luke
/
abc
mirror of https://github.com/YosysHQ/abc.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Experiments with retiming.

This commit is contained in:
Alan Mishchenko 2023-09-24 22:18:45 +08:00
parent 4d1618f600
commit 0f11580fce
1 changed files with 24 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

39
src/aig/gia/giaMini.c
View File

@ -1266,32 +1266,37 @@ Vec_Str_t * Gia_ManRetimableB( Gia_Man_t * p, int * pRst, int * pSet, int * pEna
{ {
Vec_Str_t * vStops = Vec_StrStart( Gia_ManObjNum(p) ); Vec_Str_t * vStops = Vec_StrStart( Gia_ManObjNum(p) );
Vec_Int_t * vTemps = Vec_IntStartFull( 3*Gia_ManObjNum(p) ); Vec_Int_t * vTemps = Vec_IntStartFull( 3*Gia_ManObjNum(p) );
Gia_Obj_t * pObj, * pObjRi, * pObjRo; int i, n; Gia_Obj_t * pObj, * pObjRi, * pObjRo; int i, n, iFanout;
char * pStops = Vec_StrArray(vStops); char * pStops = Vec_StrArray(vStops);
assert( Gia_ManRegNum(p) > 0 ); assert( Gia_ManRegNum(p) > 0 );
Gia_ManForEachRiRo( p, pObjRi, pObjRo, i ) { Gia_ManForEachRiRo( p, pObjRi, pObjRo, i ) {
Vec_IntWriteEntry( vTemps, 3*Gia_ObjFaninId0p(p, pObjRi) + 0, pRst[i] ); Vec_IntWriteEntry( vTemps, 3*Gia_ObjId(p, pObjRi) + 0, pRst[i] );
Vec_IntWriteEntry( vTemps, 3*Gia_ObjFaninId0p(p, pObjRi) + 1, pSet[i] ); Vec_IntWriteEntry( vTemps, 3*Gia_ObjId(p, pObjRi) + 1, pSet[i] );
Vec_IntWriteEntry( vTemps, 3*Gia_ObjFaninId0p(p, pObjRi) + 2, pEna[i] ); Vec_IntWriteEntry( vTemps, 3*Gia_ObjId(p, pObjRi) + 2, pEna[i] );
} }
Gia_ManStaticFanoutStart( p );
Gia_ManForEachAndReverse( p, pObj, i ) { Gia_ManForEachAndReverse( p, pObj, i ) {
int iFans[2] = { Gia_ObjFaninId0(pObj, i), Gia_ObjFaninId1(pObj, i) }; int * pFan0 = Vec_IntEntryP( vTemps, 3*Gia_ObjFanoutId(p, i, 0) );
int * pFans[2] = { Vec_IntEntryP( vTemps, 3*iFans[0] ), Vec_IntEntryP( vTemps, 3*iFans[1] ) };
int * pNode = Vec_IntEntryP( vTemps, 3*i ); int * pNode = Vec_IntEntryP( vTemps, 3*i );
if ( pNode[0] == -1 ) pStops[i] = (char)1;
if ( pFan0[0] == -1 )
continue; continue;
for ( n = 0; n < 2; n++ ) Gia_ObjForEachFanoutStaticId( p, i, iFanout, n ) {
if ( pFans[n][0] == -1 ) int * pFan1 = Vec_IntEntryP( vTemps, 3*iFanout );
pStops[iFans[n]] = (char)1, pFans[n][0] = pNode[0], pFans[n][1] = pNode[1], pFans[n][2] = pNode[2]; if ( pFan1[0] == -1 || pFan0[0] != pFan1[0] || pFan0[1] != pFan1[1] || pFan0[2] != pFan1[2] )
else if ( pFans[n][0] != pNode[0] || pFans[n][1] != pNode[1] || pFans[n][2] != pNode[2] ) break;
pStops[iFans[n]] = (char)0; }
if ( n < Gia_ObjFanoutNum(p, pObj) )
continue;
pStops[i] = (char)0, pNode[0] = pFan0[0], pNode[1] = pFan0[1], pNode[2] = pFan0[2];
} }
pStops[0] = (char)0; Gia_ManStaticFanoutStop( p );
Gia_ManForEachCi( p, pObj, i )
pStops[Gia_ObjId(p, pObj)] = (char)0;
Gia_ManForEachAnd( p, pObj, i )
pStops[i] = (char)!pStops[i];
Vec_IntFree( vTemps ); Vec_IntFree( vTemps );
Gia_ManForEachRiRo( p, pObjRi, pObjRo, i ) {
if ( Gia_ObjIsAnd(Gia_ManObj(p, Abc_Lit2Var(pRst[i]))) ) pStops[Abc_Lit2Var(pRst[i])] = 1;
if ( Gia_ObjIsAnd(Gia_ManObj(p, Abc_Lit2Var(pSet[i]))) ) pStops[Abc_Lit2Var(pSet[i])] = 1;
if ( Gia_ObjIsAnd(Gia_ManObj(p, Abc_Lit2Var(pEna[i]))) ) pStops[Abc_Lit2Var(pEna[i])] = 1;
}
return vStops; return vStops;
} }