forks/busybox/archival/libarchive/bz, branch master

decrease paddign: gcc-9.3.1 slaps 32-byte alignment on arrays willy-nilly

2020-11-30T12:03:03+00:00

text data bss dec hex filename 1021988 559 5052 1027599 fae0f busybox_old 1021236 559 5052 1026847 fab1f busybox_unstripped Signed-off-by: Denys Vlasenko

bzip2: expose tuning knob for faster/smaller code

2018-02-07T00:33:25+00:00

Signed-off-by: Denys Vlasenko

bzip2: work around bad compiler optimization

2018-02-04T23:34:08+00:00

gc-6.1.1 x86_64: function old new delta generateMTFValues 380 367 -13 gcc-4.3.1 386: function old new delta inner_loop - 41 +41 generateMTFValues 357 294 -63 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 0/1 up/down: 41/-63) Total: -22 bytes gcc-6.3.0 386: function old new delta inner_loop - 36 +36 generateMTFValues 363 250 -113 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 0/1 up/down: 36/-113) Total: -77 bytes The last case, gcc-6.3.0, runs almost 3 times faster after this change. Signed-off-by: Denys Vlasenko

bzip2: move runningOrder[] back to stack - 256 bytes is not much

2018-02-03T21:52:55+00:00

function old new delta mainSort 1119 1108 -11 Signed-off-by: Denys Vlasenko

bzip2: move ->origPtr out of struct EState, make a few members smaller

2018-02-03T19:51:12+00:00

function old new delta BZ2_compressBlock 223 228 +5 BZ2_blockSort 85 88 +3 generateMTFValues 356 357 +1 handle_compress 355 349 -6 compressStream 538 531 -7 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 3/2 up/down: 9/-13) Total: -4 bytes Signed-off-by: Denys Vlasenko

bzip2: pass sorting params through EState* pointer

2018-02-03T19:19:51+00:00

function old new delta mainGtU 499 515 +16 sendMTFValues 2085 2094 +9 mainSort 1116 1119 +3 generateMTFValues 357 356 -1 fallbackSort 1719 1705 -14 mainQSort3 1163 1141 -22 BZ2_blockSort 118 85 -33 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 3/4 up/down: 28/-70) Total: -42 bytes Signed-off-by: Denys Vlasenko

gzip2: small simplification in mainSimpleSort()

2018-02-03T18:11:00+00:00

function old new delta mainQSort3 1165 1163 -2 Signed-off-by: Denys Vlasenko

bzip2: a few more locals converted to generic types

2018-02-03T17:47:34+00:00

Signed-off-by: Denys Vlasenko

bzip2: eliminate one parameter to mainQSort3()

2018-02-03T17:28:10+00:00

Signed-off-by: Denys Vlasenko

bzip2: small simplification in mainSort()

2018-02-03T17:11:08+00:00

function old new delta mainSort 1127 1118 -9 Signed-off-by: Denys Vlasenko