Valu("wb1", OpStore, types.TypeMem, 0, ptrType, "addr1", "v", "start"), // wb1 and wb2 are out of order
			Goto("exit")),
		Bloc("exit",
			Exit("wb2")))

	CheckFunc(fun.f)
	writebarrier(fun.f)
	CheckFunc(fun.f)
}

func TestWriteBarrierPhi(t *testing.T) {
	// Make sure writebarrier phase works for single-block loop, where
	// a Phi op takes the store in the same block as argument.

			Eq("a", "if", "exit"),
		),
		Bloc("if",
			Eq("b", "plain", "exit"),
		),
		Bloc("plain",
			Goto("exit"),
		),
		Bloc("exit",
			Exit("mem"),
		),
	)
	flagalloc(f.f)
	regalloc(f.f)
	checkFunc(f.f)
}

// Test to make sure G register is never reloaded from spill (spill of G is okay)
// See #25504
func TestNoGetgLoadReg(t *testing.T) {
	/*
		Original:
		func fff3(i int) *g {
			gee := getg()

	return blocs
}

// sink for benchmark
var domBenchRes []*Block

func benchmarkDominators(b *testing.B, size int, bg blockGen) {
	c := testConfig(b)
	fun := c.Fun("entry", bg(size)...)

	CheckFunc(fun.f)
	b.SetBytes(int64(size))
	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		domBenchRes = dominators(fun.f)
	}
}

type domFunc func(f *Func) []*Block

			Valu("rstore", OpStore, types.TypeMem, 0, c.config.Types.Int64, "raddr", "r10", "raddrdef"),
			Goto("exit")),
		Bloc("exit",
			Exit("rstore")))

	CheckFunc(fun.f)
	cse(fun.f)
	deadcode(fun.f)
	CheckFunc(fun.f)

	s1Cnt := 2
	// r1 == r2 == r3, needs to remove two of this set
	s2Cnt := 1
	// r4 == r5, needs to remove one of these
	for k, v := range fun.values {
		if v.Op == OpInvalid {

			Valu("t29", OpIsInBounds, c.config.Types.Int64, 0, nil, "v2", "v1"),
			Valu("t30", OpIsSliceInBounds, c.config.Types.Int64, 0, nil, "v2", "v1"),
			Goto("b2")),
		Bloc("b2",
			Exit("mem")))
	sccp(fun.f)
	CheckFunc(fun.f)
	for name, value := range fun.values {
		if strings.HasPrefix(name, "t") {
			if !isConst(value) {
				t.Errorf("Must be constant: %v", value.LongString())
			}
		}
	}
}

		Bloc("b5",
			Valu("phi3", OpPhi, c.config.Types.Bool, 0, nil, "phi2", "cmp3"),
			If("phi3", "b6", "b7")),
		Bloc("b6",
			Exit("mem")),
		Bloc("b7",
			Exit("mem")))

	CheckFunc(fun.f)
	shortcircuit(fun.f)
	CheckFunc(fun.f)

	for _, b := range fun.f.Blocks {
		for _, v := range b.Values {
			if v.Op == OpPhi {
				t.Errorf("phi %s remains", v)
			}
		}
	}

	defer b.Flush()

	fmt.Fprintf(b, "%s\n", prolog)

	for logBits := uint(3); logBits <= 6; logBits++ {
		typ := fmt.Sprintf("int%d", 1<<logBits)
		fmt.Fprint(b, strings.Replace(checkFunc, "XXX", typ, -1))
		fmt.Fprint(b, strings.Replace(checkFunc, "XXX", "u"+typ, -1))
		gentest(b, 1<<logBits, mode&1 != 0, mode&2 != 0)
	}
}

const prolog = `

package main

import (
	"fmt"
	"os"
)

var (

				goldenNameV4 = goldenName
				goldenNameV6 = goldenName
			} else {
				goldenNameV4 = tt.name + "-v4"
				goldenNameV6 = tt.name + "-v6"
			}
			checkFunc(goldenNameV4, iptables.BuildV4(), iptables.BuildV4Restore(), tt.expectV4)
			checkFunc(goldenNameV6, iptables.BuildV6(), iptables.BuildV6Restore(), tt.expectV6)
		})
	}

		{name: "notUnique to unique", from: &UniqueStruct1{}, to: &UniqueStruct3{}, checkFunc: checkUnique},
		{name: "notUnique to uniqueIndex", from: &UniqueStruct1{}, to: &UniqueStruct5{}, checkFunc: checkUniqueIndex},
		{name: "notUnique to uniqueAndUniqueIndex", from: &UniqueStruct1{}, to: &UniqueStruct8{}, checkFunc: checkMyIndex},

	"cmd/compile/internal/types"
	"cmd/internal/obj"
	"cmd/internal/obj/arm64"
	"cmd/internal/obj/s390x"
	"cmd/internal/obj/x86"
	"cmd/internal/src"
	"cmd/internal/sys"
)

var CheckFunc = checkFunc
var Opt = opt
var Deadcode = deadcode
var Copyelim = copyelim

var testCtxts = map[string]*obj.Link{
	"amd64": obj.Linknew(&x86.Linkamd64),
	"s390x": obj.Linknew(&s390x.Links390x),