//===----------------------------------------------------------------------===//
namespace {
- /// SCEVComplexityCompare - Return true if the complexity of the LHS is less
- /// than the complexity of the RHS. This comparator is used to canonicalize
- /// expressions.
- class SCEVComplexityCompare {
- const LoopInfo *const LI;
- public:
- explicit SCEVComplexityCompare(const LoopInfo *li) : LI(li) {}
-
- // Return true or false if LHS is less than, or at least RHS, respectively.
- bool operator()(const SCEV *LHS, const SCEV *RHS) const {
- return compare(LHS, RHS) < 0;
- }
-
- // Return negative, zero, or positive, if LHS is less than, equal to, or
- // greater than RHS, respectively. A three-way result allows recursive
- // comparisons to be more efficient.
- int compare(const SCEV *LHS, const SCEV *RHS) const {
- // Fast-path: SCEVs are uniqued so we can do a quick equality check.
- if (LHS == RHS)
- return 0;
-
- // Primarily, sort the SCEVs by their getSCEVType().
- unsigned LType = LHS->getSCEVType(), RType = RHS->getSCEVType();
- if (LType != RType)
- return (int)LType - (int)RType;
-
- // Aside from the getSCEVType() ordering, the particular ordering
- // isn't very important except that it's beneficial to be consistent,
- // so that (a + b) and (b + a) don't end up as different expressions.
- switch (static_cast<SCEVTypes>(LType)) {
- case scUnknown: {
- const SCEVUnknown *LU = cast<SCEVUnknown>(LHS);
- const SCEVUnknown *RU = cast<SCEVUnknown>(RHS);
-
- // Sort SCEVUnknown values with some loose heuristics. TODO: This is
- // not as complete as it could be.
- const Value *LV = LU->getValue(), *RV = RU->getValue();
-
- // Order pointer values after integer values. This helps SCEVExpander
- // form GEPs.
- bool LIsPointer = LV->getType()->isPointerTy(),
- RIsPointer = RV->getType()->isPointerTy();
- if (LIsPointer != RIsPointer)
- return (int)LIsPointer - (int)RIsPointer;
-
- // Compare getValueID values.
- unsigned LID = LV->getValueID(),
- RID = RV->getValueID();
- if (LID != RID)
- return (int)LID - (int)RID;
-
- // Sort arguments by their position.
- if (const Argument *LA = dyn_cast<Argument>(LV)) {
- const Argument *RA = cast<Argument>(RV);
- unsigned LArgNo = LA->getArgNo(), RArgNo = RA->getArgNo();
- return (int)LArgNo - (int)RArgNo;
- }
-
- // For instructions, compare their loop depth, and their operand
- // count. This is pretty loose.
- if (const Instruction *LInst = dyn_cast<Instruction>(LV)) {
- const Instruction *RInst = cast<Instruction>(RV);
-
- // Compare loop depths.
- const BasicBlock *LParent = LInst->getParent(),
- *RParent = RInst->getParent();
- if (LParent != RParent) {
- unsigned LDepth = LI->getLoopDepth(LParent),
- RDepth = LI->getLoopDepth(RParent);
- if (LDepth != RDepth)
- return (int)LDepth - (int)RDepth;
- }
-
- // Compare the number of operands.
- unsigned LNumOps = LInst->getNumOperands(),
- RNumOps = RInst->getNumOperands();
- return (int)LNumOps - (int)RNumOps;
- }
+/// SCEVComplexityCompare - Return true if the complexity of the LHS is less
+/// than the complexity of the RHS. This comparator is used to canonicalize
+/// expressions.
+class SCEVComplexityCompare {
+ const LoopInfo *const LI;
+public:
+ explicit SCEVComplexityCompare(const LoopInfo *li) : LI(li) {}
- return 0;
- }
+ // Return true or false if LHS is less than, or at least RHS, respectively.
+ bool operator()(const SCEV *LHS, const SCEV *RHS) const {
+ return compare(LHS, RHS) < 0;
+ }
- case scConstant: {
- const SCEVConstant *LC = cast<SCEVConstant>(LHS);
- const SCEVConstant *RC = cast<SCEVConstant>(RHS);
-
- // Compare constant values.
