LichenArrayRecovery.Mesa
Last tweaked by Mike Spreitzer on July 18, 1988 10:51:21 pm PDT
DIRECTORY AbSets, BasicTime, BiRels, IntStuff, IO, LichenArrayPrivate, LichenDataOps, LichenDataStructure, LichenIntBasics, Rope, SetBasics;
LichenArrayRecovery:
CEDAR
PROGRAM
IMPORTS AbSets, BasicTime, BiRels, IO, LichenArrayPrivate, LichenDataOps, LichenDataStructure, LichenIntBasics, Rope, SetBasics
=
BEGIN OPEN IS:IntStuff, Sets:AbSets, LIB:LichenIntBasics, LIB, LichenArrayPrivate, LichenDataStructure, LichenDataOps;
MinimizeArraysPeriod:
PROC [d: Design, cts: Set
--of CellType--, pacify:
IO.
STREAM]
RETURNS [report: Fn
--CellType
b period--] ~ {
PerCT:
PROC [ctv: Sets.Value]
RETURNS [
BOOL] ~ {
ct: CellType ~ NARROW[ctv.VA];
start: BasicTime.Pulses ~ BasicTime.GetClockPulses[];
IF pacify#NIL THEN pacify.PutRope[Describe[d, ct]];
{period: Int2 ~ MinimizeArrayPeriod[ct];
report.AddNewPair[[AV[ct], I2V[period]]];
IF pacify#
NIL
THEN {
end: BasicTime.Pulses ~ BasicTime.GetClockPulses[];
pacify.PutF[" %g\n", [real[BasicTime.PulsesToSeconds[end-start]]]]};
RETURN [FALSE]}};
report ← BiRels.CreateHashTable[[d.eSpace, int2s]];
IF cts.Scan[PerCT].found THEN ERROR;
RETURN};
MinimizeArrayPeriod:
PROC [act: CellType]
RETURNS [Int2] ~ {
d: Design ~ act.d;
a: Array ~ act.asArray;
sr: StatRep ~ a.statrep;
CheckDown:
PROC [sev: Sets.Value]
RETURNS [
BOOL] ~ {
se: StatEdge ~ NARROW[sev.VA];
sep: StatEdgeSpec ← se.SeSp[sr];
sep.vs[TRUE].phase ← SubMod[sep.vs[TRUE].phase, sep.vs[FALSE].phase, a.basePeriod];
sep.vs[FALSE].phase ← ALL[0];
IF FindStatEdge[sr, sep, FALSE].fse=NIL THEN RETURN [TRUE];
RETURN [FALSE]};
CheckUp:
PROC [sev: Sets.Value]
RETURNS [
BOOL] ~ {
se: StatEdge ~ NARROW[sev.VA];
sep: StatEdgeSpec ~ se.SeSp[sr];
IF sep.vs[
FALSE].phase =
ALL[0]
THEN {
FOR
f
x:
NAT
IN [0 .. a.basePeriod[X])
DO
FOR
f
y:
NAT
IN [0 .. a.basePeriod[Y])
DO
dsep: StatEdgeSpec ← sep;
dsep.vs[FALSE].phase ← [fx, fy];
dsep.vs[TRUE].phase ← AddMod[dsep.vs[TRUE].phase, [fx, fy], a.basePeriod];
IF FindStatEdge[sr, dsep, FALSE].fse=NIL THEN RETURN [TRUE];
ENDLOOP ENDLOOP;
};
RETURN [FALSE]};
ShiftDown:
PROC [sev: Sets.Value]
RETURNS [
BOOL] ~ {
se: StatEdge ~ NARROW[sev.VA];
sep: StatEdgeSpec ← se.SeSp[sr];
IF sep.vs[
FALSE].phase =
ALL[0]
THEN {
sep.vs[TRUE].phase ← ALL[0];
IF sr.svEdge[TRUE].AddPair[[SvV[sep.vs[TRUE]], AV[se]]].had[rightToLeft]=none THEN ERROR}
ELSE RemStatEdge[d, sr, sep];
RETURN [FALSE]};
IF a.basePeriod=ALL[1] THEN RETURN [ALL[1]];
IF sr.edges.Scan[CheckDown].found THEN RETURN [a.basePeriod];
IF sr.edges.Scan[CheckUp].found THEN RETURN [a.basePeriod];
IF a.
fXfm#nilBiRel
THEN {
xfms: Set ~ a.fXfm.SetOn[right];
qr: QuotRem ~ DivMod[a.offsets[0].o1, a.basePeriod];
IF xfms.NonTrivial OR qr.r#ALL[0] THEN RETURN [a.basePeriod];
FOR
f
x:
NAT
IN [0 .. a.basePeriod[X])
DO
FOR
f
y:
NAT
IN [0 .. a.basePeriod[Y])
DO
cf: NAT ~ ComposePhase[a, [fx, fy]];
IF a.offsets[cf].o1 # a.offsets[0].o1 THEN RETURN [a.basePeriod];
IF a.offsets[cf].o0 # Mul[qr.q, [fx, fy], a.offsets[0].o0] THEN RETURN [a.basePeriod];
ENDLOOP ENDLOOP;
{theXfm: Sets.Value ~ xfms.TheElt;
a.offsets ← OffsetsFromList[LIST[[a.offsets[0].o0, qr.q]]];
a.fXfm.Erase[];
a.fXfm.AddNewPair[[I2V[ALL[0]], theXfm]];
}};
IF sr.edges.Scan[ShiftDown].found THEN ERROR;
RETURN [a.basePeriod ← ALL[1]]};
SimilarizeArrays:
PROC [d: Design, acts: Set
--of CellType--] ~ {
ects: Set--of CellType-- ~ d.arrayElt.Image[acts];
SimilarizeGroup:
PROC [ectv: Sets.Value]
RETURNS [
BOOL] ~ {
ect: CellType ~ NARROW[ectv.VA];
allActs: Set ~ d.arrayElt.Mapping[ectv, rightToLeft].Intersection[acts];
keeps: Set--of act-- ~ Sets.CreateHashSet[d.eSpace];
TryAct:
PROC [actv: Sets.Value]
RETURNS [
BOOL] ~ {
act: CellType ~ NARROW[actv.VA];
TryExisting:
PROC [xctv: Sets.Value]
RETURNS [
BOOL] ~ {
xct: CellType ~ NARROW[xctv.VA];
equiv: BOOL;
assoc: OneToOne;
[equiv, assoc] ← StructurallyEquivalent[act, xct];
IF equiv
THEN {
MergeCellTypes[d, act, xct, assoc];
RETURN [TRUE]}
ELSE equiv ← equiv;
RETURN [FALSE]};
IF
NOT keeps.Scan[TryExisting].found
THEN {
IF NOT keeps.AddElt[actv] THEN ERROR;
};
RETURN [FALSE]};
IF allActs.Scan[TryAct].found THEN ERROR;
RETURN [FALSE]};
SimplifyNames:
PROC [ectv: Sets.Value]
RETURNS [
BOOL] ~ {
ect: CellType ~ NARROW[ectv.VA];
allActs: Set ~ d.arrayElt.Mapping[ectv, rightToLeft];
IF allActs.Trivial
THEN {
act: CellType ~ NARROW[allActs.AnElt.MA];
[] ← d.ctName.DeleteA[act];
[] ← d.ctName.AddAA[act, ect.ACtName[].Cat["-array"]]}
ELSE d ← d;
RETURN [FALSE]};
IF ects.Scan[SimilarizeGroup].found THEN ERROR;
IF ects.Scan[SimplifyNames].found THEN ERROR;
RETURN};
END.