1 | /**CFile*********************************************************************** |
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2 | |
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3 | FileName [baigBddSweep.c] |
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4 | |
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5 | PackageName [baig] |
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6 | |
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7 | Synopsis [Functions to find functional equivalent node index using bdd sweeping.] |
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8 | |
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9 | Author [HoonSang Jin] |
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10 | |
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11 | Copyright [ This file was created at the University of Colorado at |
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12 | Boulder. The University of Colorado at Boulder makes no warranty |
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13 | about the suitability of this software for any purpose. It is |
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14 | presented on an AS IS basis.] |
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15 | |
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16 | ******************************************************************************/ |
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17 | |
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18 | #include "maig.h" |
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19 | #include "ntk.h" |
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20 | #include "cmd.h" |
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21 | #include "baig.h" |
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22 | #include "baigInt.h" |
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23 | #include "heap.h" |
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24 | #include "ntmaig.h" |
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25 | #include "ord.h" |
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26 | |
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27 | static char rcsid[] UNUSED = "$Id: baigBddSweep.c,v 1.13 2005/05/18 18:11:42 jinh Exp $"; |
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28 | |
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29 | /*---------------------------------------------------------------------------*/ |
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30 | /* Constant declarations */ |
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31 | /*---------------------------------------------------------------------------*/ |
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32 | |
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33 | |
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34 | /*---------------------------------------------------------------------------*/ |
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35 | /* Stucture declarations */ |
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36 | /*---------------------------------------------------------------------------*/ |
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37 | |
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38 | |
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39 | /*---------------------------------------------------------------------------*/ |
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40 | /* Type declarations */ |
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41 | /*---------------------------------------------------------------------------*/ |
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42 | |
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43 | |
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44 | /*---------------------------------------------------------------------------*/ |
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45 | /* Variable declarations */ |
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46 | /*---------------------------------------------------------------------------*/ |
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47 | |
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48 | /*---------------------------------------------------------------------------*/ |
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49 | /* Macro declarations */ |
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50 | /*---------------------------------------------------------------------------*/ |
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51 | |
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52 | |
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53 | /**AutomaticStart*************************************************************/ |
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54 | |
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55 | /*---------------------------------------------------------------------------*/ |
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56 | /* Static function prototypes */ |
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57 | /*---------------------------------------------------------------------------*/ |
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58 | |
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59 | static int SweepBddCompare(const char *x, const char *y); |
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60 | static int SweepBddHash(char *x, int size); |
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61 | |
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62 | /**AutomaticEnd***************************************************************/ |
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63 | |
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64 | |
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65 | /*---------------------------------------------------------------------------*/ |
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66 | /* Definition of exported functions */ |
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67 | /*---------------------------------------------------------------------------*/ |
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68 | void bAig_BuildAigBFSManner( Ntk_Network_t *network, mAig_Manager_t *manager, st_table *leaves, int sweep); |
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69 | void bAig_BddSweepMain(Ntk_Network_t *network, array_t *nodeArray); |
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70 | void bAig_BddSweepForceMain(Ntk_Network_t *network, array_t *nodeArray); |
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71 | |
