dfa: use only one instance for most things

[michaellilltokiwa]

Hello World old/new

4 features 6 types and 1 source files included in fum file.
DFA pre iteration #1: --------------------------------------------------calls:0,values:2,envs:0
DFA pre iteration #2: --------------------------------------------------calls:822,values:914,envs:0
DFA pre iteration #3: --------------------------------------------------calls:823,values:915,envs:0
DFA pre iteration #4: --------------------------------------------------calls:823,values:915,envs:0
DFA real iteration #1: --------------------------------------------------calls:0,values:915,envs:0
DFA real iteration #2: --------------------------------------------------calls:811,values:1750,envs:0
DFA real iteration #3: --------------------------------------------------calls:812,values:1751,envs:0
DFA real iteration #4: --------------------------------------------------calls:812,values:1751,envs:0
DFA needed 8 iterations (pre/real) (4/4).
Elapsed time for phases: prep 23ms, fe 88ms, createMIR 28ms, ir 4ms, dfa_pre 580ms, dfa_real 194ms, opt 3ms, be 289ms

4 features 6 types and 1 source files included in fum file.
DFA pre iteration #1: --------------------------------------------------calls:0,values:2,envs:0
DFA pre iteration #2: --------------------------------------------------calls:761,values:841,envs:0
DFA pre iteration #3: --------------------------------------------------calls:762,values:842,envs:0
DFA pre iteration #4: --------------------------------------------------calls:762,values:842,envs:0
DFA real iteration #1: --------------------------------------------------calls:0,values:0,envs:0
DFA real iteration #2: --------------------------------------------------calls:761,values:762,envs:0
DFA real iteration #3: --------------------------------------------------calls:762,values:763,envs:0
DFA real iteration #4: --------------------------------------------------calls:762,values:763,envs:0
DFA needed 8 iterations (pre/real) (4/4).
Elapsed time for phases: prep 25ms, fe 98ms, createMIR 28ms, ir 4ms, dfa_pre 523ms, dfa_real 105ms, opt 2ms, be 248ms

sequence_group_map_reduce old/new

118 features 110 types and 1 source files included in fum file.
DFA pre iteration #1: --------------------------------------------------calls:0,values:2,envs:0
DFA pre iteration #2: --------------------------------------------------calls:1951,values:2133,envs:0
DFA pre iteration #3: --------------------------------------------------calls:2445,values:2604,envs:0
DFA pre iteration #4: --------------------------------------------------calls:2621,values:2781,envs:0
DFA pre iteration #5: --------------------------------------------------calls:2760,values:2892,envs:0
DFA pre iteration #6: --------------------------------------------------calls:2815,values:2934,envs:0
DFA pre iteration #7: --------------------------------------------------calls:2847,values:2963,envs:0
DFA pre iteration #8: --------------------------------------------------calls:2868,values:2966,envs:0
DFA pre iteration #9: --------------------------------------------------calls:2868,values:2968,envs:0
DFA pre iteration #10: --------------------------------------------------calls:2873,values:2968,envs:0
DFA pre iteration #11: --------------------------------------------------calls:2873,values:2968,envs:0
DFA real iteration #1: --------------------------------------------------calls:0,values:2968,envs:0
DFA real iteration #2: --------------------------------------------------calls:2397,values:5444,envs:0
DFA real iteration #3: --------------------------------------------------calls:2677,values:5696,envs:0
DFA real iteration #4: --------------------------------------------------calls:2759,values:5772,envs:0
DFA real iteration #5: --------------------------------------------------calls:2821,values:5821,envs:0
DFA real iteration #6: --------------------------------------------------calls:2852,values:5824,envs:0
DFA real iteration #7: --------------------------------------------------calls:2852,values:5826,envs:0
DFA real iteration #8: --------------------------------------------------calls:2857,values:5826,envs:0
DFA real iteration #9: --------------------------------------------------calls:2857,values:5826,envs:0
DFA needed 20 iterations (pre/real) (11/9).
Elapsed time for phases: prep 24ms, fe 180ms, createMIR 45ms, ir 8ms, dfa_pre 1603ms, dfa_real 337ms, opt 2ms, be 631ms

118 features 110 types and 1 source files included in fum file.
DFA pre iteration #1: --------------------------------------------------calls:0,values:2,envs:0
DFA pre iteration #2: --------------------------------------------------calls:1458,values:1619,envs:0
DFA pre iteration #3: --------------------------------------------------calls:1837,values:2043,envs:0
DFA pre iteration #4: --------------------------------------------------calls:2157,values:2379,envs:0
DFA pre iteration #5: --------------------------------------------------calls:2298,values:2545,envs:0
DFA pre iteration #6: --------------------------------------------------calls:2406,values:2639,envs:0
DFA pre iteration #7: --------------------------------------------------calls:2421,values:2659,envs:0
DFA pre iteration #8: --------------------------------------------------calls:2442,values:2675,envs:0
DFA pre iteration #9: --------------------------------------------------calls:2442,values:2675,envs:0
DFA real iteration #1: --------------------------------------------------calls:0,values:0,envs:0
DFA real iteration #2: --------------------------------------------------calls:1863,values:1986,envs:0
DFA real iteration #3: --------------------------------------------------calls:2126,values:2274,envs:0
DFA real iteration #4: --------------------------------------------------calls:2283,values:2426,envs:0
DFA real iteration #5: --------------------------------------------------calls:2394,values:2524,envs:0
DFA real iteration #6: --------------------------------------------------calls:2409,values:2544,envs:0
DFA real iteration #7: --------------------------------------------------calls:2430,values:2560,envs:0
DFA real iteration #8: --------------------------------------------------calls:2430,values:2560,envs:0
DFA needed 17 iterations (pre/real) (9/8).
Elapsed time for phases: prep 35ms, fe 238ms, createMIR 56ms, ir 10ms, dfa_pre 2126ms, dfa_real 651ms, opt 4ms, be 693ms