[dev.simd] internal: delete unused internal/simd directory

this completes the move to "simd"

Change-Id: Id2c2707b7b308fb12eb33af705750ce0db2b0fd8
Reviewed-on: https://go-review.googlesource.com/c/go/+/677258
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Junyang Shao <shaojunyang@google.com>
Reviewed-by: Junyang Shao <shaojunyang@google.com>

diff --git a/src/internal/simd/dummy.s b/src/internal/simd/dummy.s
deleted file mode 100644 (file)
index f78313a..0000000
--- a/src/internal/simd/dummy.s
+++ /dev/null
@@ -1,7 +0,0 @@
-// Copyright 2025 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-//go:build amd64
-
-// Empty file to allow bodyless functions.

diff --git a/src/internal/simd/testdata/sample.go b/src/internal/simd/testdata/sample.go
deleted file mode 100644 (file)
index 0966912..0000000
--- a/src/internal/simd/testdata/sample.go
+++ /dev/null
@@ -1,145 +0,0 @@
-package sample
-
-import (
-       "internal/simd"
-       "os"
-       "unsafe"
-)
-
-type S1 = simd.Float64x4
-
-type S2 simd.Float64x4
-
-func (s S2) Len() int {
-       return simd.Float64x4(s).Len()
-}
-
-func (s S2) Load(a []float64) S2 {
-       return S2(simd.LoadFloat64x4FromSlice(a))
-}
-
-func (s S2) Store(a []float64) {
-       simd.Float64x4(s).Store(a)
-}
-
-func (s S2) Add(a S2) S2 {
-       return S2(simd.Float64x4(s).Add(simd.Float64x4(a)))
-}
-
-func (s S2) Mul(a S2) S2 {
-       return S2(simd.Float64x4(s).Mul(simd.Float64x4(a)))
-}
-
-type S3 struct {
-       simd.Float64x4
-}
-
-func ip64_0(a, b []float64) float64 {
-       s := 0.0
-       for i := range a {
-               s += a[i] * b[i]
-       }
-       return s
-}
-
-func ip64_1(a, b []float64) float64 {
-       var z S1
-       sum := z
-       var i int
-       stride := z.Len()
-       for ; i <= len(a)-stride; i += stride {
-               va := simd.LoadFloat64x4FromSlice(a[i:])
-               vb := simd.LoadFloat64x4FromSlice(b[i:])
-               sum = sum.Add(va.Mul(vb))
-       }
-       var tmp [4]float64
-       sum.Store(tmp[:])
-       return tmp[0] + tmp[1] + tmp[2] + tmp[3]
-}
-
-func ip64_1a(a, b []float64) float64 {
-       var z S1
-       sum := z
-       var i int
-       stride := z.Len()
-       for ; i <= len(a)-stride; i += stride {
-               va := simd.LoadFloat64x4FromSlice(a[i:])
-               vb := simd.LoadFloat64x4FromSlice(b[i:])
-               sum = FMA(sum, va, vb)
-       }
-       var tmp [4]float64
-       sum.Store(tmp[:])
-       return tmp[0] + tmp[1] + tmp[2] + tmp[3]
-}
-
-//go:noinline
-func FMA(a, b, c simd.Float64x4) simd.Float64x4 {
-       return a.Add(b.Mul(c))
-}
-
-func ip64_2(a, b []float64) float64 {
-       var z S2
-       sum := z
-       var i int
-       stride := z.Len()
-       for ; i <= len(a)-stride; i += stride {
-               va := z.Load(a[i:])
-               vb := z.Load(b[i:])
-               sum = sum.Add(va.Mul(vb))
-       }
-       var tmp [4]float64
-       sum.Store(tmp[:])
-       return tmp[0] + tmp[1] + tmp[2] + tmp[3]
-}
-
-func ip64_3(a, b []float64) float64 {
-       var z S3
-       sum := z
-       var i int
-       stride := z.Len()
-       for ; i <= len(a)-stride; i += stride {
-               va := simd.LoadFloat64x4FromSlice(a[i:])
-               vb := simd.LoadFloat64x4FromSlice(b[i:])
-               sum = S3{sum.Add(va.Mul(vb))}
-       }
-       var tmp [4]float64
-       sum.Store(tmp[:])
-       return tmp[0] + tmp[1] + tmp[2] + tmp[3]
-}
-
-func main() {
-       a := []float64{1, 2, 3, 4, 5, 6, 7, 8}
-       ip0 := ip64_0(a, a)
-       ip1 := ip64_1(a, a)
-       ip1a := ip64_1a(a, a)
-       ip2 := ip64_2(a, a)
-       ip3 := ip64_3(a, a)
-       fmt.Printf("Test IP    = %f\n", ip0)
-       fmt.Printf("SIMD IP 1  = %f\n", ip1)
-       fmt.Printf("SIMD IP 1a = %f\n", ip1a)
-       fmt.Printf("SIMD IP 2  = %f\n", ip2)
-       fmt.Printf("SIMD IP 3 = %f\n", ip3)
-       var z1 S1
-       var z2 S2
-       var z3 S2
-
-       s1, s2, s3 := unsafe.Sizeof(z1), unsafe.Sizeof(z2), unsafe.Sizeof(z3)
-
-       fmt.Printf("unsafe.Sizeof(z1, z2, z3)=%d, %d, %d\n", s1, s2, s3)
-
-       fail := false
-
-       if s1 != 32 || s2 != 32 || s3 != 32 {
-               fmt.Println("Failed a sizeof check, should all be 32")
-               fail = true
-       }
-
-       if ip1 != ip0 || ip1a != ip0 || ip2 != ip0 || ip3 != ip0 {
-               fmt.Println("Failed an inner product check, should all be", ip0)
-               fail = true
-       }
-
-       if fail {
-               os.Exit(1)
-       }
-}