[dev.simd] simd: reorganize internal tests so that simd does not import testing

Change-Id: Id68835fd8f93d2252a072132ff1b8ee39f197977
Reviewed-on: https://go-review.googlesource.com/c/go/+/721940
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>

diff --git a/src/simd/export_test.go b/src/simd/export_test.go
new file mode 100644 (file)
index 0000000..c6e9c4a
--- /dev/null
+++ b/src/simd/export_test.go
@@ -0,0 +1,64 @@
+// 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 goexperiment.simd && amd64
+
+// This exposes some internal interfaces to simd_test.
+
+package simd
+
+func (x Int64x2) ExportTestConcatSelectedConstant(indices uint8, y Int64x2) Int64x2 {
+       return x.concatSelectedConstant(indices, y)
+}
+
+func (x Float64x4) ExportTestConcatSelectedConstantGrouped(indices uint8, y Float64x4) Float64x4 {
+       return x.concatSelectedConstantGrouped(indices, y)
+}
+
+func (x Float32x4) ExportTestConcatSelectedConstant(indices uint8, y Float32x4) Float32x4 {
+       return x.concatSelectedConstant(indices, y)
+}
+
+func (x Int32x4) ExportTestConcatSelectedConstant(indices uint8, y Int32x4) Int32x4 {
+       return x.concatSelectedConstant(indices, y)
+}
+
+func (x Uint32x8) ExportTestConcatSelectedConstantGrouped(indices uint8, y Uint32x8) Uint32x8 {
+       return x.concatSelectedConstantGrouped(indices, y)
+}
+
+func (x Int32x8) ExportTestConcatSelectedConstantGrouped(indices uint8, y Int32x8) Int32x8 {
+       return x.concatSelectedConstantGrouped(indices, y)
+}
+
+func (x Int32x8) ExportTestTern(table uint8, y Int32x8, z Int32x8) Int32x8 {
+       return x.tern(table, y, z)
+}
+
+func (x Int32x4) ExportTestTern(table uint8, y Int32x4, z Int32x4) Int32x4 {
+       return x.tern(table, y, z)
+}
+
+func ExportTestCscImm4(a, b, c, d uint8) uint8 {
+       return cscimm4(a, b, c, d)
+}
+
+const (
+       LLLL = _LLLL
+       HLLL = _HLLL
+       LHLL = _LHLL
+       HHLL = _HHLL
+       LLHL = _LLHL
+       HLHL = _HLHL
+       LHHL = _LHHL
+       HHHL = _HHHL
+       LLLH = _LLLH
+       HLLH = _HLLH
+       LHLH = _LHLH
+       HHLH = _HHLH
+       LLHH = _LLHH
+       HLHH = _HLHH
+       LHHH = _LHHH
+       HHHH = _HHHH
+)

diff --git a/src/simd/pkginternal_test.go b/src/simd/pkginternal_test.go
index baaafdbdc11f093d6165b17d6d7ca38a4d4f451c..abaa8330e41d3e30e5cd13a03f00ecc7829d926b 100644 (file)
--- a/src/simd/pkginternal_test.go
+++ b/src/simd/pkginternal_test.go
@@ -4,58 +4,59 @@
 
 //go:build goexperiment.simd && amd64
 
-package simd
+package simd_test
 
 import (
+       "simd"
        "simd/internal/test_helpers"
        "testing"
 )
 
 func TestConcatSelectedConstant64(t *testing.T) {
        a := make([]int64, 2)
-       x := LoadInt64x2Slice([]int64{4, 5})
-       y := LoadInt64x2Slice([]int64{6, 7})
-       z := x.concatSelectedConstant(0b10, y)
+       x := simd.LoadInt64x2Slice([]int64{4, 5})
+       y := simd.LoadInt64x2Slice([]int64{6, 7})
+       z := x.ExportTestConcatSelectedConstant(0b10, y)
        z.StoreSlice(a)
        test_helpers.CheckSlices[int64](t, a, []int64{4, 7})
 }
 
