Age | Commit message (Collapse) | Author |
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function old new delta
zbc_program_assign 448 447 -1
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function optimizations
With direct calls, GCC no longer thinks that we take addresses of the functions,
and can use "more optimal" internal ABI for _all_ calls to these functions,
not only at this callsite. On i486, regparm is used, and:
function old new delta
zbc_num_inv 56 57 +1
zbc_num_k 852 851 -1
zbc_program_modexp 558 556 -2
zbc_num_d 541 539 -2
bc_num_ulong2num 59 57 -2
zbc_program_num 840 836 -4
bc_num_zero 11 7 -4
bc_num_one 28 24 -4
bc_program_exec 3928 3918 -10
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/8 up/down: 1/-29) Total: -28 bytes
text data bss dec hex filename
982237 485 7296 990018 f1b42 busybox_old
982209 485 7296 989990 f1b26 busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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In order for magic macros to work, a bit of reordering was necessary.
function old new delta
zbc_program_modexp - 558 +558
zbc_program_assign - 448 +448
zbc_program_pushArray - 111 +111
zbc_num_s 239 237 -2
zbc_num_d 543 541 -2
zbc_num_binary 145 143 -2
zbc_num_a 443 441 -2
zbc_num_rem 95 91 -4
zbc_num_divmod 150 146 -4
zbc_num_m 269 257 -12
zbc_num_r 230 208 -22
zbc_num_printNum 447 417 -30
bc_program_exec 3960 3928 -32
zbc_num_p 434 399 -35
zbc_program_num 880 840 -40
zbc_num_k 913 852 -61
zbc_program_printStream 141 - -141
bc_program_assign 455 - -455
bc_program_modexp 668 - -668
------------------------------------------------------------------------------
(add/remove: 3/3 grow/shrink: 0/13 up/down: 1117/-1512) Total: -395 bytes
text data bss dec hex filename
982632 485 7296 990413 f1ccd busybox_old
982237 485 7296 990018 f1b42 busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
zbc_lex_number 279 190 -89
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
bc_program_pushVar 200 198 -2
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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is not generated
Most affected functions shrink by 2 bytes on x86.
function old new delta
zbc_program_num - 880 +880
zbc_program_print - 665 +665
zbc_num_printNum - 447 +447
zbc_program_call - 323 +323
zbc_program_copyToVar - 287 +287
zbc_lex_number - 279 +279
zbc_program_binOpPrep - 269 +269
zbc_program_assignStr - 142 +142
zbc_program_printStream - 141 +141
zbc_func_insert - 93 +93
zbc_num_ulong - 88 +88
zbc_program_prep - 79 +79
zbc_num_shift - 53 +53
bc_num_shift 54 - -54
bc_program_prep 81 - -81
bc_num_ulong 90 - -90
bc_func_insert 95 - -95
bc_program_printStream 143 - -143
bc_program_assignStr 144 - -144
bc_program_binOpPrep 271 - -271
bc_lex_number 281 - -281
bc_program_copyToVar 289 - -289
bc_program_call 325 - -325
bc_num_printNum 471 - -471
bc_program_print 667 - -667
bc_program_num 880 - -880
------------------------------------------------------------------------------
(add/remove: 13/13 grow/shrink: 0/0 up/down: 3746/-3791) Total: -45 bytes
text data bss dec hex filename
982779 485 7296 990560 f1d60 busybox_old
982734 485 7296 990515 f1d33 busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
bc_program_exec 3920 3969 +49
bc_program_call 329 325 -4
bc_vm_run 622 616 -6
bc_program_modexp 677 668 -9
bc_program_assign 471 455 -16
bc_program_pushArray 113 - -113
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 1/4 up/down: 49/-148) Total: -99 bytes
text data bss dec hex filename
982872 485 7296 990653 f1dbd busybox_old
982773 485 7296 990554 f1d5a busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Gigabyte-long names are not a practical concern.
