// We disable jump tables if we use less than a minimum fraction of the entries.
		// i.e. for switch x {case 0: case 1000: case 2000:} we don't want to use a jump table.
		return false
	}
	jt := ir.NewJumpTableStmt(base.Pos, s.exprname)
	for _, c := range cc {
		jmp := c.jmp.(*ir.BranchStmt)
		if jmp.Op() != ir.OGOTO || jmp.Label == nil {
			panic("bad switch case body")
		}