- const APInt &LA = LC->getValue()->getValue();
- const APInt &RA = RC->getValue()->getValue();
- unsigned LBitWidth = LA.getBitWidth(), RBitWidth = RA.getBitWidth();
- if (LBitWidth != RBitWidth)
- return (int)LBitWidth - (int)RBitWidth;
- return LA.ult(RA) ? -1 : 1;
+ // Return negative, zero, or positive, if LHS is less than, equal to, or
+ // greater than RHS, respectively. A three-way result allows recursive
+ // comparisons to be more efficient.
+ int compare(const SCEV *LHS, const SCEV *RHS) const {
+ // Fast-path: SCEVs are uniqued so we can do a quick equality check.
+ if (LHS == RHS)
+ return 0;
+
+ // Primarily, sort the SCEVs by their getSCEVType().
+ unsigned LType = LHS->getSCEVType(), RType = RHS->getSCEVType();
+ if (LType != RType)
+ return (int)LType - (int)RType;
+
+ // Aside from the getSCEVType() ordering, the particular ordering
+ // isn't very important except that it's beneficial to be consistent,
+ // so that (a + b) and (b + a) don't end up as different expressions.
+ switch (static_cast<SCEVTypes>(LType)) {
+ case scUnknown: {
+ const SCEVUnknown *LU = cast<SCEVUnknown>(LHS);
+ const SCEVUnknown *RU = cast<SCEVUnknown>(RHS);
+
+ // Sort SCEVUnknown values with some loose heuristics. TODO: This is
+ // not as complete as it could be.
+ const Value *LV = LU->getValue(), *RV = RU->getValue();
+
+ // Order pointer values after integer values. This helps SCEVExpander
+ // form GEPs.
+ bool LIsPointer = LV->getType()->isPointerTy(),
+ RIsPointer = RV->getType()->isPointerTy();
+ if (LIsPointer != RIsPointer)
+ return (int)LIsPointer - (int)RIsPointer;
+
+ // Compare getValueID values.
+ unsigned LID = LV->getValueID(),
+ RID = RV->getValueID();
+ if (LID != RID)
+ return (int)LID - (int)RID;
+
+ // Sort arguments by their position.
+ if (const Argument *LA = dyn_cast<Argument>(LV)) {
+ const Argument *RA = cast<Argument>(RV);
+ unsigned LArgNo = LA->getArgNo(), RArgNo = RA->getArgNo();
+ return (int)LArgNo - (int)RArgNo;
}
- case scAddRecExpr: {
- const SCEVAddRecExpr *LA = cast<SCEVAddRecExpr>(LHS);
- const SCEVAddRecExpr *RA = cast<SCEVAddRecExpr>(RHS);
-
- // Compare addrec loop depths.
- const Loop *LLoop = LA->getLoop(), *RLoop = RA->getLoop();
- if (LLoop != RLoop) {
- unsigned LDepth = LLoop->getLoopDepth(),
- RDepth = RLoop->getLoopDepth();
+ // For instructions, compare their loop depth, and their operand
+ // count. This is pretty loose.
+ if (const Instruction *LInst = dyn_cast<Instruction>(LV)) {
+ const Instruction *RInst = cast<Instruction>(RV);
+
+ // Compare loop depths.
+ const BasicBlock *LParent = LInst->getParent(),
+ *RParent = RInst->getParent();
+ if (LParent != RParent) {
+ unsigned LDepth = LI->getLoopDepth(LParent),
+ RDepth = LI->getLoopDepth(RParent);
if (LDepth != RDepth)
return (int)LDepth - (int)RDepth;
}
- // Addrec complexity grows with operand count.
- unsigned LNumOps = LA->getNumOperands(), RNumOps = RA->getNumOperands();
- if (LNumOps != RNumOps)
- return (int)LNumOps - (int)RNumOps;
+ // Compare the number of operands.
+ unsigned LNumOps = LInst->getNumOperands(),
+ RNumOps = RInst->getNumOperands();
+ return (int)LNumOps - (int)RNumOps;
+ }
+
+ return 0;
+ }
+
+ case scConstant: {
+ const SCEVConstant *LC = cast<SCEVConstant>(LHS);
+ const SCEVConstant *RC = cast<SCEVConstant>(RHS);
- // Lexicographically compare.
- for (unsigned i = 0; i != LNumOps; ++i) {
- long X = compare(LA->getOperand(i), RA->getOperand(i));
- if (X != 0)
- return X;
- }
+ // Compare constant values.
