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enh(query): unfold the loop.

This commit is contained in:
Haojun Liao 2022-11-09 15:50:31 +08:00
parent 2ee0cf6701
commit fa45cd2ce8
1 changed files with 59 additions and 0 deletions
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59
source/libs/function/src/builtinsimpl.c
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@ -3113,6 +3113,7 @@ int32_t lastFunction(SqlFunctionCtx* pCtx) {
}
}
} else {
#if 0
for (int32_t i = pInput->startRowIndex; i < pInput->numOfRows + pInput->startRowIndex; ++i) {
if (pInputCol->hasNull && colDataIsNull(pInputCol, pInput->totalRows, i, pColAgg)) {
continue;
@ -3127,6 +3128,64 @@ int32_t lastFunction(SqlFunctionCtx* pCtx) {
pResInfo->numOfRes = 1;
}
}
#else
if (!pInputCol->hasNull) {
int32_t round = pInput->numOfRows >> 2;
int32_t reminder = pInput->numOfRows & 0x03;
int32_t tick = 0;
for (int32_t i = pInput->startRowIndex; tick < round; i += 4, tick += 1) {
int64_t cts = pts[i];
int32_t chosen = i;
if (cts < pts[i + 1]) {
cts = pts[i + 1];
chosen = i + 1;
}
if (cts < pts[i + 2]) {
cts = pts[i + 2];
chosen = i + 2;
}
if (cts < pts[i + 3]) {
cts = pts[i + 3];
chosen = i + 3;
}
if (pResInfo->numOfRes == 0 || pInfo->ts < cts) {
char* data = colDataGetNumData(pInputCol, chosen);
doSaveCurrentVal(pCtx, i, cts, type, data);
pResInfo->numOfRes = 1;
}
}
for (int32_t i = pInput->startRowIndex + round * 4; i < pInput->startRowIndex + pInput->numOfRows; ++i) {
numOfElems++;
TSKEY cts = pts[i];
if (pResInfo->numOfRes == 0 || pInfo->ts < cts) {
char* data = colDataGetNumData(pInputCol, i);
doSaveCurrentVal(pCtx, i, cts, type, data);
pResInfo->numOfRes = 1;
}
}
} else {
for (int32_t i = pInput->startRowIndex; i < pInput->startRowIndex + pInput->numOfRows; ++i) {
if (pInputCol->hasNull && colDataIsNull(pInputCol, pInput->totalRows, i, pColAgg)) {
continue;
}
numOfElems++;
if (pResInfo->numOfRes == 0 || pInfo->ts < pts[i]) {
char* data = colDataGetNumData(pInputCol, i);
doSaveCurrentVal(pCtx, i, pts[i], type, data);
pResInfo->numOfRes = 1;
}
}
}
#endif
}
#endif