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72 | /**Function******************************************************************** |
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73 | |
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74 | Synopsis [Compare function for BDD sweeping] |
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75 | |
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76 | Description [Compare function for BDD sweeping] |
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77 | |
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78 | SideEffects [] |
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79 | |
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80 | SeeAlso [] |
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81 | |
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82 | ******************************************************************************/ |
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83 | static int |
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84 | SweepBddCompare(const char *x, const char *y) |
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85 | { |
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86 | return(bdd_ptrcmp((bdd_t *)x, (bdd_t *)y)); |
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87 | } |
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88 | |
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89 | /**Function******************************************************************** |
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90 | |
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91 | Synopsis [Hashing function for BDD sweeping] |
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92 | |
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93 | Description [Hashing function for BDD sweeping] |
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94 | |
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95 | SideEffects [] |
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96 | |
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97 | SeeAlso [] |
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98 | |
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99 | ******************************************************************************/ |
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100 | static int |
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101 | SweepBddHash(char *x, int size) |
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102 | { |
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103 | |
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104 | return(bdd_ptrhash((bdd_t *)x, size)); |
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105 | } |
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106 | |
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107 | /**Function******************************************************************** |
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108 | |
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109 | Synopsis [BDD sweeping for aig nodes] |
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110 | |
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111 | Description [BDD sweeping for aig nodes rooted at latch data inputs and |
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112 | primary outputs] |
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113 | |
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114 | SideEffects [] |
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115 | |
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116 | SeeAlso [] |
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117 | |
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118 | ******************************************************************************/ |
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119 | void |
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120 | bAig_BddSweepMain(Ntk_Network_t *network, array_t *nodeArray) |
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121 | { |
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122 | array_t *mVarList, *bVarList; |
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123 | bdd_t *bdd, *func; |
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124 | int bddIdIndex; |
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125 | int i, count, sizeLimit, mvfSize; |
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126 | int maxSize, curSize; |
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127 | array_t *tnodeArray; |
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128 | lsGen gen; |
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129 | st_generator *gen1; |
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130 | Ntk_Node_t *node; |
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131 | bAigEdge_t v; |
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132 | MvfAig_Function_t *mvfAig; |
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133 | mAig_Manager_t *manager; |
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134 | mdd_manager *mgr; |
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135 | st_table *node2MvfAigTable; |
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136 | st_table * bdd2vertex; |
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137 | mAigMvar_t mVar; |
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138 | mAigBvar_t bVar; |
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139 | int index1, mAigId; |
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140 | |
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141 | |
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142 | manager = Ntk_NetworkReadMAigManager(network); |
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143 | |
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144 | mgr = Ntk_NetworkReadMddManager(network); |
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145 | if(mgr == 0) { |
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146 | Ord_NetworkOrderVariables(network, Ord_RootsByDefault_c, |
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147 | Ord_NodesByDefault_c, FALSE, Ord_InputAndLatch_c, |
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148 | Ord_Unassigned_c, 0, 0); |
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149 | mgr = Ntk_NetworkReadMddManager(network); |
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150 | } |
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151 | node2MvfAigTable = |
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152 | (st_table *) Ntk_NetworkReadApplInfo(network, MVFAIG_NETWORK_APPL_KEY); |
