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-rw-r--r--include/llvm/Analysis/ScalarEvolutionExpressions.h139
1 files changed, 51 insertions, 88 deletions
diff --git a/include/llvm/Analysis/ScalarEvolutionExpressions.h b/include/llvm/Analysis/ScalarEvolutionExpressions.h
index af1656ee8e..7fbeff7de0 100644
--- a/include/llvm/Analysis/ScalarEvolutionExpressions.h
+++ b/include/llvm/Analysis/ScalarEvolutionExpressions.h
@@ -32,16 +32,13 @@ namespace llvm {
/// SCEVConstant - This class represents a constant integer value.
///
class SCEVConstant : public SCEV {
+ friend class ScalarEvolution;
+
ConstantInt *V;
explicit SCEVConstant(ConstantInt *v) : SCEV(scConstant), V(v) {}
virtual ~SCEVConstant();
public:
- /// get method - This just gets and returns a new SCEVConstant object.
- ///
- static SCEVHandle get(ConstantInt *V);
- static SCEVHandle get(const APInt& Val);
-
ConstantInt *getValue() const { return V; }
/// getValueRange - Return the tightest constant bounds that this value is
@@ -59,7 +56,8 @@ namespace llvm {
virtual const Type *getType() const;
SCEVHandle replaceSymbolicValuesWithConcrete(const SCEVHandle &Sym,
- const SCEVHandle &Conc) const {
+ const SCEVHandle &Conc,
+ ScalarEvolution &SE) const {
return this;
}
@@ -78,15 +76,13 @@ namespace llvm {
/// to a smaller integer value.
///
class SCEVTruncateExpr : public SCEV {
+ friend class ScalarEvolution;
+
SCEVHandle Op;
const Type *Ty;
SCEVTruncateExpr(const SCEVHandle &op, const Type *ty);
virtual ~SCEVTruncateExpr();
public:
- /// get method - This just gets and returns a new SCEVTruncate object
- ///
- static SCEVHandle get(const SCEVHandle &Op, const Type *Ty);
-
const SCEVHandle &getOperand() const { return Op; }
virtual const Type *getType() const { return Ty; }
@@ -99,11 +95,12 @@ namespace llvm {
}
SCEVHandle replaceSymbolicValuesWithConcrete(const SCEVHandle &Sym,
- const SCEVHandle &Conc) const {
- SCEVHandle H = Op->replaceSymbolicValuesWithConcrete(Sym, Conc);
+ const SCEVHandle &Conc,
+ ScalarEvolution &SE) const {
+ SCEVHandle H = Op->replaceSymbolicValuesWithConcrete(Sym, Conc, SE);
if (H == Op)
return this;
- return get(H, Ty);
+ return SE.getTruncateExpr(H, Ty);
}
/// getValueRange - Return the tightest constant bounds that this value is
@@ -125,15 +122,13 @@ namespace llvm {
/// integer value to a larger integer value.
///
class SCEVZeroExtendExpr : public SCEV {
+ friend class ScalarEvolution;
+
SCEVHandle Op;
const Type *Ty;
SCEVZeroExtendExpr(const SCEVHandle &op, const Type *ty);
virtual ~SCEVZeroExtendExpr();
public:
- /// get method - This just gets and returns a new SCEVZeroExtend object
- ///
- static SCEVHandle get(const SCEVHandle &Op, const Type *Ty);
-
const SCEVHandle &getOperand() const { return Op; }
virtual const Type *getType() const { return Ty; }
@@ -150,11 +145,12 @@ namespace llvm {
virtual ConstantRange getValueRange() const;
SCEVHandle replaceSymbolicValuesWithConcrete(const SCEVHandle &Sym,
- const SCEVHandle &Conc) const {
- SCEVHandle H = Op->replaceSymbolicValuesWithConcrete(Sym, Conc);
+ const SCEVHandle &Conc,
+ ScalarEvolution &SE) const {
+ SCEVHandle H = Op->replaceSymbolicValuesWithConcrete(Sym, Conc, SE);
if (H == Op)
return this;
- return get(H, Ty);
+ return SE.getZeroExtendExpr(H, Ty);
}
virtual void print(std::ostream &OS) const;
@@ -172,15 +168,13 @@ namespace llvm {
/// integer value to a larger integer value.
