[14] | 1 | /**CFile*********************************************************************** |
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| 2 | |
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| 3 | FileName [synthSimple.c] |
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| 4 | |
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| 5 | PackageName [synth] |
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| 6 | |
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| 7 | Synopsis [Simple factorization method.] |
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| 8 | |
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| 9 | Description [] |
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| 10 | |
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| 11 | Author [In-Ho Moon, Balakrishna Kumthekar] |
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| 12 | |
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| 13 | Copyright [This file was created at the University of Colorado at Boulder. |
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| 14 | The University of Colorado at Boulder makes no warranty about the suitability |
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| 15 | of this software for any purpose. It is presented on an AS IS basis.] |
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| 16 | |
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| 17 | ******************************************************************************/ |
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| 18 | |
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| 19 | #include "synthInt.h" |
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| 20 | |
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| 21 | static char rcsid[] UNUSED = "$Id: synthSimple.c,v 1.36 2005/04/23 14:37:51 jinh Exp $"; |
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| 22 | |
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| 23 | /*---------------------------------------------------------------------------*/ |
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| 24 | /* Constant declarations */ |
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| 25 | /*---------------------------------------------------------------------------*/ |
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| 26 | |
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| 27 | |
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| 28 | /*---------------------------------------------------------------------------*/ |
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| 29 | /* Type declarations */ |
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| 30 | /*---------------------------------------------------------------------------*/ |
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| 31 | |
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| 32 | |
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| 33 | /*---------------------------------------------------------------------------*/ |
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| 34 | /* Structure declarations */ |
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| 35 | /*---------------------------------------------------------------------------*/ |
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| 36 | |
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| 37 | |
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| 38 | /*---------------------------------------------------------------------------*/ |
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| 39 | /* Variable declarations */ |
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| 40 | /*---------------------------------------------------------------------------*/ |
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| 41 | |
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| 42 | extern int CompMode; |
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| 43 | extern int UseMtree; |
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| 44 | extern int UseCommonDivisor; |
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| 45 | extern int TryNodeSharing; |
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| 46 | extern int Resubstitution; |
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| 47 | extern int RemainderComplement; |
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| 48 | extern int noMemoryFlag; |
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| 49 | extern int VerifyTreeMode; |
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| 50 | |
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| 51 | /**AutomaticStart*************************************************************/ |
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| 52 | |
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| 53 | /*---------------------------------------------------------------------------*/ |
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| 54 | /* Static function prototypes */ |
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| 55 | /*---------------------------------------------------------------------------*/ |
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| 56 | |
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| 57 | static int CountZddLeafLiterals(bdd_manager *dd, bdd_node *node); |
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| 58 | |
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| 59 | /**AutomaticEnd***************************************************************/ |
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| 60 | |
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| 61 | |
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| 62 | /*---------------------------------------------------------------------------*/ |
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| 63 | /* Definition of exported functions */ |
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| 64 | /*---------------------------------------------------------------------------*/ |
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| 65 | |
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| 66 | |
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| 67 | /*---------------------------------------------------------------------------*/ |
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| 68 | /* Definition of internal functions */ |
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| 69 | /*---------------------------------------------------------------------------*/ |
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| 70 | |
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| 71 | /**Function******************************************************************** |
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| 72 | |
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| 73 | Synopsis [Factorizes a function using a simple method.] |
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| 74 | |
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| 75 | Description [Factorizes a function using a simple method. Here simple |
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| 76 | refers that this algorithm tries to factorize just recursively. First |
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| 77 | it finds a divisor, then finds quotient and remainder, and then recurs |
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| 78 | for each. The argument table consists of a pair of bdd_node and MlTree, |
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| 79 | f is to be factorized, level is the depth of MlTree from top, ref returns 1 |
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| 80 | if new MlTree is created for f, otherwise returns 0, comp_d_tree is usually |
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| 81 | NULL except when post factoring takes place(here post factoring is the |
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| 82 | case to factorize a leaf node by another leaf node and a leaf node is a node |
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| 83 | in which there is no divisor), comp_d_tree is a tree which is going to be |
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| 84 | used as a divisor and comp_d_flag is used to indicate which node is going |
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| 85 | to be used as a divisor between regular node and complement node, bring is |
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| 86 | usually NULL except post factoring: when we update an already existing |