function old new delta
bc_lex_name 73 69 -4
bc_lex_token 1266 1259 -7
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-11) Total: -11 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
bc_program_assign 475 471 -4
bc_program_prep 87 81 -6
bc_parse_parse 423 417 -6
bc_num_p 440 434 -6
bc_program_printStream 153 143 -10
bc_program_execStr 478 468 -10
bc_parse_auto 275 265 -10
bc_num_k 925 913 -12
bc_program_copyToVar 307 289 -18
bc_program_binOpPrep 289 271 -18
bc_num_printNum 489 471 -18
bc_num_m 287 269 -18
bc_program_pushArray 139 113 -26
bc_program_modexp 707 677 -30
bc_program_print 704 667 -37
bc_program_exec 4010 3920 -90
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/16 up/down: 0/-319) Total: -319 bytes
text data bss dec hex filename
983202 485 7296 990983 f1f07 busybox_old
982883 485 7296 990664 f1dc8 busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
bc_num_s 235 239 +4
bc_lex_next 92 91 -1
dc_parse_register 53 51 -2
dc_parse_parse 46 44 -2
bc_vm_run 624 622 -2
bc_program_assignStr 146 144 -2
bc_parse_else 135 133 -2
bc_parse_body 116 114 -2
bc_num_a 445 443 -2
bc_func_insert 97 95 -2
bc_program_pushVar 203 200 -3
bc_parse_text 133 130 -3
bc_error_bad_character 17 14 -3
bc_error 14 11 -3
bc_program_printStream 157 153 -4
bc_program_prep 91 87 -4
bc_program_copyToVar 311 307 -4
bc_num_ulong 95 90 -5
bc_num_p 445 440 -5
bc_program_print 711 704 -7
bc_parse_endBody 365 358 -7
bc_num_r 237 230 -7
bc_num_d 550 543 -7
dc_lex_token 682 674 -8
bc_program_pushArray 147 139 -8
bc_program_assign 485 475 -10
bc_program_read 333 322 -11
bc_lex_token 1278 1266 -12
bc_parse_stmt 1780 1767 -13
bc_program_modexp 723 707 -16
dc_parse_expr 762 744 -18
bc_program_execStr 496 478 -18
bc_program_call 347 329 -18
bc_vm_file 219 197 -22
bc_program_binOpPrep 311 289 -22
bc_parse_name 539 513 -26
bc_parse_parse 451 423 -28
bc_program_num 912 880 -32
bc_read_line 172 139 -33
bc_program_exec 4048 4010 -38
bc_parse_auto 313 275 -38
bc_parse_expr_empty_ok 2095 2036 -59
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/41 up/down: 4/-509) Total: -505 bytes
text data bss dec hex filename
983707 485 7296 991488 f2100 busybox_old
983202 485 7296 990983 f1f07 busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
bc_program_num 925 912 -13
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
bc_num_rem 91 95 +4
bc_num_inv 53 56 +3
bc_num_d 569 572 +3
bc_num_printDigits 136 137 +1
bc_program_assign 486 485 -1
dc_lex_token 684 682 -2
bc_vec_pop 27 25 -2
bc_vec_npop 55 53 -2
bc_program_read 335 333 -2
bc_program_print 713 711 -2
bc_parse_parse 462 460 -2
bc_lex_token 1280 1278 -2
bc_num_printChar 27 24 -3
bc_num_binary 150 147 -3
dc_parse_parse 59 55 -4
bc_vm_run 630 626 -4
bc_num_printHex 71 67 -4
bc_num_divmod 155 150 -5
bc_vec_free 24 18 -6
bc_string_free 15 9 -6
bc_num_free 15 9 -6
bc_id_free 15 9 -6
bc_parse_free 53 46 -7
bc_program_scale 8 - -8
bc_num_r 245 237 -8
bc_func_free 35 27 -8
bc_result_free 57 46 -11
bc_num_a 454 443 -11
bc_num_sub 77 65 -12
bc_num_add 77 65 -12
bc_program_modexp 736 723 -13
bc_num_s 252 239 -13
bc_num_mul 62 49 -13
bc_num_mod 62 49 -13
bc_num_div 62 49 -13
bc_num_pow 47 31 -16
bc_program_exec 4081 4059 -22
bc_num_printNum 514 489 -25
bc_num_p 478 445 -33
bc_program_len 34 - -34
bc_program_num 963 925 -38
bc_num_k 988 944 -44
------------------------------------------------------------------------------
(add/remove: 0/2 grow/shrink: 4/36 up/down: 11/-416) Total: -405 bytes
text data bss dec hex filename
984536 485 7296 992317 f243d busybox_old
984131 485 7296 991912 f22a8 busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
bc_vec_concat 71 66 -5
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
bc_program_len 42 34 -8
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
bc_program_print 730 713 -17
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
bc_num_ulong2num 64 59 -5
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
bc_program_index 66 64 -2
bc_program_num 983 963 -20
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-22) Total: -22 bytes
text data bss dec hex filename
985706 477 7296 993479 f28c7 busybox_old
985684 477 7296 993457 f28b1 busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
bc_program_num 1108 983 -125
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-125) Total: -125 bytes