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153 | |
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154 | bdd2vertex = st_init_table(SweepBddCompare, SweepBddHash); |
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155 | |
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156 | sizeLimit = 500; |
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157 | maxSize = manager->nodesArraySize; |
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158 | |
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159 | tnodeArray = 0; |
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160 | if(nodeArray == 0) { |
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161 | bVarList = mAigReadBinVarList(manager); |
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162 | mVarList = mAigReadMulVarList(manager); |
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163 | tnodeArray = array_alloc(bAigEdge_t, 0); |
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164 | Ntk_NetworkForEachLatch(network, gen, node) { |
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165 | node = Ntk_LatchReadDataInput(node); |
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166 | st_lookup(node2MvfAigTable, node, &mvfAig); |
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167 | mvfSize = array_n(mvfAig); |
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168 | for(i=0; i<mvfSize; i++){ |
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169 | v = bAig_GetCanonical(manager,MvfAig_FunctionReadComponent(mvfAig, i)); |
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170 | array_insert_last(bAigEdge_t, tnodeArray, v); |
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171 | } |
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172 | |
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173 | mAigId = Ntk_NodeReadMAigId(node); |
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174 | mVar = array_fetch(mAigMvar_t, mVarList, mAigId); |
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175 | for(i=0, index1=mVar.bVars; i<mVar.encodeLength; i++) { |
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176 | bVar = array_fetch(mAigBvar_t, bVarList, index1++); |
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177 | v = bVar.node; |
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178 | v = bAig_GetCanonical(manager, v); |
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179 | array_insert_last(bAigEdge_t, tnodeArray, v); |
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180 | } |
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181 | } |
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182 | Ntk_NetworkForEachPrimaryOutput(network, gen, node) { |
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183 | st_lookup(node2MvfAigTable, node, &mvfAig); |
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184 | mvfSize = array_n(mvfAig); |
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185 | for(i=0; i<mvfSize; i++){ |
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186 | v = bAig_GetCanonical(manager,MvfAig_FunctionReadComponent(mvfAig, i)); |
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187 | array_insert_last(bAigEdge_t, tnodeArray, v); |
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188 | } |
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189 | } |
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190 | } |
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191 | |
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192 | count = bAigNodeID(manager->nodesArraySize); |
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193 | for(i=0; i<count; i++) { |
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194 | manager->bddIdArray[i] = -1; |
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195 | manager->bddArray[i] = 0; |
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196 | } |
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197 | manager->bddArray[0] = bdd_zero(mgr); |
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198 | |
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199 | bddIdIndex = 0; |
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200 | for(i=bAigNodeSize; i<manager->nodesArraySize; i+=bAigNodeSize) { |
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201 | if(leftChild(i) != 2) continue; |
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202 | bdd = bdd_get_variable(mgr, bddIdIndex); |
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203 | manager->bddIdArray[bAigNodeID(i)] = bddIdIndex; |
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204 | manager->bddArray[bAigNodeID(i)] = bdd; |
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205 | bddIdIndex++; |
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206 | } |
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207 | |
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208 | if(nodeArray) { |
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209 | for(i=0; i<array_n(nodeArray); i++) { |
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210 | v = array_fetch(bAigEdge_t, nodeArray, i); |
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211 | v = bAig_GetCanonical(manager, v); |
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212 | bAig_BddSweepSub(manager, mgr, v, bdd2vertex, sizeLimit, &bddIdIndex); |
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213 | } |
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214 | } |
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215 | else { |
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216 | for(i=0; i<array_n(tnodeArray); i++) { |
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217 | v = array_fetch(bAigEdge_t, tnodeArray, i); |
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218 | v = bAig_GetCanonical(manager, v); |
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219 | bAig_BddSweepSub(manager, mgr, v, bdd2vertex, sizeLimit, &bddIdIndex); |
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220 | } |
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221 | array_free(tnodeArray); |
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222 | } |
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223 | |
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224 | count = bAigNodeID(manager->nodesArraySize); |
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225 | for(i=0; i<count; i++) { |
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226 | if(manager->bddArray[i]) { |
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227 | bdd_free(manager->bddArray[i]); |
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228 | manager->bddArray[i] = 0; |