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| 87 | tree by further factorization, we pass this tree to reuse it.] |
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| 88 | |
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| 89 | SideEffects [] |
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| 90 | |
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| 91 | SeeAlso [SynthGenericFactorTree] |
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| 92 | |
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| 93 | ******************************************************************************/ |
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| 94 | MlTree * |
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| 95 | SynthSimpleFactorTree(bdd_manager *dd, |
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| 96 | st_table *table, |
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| 97 | bdd_node *f, |
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| 98 | int level, |
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| 99 | int *ref, |
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| 100 | MlTree *comp_d_tree, |
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| 101 | int comp_d_flag, |
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| 102 | MlTree *bring, |
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| 103 | int verbosity) |
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| 104 | { |
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| 105 | bdd_node *one = bdd_read_one(dd); |
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| 106 | bdd_node *zero = bdd_read_zero(dd); |
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| 107 | bdd_node *d, *q, *r, *m; |
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| 108 | MlTree *tree, *q_tree, *d_tree, *r_tree; |
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| 109 | char message[120]; |
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| 110 | char space[100]; |
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| 111 | MlTree *comp_q_tree = (MlTree *)NULL; |
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| 112 | MlTree *comp_r_tree = (MlTree *)NULL; |
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| 113 | int found; |
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| 114 | MlTree *tmp_tree; |
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| 115 | int comp_flag; |
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| 116 | |
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| 117 | if (verbosity > 1) { |
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| 118 | SynthGetSpaceString(space, level * 2, 80); |
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| 119 | sprintf(message, "%s[%d] in : ", space, level); |
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| 120 | SynthPrintZddTreeMessage(dd, f, message); |
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| 121 | sprintf(message, "%s[%d]out : ", space, level); |
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| 122 | } |
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| 123 | |
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| 124 | if (bring) |
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| 125 | tree = (MlTree *)NULL; |
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| 126 | else { |
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| 127 | tree = SynthLookupMlTable(table, dd, f, 1, verbosity); |
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| 128 | /* tree could be NULL because of reordering, or a failure to |
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| 129 | * allocate memory or just that f was not in the cache. |
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| 130 | * So, we would like return NULL ONLY in the case of |
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| 131 | * reordering or failure to allocate memory. |
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| 132 | */ |
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| 133 | if (bdd_read_reordered_field(dd) || noMemoryFlag == 1) |
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| 134 | return(NULL); |
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| 135 | } |
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| 136 | if (tree) { |
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| 137 | if (verbosity > 1) |
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| 138 | SynthPrintMlTreeMessage(dd, tree, message); |
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| 139 | *ref = 1; |
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| 140 | return(tree); |
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| 141 | } |
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| 142 | |
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| 143 | if (f == one || f == zero) { |
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| 144 | tree = SynthFindOrCreateMlTree(table, dd, f, 1, 0, ref, verbosity); |
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| 145 | if (!tree) |
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| 146 | return(NULL); |
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| 147 | tmp_tree = tree; |
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| 148 | tree = SynthCheckAndMakeComplement(dd, table, tree, &comp_flag, verbosity); |
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| 149 | if (!tree) { |
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| 150 | if (*ref == 0) |
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| 151 | SynthFreeMlTree(MlTree_Regular(tmp_tree), 1); |
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| 152 | return(NULL); |
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| 153 | } else if (tree != tmp_tree) { |
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| 154 | *ref = 1; |
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| 155 | if (comp_flag) |
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| 156 | tree = MlTree_Not(tree); |
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| 157 | } |
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| 158 | if (verbosity > 1) |
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| 159 | SynthPrintMlTreeMessage(dd, tree, message); |
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| 160 | return(tree); |
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| 161 | } |
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| 162 | |
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| 163 | d_tree = (MlTree *)NULL; |
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| 164 | if (comp_d_tree) { |
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| 165 | if (comp_d_flag) |
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| 166 | d = comp_d_tree->complement; |
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| 167 | else |
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| 168 | d = comp_d_tree->node; |
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| 169 | if (!d) |
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| 170 | return((MlTree *)NULL); |
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| 171 | bdd_ref(d); |
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| 172 | } else { |
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| 173 | found = 0; |
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| 174 | d = (* SynthGetZddDivisorFunc())(dd, f); |
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| 175 | if (!d) |
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| 176 | return(NULL); |
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| 177 | bdd_ref(d); |
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| 178 | if (TryNodeSharing) { |
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| 179 | /* Here, we don't need to call bdd_ref. */ |
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| 180 | d = SynthFindBiggerDivisorInList(dd, table, f, d, &found, |
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| 181 | &comp_d_flag, &comp_d_tree, verbosity); |
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| 182 | if (!d) |
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| 183 | return(NULL); |
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| 184 | } |
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| 185 | if (UseCommonDivisor && found == 0) { |
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| 186 | tree = SynthGetFactorTreeWithCommonDivisor(dd, table, |
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| 187 | SynthSimpleFactorTree, f, d, level, ref, verbosity); |
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| 188 | if (tree) |