text data bss dec hex filename
985831 477 7296 993604 f2944 busybox_old
985706 477 7296 993479 f28c7 busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
bc_num_init 48 49 +1
bc_program_num 1115 1108 -7
bc_program_exec 4098 4081 -17
bc_vm_init 786 768 -18
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/3 up/down: 1/-42) Total: -41 bytes
text data bss dec hex filename
985872 477 7296 993645 f296d busybox_old
985831 477 7296 993604 f2944 busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
bc_num_init_DEF_SIZE - 10 +10
bc_num_binary 150 148 -2
bc_program_pushVar 208 203 -5
bc_program_modexp 741 736 -5
bc_program_copyToVar 316 311 -5
bc_program_call 352 347 -5
bc_array_expand 88 83 -5
bc_program_num 1125 1115 -10
bc_vm_init 821 786 -35
bc_program_exec 4152 4098 -54
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/9 up/down: 10/-126) Total: -116 bytes
text data bss dec hex filename
985988 477 7296 993761 f29e1 busybox_old
985872 477 7296 993645 f296d busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
bc_program_execStr 502 496 -6
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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While at it, delete empty lines.
function old new delta
bc_program_exec 4179 4152 -27
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
bc_program_str - 17 +17
bc_program_func - 17 +17
bc_program_addFunc 209 204 -5
bc_program_reset 70 64 -6
bc_program_printStream 163 157 -6
bc_program_print 736 730 -6
bc_vm_file 226 219 -7
bc_parse_text 143 133 -10
bc_parse_reset 163 153 -10
bc_parse_endBody 375 365 -10
bc_parse_create 168 158 -10
bc_parse_addFunc 41 31 -10
bc_program_call 364 352 -12
bc_program_read 350 335 -15
bc_program_execStr 528 502 -26
bc_program_exec 4219 4179 -40
------------------------------------------------------------------------------
(add/remove: 2/0 grow/shrink: 0/14 up/down: 34/-173) Total: -139 bytes
text data bss dec hex filename
985043 485 7296 992824 f2638 busybox_old
984904 485 7296 992685 f25ad busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
bc_program_print 739 736 -3
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
bc_num_printHex 62 71 +9
bc_num_printNewline 47 54 +7
bc_num_printDigits 132 136 +4
bc_num_printChar 23 27 +4
bc_program_printStream 173 163 -10
bc_program_print 754 739 -15
bc_num_printNum 538 514 -24
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 4/3 up/down: 24/-49) Total: -25 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
bc_num_printNewline 36 47 +11
bc_num_printHex 70 62 -8
bc_num_printDigits 142 132 -10
bc_program_printStream 185 173 -12
bc_program_print 773 754 -19
bc_num_printNum 563 538 -25
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/5 up/down: 11/-74) Total: -63 bytes
text data bss dec hex filename
985122 485 7296 992903 f2687 busybox_old
985059 485 7296 992840 f2648 busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
bc_read_line 285 268 -17
bc_vm_run 684 630 -54
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-71) Total: -71 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
bc_vm_run 689 684 -5
bc_program_read 355 350 -5
bc_read_line 307 285 -22
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/3 up/down: 0/-32) Total: -32 bytes
text data bss dec hex filename
985409 485 7296 993190 f27a6 busybox_old
985265 485 7296 993046 f2716 busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
bc_read_line 305 307 +2
bc_vm_run 701 689 -12
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/1 up/down: 2/-12) Total: -10 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
BC_NUM_AREQ - 45 +45
BC_NUM_MREQ - 33 +33
bc_num_rem 104 91 -13
bc_num_divmod 168 155 -13
bc_num_d 584 569 -15
bc_num_mul 80 62 -18
bc_num_mod 80 62 -18
bc_num_div 80 62 -18
bc_num_sub 112 77 -35
bc_num_add 112 77 -35
------------------------------------------------------------------------------
(add/remove: 2/0 grow/shrink: 0/8 up/down: 78/-165) Total: -87 bytes
text data bss dec hex filename
985526 485 7296 993307 f281b busybox_old
985439 485 7296 993220 f27c4 busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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arches)
Also, optimize printing of messages with fixed limit strings
by including limits as strings.
