mirror of
https://github.com/superseriousbusiness/gotosocial.git
synced 2024-11-01 06:50:00 +00:00
41 lines
1.1 KiB
Go
41 lines
1.1 KiB
Go
package xxh3
|
|
|
|
import (
|
|
"unsafe"
|
|
|
|
"github.com/klauspost/cpuid/v2"
|
|
)
|
|
|
|
var (
|
|
hasAVX2 = cpuid.CPU.Has(cpuid.AVX2)
|
|
hasSSE2 = cpuid.CPU.Has(cpuid.SSE2) // Always true on amd64
|
|
hasAVX512 = cpuid.CPU.Has(cpuid.AVX512F)
|
|
)
|
|
|
|
//go:noescape
|
|
func accumAVX2(acc *[8]u64, data, key unsafe.Pointer, len u64)
|
|
|
|
//go:noescape
|
|
func accumAVX512(acc *[8]u64, data, key unsafe.Pointer, len u64)
|
|
|
|
//go:noescape
|
|
func accumSSE(acc *[8]u64, data, key unsafe.Pointer, len u64)
|
|
|
|
//go:noescape
|
|
func accumBlockAVX2(acc *[8]u64, data, key unsafe.Pointer)
|
|
|
|
//go:noescape
|
|
func accumBlockSSE(acc *[8]u64, data, key unsafe.Pointer)
|
|
|
|
func withOverrides(avx512, avx2, sse2 bool, cb func()) {
|
|
avx512Orig, avx2Orig, sse2Orig := hasAVX512, hasAVX2, hasSSE2
|
|
hasAVX512, hasAVX2, hasSSE2 = avx512, avx2, sse2
|
|
defer func() { hasAVX512, hasAVX2, hasSSE2 = avx512Orig, avx2Orig, sse2Orig }()
|
|
cb()
|
|
}
|
|
|
|
func withAVX512(cb func()) { withOverrides(hasAVX512, false, false, cb) }
|
|
func withAVX2(cb func()) { withOverrides(false, hasAVX2, false, cb) }
|
|
func withSSE2(cb func()) { withOverrides(false, false, hasSSE2, cb) }
|
|
func withGeneric(cb func()) { withOverrides(false, false, false, cb) }
|