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229 | } |
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230 | } |
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231 | |
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232 | st_foreach_item(bdd2vertex, gen1, &func, &v) { |
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233 | bdd_free(func); |
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234 | } |
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235 | st_free_table(bdd2vertex); |
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236 | |
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237 | count = bAigNodeID(manager->nodesArraySize); |
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238 | curSize = 0; |
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239 | for(i=0; i<count; i++) { |
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240 | if(bAigGetPassFlag(manager, i*bAigNodeSize)) { |
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241 | curSize++; |
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242 | } |
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243 | } |
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244 | /* |
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245 | fprintf(vis_stdout, "NOTICE : Before %d after %d used %d\n", |
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246 | maxSize/bAigNodeSize, count, (maxSize-curSize)/bAigNodeSize); |
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247 | fflush(vis_stdout); |
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248 | */ |
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249 | return; |
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250 | |
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251 | } |
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252 | |
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253 | /**Function******************************************************************** |
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254 | |
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255 | Synopsis [Auxiliary function for BDD sweeping] |
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256 | |
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257 | Description [Auxiliary function for BDD sweeping] |
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258 | |
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259 | SideEffects [] |
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260 | |
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261 | SeeAlso [] |
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262 | |
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263 | ******************************************************************************/ |
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264 | void |
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265 | bAig_BddSweepSub( |
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266 | bAig_Manager_t *manager, |
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267 | mdd_manager *mgr, |
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268 | bAigEdge_t v, |
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269 | st_table *bdd2vertex, |
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270 | int sizeLimit, |
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271 | int *newBddIdIndex) |
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272 | { |
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273 | bAigEdge_t left, right, oldV, nv; |
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274 | bdd_t *leftBdd, *rightBdd; |
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275 | bdd_t *func, *nfunc, *funcBar, *newBdd; |
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276 | int newId, size; |
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277 | |
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278 | if(v == 0 || v == 1) return; |
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279 | if(manager->bddArray[bAigNodeID(v)]) { |
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280 | return; |
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281 | } |
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282 | |
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283 | left = leftChild(v); |
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284 | right = rightChild(v); |
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285 | left = bAig_GetCanonical(manager, left); |
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286 | right = bAig_GetCanonical(manager, right); |
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287 | |
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288 | if(left == 2 && right == 2) { |
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289 | return; |
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290 | } |
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291 | |
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292 | bAig_BddSweepSub(manager, mgr, left, bdd2vertex, sizeLimit, newBddIdIndex); |
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293 | bAig_BddSweepSub(manager, mgr, right, bdd2vertex, sizeLimit, newBddIdIndex); |
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294 | |
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295 | v = bAig_GetCanonical(manager, v); |
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296 | if(manager->bddArray[bAigNodeID(v)]) { |
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297 | return; |
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298 | } |
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299 | |
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300 | left = leftChild(v); |
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301 | right = rightChild(v); |
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302 | left = bAig_GetCanonical(manager, left); |
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303 | right = bAig_GetCanonical(manager, right); |
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304 | |
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305 | leftBdd = manager->bddArray[bAigNodeID(left)]; |
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306 | rightBdd = manager->bddArray[bAigNodeID(right)]; |
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307 | |
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308 | if(leftBdd == 0) { |
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309 | bAig_BddSweepSub(manager, mgr, left, bdd2vertex, sizeLimit, newBddIdIndex); |
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310 | left = bAig_GetCanonical(manager, left); |