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| 189 | return(tree); |
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| 190 | if (bdd_read_reordered_field(dd) || noMemoryFlag == 1) |
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| 191 | return(NULL); |
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| 192 | } |
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| 193 | } |
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| 194 | if (d == f) { |
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| 195 | tree = SynthFindOrCreateMlTree(table, dd, f, 1, 0, ref, verbosity); |
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| 196 | if (!tree) { |
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| 197 | bdd_recursive_deref_zdd(dd, d); |
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| 198 | return(NULL); |
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| 199 | } |
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| 200 | if (verbosity > 1) |
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| 201 | SynthPrintMlTreeMessage(dd, tree, message); |
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| 202 | tmp_tree = tree; |
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| 203 | tree = SynthCheckAndMakeComplement(dd, table, tree, &comp_flag, verbosity); |
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| 204 | if (!tree) { |
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| 205 | bdd_recursive_deref_zdd(dd, d); |
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| 206 | return(NULL); |
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| 207 | } else if (tree == tmp_tree) { |
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| 208 | if (*ref == 0) |
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| 209 | SynthPutMlTreeInList(dd, tree, 0); |
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| 210 | } else { |
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| 211 | *ref = 1; |
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| 212 | if (comp_flag) |
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| 213 | tree = MlTree_Not(tree); |
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| 214 | } |
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| 215 | bdd_recursive_deref_zdd(dd, d); |
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| 216 | return(tree); |
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| 217 | } |
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| 218 | if (!comp_d_tree) { |
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| 219 | if (st_lookup(table, (char *)d, &d_tree)) { |
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| 220 | SynthSetSharedFlag(dd, d_tree); |
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| 221 | if (MlTree_Regular(d_tree)->candidate) { |
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| 222 | if (!SynthUseCandidate(table, dd, d_tree, verbosity)) { |
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| 223 | bdd_recursive_deref_zdd(dd, d); |
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| 224 | return(NULL); |
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| 225 | } |
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| 226 | } |
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| 227 | if (MlTree_IsComplement(d_tree)) { |
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| 228 | d_tree = MlTree_Regular(d_tree); |
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| 229 | comp_d_tree = d_tree; |
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| 230 | d_tree = (MlTree *)NULL; |
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| 231 | } |
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| 232 | } |
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| 233 | } else { |
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| 234 | if (!comp_d_flag) |
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| 235 | d_tree = comp_d_tree; |
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| 236 | } |
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| 237 | |
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| 238 | q = (* SynthGetZddDivideFunc())(dd, f, d); |
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| 239 | if (!q) { |
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| 240 | bdd_recursive_deref_zdd(dd, d); |
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| 241 | return(NULL); |
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| 242 | } |
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| 243 | bdd_ref(q); |
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| 244 | if (comp_d_tree && q == zero) { |
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| 245 | bdd_recursive_deref_zdd(dd, d); |
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| 246 | bdd_recursive_deref_zdd(dd, q); |
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| 247 | return((MlTree *)NULL); |
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| 248 | } |
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| 249 | if (q == one) { |
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| 250 | bdd_recursive_deref_zdd(dd, q); |
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| 251 | tree = SynthPostFactorTree(dd, table, f, q, d, bring, |
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| 252 | comp_d_tree, comp_d_flag, message, ref, verbosity); |
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| 253 | bdd_recursive_deref_zdd(dd, d); |
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| 254 | return(tree); |
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| 255 | } |
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| 256 | |
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| 257 | if (comp_d_tree && d_tree == comp_d_tree) |
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| 258 | comp_d_tree = (MlTree *)NULL; |
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| 259 | |
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| 260 | q_tree = (MlTree *)NULL; |
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| 261 | if (st_lookup(table, (char *)q, &q_tree)) { |
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| 262 | SynthSetSharedFlag(dd, q_tree); |
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| 263 | if (MlTree_Regular(q_tree)->candidate) { |
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| 264 | if (!SynthUseCandidate(table, dd, q_tree, verbosity)) { |
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| 265 | bdd_recursive_deref_zdd(dd, d); |
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| 266 | bdd_recursive_deref_zdd(dd, q); |
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| 267 | return(NULL); |
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| 268 | } |
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| 269 | } |
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| 270 | if (MlTree_IsComplement(q_tree)) { |
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| 271 | q_tree = MlTree_Regular(q_tree); |
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| 272 | comp_q_tree = q_tree; |
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| 273 | q_tree = (MlTree *)NULL; |
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| 274 | } |
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| 275 | } |
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| 276 | |
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| 277 | m = (* SynthGetZddProductFunc())(dd, d, q); |
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| 278 | if (!m) { |
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| 279 | bdd_recursive_deref_zdd(dd, d); |
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| 280 | bdd_recursive_deref_zdd(dd, q); |
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| 281 | return(NULL); |
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| 282 | } |
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| 283 | bdd_ref(m); |
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| 284 | r = bdd_zdd_diff(dd, f, m); |
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| 285 | if (!r) { |
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| 286 | bdd_recursive_deref_zdd(dd, d); |
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| 287 | bdd_recursive_deref_zdd(dd, q); |
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| 288 | bdd_recursive_deref_zdd(dd, m); |
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| 289 | return(NULL); |
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| 290 | } |
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| 291 | bdd_ref(r); |