+ const APInt &LA = LC->getValue()->getValue();
+ const APInt &RA = RC->getValue()->getValue();
+ unsigned LBitWidth = LA.getBitWidth(), RBitWidth = RA.getBitWidth();
+ if (LBitWidth != RBitWidth)
+ return (int)LBitWidth - (int)RBitWidth;
+ return LA.ult(RA) ? -1 : 1;
+ }
+
+ case scAddRecExpr: {
+ const SCEVAddRecExpr *LA = cast<SCEVAddRecExpr>(LHS);
+ const SCEVAddRecExpr *RA = cast<SCEVAddRecExpr>(RHS);
- return 0;
+ // Compare addrec loop depths.
+ const Loop *LLoop = LA->getLoop(), *RLoop = RA->getLoop();
+ if (LLoop != RLoop) {
+ unsigned LDepth = LLoop->getLoopDepth(),
+ RDepth = RLoop->getLoopDepth();
+ if (LDepth != RDepth)
+ return (int)LDepth - (int)RDepth;
}
- case scAddExpr:
- case scMulExpr:
- case scSMaxExpr:
- case scUMaxExpr: {
- const SCEVNAryExpr *LC = cast<SCEVNAryExpr>(LHS);
- const SCEVNAryExpr *RC = cast<SCEVNAryExpr>(RHS);
-
- // Lexicographically compare n-ary expressions.
- unsigned LNumOps = LC->getNumOperands(), RNumOps = RC->getNumOperands();
- if (LNumOps != RNumOps)
- return (int)LNumOps - (int)RNumOps;
-
- for (unsigned i = 0; i != LNumOps; ++i) {
- if (i >= RNumOps)
- return 1;
- long X = compare(LC->getOperand(i), RC->getOperand(i));
- if (X != 0)
- return X;
- }
+ // Addrec complexity grows with operand count.
+ unsigned LNumOps = LA->getNumOperands(), RNumOps = RA->getNumOperands();
+ if (LNumOps != RNumOps)
return (int)LNumOps - (int)RNumOps;
+
+ // Lexicographically compare.
+ for (unsigned i = 0; i != LNumOps; ++i) {
+ long X = compare(LA->getOperand(i), RA->getOperand(i));
+ if (X != 0)
+ return X;
}
- case scUDivExpr: {
- const SCEVUDivExpr *LC = cast<SCEVUDivExpr>(LHS);
- const SCEVUDivExpr *RC = cast<SCEVUDivExpr>(RHS);
+ return 0;
+ }
- // Lexicographically compare udiv expressions.
- long X = compare(LC->getLHS(), RC->getLHS());
+ case scAddExpr:
+ case scMulExpr:
+ case scSMaxExpr:
+ case scUMaxExpr: {
+ const SCEVNAryExpr *LC = cast<SCEVNAryExpr>(LHS);
+ const SCEVNAryExpr *RC = cast<SCEVNAryExpr>(RHS);
+
+ // Lexicographically compare n-ary expressions.
+ unsigned LNumOps = LC->getNumOperands(), RNumOps = RC->getNumOperands();
+ if (LNumOps != RNumOps)
+ return (int)LNumOps - (int)RNumOps;
+
+ for (unsigned i = 0; i != LNumOps; ++i) {
+ if (i >= RNumOps)
+ return 1;
+ long X = compare(LC->getOperand(i), RC->getOperand(i));
if (X != 0)
return X;
- return compare(LC->getRHS(), RC->getRHS());
}
+ return (int)LNumOps - (int)RNumOps;
+ }
- case scTruncate:
- case scZeroExtend:
- case scSignExtend: {
- const SCEVCastExpr *LC = cast<SCEVCastExpr>(LHS);
- const SCEVCastExpr *RC = cast<SCEVCastExpr>(RHS);
+ case scUDivExpr: {
+ const SCEVUDivExpr *LC = cast<SCEVUDivExpr>(LHS);
+ const SCEVUDivExpr *RC = cast<SCEVUDivExpr>(RHS);
- // Compare cast expressions by operand.
- return compare(LC->getOperand(), RC->getOperand());
- }
+ // Lexicographically compare udiv expressions.
