Initial QSfera import

Server/vendor/github.com/zeebo/xxh3/accum_stubs_arm64.go

@@ -0,0 +1,29 @@
+//go:build arm64
+
+package xxh3
+
+import "unsafe"
+
+const (
+	hasAVX2   = false
+	hasSSE2   = false
+	hasAVX512 = false
+	hasNEON   = true
+)
+
+//go:noescape
+func accumNEON(acc *[8]u64, data, key unsafe.Pointer, len u64)
+
+//go:noescape
+func accumBlockNEON(acc *[8]u64, data, key unsafe.Pointer)
+func accumAVX2(acc *[8]u64, data, key unsafe.Pointer, len u64)   { panic("unreachable") }
+func accumSSE(acc *[8]u64, data, key unsafe.Pointer, len u64)    { panic("unreachable") }
+func accumBlockAVX2(acc *[8]u64, data, key unsafe.Pointer)       { panic("unreachable") }
+func accumBlockSSE(acc *[8]u64, data, key unsafe.Pointer)        { panic("unreachable") }
+func accumAVX512(acc *[8]u64, data, key unsafe.Pointer, len u64) { panic("unreachable") }
+func accumBlockAVX512(acc *[8]u64, data, key unsafe.Pointer)     { panic("unreachable") }
+
+func withAVX512(cb func())  { cb() }
+func withAVX2(cb func())    { cb() }
+func withSSE2(cb func())    { cb() }
+func withGeneric(cb func()) { cb() }