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| 292 | |
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| 293 | r_tree = (MlTree *)NULL; |
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| 294 | if (st_lookup(table, (char *)r, &r_tree)) { |
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| 295 | SynthSetSharedFlag(dd, r_tree); |
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| 296 | if (MlTree_Regular(r_tree)->candidate) { |
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| 297 | if (!SynthUseCandidate(table, dd, r_tree, verbosity)) { |
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| 298 | bdd_recursive_deref_zdd(dd, d); |
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| 299 | bdd_recursive_deref_zdd(dd, q); |
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| 300 | bdd_recursive_deref_zdd(dd, m); |
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| 301 | bdd_recursive_deref_zdd(dd, r); |
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| 302 | return(NULL); |
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| 303 | } |
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| 304 | } |
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| 305 | if (MlTree_IsComplement(r_tree)) { |
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| 306 | r_tree = MlTree_Regular(r_tree); |
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| 307 | comp_r_tree = r_tree; |
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| 308 | r_tree = (MlTree *)NULL; |
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| 309 | } |
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| 310 | } |
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| 311 | |
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| 312 | tree = SynthFactorTreeRecur(dd, table, SynthSimpleFactorTree, |
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| 313 | f, q, d, r, m, q_tree, d_tree, r_tree, |
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| 314 | comp_q_tree, comp_d_tree, comp_r_tree, |
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| 315 | bring, level, space, message, ref, verbosity); |
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| 316 | bdd_recursive_deref_zdd(dd, d); |
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| 317 | bdd_recursive_deref_zdd(dd, q); |
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| 318 | bdd_recursive_deref_zdd(dd, m); |
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| 319 | bdd_recursive_deref_zdd(dd, r); |
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| 320 | |
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| 321 | if (VerifyTreeMode) { |
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| 322 | SynthVerifyTree(dd, tree, 0); |
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| 323 | SynthVerifyMlTable(dd, table); |
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| 324 | } |
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| 325 | |
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| 326 | return(tree); |
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| 327 | } |
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| 328 | |
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| 329 | |
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| 330 | /**Function******************************************************************** |
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| 331 | |
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| 332 | Synopsis [Finds a bigger divisor in divisor list.] |
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| 333 | |
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| 334 | Description [Finds a bigger divisor in divisor list.] |
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| 335 | |
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| 336 | SideEffects [] |
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| 337 | |
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| 338 | SeeAlso [SynthSimpleFactorTree SynthGenericFactorTree] |
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| 339 | |
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| 340 | ******************************************************************************/ |
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| 341 | bdd_node * |
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| 342 | SynthFindBiggerDivisorInList(bdd_manager *dd, |
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| 343 | st_table *table, |
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| 344 | bdd_node *f, |
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| 345 | bdd_node *d, |
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| 346 | int *found, |
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| 347 | int *comp_d_flag, |
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| 348 | MlTree **comp_d_tree, |
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| 349 | int verbosity) |
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| 350 | { |
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| 351 | bdd_node *zero = bdd_read_zero(dd); |
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| 352 | int size, nSupports; |
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| 353 | unsigned int *support; |
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| 354 | int flag; |
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| 355 | int nL, nLiterals; |
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| 356 | bdd_node *candy; |
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| 357 | MlTree *cur; |
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| 358 | bdd_node *q; |
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| 359 | |
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| 360 | nSupports = SynthGetSupportCount(dd, d); |
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| 361 | size = bdd_num_zdd_vars(dd) / (sizeof(unsigned int) * 8) + 1; |
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| 362 | support = ALLOC(unsigned int, size); |
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| 363 | SynthGetSupportMask(dd, f, support); |
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| 364 | flag = 0; |
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| 365 | cur = SynthGetHeadTreeOfSize(SynthGetLiteralCount(dd, f) - 1); |
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| 366 | nLiterals = CountZddLeafLiterals(dd, d); |
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| 367 | if (nLiterals == -1) { |
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| 368 | noMemoryFlag = 1; |
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| 369 | FREE(support); |
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| 370 | bdd_recursive_deref_zdd(dd, d); |
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| 371 | return(NULL); |
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| 372 | } |
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| 373 | |
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| 374 | while (cur) { |
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| 375 | if (cur->nLiterals < nSupports) |
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| 376 | break; |
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| 377 | nL = CountZddLeafLiterals(dd, cur->node); |
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| 378 | |
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| 379 | if ((!SynthIsSubsetOfSupport(size, cur->support, support)) || |
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| 380 | nL < nLiterals) { |
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| 381 | flag = 0; |
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| 382 | cur = cur->next; |
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| 383 | continue; |
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| 384 | } |
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| 385 | |
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| 386 | if (flag) |
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| 387 | candy = cur->complement; |
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| 388 | else |
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| 389 | candy = cur->node; |
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| 390 | q = (* SynthGetZddDivideFunc())(dd, f, candy); |
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| 391 | if (!q) { |
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| 392 | FREE(support); |
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| 393 | bdd_recursive_deref_zdd(dd, d); |