+ long X = compare(LC->getLHS(), RC->getLHS());
+ if (X != 0)
+ return X;
+ return compare(LC->getRHS(), RC->getRHS());
+ }
- case scCouldNotCompute:
- llvm_unreachable("Attempt to use a SCEVCouldNotCompute object!");
- }
- llvm_unreachable("Unknown SCEV kind!");
+ case scTruncate:
+ case scZeroExtend:
+ case scSignExtend: {
+ const SCEVCastExpr *LC = cast<SCEVCastExpr>(LHS);
+ const SCEVCastExpr *RC = cast<SCEVCastExpr>(RHS);
+
+ // Compare cast expressions by operand.
+ return compare(LC->getOperand(), RC->getOperand());
}
- };
-}
+
+ case scCouldNotCompute:
+ llvm_unreachable("Attempt to use a SCEVCouldNotCompute object!");
+ }
+ llvm_unreachable("Unknown SCEV kind!");
+ }
+};
+} // end anonymous namespace
/// GroupByComplexity - Given a list of SCEV objects, order them by their
/// complexity, and group objects of the same complexity together by value.
}
}
-namespace {
-struct FindSCEVSize {
- int Size;
- FindSCEVSize() : Size(0) {}
-
- bool follow(const SCEV *S) {
- ++Size;
- // Keep looking at all operands of S.
- return true;
- }
- bool isDone() const {
- return false;
- }
-};
-}
-
// Returns the size of the SCEV S.
static inline int sizeOfSCEV(const SCEV *S) {
+ struct FindSCEVSize {
+ int Size;
+ FindSCEVSize() : Size(0) {}
+
+ bool follow(const SCEV *S) {
+ ++Size;
+ // Keep looking at all operands of S.
+ return true;
+ }
+ bool isDone() const {
+ return false;
+ }
+ };
+
FindSCEVSize F;
SCEVTraversal<FindSCEVSize> ST(F);
ST.visitAll(S);
return Interesting;
}
-namespace {
- struct APIntCompare {
- bool operator()(const APInt &LHS, const APInt &RHS) const {
- return LHS.ult(RHS);
- }
- };
-}
-
// We're trying to construct a SCEV of type `Type' with `Ops' as operands and
// `OldFlags' as can't-wrap behavior. Infer a more aggressive set of
// can't-overflow flags for the operation if possible.
ScalarEvolution::maskFlags(Flags, SignOrUnsignMask);
// If FlagNSW is true and all the operands are non-negative, infer FlagNUW.
- auto IsKnownNonNegative =
- std::bind(std::mem_fn(&ScalarEvolution::isKnownNonNegative), SE, _1);
+ auto IsKnownNonNegative = [&](const SCEV *S) {
+ return SE->isKnownNonNegative(S);
+ };
if (SignOrUnsignWrap == SCEV::FlagNSW && all_of(Ops, IsKnownNonNegative))
Flags =
if (CollectAddOperandsWithScales(M, NewOps, AccumulatedConstant,
Ops.data(), Ops.size(),
APInt(BitWidth, 1), *this)) {
+ struct APIntCompare {
+ bool operator()(const APInt &LHS, const APInt &RHS) const {
+ return LHS.ult(RHS);
+ }
+ };
+
// Some interesting folding opportunity is present, so its worthwhile to
// re-generate the operands list. Group the operands by constant scale,
// to avoid multiplying by the same constant scale multiple times.
if (const SCEVAddExpr *Add = dyn_cast<SCEVAddExpr>(Ops[1])) {
SmallVector<const SCEV *, 4> NewOps;
bool AnyFolded = false;
- for (SCEVAddRecExpr::op_iterator I = Add->op_begin(),
- E = Add->op_end(); I != E; ++I) {
- const SCEV *Mul = getMulExpr(Ops[0], *I);
+ for (const SCEV *AddOp : Add->operands()) {
+ const SCEV *Mul = getMulExpr(Ops[0], AddOp);
if (!isa<SCEVMulExpr>(Mul)) AnyFolded = true;
NewOps.push_back(Mul);
}
} else if (const auto *AddRec = dyn_cast<SCEVAddRecExpr>(Ops[1])) {
// Negation preserves a recurrence's no self-wrap property.
