1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
// 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 !noasm
package utils
import (
"os"
"strings"
"golang.org/x/sys/cpu"
)
func init() {
// Added ability to enable extension via environment:
// ARM_ENABLE_EXT=NEON go test
if ext, ok := os.LookupEnv("ARM_ENABLE_EXT"); ok {
exts := strings.Split(ext, ",")
for _, x := range exts {
switch x {
case "NEON":
cpu.ARM64.HasASIMD = true
case "AES":
cpu.ARM64.HasAES = true
case "PMULL":
cpu.ARM64.HasPMULL = true
default:
cpu.ARM64.HasASIMD = false
cpu.ARM64.HasAES = false
cpu.ARM64.HasPMULL = false
}
}
}
if cpu.ARM64.HasASIMD {
minmaxFuncs.i32 = int32MaxMinNEON
minmaxFuncs.ui32 = uint32MaxMinNEON
minmaxFuncs.i64 = int64MaxMinNEON
minmaxFuncs.ui64 = uint64MaxMinNEON
} else {
minmaxFuncs.i32 = int32MinMax
minmaxFuncs.ui32 = uint32MinMax
minmaxFuncs.i64 = int64MinMax
minmaxFuncs.ui64 = uint64MinMax
}
// haven't yet generated the NEON arm64 for these
minmaxFuncs.i8 = int8MinMax
minmaxFuncs.ui8 = uint8MinMax
minmaxFuncs.i16 = int16MinMax
minmaxFuncs.ui16 = uint16MinMax
}
|