///
class SCEVSignExtendExpr : public SCEV {
+ friend class ScalarEvolution;
+
SCEVHandle Op;
const Type *Ty;
SCEVSignExtendExpr(const SCEVHandle &op, const Type *ty);
virtual ~SCEVSignExtendExpr();
public:
- /// get method - This just gets and returns a new SCEVSignExtend object
- ///
- static SCEVHandle get(const SCEVHandle &Op, const Type *Ty);
-
const SCEVHandle &getOperand() const { return Op; }
virtual const Type *getType() const { return Ty; }
@@ -197,11 +191,12 @@ namespace llvm {
virtual ConstantRange getValueRange() const;
SCEVHandle replaceSymbolicValuesWithConcrete(const SCEVHandle &Sym,
- const SCEVHandle &Conc) const {
- SCEVHandle H = Op->replaceSymbolicValuesWithConcrete(Sym, Conc);
+ const SCEVHandle &Conc,
+ ScalarEvolution &SE) const {
+ SCEVHandle H = Op->replaceSymbolicValuesWithConcrete(Sym, Conc, SE);
if (H == Op)
return this;
- return get(H, Ty);
+ return SE.getSignExtendExpr(H, Ty);
}
virtual void print(std::ostream &OS) const;
@@ -220,6 +215,8 @@ namespace llvm {
/// operators.
///
class SCEVCommutativeExpr : public SCEV {
+ friend class ScalarEvolution;
+
std::vector<SCEVHandle> Operands;
protected:
@@ -264,7 +261,8 @@ namespace llvm {
}
SCEVHandle replaceSymbolicValuesWithConcrete(const SCEVHandle &Sym,
- const SCEVHandle &Conc) const;
+ const SCEVHandle &Conc,
+ ScalarEvolution &SE) const;
virtual const char *getOperationStr() const = 0;
@@ -285,29 +283,13 @@ namespace llvm {
/// SCEVAddExpr - This node represents an addition of some number of SCEVs.
///
class SCEVAddExpr : public SCEVCommutativeExpr {
+ friend class ScalarEvolution;
+
SCEVAddExpr(const std::vector<SCEVHandle> &ops)
: SCEVCommutativeExpr(scAddExpr, ops) {
}
public:
- static SCEVHandle get(std::vector<SCEVHandle> &Ops);
-
- static SCEVHandle get(const SCEVHandle &LHS, const SCEVHandle &RHS) {
- std::vector<SCEVHandle> Ops;
- Ops.push_back(LHS);
- Ops.push_back(RHS);
- return get(Ops);
- }
-
- static SCEVHandle get(const SCEVHandle &Op0, const SCEVHandle &Op1,
- const SCEVHandle &Op2) {
- std::vector<SCEVHandle> Ops;
- Ops.push_back(Op0);
- Ops.push_back(Op1);
- Ops.push_back(Op2);
- return get(Ops);
- }
-
virtual const char *getOperationStr() const { return " + "; }
/// Methods for support type inquiry through isa, cast, and dyn_cast:
@@ -321,20 +303,13 @@ namespace llvm {
/// SCEVMulExpr - This node represents multiplication of some number of SCEVs.
///
class SCEVMulExpr : public SCEVCommutativeExpr {
+ friend class ScalarEvolution;
+
SCEVMulExpr(const std::vector<SCEVHandle> &ops)
: SCEVCommutativeExpr(scMulExpr, ops) {
}
public:
- static SCEVHandle get(std::vector<SCEVHandle> &Ops);
-
- static SCEVHandle get(const SCEVHandle &LHS, const SCEVHandle &RHS) {
- std::vector<SCEVHandle> Ops;
- Ops.push_back(LHS);
- Ops.push_back(RHS);
- return get(Ops);
- }
-
virtual const char *getOperationStr() const { return " * "; }
/// Methods for support type inquiry through isa, cast, and dyn_cast:
@@ -349,16 +324,14 @@ namespace llvm {
/// SCEVSDivExpr - This class represents a binary signed division operation.
///
class SCEVSDivExpr : public SCEV {
+ friend class ScalarEvolution;
+
SCEVHandle LHS, RHS;
SCEVSDivExpr(const SCEVHandle &lhs, const SCEVHandle &rhs)
: SCEV(scSDivExpr), LHS(lhs), RHS(rhs) {}
virtual ~SCEVSDivExpr();
public:
- /// get method - This just gets and returns a new SCEVSDiv object.