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311 | leftBdd = manager->bddArray[bAigNodeID(left)]; |
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312 | } |
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313 | |
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314 | if(rightBdd == 0) { |
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315 | bAig_BddSweepSub(manager, mgr, right, bdd2vertex, sizeLimit, newBddIdIndex); |
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316 | right = bAig_GetCanonical(manager, right); |
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317 | rightBdd = manager->bddArray[bAigNodeID(right)]; |
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318 | } |
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319 | |
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320 | /** |
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321 | bAig_VerifyBddArray(manager, leftBdd, left); |
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322 | bAig_VerifyBddArray(manager, rightBdd, right); |
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323 | **/ |
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324 | |
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325 | if(leftBdd == 0 || rightBdd == 0) { |
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326 | fprintf(vis_stdout, |
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327 | "ERROR : all the nodes should have bdd node at this moment\n"); |
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328 | } |
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329 | |
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330 | func = bdd_and(leftBdd, rightBdd, |
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331 | !bAig_IsInverted(left), !bAig_IsInverted(right)); |
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332 | |
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333 | if(bAig_IsInverted(v)) { |
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334 | funcBar = bdd_not(func); |
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335 | nfunc = funcBar; |
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336 | } |
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337 | else { |
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338 | nfunc = bdd_dup(func); |
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339 | } |
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340 | |
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341 | if(st_lookup(bdd2vertex, nfunc, &oldV)) { |
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342 | bAig_Merge(manager, oldV, v); |
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343 | } |
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344 | else { |
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345 | funcBar = bdd_not(nfunc); |
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346 | if(st_lookup(bdd2vertex, funcBar, &oldV)) { |
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347 | bAig_Merge(manager, bAig_Not(oldV), v); |
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348 | } |
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349 | bdd_free(funcBar); |
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350 | } |
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351 | bdd_free(nfunc); |
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352 | |
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353 | v = bAig_NonInvertedEdge(v); |
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354 | nv = bAig_GetCanonical(manager, v); |
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355 | v = nv; |
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356 | |
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357 | if(manager->bddArray[bAigNodeID(v)] == 0) { |
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358 | size = bdd_size(func); |
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359 | if(size > sizeLimit) { |
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360 | newId = *newBddIdIndex; |
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361 | (*newBddIdIndex) ++; |
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362 | newBdd = bdd_get_variable(mgr, newId); |
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363 | manager->bddIdArray[bAigNodeID(v)] = newId; |
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364 | bdd_free(func); |
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365 | func = newBdd; |
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366 | manager->bddArray[bAigNodeID(v)] = func; |
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367 | st_insert(bdd2vertex, (char *)bdd_dup(func), (char *)bAig_NonInvertedEdge(v)); |
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368 | } |
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369 | else { |
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370 | if(bAig_IsInverted(v)) { |
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371 | funcBar = bdd_not(func); |
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372 | manager->bddArray[bAigNodeID(v)] = funcBar; |
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373 | st_insert(bdd2vertex, (char *)func, (char *)v); |
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374 | } |
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375 | else { |
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376 | manager->bddArray[bAigNodeID(v)] = func; |
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377 | st_insert(bdd2vertex, (char *)bdd_dup(func), (char *)v); |
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378 | } |
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379 | } |
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380 | } |
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381 | else bdd_free(func); |
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382 | |
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383 | } |
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384 | |
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385 | /**Function******************************************************************** |
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386 | |
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387 | Synopsis [Build aig nodes in breath first manner] |
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388 | |
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389 | Description [Build aig nodes in breath first manner] |
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390 | |
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391 | SideEffects [] |
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392 | |
