 179 changed mov to clr
1051 // volatile xdata char t; t=0x01; t=0x03;
1058 ; Peephole 180.a removed redundant mov to dptr
1064 // volatile xdata char t; t=0x01; t=0x03; t=0x01;
1073 ; Peephole 180.b removed redundant mov to dptr
1081 // saving 1 byte, 0 cycles
1085 ; Peephole 181 changed mov to clr
1089 // saving 3 bytes, 2 cycles
1090 // provided by Bernhard Held <bernhard.held@de.westinghouse.com>
1095 ; Peephole 182.a used 16 bit load of DPTR
1099 // saving 3 byte, 2 cycles, return(NULL) profits here
1104 ; Peephole 182.b used 16 bit load of dptr
1108 // saving 3 byte, 2 cycles. Probably obsoleted by 182.b
1113 ; Peephole 182.c used 16 bit load of dptr
1114 mov dptr,#(((%2)<<8) + %1)
1121 ; Peephole 183 avoided anl during execution
1130 ; Peephole 184 removed redundant mov
1136 // acc being incremented might cause problems
1140 ; Peephole 185 changed order of increment (acc incremented also!)
1165 ; Peephole 186.a optimized movc sequence
1197 ; Peephole 186.b optimized movc sequence
1222 ; Peephole 186.c optimized movc sequence
1240 ; Peephole 186.d optimized movc sequence
1250 ; Peephole 187 used a instead of ar%1 for anl
1262 ; Peephole 188 removed redundant mov
1274 ; Peephole 189 removed redundant mov and anl
1279 // rules 190 & 191 need to be in order
1285 ; Peephole 190 removed redundant mov
1297 ; Peephole 191 removed redundant mov
1308 ; Peephole 192 used a instead of ar%1 as source
1325 ; Peephole 193.a optimized misc jump sequence
1335 } if labelRefCount %3 4
1349 ; Peephole 193.b optimized misc jump sequence
1359 } if labelRefCount %3 4
1373 ; Peephole 193.c optimized misc jump sequence
1383 } if labelRefCount %3 4
1394 ; Peephole 194 optimized misc jump sequence
1401 } if labelRefCount %3 4
1413 ; Peephole 195.a optimized misc jump sequence
1421 } if labelRefCount %3 3
1433 ; Peephole 195.b optimized misc jump sequence
1441 } if labelRefCount %3 3
1453 ; Peephole 195.c optimized misc jump sequence
1461 } if labelRefCount %3 3
1471 ; Peephole 196 optimized misc jump sequence
1477 } if labelRefCount %3 3
1487 ; Peephole 197.a optimized misc jump sequence
1493 } if labelRefCount %3 2
1503 ; Peephole 197.b optimized misc jump sequence
1509 } if labelRefCount %3 2
1519 ; Peephole 197.c optimized misc jump sequence
1525 } if labelRefCount %3 2
1534 ; Peephole 198 optimized misc jump sequence
1539 } if labelRefCount %3 2
1547 ; Peephole 199 optimized misc jump sequence
1551 } if labelRefCount %3 1
1557 ; Peephole 200 removed redundant sjmp
1566 ; Peephole 201 removed redundant sjmp
1576 ; Peephole 202 removed redundant push pop
1585 ; Peephole 203 removed mov r%1,_spx
1594 ; Peephole 204 removed redundant mov
1606 ; Peephole 205 optimized misc jump sequence
1610 } if labelRefCount %2 1
1615 ; Peephole 206 removed redundant mov %1,%1
1623 ; Peephole 207 removed zero add (acc not set to %1, flags undefined)
1632 ; Peephole 208 removed redundant push pop
1642 ; Peephole 209 optimized increment (acc not set to %1, flags undefined)
1648 mov dptr,#((((%1 >> 8)) <<8) + %1)
1650 ; Peephole 210 simplified expression
1658 ; Peephole 211 removed redundant push %1 pop %1
1666 ; Peephole 212 reduced add sequence to inc
1672 mov %1,#(( %2 >> 8 ) ^ 0x80)
1674 ; Peephole 213.a inserted fix
1680 mov %1,#(( %2 + %3 >> 8 ) ^ 0x80)
1682 ; Peephole 213.b inserted fix
1683 mov %1,#((%2 + %3) >> 8)
1693 ; Peephole 214 reduced some extra moves
1696 } if operandsNotSame