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| 394 | return(NULL); |
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| 395 | } |
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| 396 | bdd_ref(q); |
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| 397 | bdd_recursive_deref_zdd(dd, q); |
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| 398 | if (q != zero) { |
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| 399 | if (MlTree_Regular(cur)->candidate) { |
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| 400 | if (!SynthUseCandidate(table, dd, cur, verbosity)) { |
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| 401 | FREE(support); |
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| 402 | bdd_recursive_deref_zdd(dd, d); |
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| 403 | return(NULL); |
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| 404 | } |
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| 405 | } |
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| 406 | *found = 1; |
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| 407 | *comp_d_flag = flag; |
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| 408 | *comp_d_tree = cur; |
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| 409 | bdd_recursive_deref_zdd(dd, d); |
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| 410 | d = candy; |
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| 411 | bdd_ref(d); |
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| 412 | break; |
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| 413 | } |
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| 414 | if (flag == 0 && cur->complement) |
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| 415 | flag = 1; |
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| 416 | else { |
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| 417 | cur = cur->next; |
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| 418 | flag = 0; |
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| 419 | } |
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| 420 | } |
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| 421 | |
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| 422 | FREE(support); |
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| 423 | return(d); |
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| 424 | } |
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| 425 | |
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| 426 | |
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| 427 | /**Function******************************************************************** |
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| 428 | |
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| 429 | Synopsis [Factorizes a function with a common divisor if it exists.] |
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| 430 | |
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| 431 | Description [Factorizes a function with a common divisor if it exists.] |
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| 432 | |
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| 433 | SideEffects [] |
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| 434 | |
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| 435 | SeeAlso [SynthSimpleFactorTree SynthGenericFactorTree] |
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| 436 | |
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| 437 | ******************************************************************************/ |
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| 438 | MlTree * |
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| 439 | SynthGetFactorTreeWithCommonDivisor(bdd_manager *dd, |
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| 440 | st_table *table, |
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| 441 | MlTree *(* factoring_func)(bdd_manager *, |
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| 442 | st_table *, |
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| 443 | bdd_node *, int, |
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| 444 | int *, MlTree *, |
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| 445 | int, MlTree *, |
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| 446 | int), |
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| 447 | bdd_node *f, |
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| 448 | bdd_node *d, |
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| 449 | int level, |
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| 450 | int *ref, |
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| 451 | int verbosity) |
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| 452 | { |
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| 453 | bdd_node *zero = bdd_read_zero(dd); |
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| 454 | bdd_node *cd; |
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| 455 | bdd_node *q; |
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| 456 | MlTree *tree, *q_tree, *d_tree, *r_tree; |
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| 457 | int q_ref, d_ref, r_ref; |
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| 458 | MlTree *comp_q_tree = (MlTree *)NULL; |
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| 459 | MlTree *comp_d_tree = (MlTree *)NULL; |
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| 460 | MlTree *comp_r_tree = (MlTree *)NULL; |
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| 461 | int q_tree_exist; |
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| 462 | MlTree *tmp_tree; |
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| 463 | char message[120]; |
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| 464 | char space[100]; |
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| 465 | char comp_mess[120]; |
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| 466 | int comp_flag; |
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| 467 | |
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| 468 | q_ref = d_ref = r_ref = 0; |
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| 469 | |
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| 470 | if (verbosity > 1) { |
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| 471 | SynthGetSpaceString(space, level * 2, 80); |
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| 472 | sprintf(message, "%s[%d]out : ", space, level); |
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| 473 | } |
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| 474 | |
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| 475 | cd = SynthZddCommonDivisor(dd, f); |
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| 476 | if (cd) { |
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| 477 | bdd_recursive_deref_zdd(dd, d); |
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| 478 | d = cd; |
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| 479 | bdd_ref(d); |
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| 480 | q = (* SynthGetZddDivideFunc())(dd, f, d); |
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| 481 | if (!q) { |
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| 482 | bdd_recursive_deref_zdd(dd, d); |
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| 483 | return(NULL); |
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| 484 | } |
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| 485 | bdd_ref(q); |
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| 486 | |
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| 487 | d_tree = (MlTree *)NULL; |
---|
| 488 | if (st_lookup(table, (char *)d, &d_tree)) { |
---|
| 489 | SynthSetSharedFlag(dd, d_tree); |
---|
| 490 | if (MlTree_Regular(d_tree)->candidate) { |
---|
| 491 | if (!SynthUseCandidate(table, dd, d_tree, verbosity)) { |
---|
| 492 | bdd_recursive_deref_zdd(dd, d); |
---|
| 493 | bdd_recursive_deref_zdd(dd, q); |
---|
| 494 | return(NULL); |
---|
| 495 | } |
---|
| 496 | } |
---|
| 497 | if (MlTree_IsComplement(d_tree)) { |
---|
| 498 | d_tree = MlTree_Regular(d_tree); |
---|
| 499 | comp_d_tree = d_tree; |
---|
| 500 | } |
---|
| 501 | d_ref = 1; |
---|
| 502 | } else { |
---|
| 503 | d_tree = SynthFindOrCreateMlTree(table, dd, d, 1, 0, &d_ref, verbosity); |
---|
| 504 | if (!d_tree) { |
---|
| 505 | bdd_recursive_deref_zdd(dd, d); |
---|
| 506 | bdd_recursive_deref_zdd(dd, q); |
---|
| 507 | return(NULL); |
---|
| 508 | } |
---|
| 509 | if (MlTree_IsComplement(d_tree)) { |
---|
| 510 | d_tree = MlTree_Regular(d_tree); |
---|
| 511 | comp_d_tree = d_tree; |
---|
| 512 | } |
---|
| 513 | tmp_tree = d_tree; |
---|