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393 | SeeAlso [] |
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394 | |
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395 | ******************************************************************************/ |
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396 | void |
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397 | bAig_BuildAigBFSManner( |
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398 | Ntk_Network_t *network, |
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399 | mAig_Manager_t *manager, |
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400 | st_table *leaves, |
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401 | int sweep) |
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402 | { |
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403 | array_t *nodeArray, *result; |
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404 | lsGen gen1; |
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405 | int iter, maxLevel, level; |
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406 | int i, j, k; |
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407 | bAigEdge_t v; |
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408 | Ntk_Node_t *node, *fanin, *fanout; |
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409 | st_table *node2mvfAigTable; |
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410 | array_t *curArray, *nextArray, *tmpArray; |
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411 | array_t *levelArray, *clevelArray; |
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412 | MvfAig_Function_t *mvfAig; |
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413 | int mvfSize; |
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414 | st_generator *gen; |
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415 | |
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416 | Ntk_NetworkForEachNode(network, gen1, node) { |
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417 | Ntk_NodeSetUndef(node, (void *)0); |
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418 | } |
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419 | |
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420 | curArray = array_alloc(Ntk_Node_t *, 0); |
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421 | st_foreach_item(leaves, gen, &node, &fanout) { |
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422 | array_insert_last(Ntk_Node_t *, curArray, node); |
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423 | Ntk_NodeSetUndef(node, (void *)1); |
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424 | } |
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425 | |
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426 | levelArray = array_alloc(array_t *, 10); |
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427 | nextArray = array_alloc(Ntk_Node_t *, 0); |
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428 | iter = 0; |
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429 | while(1) { |
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430 | clevelArray = array_alloc(array_t *, 10); |
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431 | array_insert_last(array_t *, levelArray, clevelArray); |
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432 | for(i=0; i<array_n(curArray); i++) { |
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433 | node = array_fetch(Ntk_Node_t *, curArray, i); |
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434 | Ntk_NodeForEachFanout(node, j, fanout) { |
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435 | |
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436 | level = (int)(long)Ntk_NodeReadUndef(fanout); |
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437 | if(level > 0) continue; |
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438 | |
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439 | maxLevel = 0; |
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440 | Ntk_NodeForEachFanin(fanout, k, fanin) { |
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441 | level = (int)(long)Ntk_NodeReadUndef(fanin); |
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442 | if(level == 0) { |
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443 | maxLevel = 0; |
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444 | break; |
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445 | } |
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446 | else if(level > maxLevel) { |
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447 | maxLevel = level; |
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448 | } |
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449 | } |
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450 | |
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451 | if(maxLevel > 0) { |
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452 | Ntk_NodeSetUndef(fanout, (void *)(long)(maxLevel+1)); |
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453 | array_insert_last(Ntk_Node_t *, nextArray, fanout); |
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454 | array_insert_last(Ntk_Node_t *, clevelArray, fanout); |
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455 | } |
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456 | } |
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457 | } |
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458 | |
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459 | curArray->num = 0; |
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460 | tmpArray = curArray; |
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461 | curArray = nextArray; |
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462 | nextArray = tmpArray; |
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463 | if(curArray->num == 0) break; |
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464 | |
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465 | iter++; |
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466 | } |
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467 | |
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468 | Ntk_NetworkForEachNode(network, gen1, node) { |
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469 | Ntk_NodeSetUndef(node, (void *)0); |
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470 | } |
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471 | |
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472 | for(i=0; i<array_n(levelArray); i++) { |
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473 | clevelArray = array_fetch(array_t *, levelArray, i); |
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474 | result = ntmaig_NetworkBuildMvfAigs(network, clevelArray, leaves); |