 func TestConcatSelectedConstantGrouped64(t *testing.T) {
        a := make([]float64, 4)
-       x := LoadFloat64x4Slice([]float64{4, 5, 8, 9})
-       y := LoadFloat64x4Slice([]float64{6, 7, 10, 11})
-       z := x.concatSelectedConstantGrouped(0b_11_10, y)
+       x := simd.LoadFloat64x4Slice([]float64{4, 5, 8, 9})
+       y := simd.LoadFloat64x4Slice([]float64{6, 7, 10, 11})
+       z := x.ExportTestConcatSelectedConstantGrouped(0b_11_10, y)
        z.StoreSlice(a)
        test_helpers.CheckSlices[float64](t, a, []float64{4, 7, 9, 11})
 }
 
 func TestConcatSelectedConstant32(t *testing.T) {
        a := make([]float32, 4)
-       x := LoadFloat32x4Slice([]float32{4, 5, 8, 9})
-       y := LoadFloat32x4Slice([]float32{6, 7, 10, 11})
-       z := x.concatSelectedConstant(0b_11_01_10_00, y)
+       x := simd.LoadFloat32x4Slice([]float32{4, 5, 8, 9})
+       y := simd.LoadFloat32x4Slice([]float32{6, 7, 10, 11})
+       z := x.ExportTestConcatSelectedConstant(0b_11_01_10_00, y)
        z.StoreSlice(a)
        test_helpers.CheckSlices[float32](t, a, []float32{4, 8, 7, 11})
 }
 
 func TestConcatSelectedConstantGrouped32(t *testing.T) {
        a := make([]uint32, 8)
-       x := LoadUint32x8Slice([]uint32{0, 1, 2, 3, 8, 9, 10, 11})
-       y := LoadUint32x8Slice([]uint32{4, 5, 6, 7, 12, 13, 14, 15})
-       z := x.concatSelectedConstantGrouped(0b_11_01_00_10, y)
+       x := simd.LoadUint32x8Slice([]uint32{0, 1, 2, 3, 8, 9, 10, 11})
+       y := simd.LoadUint32x8Slice([]uint32{4, 5, 6, 7, 12, 13, 14, 15})
+       z := x.ExportTestConcatSelectedConstantGrouped(0b_11_01_00_10, y)
        z.StoreSlice(a)
        test_helpers.CheckSlices[uint32](t, a, []uint32{2, 0, 5, 7, 10, 8, 13, 15})
 }
 
 func TestTern(t *testing.T) {
-       if !X86.AVX512() {
+       if !simd.X86.AVX512() {
                t.Skip("This test needs AVX512")
        }
-       x := LoadInt32x8Slice([]int32{0, 0, 0, 0, 1, 1, 1, 1})
-       y := LoadInt32x8Slice([]int32{0, 0, 1, 1, 0, 0, 1, 1})
-       z := LoadInt32x8Slice([]int32{0, 1, 0, 1, 0, 1, 0, 1})
+       x := simd.LoadInt32x8Slice([]int32{0, 0, 0, 0, 1, 1, 1, 1})
+       y := simd.LoadInt32x8Slice([]int32{0, 0, 1, 1, 0, 0, 1, 1})
+       z := simd.LoadInt32x8Slice([]int32{0, 1, 0, 1, 0, 1, 0, 1})
 
-       foo := func(w Int32x8, k uint8) {
+       foo := func(w simd.Int32x8, k uint8) {
                a := make([]int32, 8)
                w.StoreSlice(a)
                t.Logf("For k=%0b, w=%v", k, a)
@@ -67,9 +68,9 @@ func TestTern(t *testing.T) {
                }
        }
 