| 514 | d_tree = SynthCheckAndMakeComplement(dd, table, d_tree, &comp_flag, |
---|
| 515 | verbosity); |
---|
| 516 | if (!d_tree) { |
---|
| 517 | bdd_recursive_deref_zdd(dd, d); |
---|
| 518 | bdd_recursive_deref_zdd(dd, q); |
---|
| 519 | return(NULL); |
---|
| 520 | } else if (d_tree == tmp_tree) { |
---|
| 521 | if (d_ref == 0) |
---|
| 522 | SynthPutMlTreeInList(dd, d_tree, 0); |
---|
| 523 | } else { |
---|
| 524 | if (comp_flag) |
---|
| 525 | comp_d_tree = d_tree; |
---|
| 526 | d_ref = 1; |
---|
| 527 | } |
---|
| 528 | } |
---|
| 529 | |
---|
| 530 | q_tree = (MlTree *)NULL; |
---|
| 531 | if (st_lookup(table, (char *)q, &q_tree)) { |
---|
| 532 | SynthSetSharedFlag(dd, q_tree); |
---|
| 533 | if (MlTree_Regular(q_tree)->candidate) { |
---|
| 534 | if (!SynthUseCandidate(table, dd, q_tree, verbosity)) { |
---|
| 535 | bdd_recursive_deref_zdd(dd, d); |
---|
| 536 | bdd_recursive_deref_zdd(dd, q); |
---|
| 537 | return(NULL); |
---|
| 538 | } |
---|
| 539 | } |
---|
| 540 | if (MlTree_IsComplement(q_tree)) { |
---|
| 541 | q_tree = MlTree_Regular(q_tree); |
---|
| 542 | comp_q_tree = q_tree; |
---|
| 543 | q_tree = (MlTree *)NULL; |
---|
| 544 | } |
---|
| 545 | } |
---|
| 546 | |
---|
| 547 | if (verbosity > 1) |
---|
| 548 | (void) fprintf(vis_stdout,"%s[%d] quotient\n", space, level); |
---|
| 549 | q_tree_exist = 0; |
---|
| 550 | if (q_tree) { |
---|
| 551 | q_ref = 1; |
---|
| 552 | q_tree_exist = 1; |
---|
| 553 | } else if (comp_q_tree) { |
---|
| 554 | q_tree = comp_q_tree; |
---|
| 555 | q_ref = 1; |
---|
| 556 | if (verbosity > 1) { |
---|
| 557 | sprintf(comp_mess, "%s\t(C) : ", space); |
---|
| 558 | SynthPrintZddTreeMessage(dd, q, comp_mess); |
---|
| 559 | } |
---|
| 560 | } else { |
---|
| 561 | q_tree = (* factoring_func)(dd, table, q, level + 1,&q_ref, |
---|
| 562 | NULL, 0, NULL, verbosity); |
---|
| 563 | if (!q_tree) { |
---|
| 564 | bdd_recursive_deref_zdd(dd, d); |
---|
| 565 | bdd_recursive_deref_zdd(dd, q); |
---|
| 566 | return(NULL); |
---|
| 567 | } |
---|
| 568 | if (MlTree_IsComplement(q_tree)) { |
---|
| 569 | q_tree = MlTree_Regular(q_tree); |
---|
| 570 | comp_q_tree = q_tree; |
---|
| 571 | } else |
---|
| 572 | bdd_ref(q_tree->node); |
---|
| 573 | } |
---|
| 574 | tmp_tree = q_tree; |
---|
| 575 | q_tree = SynthCheckAndMakeComplement(dd, table, q_tree, &comp_flag, |
---|
| 576 | verbosity); |
---|
| 577 | if (!q_tree) { |
---|
| 578 | bdd_recursive_deref_zdd(dd, d); |
---|
| 579 | bdd_recursive_deref_zdd(dd, q); |
---|
| 580 | if (comp_q_tree != q_tree) |
---|
| 581 | bdd_recursive_deref_zdd(dd, q_tree->node); |
---|
| 582 | return(NULL); |
---|
| 583 | } else if (q_tree != tmp_tree) { |
---|
| 584 | if (comp_flag) |
---|
| 585 | comp_q_tree = q_tree; |
---|
| 586 | q_ref = 1; |
---|
| 587 | } |
---|
| 588 | |
---|
| 589 | r_tree = SynthFindOrCreateMlTree(table, dd, zero, 1, 0, &r_ref, verbosity); |
---|
| 590 | if (!r_tree) { |
---|
| 591 | bdd_recursive_deref_zdd(dd, d); |
---|
| 592 | bdd_recursive_deref_zdd(dd, q); |
---|
| 593 | if (comp_q_tree != q_tree) |
---|
| 594 | bdd_recursive_deref_zdd(dd, q_tree->node); |
---|
| 595 | return(NULL); |
---|
| 596 | } |
---|
| 597 | if (MlTree_IsComplement(r_tree)) { |
---|
| 598 | r_tree = MlTree_Regular(r_tree); |
---|
| 599 | comp_r_tree = r_tree; |
---|
| 600 | } |
---|
| 601 | tmp_tree = r_tree; |
---|
| 602 | r_tree = SynthCheckAndMakeComplement(dd, table, r_tree, &comp_flag, |
---|
| 603 | verbosity); |
---|
| 604 | if (!r_tree) { |
---|
| 605 | bdd_recursive_deref_zdd(dd, d); |
---|
| 606 | bdd_recursive_deref_zdd(dd, q); |
---|
| 607 | if (comp_q_tree != q_tree) |
---|
| 608 | bdd_recursive_deref_zdd(dd, q_tree->node); |
---|
| 609 | return(NULL); |
---|
| 610 | } else if (r_tree != tmp_tree) { |
---|
| 611 | if (comp_flag) |
---|
| 612 | comp_r_tree = r_tree; |
---|
| 613 | r_ref = 1; |
---|
| 614 | } |
---|
| 615 | |
---|
| 616 | bdd_recursive_deref_zdd(dd, q); |
---|
| 617 | bdd_recursive_deref_zdd(dd, d); |
---|
| 618 | if ((!q_tree_exist) && (!comp_q_tree)) |
---|
| 619 | bdd_recursive_deref_zdd(dd, q_tree->node); |
---|
| 620 | |
---|
| 621 | tree = SynthFindOrCreateMlTree(table, dd, f, 0, 0, ref, verbosity); |
---|
| 622 | if (!tree) |
---|
| 623 | return(NULL); |
---|
| 624 | if (*ref == 1) |
---|
| 625 | (void) fprintf(vis_stdout, "** synth warning: May be duplicate.\n"); |
---|
| 626 | tree->q = q_tree; |
---|
| 627 | tree->d = d_tree; |
---|
| 628 | tree->r = r_tree; |
---|
| 629 | if (comp_q_tree) |
---|
| 630 | tree->q_comp = 1; |
---|
| 631 | if (comp_d_tree) |
---|
| 632 | tree->d_comp = 1; |
---|
| 633 | if (comp_r_tree) |
---|
| 634 | tree->r_comp = 1; |
---|
| 635 | tree->q_ref = q_ref; |
---|
| 636 | tree->d_ref = d_ref; |
---|
| 637 | tree->r_ref = r_ref; |
---|
| 638 | if (verbosity > 1) |
---|
| 639 | SynthPrintMlTreeMessage(dd, tree, message); |
---|
| 640 | SynthPutMlTreeInList(dd, tree, 0); |
---|
| 641 | if (VerifyTreeMode) { |
---|
| 642 | SynthVerifyTree(dd, tree, 0); |
---|
| 643 | SynthVerifyMlTable(dd, table); |
---|
| 644 | } |
---|
| 645 | return(tree); |
---|
| 646 | } else if (bdd_read_reordered_field(dd) || noMemoryFlag == 1) |
---|
| 647 | bdd_recursive_deref_zdd(dd, d); |
---|
| 648 | return(NULL); |
---|
| 649 | } |
---|
| 650 | |
---|
| 651 | |
---|
| 652 | /**Function******************************************************************** |
---|
| 653 | |
---|
| 654 | Synopsis [Try to factorize between leaf trees.] |
---|
| 655 | |
---|
| 656 | Description [Try to factorize between leaf trees.] |
---|
| 657 | |
---|
| 658 | SideEffects [] |
---|
| 659 | |
---|
| 660 | SeeAlso [SynthSimpleFactorTree SynthGenericFactorTree] |
---|
| 661 | |
---|
| 662 | ******************************************************************************/ |
---|
| 663 | MlTree * |
---|
| 664 | SynthPostFactorTree(bdd_manager *dd, |
---|
| 665 | st_table *table, |
---|
| 666 | bdd_node *f, |
---|
| 667 | bdd_node *q, |
---|
| 668 | bdd_node *d, |
---|
| 669 | MlTree *bring, |
---|
| 670 | MlTree *comp_d_tree, |
---|
| 671 | int comp_d_flag, |
---|
| 672 | char *message, |
---|
| 673 | int *ref, |
---|
| 674 | int verbosity) |
---|
| 675 | { |
---|
| 676 | bdd_node *one = bdd_read_one(dd); |
---|
| 677 | bdd_node *r; |
---|
| 678 | MlTree *tree, *r_tree, *tmp_tree; |
---|
| 679 | int q_ref, r_ref; |
---|
| 680 | MlTree *comp_r_tree = (MlTree *)NULL; |
---|
| 681 | int comp_flag; |
---|
| 682 | |
---|
| 683 | q_ref = r_ref = 0; |
---|
| 684 | |
---|
| 685 | r = bdd_zdd_diff(dd, f, d); |
---|
| 686 | if (!r) |
---|
| 687 | return(NULL); |
---|
| 688 | bdd_ref(r); |
---|
| 689 | r_tree = (MlTree *)NULL; |
---|
| 690 | if (st_lookup(table, (char *)r, &r_tree)) { |
---|
| 691 | SynthSetSharedFlag(dd, r_tree); |
---|
| 692 | if (MlTree_Regular(r_tree)->candidate) { |
---|
| 693 | if (!SynthUseCandidate(table, dd, r_tree, verbosity)) { |
---|
| 694 | bdd_recursive_deref_zdd(dd, r); |
---|
| 695 | return(NULL); |
---|
| 696 | } |
---|
| 697 | } |
---|
| 698 | if (MlTree_IsComplement(r_tree)) { |
---|
| 699 | r_tree = MlTree_Regular(r_tree); |
---|
| 700 | comp_r_tree = r_tree; |
---|
| 701 | } |
---|
| 702 | r_ref = 1; |
---|
| 703 | } else { |
---|
| 704 | r_tree = SynthFindOrCreateMlTree(table, dd, r, 1, 0, &r_ref, verbosity); |
---|
| 705 | if (!r_tree) { |
---|
| 706 | bdd_recursive_deref_zdd(dd, r); |
---|
| 707 | return(NULL); |
---|
| 708 | } |
---|
| 709 | if (MlTree_IsComplement(r_tree)) { |
---|
| 710 | comp_r_tree = MlTree_Regular(r_tree); |
---|
| 711 | r_tree = comp_r_tree; |
---|
| 712 | } |
---|
| 713 | tmp_tree = r_tree; |
---|
| 714 | r_tree = SynthCheckAndMakeComplement(dd, table, r_tree, &comp_flag, |
---|
| 715 | verbosity); |
---|
| 716 | if (!r_tree) { |
---|
| 717 | bdd_recursive_deref_zdd(dd, r); |
---|
| 718 | return(NULL); |
---|
| 719 | } else if (r_tree == tmp_tree) { |
---|
| 720 | if (r_ref == 0) |
---|
| 721 | SynthPutMlTreeInList(dd, r_tree, 0); |
---|
| 722 | } else { |
---|
| 723 | if (comp_flag) |
---|
| 724 | comp_r_tree = r_tree; |
---|
| 725 | r_ref = 1; |
---|
| 726 | } |
---|
| 727 | } |
---|
| 728 | bdd_recursive_deref_zdd(dd, r); |
---|
| 729 | |
---|
| 730 | if (bring) |
---|
| 731 | tree = bring; |
---|
| 732 | else { |
---|
| 733 | tree = SynthFindOrCreateMlTree(table, dd, f, 0, 0, ref, verbosity); |
---|
| 734 | if (!tree) |
---|
| 735 | return(NULL); |
---|
| 736 | if (*ref) |
---|
| 737 | (void)fprintf(vis_stdout, "** synth warning: May be duplicate.\n"); |
---|
| 738 | } |
---|
| 739 | tree->q = SynthFindOrCreateMlTree(table, dd, one, 1, 0, &q_ref, verbosity); |
---|
| 740 | if (!tree->q) |
---|
| 741 | return(NULL); |
---|
| 742 | if (MlTree_IsComplement(tree->q)) { |
---|
| 743 | tree->q = MlTree_Regular(tree->q); |
---|
| 744 | tree->q_comp = 1; |
---|
