The shift operators shift the left operand by the shift count specified by the
right operand, which must be non-negative. If the shift count is negative at run time,
a <a href="#Run_time_panics">run-time panic</a> occurs.
The shift operators implement arithmetic shifts if the left operand is a signed
integer and logical shifts if it is an unsigned integer.
There is no upper limit on the shift count. Shifts behave

	if elem.Alignment() == 1 && (size == 0 || size == 1 || count == nil) {
		return
	}
	if count == nil {
		count = s.constInt(types.Types[types.TUINTPTR], 1)
	}
	if count.Type.Size() != s.config.PtrSize {
		s.Fatalf("expected count fit to a uintptr size, have: %d, want: %d", count.Type.Size(), s.config.PtrSize)
	}
	var rtype *ssa.Value
	if rtypeExpr != nil {

pkg syscall (darwin-arm64), type Msghdr struct, Pad_cgo_1 [4]uint8
pkg syscall (darwin-arm64), type Radvisory_t struct
pkg syscall (darwin-arm64), type Radvisory_t struct, Count int32
pkg syscall (darwin-arm64), type Radvisory_t struct, Offset int64
pkg syscall (darwin-arm64), type Radvisory_t struct, Pad_cgo_0 [4]uint8
pkg syscall (darwin-arm64), type RawSockaddr struct, Data [14]int8