-       foo(x.tern(0b1111_0000, y, z), 0b1111_0000)
-       foo(x.tern(0b1100_1100, y, z), 0b1100_1100)
-       foo(x.tern(0b1010_1010, y, z), 0b1010_1010)
+       foo(x.ExportTestTern(0b1111_0000, y, z), 0b1111_0000)
+       foo(x.ExportTestTern(0b1100_1100, y, z), 0b1100_1100)
+       foo(x.ExportTestTern(0b1010_1010, y, z), 0b1010_1010)
 }
 
 func TestSelect2x4x32(t *testing.T) {
@@ -77,8 +78,8 @@ func TestSelect2x4x32(t *testing.T) {
                for b := range uint8(8) {
                        for c := range uint8(8) {
                                for d := range uint8(8) {
-                                       x := LoadInt32x4Slice([]int32{0, 1, 2, 3})
-                                       y := LoadInt32x4Slice([]int32{4, 5, 6, 7})
+                                       x := simd.LoadInt32x4Slice([]int32{0, 1, 2, 3})
+                                       y := simd.LoadInt32x4Slice([]int32{4, 5, 6, 7})
                                        z := select2x4x32(x, a, b, c, d, y)
                                        w := make([]int32, 4, 4)
                                        z.StoreSlice(w)
@@ -97,8 +98,8 @@ func TestSelect2x8x32Grouped(t *testing.T) {
                for b := range uint8(8) {
                        for c := range uint8(8) {
                                for d := range uint8(8) {
-                                       x := LoadInt32x8Slice([]int32{0, 1, 2, 3, 10, 11, 12, 13})
-                                       y := LoadInt32x8Slice([]int32{4, 5, 6, 7, 14, 15, 16, 17})
+                                       x := simd.LoadInt32x8Slice([]int32{0, 1, 2, 3, 10, 11, 12, 13})
+                                       y := simd.LoadInt32x8Slice([]int32{4, 5, 6, 7, 14, 15, 16, 17})
                                        z := select2x8x32Grouped(x, a, b, c, d, y)
                                        w := make([]int32, 8, 8)
                                        z.StoreSlice(w)
@@ -117,60 +118,60 @@ func TestSelect2x8x32Grouped(t *testing.T) {
 // select2x4x32 returns a selection of 4 elements in x and y, numbered
 // 0-7, where 0-3 are the four elements of x and 4-7 are the four elements
 // of y.
-func select2x4x32(x Int32x4, a, b, c, d uint8, y Int32x4) Int32x4 {
+func select2x4x32(x simd.Int32x4, a, b, c, d uint8, y simd.Int32x4) simd.Int32x4 {
        pattern := a>>2 + (b&4)>>1 + (c & 4) + (d&4)<<1
 
        a, b, c, d = a&3, b&3, c&3, d&3
 
        switch pattern {
-       case _LLLL:
-               return x.concatSelectedConstant(cscimm4(a, b, c, d), x)
-       case _HHHH:
-               return y.concatSelectedConstant(cscimm4(a, b, c, d), y)
-       case _LLHH:
-               return x.concatSelectedConstant(cscimm4(a, b, c, d), y)
-       case _HHLL:
-               return y.concatSelectedConstant(cscimm4(a, b, c, d), x)
+       case simd.LLLL:
+               return x.ExportTestConcatSelectedConstant(simd.ExportTestCscImm4(a, b, c, d), x)
+       case simd.HHHH:
+               return y.ExportTestConcatSelectedConstant(simd.ExportTestCscImm4(a, b, c, d), y)
+       case simd.LLHH:
+               return x.ExportTestConcatSelectedConstant(simd.ExportTestCscImm4(a, b, c, d), y)
+       case simd.HHLL:
+               return y.ExportTestConcatSelectedConstant(simd.ExportTestCscImm4(a, b, c, d), x)
 
-       case _HLLL:
-               z := y.concatSelectedConstant(cscimm4(a, a, b, b), x)
-               return z.concatSelectedConstant(cscimm4(0, 2, c, d), x)
-       case _LHLL:
-               z := x.concatSelectedConstant(cscimm4(a, a, b, b), y)
-               return z.concatSelectedConstant(cscimm4(0, 2, c, d), x)
+       case simd.HLLL:
+               z := y.ExportTestConcatSelectedConstant(simd.ExportTestCscImm4(a, a, b, b), x)
+               return z.ExportTestConcatSelectedConstant(simd.ExportTestCscImm4(0, 2, c, d), x)
+       case simd.LHLL:
+               z := x.ExportTestConcatSelectedConstant(simd.ExportTestCscImm4(a, a, b, b), y)
+               return z.ExportTestConcatSelectedConstant(simd.ExportTestCscImm4(0, 2, c, d), x)
 
