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// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//go:build go1.18 && !noasm
package kernels
import (
"unsafe"
"github.com/apache/arrow-go/v18/arrow"
"golang.org/x/sys/cpu"
)
var pureGo bool
type cmpfn func(arrow.Type, []byte, []byte, []byte, int64, int)
var comparisonMap map[CompareOperator][3]cmpfn
func genCompareKernel[T arrow.NumericType](op CompareOperator) *CompareData {
if pureGo {
return genGoCompareKernel(getCmpOp[T](op))
}
ty := arrow.GetType[T]()
byteWidth := int(unsafe.Sizeof(T(0)))
comparisonFns := comparisonMap[op]
return &CompareData{
funcAA: func(left, right, out []byte, offset int) {
length := int64(len(left) / byteWidth)
comparisonFns[0](ty, left, right, out, length, offset)
},
funcAS: func(left, right, out []byte, offset int) {
length := int64(len(left) / byteWidth)
comparisonFns[1](ty, left, right, out, length, offset)
},
funcSA: func(left, right, out []byte, offset int) {
length := int64(len(right) / byteWidth)
comparisonFns[2](ty, left, right, out, length, offset)
},
}
}
func init() {
if cpu.X86.HasAVX2 {
comparisonMap = map[CompareOperator][3]cmpfn{
CmpEQ: {
comparisonEqualArrArrAvx2,
comparisonEqualArrScalarAvx2,
comparisonEqualScalarArrAvx2,
},
CmpNE: {
comparisonNotEqualArrArrAvx2,
comparisonNotEqualArrScalarAvx2,
comparisonNotEqualScalarArrAvx2,
},
CmpGT: {
comparisonGreaterArrArrAvx2,
comparisonGreaterArrScalarAvx2,
comparisonGreaterScalarArrAvx2,
},
CmpGE: {
comparisonGreaterEqualArrArrAvx2,
comparisonGreaterEqualArrScalarAvx2,
comparisonGreaterEqualScalarArrAvx2,
},
}
} else if cpu.X86.HasSSE42 {
comparisonMap = map[CompareOperator][3]cmpfn{
CmpEQ: {
comparisonEqualArrArrSSE4,
comparisonEqualArrScalarSSE4,
comparisonEqualScalarArrSSE4,
},
CmpNE: {
comparisonNotEqualArrArrSSE4,
comparisonNotEqualArrScalarSSE4,
comparisonNotEqualScalarArrSSE4,
},
CmpGT: {
comparisonGreaterArrArrSSE4,
comparisonGreaterArrScalarSSE4,
comparisonGreaterScalarArrSSE4,
},
CmpGE: {
comparisonGreaterEqualArrArrSSE4,
comparisonGreaterEqualArrScalarSSE4,
comparisonGreaterEqualScalarArrSSE4,
},
}
} else {
pureGo = true
}
}
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