SmallVector<const SCEV *, 4> Operands;
- for (SCEVAddRecExpr::op_iterator I = AddRec->op_begin(),
- E = AddRec->op_end(); I != E; ++I) {
- Operands.push_back(getMulExpr(Ops[0], *I));
- }
+ for (const SCEV *AddRecOp : AddRec->operands())
+ Operands.push_back(getMulExpr(Ops[0], AddRecOp));
+
return getAddRecExpr(Operands, AddRec->getLoop(),
AddRec->getNoWrapFlags(SCEV::FlagNW));
}
return CouldNotCompute.get();
}
-namespace {
+
+bool ScalarEvolution::checkValidity(const SCEV *S) const {
// Helper class working with SCEVTraversal to figure out if a SCEV contains
// a SCEVUnknown with null value-pointer. FindInvalidSCEVUnknown::FindOne
// is set iff if find such SCEVUnknown.
}
bool isDone() const { return FindOne; }
};
-}
-bool ScalarEvolution::checkValidity(const SCEV *S) const {
FindInvalidSCEVUnknown F;
SCEVTraversal<FindInvalidSCEVUnknown> ST(F);
ST.visitAll(S);
return getPointerBase(Cast->getOperand());
} else if (const SCEVNAryExpr *NAry = dyn_cast<SCEVNAryExpr>(V)) {
const SCEV *PtrOp = nullptr;
- for (SCEVNAryExpr::op_iterator I = NAry->op_begin(), E = NAry->op_end();
- I != E; ++I) {
- if ((*I)->getType()->isPointerTy()) {
+ for (const SCEV *NAryOp : NAry->operands()) {
+ if (NAryOp->getType()->isPointerTy()) {
// Cannot find the base of an expression with multiple pointer operands.
if (PtrOp)
return V;
- PtrOp = *I;
+ PtrOp = NAryOp;
}
}
if (!PtrOp)
// Otherwise, we can evaluate this instruction if all of its operands are
// constant or derived from a PHI node themselves.
PHINode *PHI = nullptr;
- for (Instruction::op_iterator OpI = UseInst->op_begin(),
- OpE = UseInst->op_end(); OpI != OpE; ++OpI) {
-
- if (isa<Constant>(*OpI)) continue;
+ for (Value *Op : UseInst->operands()) {
+ if (isa<Constant>(Op)) continue;
- Instruction *OpInst = dyn_cast<Instruction>(*OpI);
+ Instruction *OpInst = dyn_cast<Instruction>(Op);
if (!OpInst || !canConstantEvolve(OpInst, L)) return nullptr;
PHINode *P = dyn_cast<PHINode>(OpInst);
const MaxExprType *MaxExpr = dyn_cast<MaxExprType>(MaybeMaxExpr);
if (!MaxExpr) return false;
- auto It = std::find(MaxExpr->op_begin(), MaxExpr->op_end(), Candidate);
- return It != MaxExpr->op_end();
+ return find(MaxExpr->operands(), Candidate) != MaxExpr->op_end();
}
// The only time we can solve this is when we have all constant indices.
// Otherwise, we cannot determine the overflow conditions.
- if (std::any_of(op_begin(), op_end(),
- [](const SCEV *Op) { return !isa<SCEVConstant>(Op);}))
+ if (any_of(operands(), [](const SCEV *Op) { return !isa<SCEVConstant>(Op); }))
return SE.getCouldNotCompute();
// Okay at this point we know that all elements of the chrec are constants and
return true;
}
-namespace {
-struct FindParameter {
- bool FoundParameter;
- FindParameter() : FoundParameter(false) {}
-
- bool follow(const SCEV *S) {
- if (isa<SCEVUnknown>(S)) {
- FoundParameter = true;
- // Stop recursion: we found a parameter.
- return false;
- }
- // Keep looking.
- return true;
- }
- bool isDone() const {
- // Stop recursion if we have found a parameter.
- return FoundParameter;
- }
-};
-}
-
// Returns true when S contains at least a SCEVUnknown parameter.
static inline bool
containsParameters(const SCEV *S) {
+ struct FindParameter {
+ bool FoundParameter;
+ FindParameter() : FoundParameter(false) {}
+
+ bool follow(const SCEV *S) {
+ if (isa<SCEVUnknown>(S)) {
+ FoundParameter = true;
+ // Stop recursion: we found a parameter.
+ return false;
+ }
+ // Keep looking.
+ return true;
+ }
+ bool isDone() const {
+ // Stop recursion if we have found a parameter.