-       case _HLHH:
-               z := y.concatSelectedConstant(cscimm4(a, a, b, b), x)
-               return z.concatSelectedConstant(cscimm4(0, 2, c, d), y)
-       case _LHHH:
-               z := x.concatSelectedConstant(cscimm4(a, a, b, b), y)
-               return z.concatSelectedConstant(cscimm4(0, 2, c, d), y)
+       case simd.HLHH:
+               z := y.ExportTestConcatSelectedConstant(simd.ExportTestCscImm4(a, a, b, b), x)
+               return z.ExportTestConcatSelectedConstant(simd.ExportTestCscImm4(0, 2, c, d), y)
+       case simd.LHHH:
+               z := x.ExportTestConcatSelectedConstant(simd.ExportTestCscImm4(a, a, b, b), y)
+               return z.ExportTestConcatSelectedConstant(simd.ExportTestCscImm4(0, 2, c, d), y)
 
-       case _LLLH:
-               z := x.concatSelectedConstant(cscimm4(c, c, d, d), y)
-               return x.concatSelectedConstant(cscimm4(a, b, 0, 2), z)
-       case _LLHL:
-               z := y.concatSelectedConstant(cscimm4(c, c, d, d), x)
-               return x.concatSelectedConstant(cscimm4(a, b, 0, 2), z)
-       case _HHLH:
-               z := x.concatSelectedConstant(cscimm4(c, c, d, d), y)
-               return y.concatSelectedConstant(cscimm4(a, b, 0, 2), z)
-       case _HHHL:
-               z := y.concatSelectedConstant(cscimm4(c, c, d, d), x)
-               return y.concatSelectedConstant(cscimm4(a, b, 0, 2), z)
+       case simd.LLLH:
+               z := x.ExportTestConcatSelectedConstant(simd.ExportTestCscImm4(c, c, d, d), y)
+               return x.ExportTestConcatSelectedConstant(simd.ExportTestCscImm4(a, b, 0, 2), z)
+       case simd.LLHL:
+               z := y.ExportTestConcatSelectedConstant(simd.ExportTestCscImm4(c, c, d, d), x)
+               return x.ExportTestConcatSelectedConstant(simd.ExportTestCscImm4(a, b, 0, 2), z)
+       case simd.HHLH:
+               z := x.ExportTestConcatSelectedConstant(simd.ExportTestCscImm4(c, c, d, d), y)
+               return y.ExportTestConcatSelectedConstant(simd.ExportTestCscImm4(a, b, 0, 2), z)
+       case simd.HHHL:
+               z := y.ExportTestConcatSelectedConstant(simd.ExportTestCscImm4(c, c, d, d), x)
+               return y.ExportTestConcatSelectedConstant(simd.ExportTestCscImm4(a, b, 0, 2), z)
 