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475 | MvfAig_FunctionArrayFree(result); |
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476 | node2mvfAigTable = (st_table *) Ntk_NetworkReadApplInfo( |
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477 | network, MVFAIG_NETWORK_APPL_KEY); |
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478 | |
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479 | if(i < 50 && sweep) { |
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480 | nodeArray = array_alloc(bAigEdge_t, 0); |
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481 | for(j=0; j<array_n(clevelArray); j++) { |
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482 | node = array_fetch(Ntk_Node_t *, clevelArray, j); |
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483 | st_lookup(node2mvfAigTable, node, &mvfAig); |
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484 | mvfSize = array_n(mvfAig); |
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485 | for(k=0; k<mvfSize; k++){ |
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486 | v = bAig_GetCanonical(manager,MvfAig_FunctionReadComponent(mvfAig, k)); |
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487 | array_insert_last(bAigEdge_t, nodeArray, v); |
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488 | } |
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489 | } |
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490 | |
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491 | bAig_BddSweepForceMain(network, nodeArray); |
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492 | |
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493 | for(j=0; j<array_n(clevelArray); j++) { |
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494 | node = array_fetch(Ntk_Node_t *, clevelArray, j); |
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495 | st_lookup(node2mvfAigTable, node, &mvfAig); |
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496 | mvfSize = array_n(mvfAig); |
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497 | for(k=0; k<mvfSize; k++){ |
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498 | v = bAig_GetCanonical(manager,MvfAig_FunctionReadComponent(mvfAig, k)); |
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499 | array_insert(bAigEdge_t, nodeArray, v, k); |
---|
500 | } |
---|
501 | } |
---|
502 | array_free(nodeArray); |
---|
503 | } |
---|
504 | |
---|
505 | array_free(clevelArray); |
---|
506 | } |
---|
507 | array_free(levelArray); |
---|
508 | } |
---|
509 | |
---|
510 | |
---|
511 | /**Function******************************************************************** |
---|
512 | |
---|
513 | Synopsis [BDD sweeping ] |
---|
514 | |
---|
515 | Description [BDD sweeping ] |
---|
516 | |
---|
517 | SideEffects [] |
---|
518 | |
---|
519 | SeeAlso [] |
---|
520 | |
---|
521 | ******************************************************************************/ |
---|
522 | void |
---|
523 | bAig_BddSweepForceMain(Ntk_Network_t *network, array_t *nodeArray) |
---|
524 | { |
---|
525 | array_t *mVarList, *bVarList; |
---|
526 | bdd_t *bdd, *func; |
---|
527 | int bddIdIndex; |
---|
528 | int i, count, sizeLimit, mvfSize; |
---|
529 | int maxSize, curSize; |
---|
530 | array_t *tnodeArray; |
---|
531 | lsGen gen; |
---|
532 | st_generator *gen1; |
---|
533 | Ntk_Node_t *node; |
---|
534 | bAigEdge_t v; |
---|
535 | MvfAig_Function_t *mvfAig; |
---|
536 | mAig_Manager_t *manager; |
---|
537 | mdd_manager *mgr; |
---|
538 | st_table *node2MvfAigTable; |
---|
539 | st_table * bdd2vertex; |
---|
540 | mAigMvar_t mVar; |
---|
541 | mAigBvar_t bVar; |
---|
542 | int index1, mAigId; |
---|
543 | int newmask, resetNewmask; |
---|
544 | int usedAig; |
---|
545 | |
---|
546 | |
---|
547 | manager = Ntk_NetworkReadMAigManager(network); |
---|
548 | |
---|
549 | mgr = Ntk_NetworkReadMddManager(network); |
---|
550 | if(mgr == 0) { |
---|
551 | Ord_NetworkOrderVariables(network, Ord_RootsByDefault_c, |
---|
552 | Ord_NodesByDefault_c, FALSE, Ord_InputAndLatch_c, |
---|
553 | Ord_Unassigned_c, 0, 0); |
---|
554 | mgr = Ntk_NetworkReadMddManager(network); |
---|
555 | } |
---|
556 | node2MvfAigTable = |
---|
557 | (st_table *) Ntk_NetworkReadApplInfo(network, MVFAIG_NETWORK_APPL_KEY); |
---|
558 | |
---|
559 | bdd2vertex = st_init_table(SweepBddCompare, SweepBddHash); |
---|
560 | |
---|
561 | sizeLimit = 500; |
---|
562 | maxSize = manager->nodesArraySize; |
---|
563 | |
---|
564 | tnodeArray = 0; |
---|
565 | if(nodeArray == 0) { |
---|
566 | bVarList = mAigReadBinVarList(manager); |
---|
567 | mVarList = mAigReadMulVarList(manager); |
---|
568 | tnodeArray = array_alloc(bAigEdge_t, 0); |
---|
569 | Ntk_NetworkForEachLatch(network, gen, node) { |
---|
570 | node = Ntk_LatchReadDataInput(node); |
---|
571 | st_lookup(node2MvfAigTable, node, &mvfAig); |
---|
572 | mvfSize = array_n(mvfAig); |
---|
573 | for(i=0; i<mvfSize; i++){ |
---|
574 | v = bAig_GetCanonical(manager,MvfAig_FunctionReadComponent(mvfAig, i)); |
---|
575 | array_insert_last(bAigEdge_t, tnodeArray, v); |
---|
576 | } |
---|
577 | |
---|
578 | mAigId = Ntk_NodeReadMAigId(node); |
---|
579 | mVar = array_fetch(mAigMvar_t, mVarList, mAigId); |
---|
580 | for(i=0, index1=mVar.bVars; i<mVar.encodeLength; i++) { |
---|
581 | bVar = array_fetch(mAigBvar_t, bVarList, index1++); |
---|
582 | v = bVar.node; |
---|
583 | v = bAig_GetCanonical(manager, v); |
---|
584 | array_insert_last(bAigEdge_t, tnodeArray, v); |
---|
585 | } |
---|
586 | } |
---|
587 | Ntk_NetworkForEachPrimaryOutput(network, gen, node) { |
---|
588 | st_lookup(node2MvfAigTable, node, &mvfAig); |
---|
589 | mvfSize = array_n(mvfAig); |
---|
590 | for(i=0; i<mvfSize; i++){ |
---|
591 | v = bAig_GetCanonical(manager,MvfAig_FunctionReadComponent(mvfAig, i)); |
---|
592 | array_insert_last(bAigEdge_t, tnodeArray, v); |
---|
593 | } |
---|
594 | } |
---|
595 | } |
---|
596 | |
---|
597 | count = bAigNodeID(manager->nodesArraySize); |
---|
598 | for(i=0; i<count; i++) { |
---|
599 | manager->bddIdArray[i] = -1; |
---|
600 | manager->bddArray[i] = 0; |
---|
601 | } |
---|
602 | manager->bddArray[0] = bdd_zero(mgr); |
---|
603 | |
---|
604 | bddIdIndex = 0; |
---|
605 | for(i=bAigNodeSize; i<manager->nodesArraySize; i+=bAigNodeSize) { |
---|
606 | if(leftChild(i) != 2) continue; |
---|
607 | bdd = bdd_get_variable(mgr, bddIdIndex); |
---|
608 | manager->bddIdArray[bAigNodeID(i)] = bddIdIndex; |
---|
609 | manager->bddArray[bAigNodeID(i)] = bdd; |
---|
610 | bddIdIndex++; |
---|
611 | } |
---|
612 | |
---|
613 | if(nodeArray) { |
---|
614 | for(i=0; i<array_n(nodeArray); i++) { |
---|
615 | v = array_fetch(bAigEdge_t, nodeArray, i); |
---|
616 | v = bAig_GetCanonical(manager, v); |
