gcc/testsuite/gcc.dg/tree-ssa/pr77445-2.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdisable-tree-evrp -fdump-tree-thread-details-blocks-stats -fdump-tree-threadfull1-blocks-stats -fdump-tree-threadfull2-blocks-stats" } */
   3 typedef enum STATES {
   4         START=0,
   5         INVALID,
   6         S1,
   7         S2,
   8         INT,
   9         FLOAT ,
  10         EXPONENT,
  11         SCIENTIFIC,
  12         NUM_STATES
  13 } state_e ;
  14
  15 typedef unsigned char u8;
  16 typedef unsigned int  u32;
  17
  18 static u8 is_digit(u8 c) {
  19         return (u8)((c>='0') & (c<='9')) ? 1 : 0;
  20 }
  21
  22 enum STATES FMS( u8 **in , u32 *transitions) {
  23         u8 *str = *in;
  24         u8 NEXT_SYMBOL;
  25         enum STATES state=START;
  26         for( ; *str && state != INVALID; str++ ) {
  27                 NEXT_SYMBOL = *str;
  28                 if (NEXT_SYMBOL==',') /* end of this input */ {
  29                         transitions[state]++;
  30                         str++;
  31                         break;
  32                 }
  33                 switch(state) {
  34                 case START:
  35                         if(is_digit(NEXT_SYMBOL)) {
  36                                 state = INT;
  37                         }
  38                         else if( NEXT_SYMBOL == '+' || NEXT_SYMBOL == '-' ) {
  39                                 state = S1;
  40                         }
  41                         else if( NEXT_SYMBOL == '.' ) {
  42                                 state = FLOAT ;
  43                         }
  44                         else {
  45                                 state = INVALID;
  46                         }
  47                         transitions[START]++;
  48                         break;
  49                 case S1:
  50                         if(is_digit(NEXT_SYMBOL)) {
  51                                 state = INT;
  52                                 transitions[S1]++;
  53                         }
  54                         else if( NEXT_SYMBOL == '.' ) {
  55                                 state = FLOAT ;
  56                                 transitions[S1]++;
  57                         }
  58                         else {
  59                                 state = INVALID;
  60                                 transitions[S1]++;
  61                         }
  62                         break;
  63                 case INT:
  64                         if( NEXT_SYMBOL == '.' ) {
  65                                 state = FLOAT ;
  66                                 transitions[INT]++;
  67                         }
  68                         else if(!is_digit(NEXT_SYMBOL)) {
  69                                 state = INVALID;
  70                                 transitions[INT]++;
  71                         }
  72                         break;
  73                 case FLOAT :
  74                         if( NEXT_SYMBOL == 'E' || NEXT_SYMBOL == 'e' ) {
  75                                 state = S2;
  76                                 transitions[FLOAT ]++;
  77                         }
  78                         else if(!is_digit(NEXT_SYMBOL)) {
  79                                 state = INVALID;
  80                                 transitions[FLOAT ]++;
  81                         }
  82                         break;
  83                 case S2:
  84                         if( NEXT_SYMBOL == '+' || NEXT_SYMBOL == '-' ) {
  85                                 state = EXPONENT;
  86                                 transitions[S2]++;
  87                         }
  88                         else {
  89                                 state = INVALID;
  90                                 transitions[S2]++;
  91                         }
  92                         break;
  93                 case EXPONENT:
  94                         if(is_digit(NEXT_SYMBOL)) {
  95                                 state = SCIENTIFIC;
  96                                 transitions[EXPONENT]++;
  97                         }
  98                         else {
  99                                 state = INVALID;
 100                                 transitions[EXPONENT]++;
 101                         }
 102                         break;
 103                 case SCIENTIFIC:
 104                         if(!is_digit(NEXT_SYMBOL)) {
 105                                 state = INVALID;
 106                         }
 107                         break;
 108                 default:
 109                         break;
 110                 }
 111         }
 112         if (state==INVALID)
 113                 transitions[INVALID]++;
 114
 115         *in = str;
 116         return state;
 117 }
 118
 119 /* The profile is not updated perfectly because it is inconsitent from
 120    profile estimation stage. But the number of inconsistencies should not
 121    increase much.
 122
 123    aarch64 has the highest CASE_VALUES_THRESHOLD in GCC.  It's high enough
 124    to change decisions in switch expansion which in turn can expose new
 125    jump threading opportunities.  Skip the later tests on aarch64.  */
 126 /* { dg-final { scan-tree-dump "Jumps threaded: \[7-9\]" "thread1" } } */
 127 /* { dg-final { scan-tree-dump-not "optimizing for size" "thread1" } } */
 128 /* { dg-final { scan-tree-dump-not "optimizing for size" "threadfull1" } } */
 129 /* { dg-final { scan-tree-dump-not "optimizing for size" "thread2" { target { ! aarch64*-*-* } } } } */
 130 /* { dg-final { scan-tree-dump-not "optimizing for size" "threadfull2" { target { ! aarch64*-*-* } } } } */