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gzip2: small simplification in mainSimpleSort()

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function                                             old     new   delta
mainQSort3                                          1165    1163      -2

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2018-02-03 19:11:00 +01:00
parent 0599a137ba
commit 10f516500e
1 changed files with 15 additions and 14 deletions
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27
archival/libarchive/bz/blocksort.c
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@ -468,15 +468,16 @@ void mainSimpleSort(uint32_t* ptr,
int32_t d,
int32_t* budget)
{
int32_t bigN;
int hp;
bigN = hi - lo + 1;
if (bigN < 2) return;
hp = 0;
while (incs[hp] < bigN) hp++;
/* At which increment to start? */
int hp = 0;
{
int bigN = hi - lo;
if (bigN <= 0)
return;
while (incs[hp] <= bigN)
hp++;
hp--;
}
for (; hp >= 0; hp--) {
int32_t i;
@ -754,22 +755,22 @@ void mainSort(EState* state,
#if CONFIG_BZIP2_FAST >= 2
for (; i >= 3; i -= 4) {
quadrant[i] = 0;
j = (j >> 8) | (((uint16_t)block[i]) << 8);
j = (j >> 8) | (((unsigned)block[i]) << 8);
ftab[j]++;
quadrant[i-1] = 0;
j = (j >> 8) | (((uint16_t)block[i-1]) << 8);
j = (j >> 8) | (((unsigned)block[i-1]) << 8);
ftab[j]++;
quadrant[i-2] = 0;
j = (j >> 8) | (((uint16_t)block[i-2]) << 8);
j = (j >> 8) | (((unsigned)block[i-2]) << 8);
ftab[j]++;
quadrant[i-3] = 0;
j = (j >> 8) | (((uint16_t)block[i-3]) << 8);
j = (j >> 8) | (((unsigned)block[i-3]) << 8);
ftab[j]++;
}
#endif
for (; i >= 0; i--) {
quadrant[i] = 0;
j = (j >> 8) | (((uint16_t)block[i]) << 8);
j = (j >> 8) | (((unsigned)block[i]) << 8);
ftab[j]++;
}