-       case _LHLH:
-               z := x.concatSelectedConstant(cscimm4(a, c, b, d), y)
-               return z.concatSelectedConstant(0b11_01_10_00 /* =cscimm4(0, 2, 1, 3) */, z)
-       case _HLHL:
-               z := x.concatSelectedConstant(cscimm4(b, d, a, c), y)
-               return z.concatSelectedConstant(0b01_11_00_10 /* =cscimm4(2, 0, 3, 1) */, z)
-       case _HLLH:
-               z := x.concatSelectedConstant(cscimm4(b, c, a, d), y)
-               return z.concatSelectedConstant(0b11_01_00_10 /* =cscimm4(2, 0, 1, 3) */, z)
-       case _LHHL:
-               z := x.concatSelectedConstant(cscimm4(a, d, b, c), y)
-               return z.concatSelectedConstant(0b01_11_10_00 /* =cscimm4(0, 2, 3, 1) */, z)
+       case simd.LHLH:
+               z := x.ExportTestConcatSelectedConstant(simd.ExportTestCscImm4(a, c, b, d), y)
+               return z.ExportTestConcatSelectedConstant(0b11_01_10_00 /* =simd.ExportTestCscImm4(0, 2, 1, 3) */, z)
+       case simd.HLHL:
+               z := x.ExportTestConcatSelectedConstant(simd.ExportTestCscImm4(b, d, a, c), y)
+               return z.ExportTestConcatSelectedConstant(0b01_11_00_10 /* =simd.ExportTestCscImm4(2, 0, 3, 1) */, z)
+       case simd.HLLH:
+               z := x.ExportTestConcatSelectedConstant(simd.ExportTestCscImm4(b, c, a, d), y)
+               return z.ExportTestConcatSelectedConstant(0b11_01_00_10 /* =simd.ExportTestCscImm4(2, 0, 1, 3) */, z)
+       case simd.LHHL:
+               z := x.ExportTestConcatSelectedConstant(simd.ExportTestCscImm4(a, d, b, c), y)
+               return z.ExportTestConcatSelectedConstant(0b01_11_10_00 /* =simd.ExportTestCscImm4(0, 2, 3, 1) */, z)
        }
        panic("missing case, switch should be exhaustive")
 }
@@ -179,79 +180,79 @@ func select2x4x32(x Int32x4, a, b, c, d uint8, y Int32x4) Int32x4 {
 // numbered 0-7, where 0-3 are the four elements of x's two groups (lower and
 // upper 128 bits) and 4-7 are the four elements of y's two groups.
 
-func select2x8x32Grouped(x Int32x8, a, b, c, d uint8, y Int32x8) Int32x8 {
-       // selections as being expressible in the concatSelectedConstant pattern,
+func select2x8x32Grouped(x simd.Int32x8, a, b, c, d uint8, y simd.Int32x8) simd.Int32x8 {
+       // selections as being expressible in the ExportTestConcatSelectedConstant pattern,
        // or not. Classification is by H and L, where H is a selection from 4-7
        // and L is a selection from 0-3.
-       // _LLHH -> CSC(x,y, a, b, c&3, d&3)
-       // _HHLL -> CSC(y,x, a&3, b&3, c, d)
-       // _LLLL -> CSC(x,x, a, b, c, d)
-       // _HHHH -> CSC(y,y, a&3, b&3, c&3, d&3)
+       // simd.LLHH -> CSC(x,y, a, b, c&3, d&3)
+       // simd.HHLL -> CSC(y,x, a&3, b&3, c, d)
+       // simd.LLLL -> CSC(x,x, a, b, c, d)
+       // simd.HHHH -> CSC(y,y, a&3, b&3, c&3, d&3)
 
-       // _LLLH -> z = CSC(x, y, c, c, d&3, d&3); CSC(x, z, a, b, 0, 2)
-       // _LLHL -> z = CSC(x, y, c&3, c&3, d, d); CSC(x, z, a, b, 0, 2)
-       // _HHLH -> z = CSC(x, y, c, c, d&3, d&3); CSC(y, z, a&3, b&3, 0, 2)
-       // _HHHL -> z = CSC(x, y, c&3, c&3, d, d); CSC(y, z, a&3, b&3, 0, 2)
+       // simd.LLLH -> z = CSC(x, y, c, c, d&3, d&3); CSC(x, z, a, b, 0, 2)
+       // simd.LLHL -> z = CSC(x, y, c&3, c&3, d, d); CSC(x, z, a, b, 0, 2)
+       // simd.HHLH -> z = CSC(x, y, c, c, d&3, d&3); CSC(y, z, a&3, b&3, 0, 2)
+       // simd.HHHL -> z = CSC(x, y, c&3, c&3, d, d); CSC(y, z, a&3, b&3, 0, 2)
 
-       // _LHLL -> z = CSC(x, y, a, a, b&3, b&3); CSC(z, x, 0, 2, c, d)
+       // simd.LHLL -> z = CSC(x, y, a, a, b&3, b&3); CSC(z, x, 0, 2, c, d)
        // etc
 