1703 ; Peephole 215 removed some moves
1706 } if operandsNotSame
1716 ; Peephole 216 simplified clear (2bytes)
1735 ; Peephole 217 simplified clear (3bytes)
1759 ; Peephole 218 simplified clear (4bytes)
1778 ; Peephole 219 removed redundant clear
1794 ; Peephole 219.a removed redundant clear
1807 ; Peephole 220.a removed bogus DPS set
1815 ; Peephole 220.b removed bogus DPS set
1820 mov %1 + %2,(%2 + %1)
1822 ; Peephole 221.a remove redundant move
1826 mov (%1 + %2 + %3),((%2 + %1) + %3)
1828 ; Peephole 221.b remove redundant move
1835 ; Peephole 222 removed dec/inc pair
1844 ; Peephole 223 removed redundant dph/dpl moves
1847 } if notVolatile %1 %2
1855 ; Peephole 224 removed redundant dph/dpl moves
1868 ; Peephole 225 removed redundant move to acc
1884 ; Peephole 226 removed unnecessary clr
1906 ; Peephole 227 replaced inefficient 32 bit clear
1934 ; Peephole 228 replaced inefficient 32 constant
1956 ; Peephole 229 replaced inefficient 16 bit clear
1974 ; Peephole 230 replaced inefficient 16 bit constant
1984 // this last peephole often removes the last mov from 227-230
1989 ; Peephole 231 removed redundant mov to dptr
1996 ; Peephole 232 using movc to read xdata (--xram-movc)
2004 ; Peephole 233 using _gptrgetc instead of _gptrget (--xram-movc)
2014 ; Peephole 234 loading dpl directly from a(ccumulator), r%1 not set
2027 ; Peephole 235 loading dph directly from a(ccumulator), r%1 not set
2034 // 14 rules by Fiorenzo D. Ramaglia <fd.ramaglia@tin.it>
2039 ; Peephole 236.a used r%1 instead of ar%1
2046 ; Peephole 236.b used r%1 instead of ar%1
2053 ; Peephole 236.c used r%1 instead of ar%1
2060 ; Peephole 236.d used r%1 instead of ar%1
2067 ; Peephole 236.e used r%1 instead of ar%1
2074 ; Peephole 236.f used r%1 instead of ar%1
2081 ; Peephole 236.g used r%1 instead of ar%1
2088 ; Peephole 236.h used r%1 instead of ar%1
2095 ; Peephole 236.i used r%1 instead of ar%1
2102 ; Peephole 236.j used r%1 instead of ar%1
2109 ; Peephole 236.k used r%1 instead of ar%1
2116 ; Peephole 236.l used r%1 instead of ar%1
2123 ; Peephole 236.m used r%1 instead of ar%1
2130 ; Peephole 236.n used r%1 instead of ar%1
2141 ; Peephole 237.a removed sjmp to ret
2158 ; Peephole 237.b removed sjmp to ret
2168 // applies to f.e. device/lib/log10f.c
2194 ; Peephole 238.a removed 4 redundant moves
2195 } if operandsNotSame8 %1 %2 %3 %4 %5 %6 %7 %8
2197 // applies to device/lib/log10f.c
2212 ; Peephole 238.b removed 3 redundant moves
2213 } if operandsNotSame7 %1 %2 %3 %4 %5 %6 %7
2215 // applies to f.e. device/lib/time.c
2231 ; Peephole 238.c removed 2 redundant moves
2232 } if operandsNotSame4 %1 %2 %3 %4
2234 // applies to f.e. support/regression/tests/bug-524209.c
2247 ; Peephole 238.d removed 3 redundant moves
2248 } if operandsNotSame6 %1 %2 %3 %4 %5 %6
2250 // applies to f.e. ser_ir.asm
2254 ; Peephole 239 used a instead of acc
2262 ; Peephole 240 use clr instead of addc a,#0
2267 // peepholes 241.a to 241.c and 241.d to 241.f need to be in order
2279 ; Peephole 241.a optimized compare
2290 // applies to f.e. time.c
2300 ; Peephole 241.b optimized compare
2309 // applies to f.e. malloc.c
2318 ; Peephole 241.c optimized compare
2326 // applies to f.e. j = (k!=0x1000);
2327 // with volatile idata long k;
2342 ; Peephole 241.d optimized compare
2356 // applies to f.e. j = (k!=0x1000);
2357 // with volatile idata int k;
2368 ; Peephole 241.e optimized compare