function old new delta
bc_num_ulong 103 95 -8
bc_lex_number 296 281 -15
dc_lex_token 701 684 -17
bc_lex_name 90 73 -17
bc_num_shift 72 54 -18
bc_lex_token 1299 1280 -19
bc_parse_stmt 1868 1768 -100
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/7 up/down: 0/-194) Total: -194 bytes
text data bss dec hex filename
985814 485 7296 993595 f293b busybox_old
985526 485 7296 993307 f281b busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
bc_num_ulong 103 95 -8
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
dc_lex_token 697 701 +4
bc_parse_next_rel 20 - -20
bc_parse_next_read 20 - -20
bc_parse_next_print 20 - -20
bc_parse_next_param 20 - -20
bc_parse_next_for 20 - -20
bc_parse_next_expr 20 - -20
bc_parse_next_elem 20 - -20
common_parse_expr 62 40 -22
bc_parse_expr 49 24 -25
dc_lex_regs 52 13 -39
bc_parse_name 581 539 -42
bc_parse_expr_empty_ok 2157 2108 -49
dc_parse_insts 332 83 -249
dc_lex_tokens 364 91 -273
bc_parse_stmt 2261 1868 -393
------------------------------------------------------------------------------
(add/remove: 0/7 grow/shrink: 1/8 up/down: 4/-1232) Total: -1228 bytes
text data bss dec hex filename
987037 485 7296 994818 f2e02 busybox_old
985814 485 7296 993595 f293b busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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$ echo 0/0 | ./busybox bc; echo $?
bc: divide by zero
1
$ echo halt | ./busybox bc; echo $?
0 <------- was 1
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
bc_vm_init - 821 +821
bc_vm_file - 226 +226
dc_main 41 187 +146
bc_main 41 73 +32
packed_usage 33076 33059 -17
bc_vm_run 1903 701 -1202
------------------------------------------------------------------------------
(add/remove: 2/0 grow/shrink: 2/2 up/down: 1225/-1219) Total: 6 bytes
text data bss dec hex filename
987046 485 7296 994827 f2e0b busybox_old
987037 485 7296 994818 f2e02 busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
bc_program_printStream - 185 +185
bc_program_pushArray - 147 +147
bc_program_exec 4132 4219 +87
bc_vec_pop - 27 +27
bc_vec_top - 13 +13
bc_num_ulong 92 103 +11
bc_vm_run 1905 1903 -2
bc_vm_process 94 92 -2
bc_program_reset 72 70 -2
bc_program_prep 93 91 -2
bc_program_call 366 364 -2
bc_parse_startBody 47 45 -2
bc_parse_parse 464 462 -2
bc_parse_else 137 135 -2
bc_parse_body 118 116 -2
bc_program_num 1129 1125 -4
bc_parse_text 147 143 -4
bc_program_retire 40 35 -5
bc_program_print 778 773 -5
bc_program_modexp 746 741 -5
bc_program_pushVar 215 208 -7
bc_program_copyToVar 323 316 -7
bc_parse_operator 184 177 -7
bc_parse_noElse 65 56 -9
bc_program_binOpRetire 56 46 -10
bc_parse_stmt 2271 2261 -10
bc_program_execStr 543 528 -15
bc_program_assignStr 161 146 -15
bc_parse_expr_empty_ok 2178 2157 -21
bc_parse_endBody 420 375 -45
bc_program_asciify 464 - -464
------------------------------------------------------------------------------
(add/remove: 4/1 grow/shrink: 2/24 up/down: 470/-651) Total: -181 bytes
text data bss dec hex filename
987227 485 7296 995008 f2ec0 busybox_old
987046 485 7296 994827 f2e0b busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Pulling array element into a temporary, taking address of this temporary
and copying it? That's much unnecessary work.
function old new delta
dc_lex_token 701 697 -4
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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