+ return FoundParameter;
+ }
+ };
+
FindParameter F;
SCEVTraversal<FindParameter> ST(F);
ST.visitAll(S);
case scSMaxExpr: {
const SCEVNAryExpr *NAry = cast<SCEVNAryExpr>(S);
bool Proper = true;
- for (SCEVNAryExpr::op_iterator I = NAry->op_begin(), E = NAry->op_end();
- I != E; ++I) {
- BlockDisposition D = getBlockDisposition(*I, BB);
+ for (const SCEV *NAryOp : NAry->operands()) {
+ BlockDisposition D = getBlockDisposition(NAryOp, BB);
if (D == DoesNotDominateBlock)
return DoesNotDominateBlock;
if (D == DominatesBlock)
return getBlockDisposition(S, BB) == ProperlyDominatesBlock;
}
-namespace {
-// Search for a SCEV expression node within an expression tree.
-// Implements SCEVTraversal::Visitor.
-struct SCEVSearch {
- const SCEV *Node;
- bool IsFound;
+bool ScalarEvolution::hasOperand(const SCEV *S, const SCEV *Op) const {
+ // Search for a SCEV expression node within an expression tree.
+ // Implements SCEVTraversal::Visitor.
+ struct SCEVSearch {
+ const SCEV *Node;
+ bool IsFound;
- SCEVSearch(const SCEV *N): Node(N), IsFound(false) {}
+ SCEVSearch(const SCEV *N): Node(N), IsFound(false) {}
- bool follow(const SCEV *S) {
- IsFound |= (S == Node);
- return !IsFound;
- }
- bool isDone() const { return IsFound; }
-};
-}
+ bool follow(const SCEV *S) {
+ IsFound |= (S == Node);
+ return !IsFound;
+ }
+ bool isDone() const { return IsFound; }
+ };
-bool ScalarEvolution::hasOperand(const SCEV *S, const SCEV *Op) const {
SCEVSearch Search(Op);
visitAll(S, Search);
return Search.IsFound;
SCEVPredicateKind Kind)
: FastID(ID), Kind(Kind) {}
+SCEVPredicate::~SCEVPredicate() {}
+
SCEVEqualPredicate::SCEVEqualPredicate(const FoldingSetNodeIDRef ID,
const SCEVUnknown *LHS,
const SCEVConstant *RHS)
return false;
auto &SCEVPreds = ScevPredsIt->second;
- return std::any_of(SCEVPreds.begin(), SCEVPreds.end(),
- [N](const SCEVPredicate *I) { return I->implies(N); });
+ return any_of(SCEVPreds,
+ [N](const SCEVPredicate *I) { return I->implies(N); });
}
const SCEV *SCEVUnionPredicate::getExpr() const { return nullptr; }
SCEVToPreds[Key].push_back(N);
Preds.push_back(N);
}
+
+PredicatedScalarEvolution::PredicatedScalarEvolution(ScalarEvolution &SE)
+ : SE(SE), Generation(0) {}
+
+const SCEV *PredicatedScalarEvolution::getSCEV(Value *V) {
+ const SCEV *Expr = SE.getSCEV(V);
+ RewriteEntry &Entry = RewriteMap[Expr];
+
+ // If we already have an entry and the version matches, return it.
+ if (Entry.second && Generation == Entry.first)
+ return Entry.second;
+
+ // We found an entry but it's stale. Rewrite the stale entry
+ // acording to the current predicate.
+ if (Entry.second)
+ Expr = Entry.second;
+
+ const SCEV *NewSCEV = SE.rewriteUsingPredicate(Expr, Preds);
+ Entry = {Generation, NewSCEV};
+
+ return NewSCEV;
+}
+
+void PredicatedScalarEvolution::addPredicate(const SCEVPredicate &Pred) {
+ if (Preds.implies(&Pred))
+ return;
+ Preds.add(&Pred);
+ updateGeneration();
+}
+
+const SCEVUnionPredicate &PredicatedScalarEvolution::getUnionPredicate() const {
+ return Preds;
+}
+
+void PredicatedScalarEvolution::updateGeneration() {
+ // If the generation number wrapped recompute everything.
+ if (++Generation == 0) {
+ for (auto &II : RewriteMap) {
+ const SCEV *Rewritten = II.second.second;
+ II.second = {Generation, SE.rewriteUsingPredicate(Rewritten, Preds)};
+ }
+ }
+}
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