mirror of
https://github.com/fumiama/blake2b-simd.git
synced 2026-06-05 18:20:29 +08:00
3a46db1cb4
With this change, following happens.
```
if sse {
compressSSE()
return
}
compressGeneric()
```
compressGeneric is used as a fallback when SSE is not detected.
30 lines
926 B
Go
30 lines
926 B
Go
// +build 386,!gccgo amd64,!gccgo
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// Copyright 2016 Frank Wessels <fwessels@xs4all.nl>
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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package blake2b
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func cpuid(op uint32) (eax, ebx, ecx, edx uint32)
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// True when SIMD instructions are available.
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var sse = haveSSE()
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// haveSSE returns true if we have streaming SIMD instructions.
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func haveSSE() bool {
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_, _, _, d := cpuid(1)
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return (d & (1 << 25)) != 0
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}
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