---|
617 | bAig_BddSweepForceSub(manager, mgr, v, bdd2vertex, sizeLimit, &bddIdIndex); |
---|
618 | } |
---|
619 | } |
---|
620 | else { |
---|
621 | for(i=0; i<array_n(tnodeArray); i++) { |
---|
622 | v = array_fetch(bAigEdge_t, tnodeArray, i); |
---|
623 | v = bAig_GetCanonical(manager, v); |
---|
624 | bAig_BddSweepForceSub(manager, mgr, v, bdd2vertex, sizeLimit, &bddIdIndex); |
---|
625 | } |
---|
626 | } |
---|
627 | |
---|
628 | count = bAigNodeID(manager->nodesArraySize); |
---|
629 | for(i=0; i<count; i++) { |
---|
630 | if(manager->bddArray[i]) { |
---|
631 | bdd_free(manager->bddArray[i]); |
---|
632 | manager->bddArray[i] = 0; |
---|
633 | } |
---|
634 | } |
---|
635 | |
---|
636 | st_foreach_item(bdd2vertex, gen1, &func, &v) { |
---|
637 | bdd_free(func); |
---|
638 | } |
---|
639 | st_free_table(bdd2vertex); |
---|
640 | |
---|
641 | count = bAigNodeID(manager->nodesArraySize); |
---|
642 | curSize = 0; |
---|
643 | for(i=0; i<count; i++) { |
---|
644 | if(bAigGetPassFlag(manager, i*bAigNodeSize)) { |
---|
645 | curSize++; |
---|
646 | } |
---|
647 | } |
---|
648 | |
---|
649 | |
---|
650 | newmask = 0x00000100; |
---|
651 | resetNewmask = 0xfffffeff; |
---|
652 | if(tnodeArray) { |
---|
653 | for(i=0; i<array_n(tnodeArray); i++) { |
---|
654 | v = array_fetch(int, tnodeArray, i); |
---|
655 | bAig_SetMaskTransitiveFanin(manager, v, newmask); |
---|
656 | } |
---|
657 | |
---|
658 | usedAig = 0; |
---|
659 | for(i=bAigNodeSize; i<manager->nodesArraySize; i+=bAigNodeSize) { |
---|
660 | if(flags(i) & newmask) usedAig++; |
---|
661 | } |
---|
662 | |
---|
663 | for(i=0; i<array_n(tnodeArray); i++) { |
---|
664 | v = array_fetch(int, tnodeArray, i); |
---|
665 | bAig_ResetMaskTransitiveFanin(manager, v, newmask, resetNewmask); |
---|
666 | } |
---|
667 | array_free(tnodeArray); |
---|
668 | fprintf(vis_stdout, "NOTICE : Before %d after %d used %d\n", |
---|
669 | maxSize/bAigNodeSize, count, usedAig); |
---|
670 | fflush(vis_stdout); |
---|
671 | } |
---|
672 | |
---|
673 | } |
---|
674 | |
---|
675 | /**Function******************************************************************** |
---|
676 | |
---|
677 | Synopsis [Auxilary function BDD sweeping ] |
---|
678 | |
---|
679 | Description [Auxilary function BDD sweeping ] |
---|
680 | |
---|
681 | SideEffects [] |
---|
682 | |
---|
683 | SeeAlso [] |
---|
684 | |
---|
685 | ******************************************************************************/ |
---|
686 | void |
---|
687 | bAig_BddSweepForceSub( |
---|
688 | bAig_Manager_t *manager, |
---|
689 | mdd_manager *mgr, |
---|
690 | bAigEdge_t v, |
---|
691 | st_table *bdd2vertex, |
---|
692 | int sizeLimit, |
---|
693 | int *newBddIdIndex) |
---|
694 | { |
---|
695 | bAigEdge_t left, right, oldV, nv; |
---|
696 | bdd_t *leftBdd, *rightBdd; |
---|
697 | bdd_t *func, *nfunc, *funcBar, *newBdd; |
---|
698 | int newId, size; |
---|
699 | |
---|
700 | if(v == 0 || v == 1) return; |
---|
701 | if(manager->bddArray[bAigNodeID(v)]) { |
---|
702 | return; |
---|
703 | } |
---|
704 | |
---|
705 | |
---|
706 | left = leftChild(v); |
---|
707 | right = rightChild(v); |
---|
708 | left = bAig_GetCanonical(manager, left); |
---|
709 | right = bAig_GetCanonical(manager, right); |
---|
710 | |
---|
711 | if(left == 2 && right == 2) { |
---|
712 | return; |
---|
713 | } |
---|
714 | |
---|
715 | bAig_BddSweepForceSub(manager, mgr, left, bdd2vertex, sizeLimit, newBddIdIndex); |
---|
716 | bAig_BddSweepForceSub(manager, mgr, right, bdd2vertex, sizeLimit, newBddIdIndex); |
---|
717 | |
---|
718 | v = bAig_GetCanonical(manager, v); |
---|
719 | if(manager->bddArray[bAigNodeID(v)]) { |
---|
720 | return; |
---|
721 | } |
---|
722 | |
---|
723 | left = leftChild(v); |
---|
724 | right = rightChild(v); |
---|
725 | left = bAig_GetCanonical(manager, left); |
---|
726 | right = bAig_GetCanonical(manager, right); |
---|
727 | |
---|
728 | leftBdd = manager->bddArray[bAigNodeID(left)]; |
---|
729 | rightBdd = manager->bddArray[bAigNodeID(right)]; |
---|
730 | |
---|
731 | if(leftBdd == 0) { |
---|
732 | bAig_BddSweepForceSub(manager, mgr, left, bdd2vertex, sizeLimit, newBddIdIndex); |
---|
733 | left = bAig_GetCanonical(manager, left); |
---|
734 | leftBdd = manager->bddArray[bAigNodeID(left)]; |
---|
735 | } |
---|
736 | |
---|
737 | if(rightBdd == 0) { |
---|
738 | bAig_BddSweepForceSub(manager, mgr, right, bdd2vertex, sizeLimit, newBddIdIndex); |
---|
739 | right = bAig_GetCanonical(manager, right); |
---|
740 | rightBdd = manager->bddArray[bAigNodeID(right)]; |
---|
741 | } |
---|
742 | |
---|
743 | /** |
---|
744 | bAig_VerifyBddArray(manager, leftBdd, left); |
---|
745 | bAig_VerifyBddArray(manager, rightBdd, right); |
---|
746 | **/ |
---|
747 | |
---|
748 | if(leftBdd == 0 || rightBdd == 0) { |
---|
749 | fprintf(vis_stdout, |
---|
750 | "ERROR : all the nodes should have bdd node at this moment\n"); |
---|
751 | } |
---|
752 | |
---|
753 | func = bdd_and(leftBdd, rightBdd, |
---|
754 | !bAig_IsInverted(left), !bAig_IsInverted(right)); |
---|
755 | |
---|
756 | if(bAig_IsInverted(v)) { |
---|
757 | funcBar = bdd_not(func); |
---|
758 | nfunc = funcBar; |
---|
759 | } |
---|
760 | else { |
---|
761 | nfunc = bdd_dup(func); |
---|
762 | } |
---|
763 | |
---|
764 | if(st_lookup(bdd2vertex, nfunc, &oldV)) { |
---|
765 | bAig_Merge(manager, oldV, v); |
---|
766 | } |
---|
767 | else { |
---|
768 | funcBar = bdd_not(nfunc); |
---|
769 | if(st_lookup(bdd2vertex, funcBar, &oldV)) { |
---|
770 | bAig_Merge(manager, bAig_Not(oldV), v); |
---|
771 | } |
---|
772 | bdd_free(funcBar); |
---|
773 | } |
---|
774 | bdd_free(nfunc); |
---|
775 | |
---|
776 | v = bAig_NonInvertedEdge(v); |
---|
777 | nv = bAig_GetCanonical(manager, v); |
---|
778 | v = nv; |
---|
779 | |
---|
780 | if(manager->bddArray[bAigNodeID(v)] == 0) { |
---|
781 | size = bdd_size(func); |
---|
782 | if(size > sizeLimit) { |
---|
783 | newId = *newBddIdIndex; |
---|
784 | (*newBddIdIndex) ++; |
---|
785 | newBdd = bdd_get_variable(mgr, newId); |
---|
786 | manager->bddIdArray[bAigNodeID(v)] = newId; |
---|
787 | bdd_free(func); |
---|
788 | func = newBdd; |
---|
789 | manager->bddArray[bAigNodeID(v)] = func; |
---|
790 | st_insert(bdd2vertex, (char *)bdd_dup(func), (char *)bAig_NonInvertedEdge(v)); |
---|
791 | } |
---|
792 | else { |
---|
793 | if(bAig_IsInverted(v)) { |
---|
794 | funcBar = bdd_not(func); |
---|
795 | manager->bddArray[bAigNodeID(v)] = funcBar; |
---|
796 | st_insert(bdd2vertex, (char *)func, (char *)v); |
---|
797 | } |
---|
798 | else { |
---|
799 | manager->bddArray[bAigNodeID(v)] = func; |
---|
800 | st_insert(bdd2vertex, (char *)bdd_dup(func), (char *)v); |
---|
801 | } |
---|
802 | } |
---|
803 | } |
---|
804 | else bdd_free(func); |
---|
805 | |
---|
806 | return; |
---|
807 | } |
---|