// PATH to find the executable.
func lookPath(s *State, command string) (string, error) {
	var strEqual func(string, string) bool
	if runtime.GOOS == "windows" || runtime.GOOS == "darwin" {
		// Using GOOS as a proxy for case-insensitive file system.
		// TODO(bcmills): Remove this assumption.
		strEqual = strings.EqualFold
	} else {
		strEqual = func(a, b string) bool { return a == b }
	}

	var pathExt []string
	var searchExt bool

	{"runtime.memequal32", 1},
	{"runtime.memequal64", 1},
	{"runtime.memequal128", 1},
	{"runtime.f32equal", 1},
	{"runtime.f64equal", 1},
	{"runtime.c64equal", 1},
	{"runtime.c128equal", 1},
	{"runtime.strequal", 1},
	{"runtime.interequal", 1},
	{"runtime.nilinterequal", 1},
	{"runtime.memhash", 1},
	{"runtime.memhash0", 1},
	{"runtime.memhash8", 1},
	{"runtime.memhash16", 1},
	{"runtime.memhash32", 1},

func memequal128(x, y *any) bool
func f32equal(p, q unsafe.Pointer) bool
func f64equal(p, q unsafe.Pointer) bool
func c64equal(p, q unsafe.Pointer) bool
func c128equal(p, q unsafe.Pointer) bool
func strequal(p, q unsafe.Pointer) bool
func interequal(p, q unsafe.Pointer) bool
func nilinterequal(p, q unsafe.Pointer) bool

func memhash(x *any, h uintptr, size uintptr) uintptr
func memhash0(p unsafe.Pointer, h uintptr) uintptr

	{"memequal64", funcTag, 126},
	{"memequal128", funcTag, 126},
	{"f32equal", funcTag, 127},
	{"f64equal", funcTag, 127},
	{"c64equal", funcTag, 127},
	{"c128equal", funcTag, 127},
	{"strequal", funcTag, 127},
	{"interequal", funcTag, 127},
	{"nilinterequal", funcTag, 127},
	{"memhash", funcTag, 128},
	{"memhash0", funcTag, 129},
	{"memhash8", funcTag, 129},
	{"memhash16", funcTag, 129},

}
func c64equal(p, q unsafe.Pointer) bool {
	return *(*complex64)(p) == *(*complex64)(q)
}
func c128equal(p, q unsafe.Pointer) bool {
	return *(*complex128)(p) == *(*complex128)(q)
}
func strequal(p, q unsafe.Pointer) bool {
	return *(*string)(p) == *(*string)(q)
}
func interequal(p, q unsafe.Pointer) bool {
	x := *(*iface)(p)
	y := *(*iface)(q)
	return x.tab == y.tab && ifaceeq(x.tab, x.data, y.data)
}

		{Checkpoint, 0, 0},
		{SetEqual, 2, 100},
		{Ordered, 1, 107},
		{Ordered, 100, 6},

		// SetEqual with new node
		{Undo, 0, 0},
		{Checkpoint, 0, 0},
		{SetEqual, 2, 400},
		{SetEqual, 401, 2},
		{Equal, 400, 401},
		{Ordered, 1, 400},
		{Ordered, 400, 6},
		{Ordered, 1, 401},
		{Ordered, 401, 6},
		{Ordered_Fail, 2, 401},

		// SetEqual unseen nodes and then connect

}

func moveArchLowering16(b []byte, x *[16]byte) {
	_ = b[16]
	// amd64:-".*memmove"
	copy(b, x[:])
}

// Check that no branches are generated when the pointers are [not] equal.

func ptrEqual() {
	// amd64:-"JEQ",-"JNE"
	// ppc64x:-"BEQ",-"BNE"
	// s390x:-"BEQ",-"BNE"
	copy(x[:], x[:])
}

func ptrOneOffset() {
	// amd64:-"JEQ",-"JNE"
	// ppc64x:-"BEQ",-"BNE"
	// s390x:-"BEQ",-"BNE"

		panic("should not call SetOrder with n1==n2")
	}
	return po.setOrder(n1, n2, false)
}

// SetEqual records that n1==n2. Returns false if this is a contradiction
// (that is, if it is already recorded that n1<n2 or n2<n1).
// Complexity is O(1) if n2 was never seen before, or O(n) otherwise.
func (po *poset) SetEqual(n1, n2 *Value) bool {
	if debugPoset {
		defer po.CheckIntegrity()
	}
	if n1.ID == n2.ID {

	github.com/go-critic/go-critic v0.11.1 // indirect
	github.com/go-toolsmith/astcast v1.1.0 // indirect
	github.com/go-toolsmith/astcopy v1.1.0 // indirect
	github.com/go-toolsmith/astequal v1.2.0 // indirect
	github.com/go-toolsmith/astfmt v1.1.0 // indirect
	github.com/go-toolsmith/astp v1.1.0 // indirect
	github.com/go-toolsmith/strparse v1.1.0 // indirect
	github.com/go-toolsmith/typep v1.1.0 // indirect

github.com/go-toolsmith/astequal v1.0.3/go.mod h1:9Ai4UglvtR+4up+bAD4+hCj7iTo4m/OXVTSLnCyTAx4=
github.com/go-toolsmith/astequal v1.1.0/go.mod h1:sedf7VIdCL22LD8qIvv7Nn9MuWJruQA/ysswh64lffQ=
github.com/go-toolsmith/astequal v1.2.0 h1:3Fs3CYZ1k9Vo4FzFhwwewC3CHISHDnVUPC4x0bI2+Cw=
github.com/go-toolsmith/astequal v1.2.0/go.mod h1:c8NZ3+kSFtFY/8lPso4v8LuJjdJiUFVnSuU3s0qrrDY=