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refactor: do some internal refactor.

This commit is contained in:
Haojun Liao 2023-01-06 18:41:22 +08:00
parent db48c2350d
commit f408c795da
1 changed files with 20 additions and 27 deletions
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47
source/util/src/tcompression.c
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@ -285,41 +285,38 @@ int32_t tsDecompressINTImp(const char *const input, const int32_t nelements, cha
if (selector == 0 || selector == 1) {
#if 1
int32_t batch = elems >> 2;
int32_t remainder = elems & 0x03;
int32_t gBatch = (nelements - count) >> 2;
int32_t minBatch = TMIN(batch, gBatch);
for(int32_t i = 0; i < minBatch; ++i) {
p[_pos++] = prev_value;
p[_pos++] = prev_value;
p[_pos++] = prev_value;
p[_pos++] = prev_value;
}
count += (minBatch << 2);
int32_t gRemainder = nelements - count;
int32_t minRemain = TMIN(remainder, gRemainder);
int32_t num = gRemainder > elems? elems:gRemainder;
for (int32_t i = 0; i < minRemain; ++i) {
int32_t batch = num >> 2;
int32_t remainder = num & 0x03;
for (int32_t i = 0; i < batch; ++i) {
p[_pos++] = prev_value;
p[_pos++] = prev_value;
p[_pos++] = prev_value;
p[_pos++] = prev_value;
}
count += minRemain;
for (int32_t i = 0; i < remainder; ++i) {
p[_pos++] = prev_value;
}
count += num;
#else
for (int32_t i = 0; i < elems && count < nelements; i++, count++) {
p[_pos++] = prev_value;
}
#endif
} else {
int32_t batch = elems >> 2;
int32_t remain = elems & 0x03;
int32_t globalBatch = (nelements - count) >> 2;
int32_t gRemainder = (nelements - count);
int32_t minBatch = TMIN(batch, globalBatch);
int32_t num = gRemainder > elems? elems:gRemainder;
int32_t batch = num >> 2;
int32_t remain = num & 0x03;
#if 1
// manual unrolling, to erase the hotspot
for (int32_t i = 0; i < minBatch; ++i) {
for (int32_t i = 0; i < batch; ++i) {
zigzag_value = ((w >> v) & mask);
prev_value += ZIGZAG_DECODE(int64_t, zigzag_value);
@ -346,11 +343,7 @@ int32_t tsDecompressINTImp(const char *const input, const int32_t nelements, cha
}
// handle the remain
count += (minBatch << 2);
int32_t globalRemain = (nelements - count);
int32_t minRemain = TMIN(remain, globalRemain);
for (int32_t i = 0; i < minRemain; i++) {
for (int32_t i = 0; i < remain; i++) {
zigzag_value = ((w >> v) & mask);
prev_value += ZIGZAG_DECODE(int64_t, zigzag_value);
@ -358,7 +351,7 @@ int32_t tsDecompressINTImp(const char *const input, const int32_t nelements, cha
v += bit;
}
count += minRemain;
count += num;
#else
for (int32_t i = 0; i < elems && count < nelements; i++, count++) {
zigzag_value = ((w >> (4 + v)) & mask);