Hc08 code size - roybaer/sdcc-wiki GitHub Wiki
A history of code size in sdcc and a comparison to other compilers.
| File | ByteCraft C6808¹ hc08 | Cosmic C² hc08 | sdcc #7660 hc08 | sdcc #7670 hc08 | sdcc #8361 hc08 |
|---|---|---|---|---|---|
| cvu_vinb.c | fails | 6 | 7 | 7 | 6 |
| galois_lfsr.c | 16 | 11 | 31 | 23 | 19 |
| get_tile.c | fails | 103 | 138 | 130 | 123 |
| huffman_iterative.c | fails | 198 | 490 | 325 | 224 |
| huffman_recursive.c | fails | 222 | 713 | 433 | 261 |
| init_loop.c | 22 | 22 | 26 | 31 | 19 |
| insertion_sort.c | 73 | 83 | 162 | 180 | 152 |
| memcpy_compression.c | fails | 78 | 111 | 101 | 97 |
| memtovmemcpy.c | fails | 57 | 66 | 66 | 72 |
| play_music.c | fails | 546 | 1257 | 734 | 650 |
| sdcc_mullong.c | fails | 146 | 735 | 561 | 416 |
| set_screen_mode.c | fails | 40 | 67 | 59 | 50 |
| set_sprite_x.c | fails | 89 | 171 | 137 | 89 |
| z88dk-mktime.c | fails | 321 | 845 | 726 | 601 |
| total | fails | 1922 | 4819 | 3513 | 2779 |
| File | Code Warrior³ s08 | sdcc #7753 s08 | sdcc #8361 s08 |
|---|---|---|---|
| cvu_vinb.c | 6 | 6 | 6 |
| galois_lfsr.c | 17 | 23 | 19 |
| get_tile.c | 96 | 121 | 113 |
| huffman_iterative.c | 177 | 270 | 181 |
| huffman_recursive.c | 180 | 305 | 209 |
| init_loop.c | 17 | 31 | 19 |
| insertion_sort.c | 88 | 164 | 134 |
| memcpy_compression.c | 71 | 90 | 76 |
| memtovmemcpy.c | 57 | 52 | 57 |
| play_music.c | 466 | 622 | 570 |
| sdcc_mullong.c | 148 | 471 | 386 |
| set_screen_mode.c | 50 | 64 | 50 |
| set_sprite_x.c | 59 | 100 | 92 |
| z88dk-mktime.c | 308 | 641 | 542 |
| total | 1740 | 2960 | 2454 |
http://sdcc.sourceforge.net/wiki_images/graph-hc08.png
The benchmark files can be found at http://colecovision.eu/stuff/testbench.tar.gz
¹ C6808 "C" COMPILER 3.0.0.17 - Current evaluation version as of 2012-5-12
² C Compiler for M68HC08 (COSMIC Software); Generator V4.6.3 - 05 Aug 2008; Optimizer V4.5.9 - 05 Aug 2008 - Current evaluation version as of 2012-5-12
³ ANSI-C/cC++ Compiler for HC08 V-5.0.39 Build 11346, Dec 13 2011 - Current evaluation version as of 2012-5-12
This is a list of feature requests, that combined will probably get code size down near to the level of the non-free compilers.
| Request ID | Summary |
|---|---|
| 3526527 | Pointer analysis |
| 3526526 | Generalized constant propagation |
| 3526292 | Direct assignment / clear |
| 3526285 | Non-destructive and for ifx (hc08) |
| 3526278 | Multibyte constant assignment |
| 3526274 | Tail call optimization |
| 3526270 | Eliminate untargeted labels |
| 3526269 | Right operand for setting value at address |
| 3526268 | Right operand for GET_VALUE_AT_ADDRESS |
| 3525464 | lospre |
| 3528282 | notUsed() |