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authorLasse Collin <lasse.collin@tukaani.org>2008-12-27 19:32:20 +0200
committerLasse Collin <lasse.collin@tukaani.org>2008-12-27 19:32:20 +0200
commit050eb14d29e2537c014662e83599fd8a77f13c45 (patch)
tree9b5cb2a9d5d7c379901df59b7273b4c98a54fbd6 /src/liblzma/lzma/lzma_encoder_optimum_fast.c
parentSome xz command line tool improvements. (diff)
downloadxz-050eb14d29e2537c014662e83599fd8a77f13c45.tar.xz
Revert a change made in 3b34851de1eaf358cf9268922fa0eeed8278d680
that was related to LZMA_MODE_FAST. The original code is slightly faster although it compresses slightly worse. But since it is fast mode, it is better to select the faster version.
Diffstat (limited to 'src/liblzma/lzma/lzma_encoder_optimum_fast.c')
-rw-r--r--src/liblzma/lzma/lzma_encoder_optimum_fast.c23
1 files changed, 8 insertions, 15 deletions
diff --git a/src/liblzma/lzma/lzma_encoder_optimum_fast.c b/src/liblzma/lzma/lzma_encoder_optimum_fast.c
index 4e8e26a2..a13adbe4 100644
--- a/src/liblzma/lzma/lzma_encoder_optimum_fast.c
+++ b/src/liblzma/lzma/lzma_encoder_optimum_fast.c
@@ -23,17 +23,6 @@
(((big_dist) >> 7) > (small_dist))
-static inline void
-literal(const lzma_coder *restrict coder, const uint8_t *restrict buf,
- uint32_t *restrict back_res, uint32_t *restrict len_res)
-{
- // Try short rep0 instead of always coding it as a literal.
- *back_res = *buf == *(buf - coder->reps[0] - 1) ? 0 : UINT32_MAX;
- *len_res = 1;
- return;
-}
-
-
extern void
lzma_lzma_optimum_fast(lzma_coder *restrict coder, lzma_mf *restrict mf,
uint32_t *restrict back_res, uint32_t *restrict len_res)
@@ -55,7 +44,8 @@ lzma_lzma_optimum_fast(lzma_coder *restrict coder, lzma_mf *restrict mf,
if (buf_avail < 2) {
// There's not enough input left to encode a match.
- literal(coder, buf, back_res, len_res);
+ *back_res = UINT32_MAX;
+ *len_res = 1;
return;
}
@@ -137,7 +127,8 @@ lzma_lzma_optimum_fast(lzma_coder *restrict coder, lzma_mf *restrict mf,
}
if (len_main < 2 || buf_avail <= 2) {
- literal(coder, buf, back_res, len_res);
+ *back_res = UINT32_MAX;
+ *len_res = 1;
return;
}
@@ -158,7 +149,8 @@ lzma_lzma_optimum_fast(lzma_coder *restrict coder, lzma_mf *restrict mf,
|| (coder->longest_match_length + 1 >= len_main
&& len_main >= 3
&& change_pair(new_dist, back_main))) {
- literal(coder, buf, back_res, len_res);
+ *back_res = UINT32_MAX;
+ *len_res = 1;
return;
}
}
@@ -181,7 +173,8 @@ lzma_lzma_optimum_fast(lzma_coder *restrict coder, lzma_mf *restrict mf,
&& buf[len] == buf_back[len]; ++len) ;
if (len >= limit) {
- literal(coder, buf - 1, back_res, len_res);
+ *back_res = UINT32_MAX;
+ *len_res = 1;
return;
}
}