}

func panicmakeslicecap() {
	panic(errorString("makeslice: cap out of range"))
}

// makeslicecopy allocates a slice of "tolen" elements of type "et",
// then copies "fromlen" elements of type "et" into that new allocation from "from".
func makeslicecopy(et *_type, tolen int, fromlen int, from unsafe.Pointer) unsafe.Pointer {
	var tomem, copymem uintptr
	if uintptr(tolen) > uintptr(fromlen) {

	{"runtime.selectnbsend", 1},
	{"runtime.selectnbrecv", 1},
	{"runtime.selectsetpc", 1},
	{"runtime.selectgo", 1},
	{"runtime.block", 1},
	{"runtime.makeslice", 1},
	{"runtime.makeslice64", 1},
	{"runtime.makeslicecopy", 1},
	{"runtime.growslice", 1},
	{"runtime.unsafeslicecheckptr", 1},
	{"runtime.panicunsafeslicelen", 1},
	{"runtime.panicunsafeslicenilptr", 1},
	{"runtime.unsafestringcheckptr", 1},

		init.Append(walkExpr(typecheck.Stmt(ncopy), init))

		return s
	}
	// Replace make+copy with runtime.makeslicecopy.
	// instantiate makeslicecopy(typ *byte, tolen int, fromlen int, from unsafe.Pointer) unsafe.Pointer
	fn := typecheck.LookupRuntime("makeslicecopy")

func block()

func makeslice(typ *byte, len int, cap int) unsafe.Pointer
func makeslice64(typ *byte, len int64, cap int64) unsafe.Pointer
func makeslicecopy(typ *byte, tolen int, fromlen int, from unsafe.Pointer) unsafe.Pointer
func growslice(oldPtr *any, newLen, oldCap, num int, et *byte) (ary []any)
func unsafeslicecheckptr(typ *byte, ptr unsafe.Pointer, len int64)

	{"selectnbrecv", funcTag, 113},
	{"selectsetpc", funcTag, 114},
	{"selectgo", funcTag, 115},
	{"block", funcTag, 9},
	{"makeslice", funcTag, 116},
	{"makeslice64", funcTag, 117},
	{"makeslicecopy", funcTag, 118},
	{"growslice", funcTag, 120},
	{"unsafeslicecheckptr", funcTag, 121},
	{"panicunsafeslicelen", funcTag, 9},
	{"panicunsafeslicenilptr", funcTag, 9},
	{"unsafestringcheckptr", funcTag, 122},

		s1 := s.(string)
		s2, b := rawstring(len(s1))
		copy(b, s1)
		x = s2
	case abi.Slice:
		len := (*slice)(e.data).len
		et := (*slicetype)(unsafe.Pointer(t)).Elem
		sl := new(slice)
		*sl = slice{makeslicecopy(et, len, len, (*slice)(e.data).array), len, len}
		xe := efaceOf(&x)
		xe._type = t
		xe.data = unsafe.Pointer(sl)
	case abi.Pointer:
		et := (*ptrtype)(unsafe.Pointer(t)).Elem
		e2 := newobject(et)

		n.SetType(nil)
		return n
	}

	nn.SetType(t)
	return nn
}

// tcMakeSliceCopy typechecks an OMAKESLICECOPY node.
func tcMakeSliceCopy(n *ir.MakeExpr) ir.Node {
	// Errors here are Fatalf instead of Errorf because only the compiler
	// can construct an OMAKESLICECOPY node.
	// Components used in OMAKESCLICECOPY that are supplied by parsed source code
	// have already been typechecked in OMAKE and OCOPY earlier.

		n := n.(*ir.SliceHeaderExpr)
		return tcSliceHeader(n)

	case ir.OSTRINGHEADER:
		n := n.(*ir.StringHeaderExpr)
		return tcStringHeader(n)

	case ir.OMAKESLICECOPY:
		n := n.(*ir.MakeExpr)
		return tcMakeSliceCopy(n)

	case ir.OSLICE, ir.OSLICE3:
		n := n.(*ir.SliceExpr)
		return tcSlice(n)

	// call and call like
	case ir.OCALL:
		n := n.(*ir.CallExpr)
		return tcCall(n, top)

		orderMakeSliceCopy(s[i:])
		o.stmt(s[i])
	}
}

// orderMakeSliceCopy matches the pattern:
//
//	m = OMAKESLICE([]T, x); OCOPY(m, s)
//
// and rewrites it to:
//
//	m = OMAKESLICECOPY([]T, x, s); nil
func orderMakeSliceCopy(s []ir.Node) {
	if base.Flag.N != 0 || base.Flag.Cfg.Instrumenting {
		return
	}
	if len(s) < 2 || s[0] == nil || s[0].Op() != ir.OAS || s[1] == nil || s[1].Op() != ir.OCOPY {

			return true
		}

	// Only possible side effect is panic on invalid size.
	// TODO(rsc): Merge with previous case (probably breaks toolstash -cmp).
	case ir.OMAKESLICE, ir.OMAKESLICECOPY:
		return true
	}
	return false
}

// AnySideEffects reports whether n contains any operations that could have observable side effects.
func AnySideEffects(n ir.Node) bool {