-       // _LHLH -> z = CSC(x, y, a, c, b&3, d&3); CSC(z, z, 0, 2, 1, 3)
-       // _HLHL -> z = CSC(x, y, b, d, a&3, c&3); CSC(z, z, 2, 0, 3, 1)
+       // simd.LHLH -> z = CSC(x, y, a, c, b&3, d&3); CSC(z, z, 0, 2, 1, 3)
+       // simd.HLHL -> z = CSC(x, y, b, d, a&3, c&3); CSC(z, z, 2, 0, 3, 1)
 
        pattern := a>>2 + (b&4)>>1 + (c & 4) + (d&4)<<1
 
        a, b, c, d = a&3, b&3, c&3, d&3
 
        switch pattern {
-       case _LLLL:
-               return x.concatSelectedConstantGrouped(cscimm4(a, b, c, d), x)
-       case _HHHH:
-               return y.concatSelectedConstantGrouped(cscimm4(a, b, c, d), y)
-       case _LLHH:
-               return x.concatSelectedConstantGrouped(cscimm4(a, b, c, d), y)
-       case _HHLL:
-               return y.concatSelectedConstantGrouped(cscimm4(a, b, c, d), x)
+       case simd.LLLL:
+               return x.ExportTestConcatSelectedConstantGrouped(simd.ExportTestCscImm4(a, b, c, d), x)
+       case simd.HHHH:
+               return y.ExportTestConcatSelectedConstantGrouped(simd.ExportTestCscImm4(a, b, c, d), y)
+       case simd.LLHH:
+               return x.ExportTestConcatSelectedConstantGrouped(simd.ExportTestCscImm4(a, b, c, d), y)
+       case simd.HHLL:
+               return y.ExportTestConcatSelectedConstantGrouped(simd.ExportTestCscImm4(a, b, c, d), x)
 
-       case _HLLL:
-               z := y.concatSelectedConstantGrouped(cscimm4(a, a, b, b), x)
-               return z.concatSelectedConstantGrouped(cscimm4(0, 2, c, d), x)
-       case _LHLL:
-               z := x.concatSelectedConstantGrouped(cscimm4(a, a, b, b), y)
-               return z.concatSelectedConstantGrouped(cscimm4(0, 2, c, d), x)
+       case simd.HLLL:
+               z := y.ExportTestConcatSelectedConstantGrouped(simd.ExportTestCscImm4(a, a, b, b), x)
+               return z.ExportTestConcatSelectedConstantGrouped(simd.ExportTestCscImm4(0, 2, c, d), x)
+       case simd.LHLL:
+               z := x.ExportTestConcatSelectedConstantGrouped(simd.ExportTestCscImm4(a, a, b, b), y)
+               return z.ExportTestConcatSelectedConstantGrouped(simd.ExportTestCscImm4(0, 2, c, d), x)
 
-       case _HLHH:
-               z := y.concatSelectedConstantGrouped(cscimm4(a, a, b, b), x)
-               return z.concatSelectedConstantGrouped(cscimm4(0, 2, c, d), y)
-       case _LHHH:
-               z := x.concatSelectedConstantGrouped(cscimm4(a, a, b, b), y)
-               return z.concatSelectedConstantGrouped(cscimm4(0, 2, c, d), y)
+       case simd.HLHH:
+               z := y.ExportTestConcatSelectedConstantGrouped(simd.ExportTestCscImm4(a, a, b, b), x)
+               return z.ExportTestConcatSelectedConstantGrouped(simd.ExportTestCscImm4(0, 2, c, d), y)
+       case simd.LHHH:
+               z := x.ExportTestConcatSelectedConstantGrouped(simd.ExportTestCscImm4(a, a, b, b), y)
+               return z.ExportTestConcatSelectedConstantGrouped(simd.ExportTestCscImm4(0, 2, c, d), y)
 