| 745 | } |
---|
| 746 | tree->d = comp_d_tree; |
---|
| 747 | tree->r = r_tree; |
---|
| 748 | tree->d_comp = comp_d_flag; |
---|
| 749 | if (comp_r_tree) |
---|
| 750 | tree->r_comp = 1; |
---|
| 751 | tree->q_ref = q_ref; |
---|
| 752 | tree->d_ref = 1; |
---|
| 753 | tree->r_ref = r_ref; |
---|
| 754 | if (verbosity > 1) |
---|
| 755 | SynthPrintMlTreeMessage(dd, tree, message); |
---|
| 756 | if (bring) |
---|
| 757 | bring->leaf = 0; |
---|
| 758 | else |
---|
| 759 | SynthPutMlTreeInList(dd, tree, 0); |
---|
| 760 | if (VerifyTreeMode) { |
---|
| 761 | SynthVerifyTree(dd, tree, 0); |
---|
| 762 | SynthVerifyMlTable(dd, table); |
---|
| 763 | } |
---|
| 764 | return(tree); |
---|
| 765 | } |
---|
| 766 | |
---|
| 767 | |
---|
| 768 | /**Function******************************************************************** |
---|
| 769 | |
---|
| 770 | Synopsis [Recursive procedure of SynthSimpleFactorTree and |
---|
| 771 | SynthGenericFactorTree.] |
---|
| 772 | |
---|
| 773 | Description [Recursive procedure of SynthSimpleFactorTree and |
---|
| 774 | SynthGenericFactorTree.] |
---|
| 775 | |
---|
| 776 | SideEffects [] |
---|
| 777 | |
---|
| 778 | SeeAlso [SynthSimpleFactorTree SynthGenericFactorTree] |
---|
| 779 | |
---|
| 780 | ******************************************************************************/ |
---|
| 781 | MlTree * |
---|
| 782 | SynthFactorTreeRecur(bdd_manager *dd, |
---|
| 783 | st_table *table, |
---|
| 784 | MlTree *(* factoring_func)(bdd_manager *, st_table *, |
---|
| 785 | bdd_node *, int, int *, |
---|
| 786 | MlTree *, int, MlTree *, int), |
---|
| 787 | bdd_node *f, |
---|
| 788 | bdd_node *q, |
---|
| 789 | bdd_node *d, |
---|
| 790 | bdd_node *r, |
---|
| 791 | bdd_node *m, |
---|
| 792 | MlTree *q_tree, |
---|
| 793 | MlTree *d_tree, |
---|
| 794 | MlTree *r_tree, |
---|
| 795 | MlTree *comp_q_tree, |
---|
| 796 | MlTree *comp_d_tree, |
---|
| 797 | MlTree *comp_r_tree, |
---|
| 798 | MlTree *bring, |
---|
| 799 | int level, |
---|
| 800 | char *space, |
---|
| 801 | char *message, |
---|
| 802 | int *ref, |
---|
| 803 | int verbosity) |
---|
| 804 | { |
---|
| 805 | bdd_node *one = bdd_read_one(dd); |
---|
| 806 | bdd_node *zero = bdd_read_zero(dd); |
---|
| 807 | int q_tree_exist, d_tree_exist, r_tree_exist; |
---|
| 808 | MlTree *m_tree; |
---|
| 809 | MlTree *tree, *tmp_tree; |
---|
| 810 | int q_ref, d_ref, r_ref, m_ref; |
---|
| 811 | char comp_mess[120]; |
---|
| 812 | int comp_flag; |
---|
| 813 | |
---|
| 814 | q_ref = d_ref = r_ref = 0; |
---|
| 815 | |
---|
| 816 | if (verbosity > 1) |
---|
| 817 | (void) fprintf(vis_stdout,"%s[%d] quotient\n", space, level); |
---|
| 818 | q_tree_exist = 0; |
---|
| 819 | if (q_tree) { |
---|
| 820 | q_ref = 1; |
---|
| 821 | q_tree_exist = 1; |
---|
| 822 | } else if (comp_q_tree) { |
---|
| 823 | q_tree = comp_q_tree; |
---|
| 824 | q_ref = 1; |
---|
| 825 | if (verbosity > 1) { |
---|
| 826 | sprintf(comp_mess, "%s\t(C) : ", space); |
---|
| 827 | SynthPrintZddTreeMessage(dd, q, comp_mess); |
---|
| 828 | } |
---|
| 829 | } else { |
---|
| 830 | q_tree = (* factoring_func)(dd, table, q, level + 1, |
---|
| 831 | &q_ref, NULL, 0, NULL, verbosity); |
---|
| 832 | if (!q_tree) |
---|
| 833 | return(NULL); |
---|
| 834 | if (MlTree_IsComplement(q_tree)) { |
---|
| 835 | q_tree = MlTree_Regular(q_tree); |
---|
| 836 | comp_q_tree = q_tree; |
---|
| 837 | } else |
---|
| 838 | bdd_ref(q_tree->node); |
---|
| 839 | } |
---|
| 840 | tmp_tree = q_tree; |
---|
| 841 | q_tree = SynthCheckAndMakeComplement(dd, table, q_tree, &comp_flag, |
---|
| 842 | verbosity); |
---|
| 843 | if (!q_tree) { |
---|
| 844 | if (comp_q_tree != tmp_tree) |
---|
| 845 | bdd_recursive_deref_zdd(dd, tmp_tree->node); |
---|
| 846 | if (q_ref == 0) |
---|
| 847 | SynthFreeMlTree(MlTree_Regular(tmp_tree), 1); |
---|
| 848 | return(NULL); |
---|
| 849 | } else if (q_tree != tmp_tree) { |
---|
| 850 | if (comp_flag) |
---|
| 851 | comp_q_tree = q_tree; |
---|
| 852 | q_ref = 1; |
---|
| 853 | } |
---|
| 854 | |
---|
| 855 | if (verbosity > 1) |
---|
| 856 | (void)fprintf(vis_stdout,"%s[%d] divisor\n", space, level); |
---|
| 857 | d_tree_exist = 0; |
---|
| 858 | if (d_tree) { |
---|
| 859 | d_ref = 1; |
---|
| 860 | d_tree_exist = 1; |
---|
| 861 | } else if (comp_d_tree) { |
---|
| 862 | d_tree = comp_d_tree; |
---|
| 863 | d_ref = 1; |
---|
| 864 | if (verbosity > 1) { |
---|
| 865 | sprintf(comp_mess, "%s\t(C) : ", space); |
---|
| 866 | SynthPrintZddTreeMessage(dd, d, comp_mess); |
---|
| 867 | } |
---|
| 868 | } else { |
---|
| 869 | d_tree = (* factoring_func)(dd, table, d, level + 1, &d_ref, |
---|
| 870 | NULL, 0, NULL, verbosity); |
---|
| 871 | if (!d_tree) { |
---|
| 872 | if (comp_q_tree != q_tree) |
---|
| 873 | bdd_recursive_deref_zdd(dd, q_tree->node); |
---|
| 874 | if (q_ref == 0) |
---|
| 875 | SynthFreeMlTree(MlTree_Regular(q_tree), 1); |
---|
| 876 | return(NULL); |
---|
| 877 | } |
---|
| 878 | if (MlTree_IsComplement(d_tree)) { |
---|
| 879 | d_tree = MlTree_Regular(d_tree); |
---|
| 880 | comp_d_tree = d_tree; |
---|
| 881 | } else |
---|
| 882 | bdd_ref(d_tree->node); |
---|
| 883 | } |
---|
| 884 | tmp_tree = d_tree; |
---|
| 885 | d_tree = SynthCheckAndMakeComplement(dd, table, d_tree, &comp_flag, |
---|
| 886 | verbosity); |
---|
| 887 | if (!d_tree) { |
---|
| 888 | if (comp_q_tree != q_tree) |
---|
| 889 | bdd_recursive_deref_zdd(dd, q_tree->node); |
---|
| 890 | if (comp_d_tree != tmp_tree) |
---|
| 891 | bdd_recursive_deref_zdd(dd, tmp_tree->node); |
---|
| 892 | if (q_ref == 0) |
---|
| 893 | SynthFreeMlTree(MlTree_Regular(q_tree), 1); |
---|
| 894 | if (d_ref == 0) |
---|
| 895 | SynthFreeMlTree(MlTree_Regular(tmp_tree), 1); |
---|
| 896 | return(NULL); |
---|
| 897 | } else if (d_tree != tmp_tree) { |
---|
| 898 | if (comp_flag) |
---|
| 899 | comp_d_tree = d_tree; |
---|
| 900 | d_ref = 1; |
---|
| 901 | } |
---|
| 902 | |
---|
| 903 | m_tree = (MlTree *)NULL; |
---|
| 904 | m_ref = 0; |
---|
| 905 | if (UseMtree && m != f) { |
---|
| 906 | m_tree = SynthFindOrCreateMlTree(table, dd, m, 0, 1, &m_ref, verbosity); |
---|
| 907 | if (!m_tree) { |
---|
| 908 | if (comp_q_tree != q_tree) |
---|
| 909 | bdd_recursive_deref_zdd(dd, q_tree->node); |
---|
| 910 | if (comp_d_tree != d_tree) |
---|
| 911 | bdd_recursive_deref_zdd(dd, d_tree->node); |
---|
| 912 | if (q_ref == 0) |
---|
| 913 | SynthFreeMlTree(MlTree_Regular(q_tree), 1); |
---|
| 914 | if (d_ref == 0) |
---|
| 915 | SynthFreeMlTree(MlTree_Regular(d_tree), 1); |
---|
| 916 | return(NULL); |
---|
| 917 | } |
---|
| 918 | if (m_ref == 0) { |
---|
| 919 | m_tree->q = q_tree; |
---|
| 920 | m_tree->d = d_tree; |
---|
| 921 | m_tree->r = (MlTree *)NULL; |
---|
| 922 | if (comp_q_tree) |
---|
| 923 | m_tree->q_comp = 1; |
---|
| 924 | if (comp_d_tree) |
---|
| 925 | m_tree->d_comp = 1; |
---|
| 926 | m_tree->q_ref = q_ref; |
---|
| 927 | m_tree->d_ref = d_ref; |
---|
| 928 | m_tree->r_ref = 0; |
---|
| 929 | |
---|
| 930 | tmp_tree = m_tree; |
---|
| 931 | m_tree = SynthCheckAndMakeComplement(dd, table, m_tree, &comp_flag, |
---|
| 932 | verbosity); |
---|
| 933 | if (!m_tree) { |
---|
| 934 | if (comp_q_tree != q_tree) |
---|
| 935 | bdd_recursive_deref_zdd(dd, q_tree->node); |
---|
| 936 | if (comp_d_tree != d_tree) |
---|
| 937 | bdd_recursive_deref_zdd(dd, d_tree->node); |
---|
| 938 | if (q_ref == 0) |
---|
| 939 | SynthFreeMlTree(MlTree_Regular(q_tree), 1); |
---|
| 940 | if (d_ref == 0) |
---|
| 941 | SynthFreeMlTree(MlTree_Regular(d_tree), 1); |
---|
| 942 | return(NULL); |
---|
| 943 | } else if (m_tree == tmp_tree) |
---|
| 944 | SynthPutMlTreeInList(dd, m_tree, 1); |
---|
| 945 | else { |
---|
| 946 | if (m_tree->candidate) |
---|
| 947 | SynthPutMlTreeInList(dd, m_tree, 1); |
---|
| 948 | else |
---|
| 949 | m_tree = NIL(MlTree); |
---|
| 950 | } |
---|
| 951 | if (m_tree && VerifyTreeMode) { |
---|
| 952 | SynthVerifyTree(dd, m_tree, 0); |
---|
| 953 | SynthVerifyMlTable(dd, table); |
---|
| 954 | } |
---|
| 955 | } |
---|
| 956 | } |
---|
| 957 | |
---|
| 958 | if (verbosity > 1) |
---|
| 959 | (void)fprintf(vis_stdout,"%s[%d] remainder\n", space, level); |
---|
| 960 | r_tree_exist = 0; |
---|
| 961 | if (r_tree) { |
---|
| 962 | r_ref = 1; |
---|
| 963 | r_tree_exist = 1; |
---|
| 964 | } else if (comp_r_tree) { |
---|
| 965 | r_tree = comp_r_tree; |
---|
| 966 | r_ref = 1; |
---|
| 967 | if (verbosity > 1) { |
---|
| 968 | sprintf(comp_mess, "%s\t(C) : ", space); |
---|
| 969 | SynthPrintZddTreeMessage(dd, r, comp_mess); |
---|
| 970 | } |
---|
| 971 | } else if (comp_d_tree) { |
---|
| 972 | r_tree = (* factoring_func)(dd, table, r, level + 1, |
---|
| 973 | &r_ref, NULL, 0, NULL, verbosity); |
---|
| 974 | if (!r_tree) { |
---|