2378 // applies to f.e. vprintf.asm (--stack-auto)
2387 ; Peephole 241.f optimized compare
2395 // applies to f.e. scott-bool1.c
2402 ; Peephole 242.a avoided branch jnz to jz
2407 } if labelRefCount %1 1
2409 // applies to f.e. scott-bool1.c
2417 ; Peephole 242.b avoided branch jnz to jz
2423 } if labelRefCount %1 1
2425 // applies to f.e. logic.c
2435 ; Peephole 242.c avoided branch jnz to jz
2443 } if labelRefCount %1 1
2445 // applies to f.e. vprintf.c
2446 // this is a rare case, usually the "tail increment" is noticed earlier
2453 ; Peephole 243 avoided branch to sjmp
2460 // applies to f.e. simplefloat.c (saving 1 cycle)
2465 ; Peephole 244.a moving first to a instead of r%1
2470 // applies to f.e. _itoa.c (saving 1 cycle)
2475 ; Peephole 244.b moving first to a instead of r%1
2481 // applies to f.e. bug-460010.c (saving 1 cycle)
2486 ; Peephole 244.c loading dpl from a instead of r%1
2495 ; Peephole 244.d loading dph from a instead of r%1
2500 // this one is safe but disables 245.a 245.b
2501 // please remove 245 if 245.a 245.b are found to be safe
2502 // applies to f.e. scott-compare.c
2513 ; Peephole 245 optimized complement (r%1 and acc set needed?)
2518 } if labelRefCount %2 1
2520 // this one will not be triggered if 245 is present
2521 // please remove 245 if 245.a 245.b are found to be safe
2522 // applies to f.e. vprintf.c
2534 ; Peephole 245.a optimized conditional jump (r%1 and acc not set!)
2536 } if labelRefCount %2 1
2538 // this one will not be triggered if 245 is present
2539 // please remove 245 if 245.a 245.b are found to be safe
2540 // applies to f.e. scott-compare.c
2552 ; Peephole 245.b optimized conditional jump (r%1 and acc not set!)
2554 } if labelRefCount %2 1
2557 // rules 246.x apply to f.e. bitfields.c
2568 ; Peephole 246.a combined clr/clr
2585 ; Peephole 246.b combined set/set
2602 ; Peephole 246.c combined set/clr
2620 ; Peephole 246.d combined clr/set
2639 ; Peephole 246.e combined set/clr/clr
2658 ; Peephole 246.f combined set/clr/set
2678 ; Peephole 246.g combined clr/set/clr
2698 ; Peephole 246.h combined clr/set/set
2709 // rules 247.x apply to f.e. bitfields.c
2720 ; Peephole 247.a combined clr/clr
2737 ; Peephole 247.b combined set/set
2754 ; Peephole 247.c combined set/clr
2772 ; Peephole 247.d combined clr/set
2791 ; Peephole 247.e combined set/clr/clr
2810 ; Peephole 247.f combined set/clr/set
2830 ; Peephole 247.g combined clr/set/clr
2850 ; Peephole 247.h combined clr/set/set
2859 // Peepholes 248.x have to be compatible with the keyword volatile.
2860 // They optimize typical accesses to memory mapped I/O devices:
2861 // volatile xdata char t; t|=0x01;
2871 ; Peephole 248.a optimized or to xdata
2879 // volatile xdata char t; t&=0x01;
2889 ; Peephole 248.b optimized and to xdata
2897 // volatile xdata char t; t^=0x01;
2907 ; Peephole 248.c optimized xor to xdata
2915 // volatile xdata char t; t|=0x01; t&=~0x01; t|=0x01;
2935 ; Peephole 248.d optimized or/and/or to volatile xdata
2949 // volatile xdata char t; t&=~0x01; t|=0x01; t&=~0x01;
2969 ; Peephole 248.e optimized and/or/and to volatile xdata
2983 // volatile xdata char t; t|=0x01; t&=~0x01;
2997 ; Peephole 248.f optimized or/and to volatile xdata
3008 // volatile xdata char t; t&=~0x01; t|=0x01;
3022 ; Peephole 248.g optimized and/or to volatile xdata
3033 // volatile xdata char t; t^=0x01; t^=0x01;
3047 ; Peephole 248.h optimized xor/xor to volatile xdata