-       case _LLLH:
-               z := x.concatSelectedConstantGrouped(cscimm4(c, c, d, d), y)
-               return x.concatSelectedConstantGrouped(cscimm4(a, b, 0, 2), z)
-       case _LLHL:
-               z := y.concatSelectedConstantGrouped(cscimm4(c, c, d, d), x)
-               return x.concatSelectedConstantGrouped(cscimm4(a, b, 0, 2), z)
-       case _HHLH:
-               z := x.concatSelectedConstantGrouped(cscimm4(c, c, d, d), y)
-               return y.concatSelectedConstantGrouped(cscimm4(a, b, 0, 2), z)
-       case _HHHL:
-               z := y.concatSelectedConstantGrouped(cscimm4(c, c, d, d), x)
-               return y.concatSelectedConstantGrouped(cscimm4(a, b, 0, 2), z)
+       case simd.LLLH:
+               z := x.ExportTestConcatSelectedConstantGrouped(simd.ExportTestCscImm4(c, c, d, d), y)
+               return x.ExportTestConcatSelectedConstantGrouped(simd.ExportTestCscImm4(a, b, 0, 2), z)
+       case simd.LLHL:
+               z := y.ExportTestConcatSelectedConstantGrouped(simd.ExportTestCscImm4(c, c, d, d), x)
+               return x.ExportTestConcatSelectedConstantGrouped(simd.ExportTestCscImm4(a, b, 0, 2), z)
+       case simd.HHLH:
+               z := x.ExportTestConcatSelectedConstantGrouped(simd.ExportTestCscImm4(c, c, d, d), y)
+               return y.ExportTestConcatSelectedConstantGrouped(simd.ExportTestCscImm4(a, b, 0, 2), z)
+       case simd.HHHL:
+               z := y.ExportTestConcatSelectedConstantGrouped(simd.ExportTestCscImm4(c, c, d, d), x)
+               return y.ExportTestConcatSelectedConstantGrouped(simd.ExportTestCscImm4(a, b, 0, 2), z)
 
-       case _LHLH:
-               z := x.concatSelectedConstantGrouped(cscimm4(a, c, b, d), y)
-               return z.concatSelectedConstantGrouped(0b11_01_10_00 /* =cscimm4(0, 2, 1, 3) */, z)
-       case _HLHL:
-               z := x.concatSelectedConstantGrouped(cscimm4(b, d, a, c), y)
-               return z.concatSelectedConstantGrouped(0b01_11_00_10 /* =cscimm4(2, 0, 3, 1) */, z)
-       case _HLLH:
-               z := x.concatSelectedConstantGrouped(cscimm4(b, c, a, d), y)
-               return z.concatSelectedConstantGrouped(0b11_01_00_10 /* =cscimm4(2, 0, 1, 3) */, z)
-       case _LHHL:
-               z := x.concatSelectedConstantGrouped(cscimm4(a, d, b, c), y)
-               return z.concatSelectedConstantGrouped(0b01_11_10_00 /* =cscimm4(0, 2, 3, 1) */, z)
+       case simd.LHLH:
+               z := x.ExportTestConcatSelectedConstantGrouped(simd.ExportTestCscImm4(a, c, b, d), y)
+               return z.ExportTestConcatSelectedConstantGrouped(0b11_01_10_00 /* =simd.ExportTestCscImm4(0, 2, 1, 3) */, z)
+       case simd.HLHL:
+               z := x.ExportTestConcatSelectedConstantGrouped(simd.ExportTestCscImm4(b, d, a, c), y)
+               return z.ExportTestConcatSelectedConstantGrouped(0b01_11_00_10 /* =simd.ExportTestCscImm4(2, 0, 3, 1) */, z)
+       case simd.HLLH:
+               z := x.ExportTestConcatSelectedConstantGrouped(simd.ExportTestCscImm4(b, c, a, d), y)
+               return z.ExportTestConcatSelectedConstantGrouped(0b11_01_00_10 /* =simd.ExportTestCscImm4(2, 0, 1, 3) */, z)
+       case simd.LHHL:
+               z := x.ExportTestConcatSelectedConstantGrouped(simd.ExportTestCscImm4(a, d, b, c), y)
+               return z.ExportTestConcatSelectedConstantGrouped(0b01_11_10_00 /* =simd.ExportTestCscImm4(0, 2, 3, 1) */, z)
        }
        panic("missing case, switch should be exhaustive")
 }