| 975 | if (comp_q_tree != q_tree) |
---|
| 976 | bdd_recursive_deref_zdd(dd, q_tree->node); |
---|
| 977 | if (comp_d_tree != d_tree) |
---|
| 978 | bdd_recursive_deref_zdd(dd, d_tree->node); |
---|
| 979 | if (q_ref == 0) |
---|
| 980 | SynthFreeMlTree(MlTree_Regular(q_tree), 1); |
---|
| 981 | if (d_ref == 0) |
---|
| 982 | SynthFreeMlTree(MlTree_Regular(d_tree), 1); |
---|
| 983 | if (m_tree && m_ref == 0) |
---|
| 984 | SynthFreeMlTree(MlTree_Regular(m_tree), 1); |
---|
| 985 | return(NULL); |
---|
| 986 | } |
---|
| 987 | if (MlTree_IsComplement(r_tree)) { |
---|
| 988 | r_tree = MlTree_Regular(r_tree); |
---|
| 989 | comp_r_tree = r_tree; |
---|
| 990 | } else |
---|
| 991 | bdd_ref(r_tree->node); |
---|
| 992 | } else { |
---|
| 993 | if (Resubstitution) { |
---|
| 994 | r_tree = (* factoring_func)(dd, table, r, level + 1, |
---|
| 995 | &r_ref, d_tree, 1, NULL, verbosity); |
---|
| 996 | if (!r_tree && (bdd_read_reordered_field(dd) || noMemoryFlag == 1)) { |
---|
| 997 | if (comp_q_tree != q_tree) |
---|
| 998 | bdd_recursive_deref_zdd(dd, q_tree->node); |
---|
| 999 | if (comp_d_tree != d_tree) |
---|
| 1000 | bdd_recursive_deref_zdd(dd, d_tree->node); |
---|
| 1001 | if (q_ref == 0) |
---|
| 1002 | SynthFreeMlTree(MlTree_Regular(q_tree), 1); |
---|
| 1003 | if (d_ref == 0) |
---|
| 1004 | SynthFreeMlTree(MlTree_Regular(d_tree), 1); |
---|
| 1005 | if (m_tree && m_ref == 0) |
---|
| 1006 | SynthFreeMlTree(MlTree_Regular(m_tree), 1); |
---|
| 1007 | return(NULL); |
---|
| 1008 | } |
---|
| 1009 | } |
---|
| 1010 | if (!r_tree) { |
---|
| 1011 | r_tree = (* factoring_func)(dd, table, r, level + 1, |
---|
| 1012 | &r_ref, NULL, 0, NULL, verbosity); |
---|
| 1013 | if (!r_tree) { |
---|
| 1014 | if (comp_q_tree != q_tree) |
---|
| 1015 | bdd_recursive_deref_zdd(dd, q_tree->node); |
---|
| 1016 | if (comp_d_tree != d_tree) |
---|
| 1017 | bdd_recursive_deref_zdd(dd, d_tree->node); |
---|
| 1018 | if (q_ref == 0) |
---|
| 1019 | SynthFreeMlTree(MlTree_Regular(q_tree), 1); |
---|
| 1020 | if (d_ref == 0) |
---|
| 1021 | SynthFreeMlTree(MlTree_Regular(d_tree), 1); |
---|
| 1022 | if (m_tree && m_ref == 0) |
---|
| 1023 | SynthFreeMlTree(MlTree_Regular(m_tree), 1); |
---|
| 1024 | return(NULL); |
---|
| 1025 | } |
---|
| 1026 | } else { |
---|
| 1027 | if (r != one && r != zero) |
---|
| 1028 | SynthSetSharedFlag(dd, d_tree); |
---|
| 1029 | } |
---|
| 1030 | if (MlTree_IsComplement(r_tree)) { |
---|
| 1031 | r_tree = MlTree_Regular(r_tree); |
---|
| 1032 | comp_r_tree = r_tree; |
---|
| 1033 | } else |
---|
| 1034 | bdd_ref(r_tree->node); |
---|
| 1035 | } |
---|
| 1036 | if (RemainderComplement) { |
---|
| 1037 | tmp_tree = r_tree; |
---|
| 1038 | r_tree = SynthCheckAndMakeComplement(dd, table, r_tree, &comp_flag, |
---|
| 1039 | verbosity); |
---|
| 1040 | if (!r_tree) { |
---|
| 1041 | if (comp_q_tree != q_tree) |
---|
| 1042 | bdd_recursive_deref_zdd(dd, q_tree->node); |
---|
| 1043 | if (comp_d_tree != d_tree) |
---|
| 1044 | bdd_recursive_deref_zdd(dd, d_tree->node); |
---|
| 1045 | if (comp_r_tree != tmp_tree) |
---|
| 1046 | bdd_recursive_deref_zdd(dd, tmp_tree->node); |
---|
| 1047 | if (q_ref == 0) |
---|
| 1048 | SynthFreeMlTree(MlTree_Regular(q_tree), 1); |
---|
| 1049 | if (d_ref == 0) |
---|
| 1050 | SynthFreeMlTree(MlTree_Regular(d_tree), 1); |
---|
| 1051 | if (r_ref == 0) |
---|
| 1052 | SynthFreeMlTree(MlTree_Regular(tmp_tree), 1); |
---|
| 1053 | if (m_tree && m_ref == 0) |
---|
| 1054 | SynthFreeMlTree(MlTree_Regular(m_tree), 1); |
---|
| 1055 | return(NULL); |
---|
| 1056 | } else if (r_tree != tmp_tree) { |
---|
| 1057 | if (comp_flag) |
---|
| 1058 | comp_r_tree = r_tree; |
---|
| 1059 | r_ref = 1; |
---|
| 1060 | } |
---|
| 1061 | } |
---|
| 1062 | |
---|
| 1063 | if ((!q_tree_exist) && (!comp_q_tree)) |
---|
| 1064 | bdd_recursive_deref_zdd(dd, q_tree->node); |
---|
| 1065 | if ((!d_tree_exist) && (!comp_d_tree)) |
---|
| 1066 | bdd_recursive_deref_zdd(dd, d_tree->node); |
---|
| 1067 | if ((!r_tree_exist) && (!comp_r_tree)) |
---|
| 1068 | bdd_recursive_deref_zdd(dd, r_tree->node); |
---|
| 1069 | |
---|
| 1070 | if (bring) { |
---|
| 1071 | tree = bring; |
---|
| 1072 | tree->leaf = 0; |
---|
| 1073 | tree->q = q_tree; |
---|
| 1074 | tree->d = d_tree; |
---|
| 1075 | tree->r = r_tree; |
---|
| 1076 | if (comp_q_tree) |
---|
| 1077 | tree->q_comp = 1; |
---|
| 1078 | if (comp_d_tree) |
---|
| 1079 | tree->d_comp = 1; |
---|
| 1080 | if (comp_r_tree) |
---|
| 1081 | tree->r_comp = 1; |
---|
| 1082 | tree->q_ref = q_ref; |
---|
| 1083 | tree->d_ref = d_ref; |
---|
| 1084 | tree->r_ref = r_ref; |
---|
| 1085 | if (UseMtree && m_tree && m_ref == 0) { |
---|
| 1086 | MlTree_Regular(m_tree)->r = tree; |
---|
| 1087 | if (m_tree->r->id == 0) { |
---|
| 1088 | assert(0); |
---|
| 1089 | /* |
---|
| 1090 | if (!SynthUseCandidate(table, dd, m_tree, verbosity)) { |
---|
| 1091 | SynthFreeMlTree(MlTree_Regular(m_tree), 1); |
---|
| 1092 | return(NULL); |
---|
| 1093 | } |
---|
| 1094 | */ |
---|
| 1095 | } |
---|
| 1096 | } |
---|
| 1097 | if (verbosity > 1) |
---|
| 1098 | SynthPrintMlTreeMessage(dd, tree, message); |
---|
| 1099 | if (VerifyTreeMode) { |
---|
| 1100 | SynthVerifyTree(dd, tree, 0); |
---|
| 1101 | SynthVerifyMlTable(dd, table); |
---|
| 1102 | } |
---|
| 1103 | return(tree); |
---|
| 1104 | } |
---|
| 1105 | |
---|
| 1106 | tree = SynthFindOrCreateMlTree(table, dd, f, 0, 0, ref, verbosity); |
---|
| 1107 | if (!tree) { |
---|
| 1108 | if (q_ref == 0) |
---|
| 1109 | SynthFreeMlTree(MlTree_Regular(q_tree), 1); |
---|
| 1110 | if (d_ref == 0) |
---|
| 1111 | SynthFreeMlTree(MlTree_Regular(d_tree), 1); |
---|
| 1112 | if (r_ref == 0) |
---|
| 1113 | SynthFreeMlTree(MlTree_Regular(r_tree), 1); |
---|
| 1114 | if (m_tree && m_ref == 0) |
---|
| 1115 | SynthFreeMlTree(MlTree_Regular(m_tree), 1); |
---|
| 1116 | return(NULL); |
---|
| 1117 | } |
---|
| 1118 | if (*ref == 1) |
---|
| 1119 | (void)fprintf(vis_stdout, "** synth warning: May be duplicate.\n"); |
---|
| 1120 | tree->q = q_tree; |
---|
| 1121 | tree->d = d_tree; |
---|
| 1122 | tree->r = r_tree; |
---|
| 1123 | if (comp_q_tree) |
---|
| 1124 | tree->q_comp = 1; |
---|
| 1125 | if (comp_d_tree) |
---|
| 1126 | tree->d_comp = 1; |
---|
| 1127 | if (comp_r_tree) |
---|
| 1128 | tree->r_comp = 1; |
---|
| 1129 | tree->q_ref = q_ref; |
---|
| 1130 | tree->d_ref = d_ref; |
---|
| 1131 | tree->r_ref = r_ref; |
---|
| 1132 | if (UseMtree && m_tree && m_ref == 0) { |
---|
| 1133 | MlTree_Regular(m_tree)->r = tree; |
---|
| 1134 | if (m_tree->r->id == 0) { |
---|
| 1135 | assert(0); |
---|
| 1136 | /* |
---|
| 1137 | if (!SynthUseCandidate(table, dd, m_tree, verbosity)) { |
---|
| 1138 | SynthFreeMlTree(MlTree_Regular(tree), 1); |
---|
| 1139 | SynthFreeMlTree(MlTree_Regular(m_tree), 1); |
---|
| 1140 | return(NULL); |
---|
| 1141 | } |
---|
| 1142 | */ |
---|
| 1143 | } |
---|
| 1144 | } |
---|
| 1145 | if (verbosity > 1) |
---|
| 1146 | SynthPrintMlTreeMessage(dd, tree, message); |
---|
| 1147 | SynthPutMlTreeInList(dd, tree, 0); |
---|
| 1148 | if (VerifyTreeMode) { |
---|
| 1149 | SynthVerifyTree(dd, tree, 0); |
---|
| 1150 | SynthVerifyMlTable(dd, table); |
---|
| 1151 | } |
---|
| 1152 | return(tree); |
---|
| 1153 | } |
---|
| 1154 | |
---|
| 1155 | |
---|
| 1156 | /*---------------------------------------------------------------------------*/ |
---|
| 1157 | /* Definition of static functions */ |
---|
| 1158 | /*---------------------------------------------------------------------------*/ |
---|
| 1159 | |
---|
| 1160 | /**Function******************************************************************** |
---|
| 1161 | |
---|
| 1162 | Synopsis [Counts the number of literals of a leaf node.] |
---|
| 1163 | |
---|
| 1164 | Description [Counts the number of literals of a leaf node.] |
---|
| 1165 | |
---|
| 1166 | SideEffects [] |
---|
| 1167 | |
---|
| 1168 | SeeAlso [] |
---|
| 1169 | |
---|
| 1170 | ******************************************************************************/ |
---|
| 1171 | static int |
---|
| 1172 | CountZddLeafLiterals(bdd_manager *dd, |
---|
| 1173 | bdd_node *node) |
---|
| 1174 | { |
---|
| 1175 | int i, *support; |
---|
| 1176 | int count = 0; |
---|
| 1177 | int sizeZ = bdd_num_zdd_vars(dd); |
---|
| 1178 | |
---|
| 1179 | support = ALLOC(int, sizeZ); |
---|
| 1180 | if (!support) |
---|
| 1181 | return(-1); |
---|
| 1182 | (void)memset((void *)support, 0, sizeof(int) * sizeZ); |
---|
| 1183 | SynthZddSupportStep(bdd_regular(node), support); |
---|
| 1184 | SynthZddClearFlag(bdd_regular(node)); |
---|
| 1185 | for (i = 0; i < sizeZ; i++) { |
---|
| 1186 | if (support[i]) |
---|
| 1187 | count++; |
---|
| 1188 | } |
---|
| 1189 | FREE(support); |
---|
| 1190 | return(count); |
---|
| 1191 | } |
---|