diff options
author | Denys Vlasenko <vda.linux@googlemail.com> | 2018-02-07 01:33:25 +0100 |
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committer | Denys Vlasenko <vda.linux@googlemail.com> | 2018-02-07 01:33:25 +0100 |
commit | 4cae044b436a842e0575c3b6787729fb436fd04c (patch) | |
tree | 4db2a80c44b27bfcbddee47b936f4a55b1315b12 /archival/libarchive | |
parent | 2b7515722b929794f2f8563b80d9cea48f6b3304 (diff) | |
download | busybox-4cae044b436a842e0575c3b6787729fb436fd04c.tar.gz |
bzip2: expose tuning knob for faster/smaller code
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'archival/libarchive')
-rw-r--r-- | archival/libarchive/bz/blocksort.c | 8 | ||||
-rw-r--r-- | archival/libarchive/bz/bzlib_private.h | 2 | ||||
-rw-r--r-- | archival/libarchive/bz/compress.c | 24 | ||||
-rw-r--r-- | archival/libarchive/bz/huffman.c | 2 |
4 files changed, 18 insertions, 18 deletions
diff --git a/archival/libarchive/bz/blocksort.c b/archival/libarchive/bz/blocksort.c index 0a9a597d0..92d6d8251 100644 --- a/archival/libarchive/bz/blocksort.c +++ b/archival/libarchive/bz/blocksort.c @@ -392,7 +392,7 @@ int mainGtU(EState* state, * but speeds up compression 10% overall */ -#if CONFIG_BZIP2_FAST >= 1 +#if BZIP2_SPEED >= 1 #define TIMES_8(code) \ code; code; code; code; \ @@ -506,7 +506,7 @@ void mainSimpleSort(EState* state, i++; /* 1.5% overall speedup, +290 bytes */ -#if CONFIG_BZIP2_FAST >= 3 +#if BZIP2_SPEED >= 3 /*-- copy 2 --*/ if (i > hi) break; v = ptr[i]; @@ -755,7 +755,7 @@ void mainSort(EState* state) j = block[0] << 8; i = nblock - 1; /* 3%, +300 bytes */ -#if CONFIG_BZIP2_FAST >= 2 +#if BZIP2_SPEED >= 2 for (; i >= 3; i -= 4) { quadrant[i] = 0; j = (j >> 8) | (((unsigned)block[i]) << 8); @@ -794,7 +794,7 @@ void mainSort(EState* state) unsigned s; s = block[0] << 8; i = nblock - 1; -#if CONFIG_BZIP2_FAST >= 2 +#if BZIP2_SPEED >= 2 for (; i >= 3; i -= 4) { s = (s >> 8) | (block[i] << 8); j = ftab[s] - 1; diff --git a/archival/libarchive/bz/bzlib_private.h b/archival/libarchive/bz/bzlib_private.h index ef75ef08a..ea0f29b7c 100644 --- a/archival/libarchive/bz/bzlib_private.h +++ b/archival/libarchive/bz/bzlib_private.h @@ -188,7 +188,7 @@ typedef struct EState { /* stack-saving measures: these can be local, but they are too big */ int32_t sendMTFValues__code [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE]; int32_t sendMTFValues__rfreq[BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE]; -#if CONFIG_BZIP2_FAST >= 5 +#if BZIP2_SPEED >= 5 /* second dimension: only 3 needed; 4 makes index calculations faster */ uint32_t sendMTFValues__len_pack[BZ_MAX_ALPHA_SIZE][4]; #endif diff --git a/archival/libarchive/bz/compress.c b/archival/libarchive/bz/compress.c index 462740b6c..539ab927e 100644 --- a/archival/libarchive/bz/compress.c +++ b/archival/libarchive/bz/compress.c @@ -32,6 +32,12 @@ in the file LICENSE. /* #include "bzlib_private.h" */ +#if BZIP2_SPEED >= 5 +# define ALWAYS_INLINE_5 ALWAYS_INLINE +#else +# define ALWAYS_INLINE_5 /*nothing*/ +#endif + /*---------------------------------------------------*/ /*--- Bit stream I/O ---*/ /*---------------------------------------------------*/ @@ -60,9 +66,7 @@ void bsFinishWrite(EState* s) /*---------------------------------------------------*/ static /* Helps only on level 5, on other levels hurts. ? */ -#if CONFIG_BZIP2_FAST >= 5 -ALWAYS_INLINE -#endif +ALWAYS_INLINE_5 void bsW(EState* s, int32_t n, uint32_t v) { while (s->bsLive >= 8) { @@ -75,9 +79,7 @@ void bsW(EState* s, int32_t n, uint32_t v) } /* Same with n == 16: */ static -#if CONFIG_BZIP2_FAST >= 5 -ALWAYS_INLINE -#endif +ALWAYS_INLINE_5 void bsW16(EState* s, uint32_t v) { while (s->bsLive >= 8) { @@ -103,9 +105,7 @@ void bsW1_1(EState* s) s->bsLive += 1; } static -#if CONFIG_BZIP2_FAST >= 5 -ALWAYS_INLINE -#endif +ALWAYS_INLINE_5 void bsW1_0(EState* s) { /* need space for only 1 bit, no need for loop freeing > 8 bits */ @@ -394,7 +394,7 @@ void sendMTFValues(EState* s) s->rfreq[t][v] = 0; } -#if CONFIG_BZIP2_FAST >= 5 +#if BZIP2_SPEED >= 5 /* * Set up an auxiliary length table which is used to fast-track * the common case (nGroups == 6). @@ -427,7 +427,7 @@ void sendMTFValues(EState* s) */ for (t = 0; t < nGroups; t++) cost[t] = 0; -#if CONFIG_BZIP2_FAST >= 5 +#if BZIP2_SPEED >= 5 if (nGroups == 6 && 50 == ge-gs+1) { /*--- fast track the common case ---*/ register uint32_t cost01, cost23, cost45; @@ -483,7 +483,7 @@ void sendMTFValues(EState* s) * Increment the symbol frequencies for the selected table. */ /* 1% faster compress. +800 bytes */ -#if CONFIG_BZIP2_FAST >= 4 +#if BZIP2_SPEED >= 4 if (nGroups == 6 && 50 == ge-gs+1) { /*--- fast track the common case ---*/ #define BZ_ITUR(nn) s->rfreq[bt][mtfv[gs + (nn)]]++ diff --git a/archival/libarchive/bz/huffman.c b/archival/libarchive/bz/huffman.c index be5930e00..dc851cd3f 100644 --- a/archival/libarchive/bz/huffman.c +++ b/archival/libarchive/bz/huffman.c @@ -48,7 +48,7 @@ in the file LICENSE. /* 90 bytes, 0.3% of overall compress speed */ -#if CONFIG_BZIP2_FAST >= 1 +#if BZIP2_SPEED >= 1 /* macro works better than inline (gcc 4.2.1) */ #define DOWNHEAP1(heap, weight, Heap) \ |