[HIVE-11533] Loop optimization for SIMD in integer comparisons - ASF JIRA

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Details

Type: Sub-task
Status: Closed
Priority: Minor
Resolution: Fixed
Affects Version/s: None
Fix Version/s: 2.0.0
Component/s: Vectorization
Labels:
None

Description

Long*CompareLong* classes can be optimized with subtraction and bitwise operators for better SIMD optimization.

for(int i = 0; i != n; i++) {
  outputVector[i] = vector1[0] > vector2[i] ? 1 : 0;
}

This issue will cover following classes;

LongColEqualLongColumn
LongColNotEqualLongColumn
LongColGreaterLongColumn
LongColGreaterEqualLongColumn
LongColLessLongColumn
LongColLessEqualLongColumn
LongScalarEqualLongColumn
LongScalarNotEqualLongColumn
LongScalarGreaterLongColumn
LongScalarGreaterEqualLongColumn
LongScalarLessLongColumn
LongScalarLessEqualLongColumn
LongColEqualLongScalar
LongColNotEqualLongScalar
LongColGreaterLongScalar
LongColGreaterEqualLongScalar
LongColLessLongScalar
LongColLessEqualLongScalar

Attachments

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HIVE-11533.5.patch
10/Oct/15 13:57
123 kB
Teddy Choi
HIVE-11533.4.patch
06/Oct/15 23:45
124 kB
Teddy Choi
HIVE-11533.3.patch
06/Oct/15 02:13
124 kB
Teddy Choi
HIVE-11533.2.patch
05/Oct/15 15:17
120 kB
Teddy Choi
HIVE-11533.1.patch
23/Sep/15 16:49
120 kB
Teddy Choi

Activity

People

Assignee:: Teddy Choi

Reporter:: Teddy Choi

Votes:: 0 Vote for this issue

Watchers:: 2 Start watching this issue

Dates

Created:: 11/Aug/15 23:39

Updated:: 16/Feb/16 23:50

Resolved:: 13/Oct/15 09:46