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   1 Primary goal: good coverage of the backend code generators.  The
   2 following list was derived from the token list in SDCC.lex
   3
   4 Follows is a list of tokens and the test case that covers them.  If no
   5 case is listed then the token is not yet covered.  Special cases are
   6 listed under the token.  If the token is listed as covered then the
   7 special cases are also covered.
   8
   9 The cases generally assume that on stack local variables and
  10 parameters are accessed using the same methods and hence doesn't test
  11 stack based parameters.
  12
  13 Todo
  14 Operations:
  15         Shifts:
  16                 Common cases:
  17                         For byte multiples (8, 16...)
  18                         For more than the word size
  19                         For negative shifts
  20                         For shift of 1
  21                 >>=
  22                 <<=
  23                 >>
  24                 <<
  25
  26         Comparison:
  27                 Common cases:
  28                         Around zero
  29                         Constants on either side (reversal)
  30                 <=
  31                 >=
  32                 ==
  33                 !=
  34                 <
  35                 >
  36
  37         Basic arithmetic:
  38                 Common cases:
  39                         For small constants (<3)
  40                 ++
  41                 --
  42                 +=
  43                 -=
  44                 -
  45                 +
  46
  47         Mul/Div/Mod arithmetic:
  48                 Common cases:
  49                         For powers of 2
  50                 *=
  51                 /=
  52                 %=
  53                 *
  54                 /
  55                 %
  56
  57         Bitwise operations:
  58                 &=
  59                 ^=
  60                 |=
  61                 &
  62                 ~
  63                 ^
  64                 |
  65
  66         Logical operations:
  67                 &&
  68                 ||
  69                 !
  70
  71         Misc:
  72                 ->
  73                         Test that members are not cached across
  74 function calls
  75                 =
  76                 .
  77                 ?
  78                 casts
  79                         Test sign extension
  80                 arrays
  81                         Test a[a[const]]
  82                 pointers
  83
  84         Language features (untestable):
  85                 ;
  86                 {
  87                 }
  88                 ,
  89                 :
  90                 (
  91                 )
  92                 [
  93                 ]
  94
  95 Keywords:
  96         Specificers:
  97                 const
  98                 register
  99                 signed
 100                 static
 101                 unsigned
 102                 volatile
 103
 104         Conditional:
 105                 break
 106                 case
 107                 default
 108                 else
 109                 goto
 110                 if
 111                 switch
 112
 113         Types:
 114                 char
 115                 double
 116                 float
 117                 int
 118                 long
 119                 short
 120                 void
 121
 122         Iterative:
 123                 continue
 124                 do
 125                 for
 126                 while
 127
 128         Language features:
 129                 enum
 130                 extern
 131                 sizeof
 132                 struct
 133                 typedef
 134                 union
 135
 136         Misc:
 137                 return
 138
 139         Unknown:
 140                 auto
 141                 interrupt
 142
 143 Optional keywords:
 144         banked
 145         bit
 146         flash
 147         code
 148         critical
 149         near
 150         data
 151         eeprom
 152         idata
 153         nonbanked
 154         pdata
 155         reentrant
 156         sbit
 157         sfr
 158         using
 159         sram
 160         xdata
 161         far
 162         _code
 163         _flash
 164         _eeprom
 165         _generic
 166         _idata
 167         _data
 168         _near
 169         _pdata
 170         _sram
 171         _xdata
 172
 173 Language features:
 174         va args (...)
 175
 176 Optional:
 177         Constants:
 178                 Hex, dec, oct
 179                 Character constants     'x'
 180                 Specials                '\n', '\0', ...