- ///
- static SCEVHandle get(const SCEVHandle &LHS, const SCEVHandle &RHS);
-
const SCEVHandle &getLHS() const { return LHS; }
const SCEVHandle &getRHS() const { return RHS; }
@@ -372,13 +345,14 @@ namespace llvm {
}
SCEVHandle replaceSymbolicValuesWithConcrete(const SCEVHandle &Sym,
- const SCEVHandle &Conc) const {
- SCEVHandle L = LHS->replaceSymbolicValuesWithConcrete(Sym, Conc);
- SCEVHandle R = RHS->replaceSymbolicValuesWithConcrete(Sym, Conc);
+ const SCEVHandle &Conc,
+ ScalarEvolution &SE) const {
+ SCEVHandle L = LHS->replaceSymbolicValuesWithConcrete(Sym, Conc, SE);
+ SCEVHandle R = RHS->replaceSymbolicValuesWithConcrete(Sym, Conc, SE);
if (L == LHS && R == RHS)
return this;
else
- return get(L, R);
+ return SE.getSDivExpr(L, R);
}
@@ -402,6 +376,8 @@ namespace llvm {
/// All operands of an AddRec are required to be loop invariant.
///
class SCEVAddRecExpr : public SCEV {
+ friend class ScalarEvolution;
+
std::vector<SCEVHandle> Operands;
const Loop *L;
@@ -413,16 +389,6 @@ namespace llvm {
}
~SCEVAddRecExpr();
public:
- static SCEVHandle get(const SCEVHandle &Start, const SCEVHandle &Step,
- const Loop *);
- static SCEVHandle get(std::vector<SCEVHandle> &Operands,
- const Loop *);
- static SCEVHandle get(const std::vector<SCEVHandle> &Operands,
- const Loop *L) {
- std::vector<SCEVHandle> NewOp(Operands);
- return get(NewOp, L);
- }
-
typedef std::vector<SCEVHandle>::const_iterator op_iterator;
op_iterator op_begin() const { return Operands.begin(); }
op_iterator op_end() const { return Operands.end(); }
@@ -436,10 +402,10 @@ namespace llvm {
/// getStepRecurrence - This method constructs and returns the recurrence
/// indicating how much this expression steps by. If this is a polynomial
/// of degree N, it returns a chrec of degree N-1.
- SCEVHandle getStepRecurrence() const {
+ SCEVHandle getStepRecurrence(ScalarEvolution &SE) const {
if (getNumOperands() == 2) return getOperand(1);
- return SCEVAddRecExpr::get(std::vector<SCEVHandle>(op_begin()+1,op_end()),
- getLoop());
+ return SE.getAddRecExpr(std::vector<SCEVHandle>(op_begin()+1,op_end()),
+ getLoop());
}
virtual bool hasComputableLoopEvolution(const Loop *QL) const {
@@ -468,7 +434,7 @@ namespace llvm {
/// evaluateAtIteration - Return the value of this chain of recurrences at
/// the specified iteration number.
- SCEVHandle evaluateAtIteration(SCEVHandle It) const;
+ SCEVHandle evaluateAtIteration(SCEVHandle It, ScalarEvolution &SE) const;
/// getNumIterationsInRange - Return the number of iterations of this loop
/// that produce values in the specified constant range. Another way of
@@ -476,10 +442,12 @@ namespace llvm {
/// value is not in the condition, thus computing the exit count. If the
/// iteration count can't be computed, an instance of SCEVCouldNotCompute is
/// returned.
- SCEVHandle getNumIterationsInRange(ConstantRange Range) const;
+ SCEVHandle getNumIterationsInRange(ConstantRange Range,
+ ScalarEvolution &SE) const;
SCEVHandle replaceSymbolicValuesWithConcrete(const SCEVHandle &Sym,
- const SCEVHandle &Conc) const;
+ const SCEVHandle &Conc,
+ ScalarEvolution &SE) const;
virtual void print(std::ostream &OS) const;
void print(std::ostream *OS) const { if (OS) print(*OS); }
@@ -497,20 +465,14 @@ namespace llvm {
/// value for the analysis.
///
class SCEVUnknown : public SCEV {
+ friend class ScalarEvolution;
+
Value *V;
SCEVUnknown(Value *v) : SCEV(scUnknown), V(v) {}
protected:
~SCEVUnknown();
public:
- /// get method - For SCEVUnknown, this just gets and returns a new
- /// SCEVUnknown.
- static SCEVHandle get(Value *V);
-
- /// getIntegerSCEV - Given an integer or FP type, create a constant for the
- /// specified signed integer value and return a SCEV for the constant.
- static SCEVHandle getIntegerSCEV(int Val, const Type *Ty);
-
Value *getValue() const { return V; }
virtual bool isLoopInvariant(const Loop *L) const;
@@ -519,7 +481,8 @@ namespace llvm {
}
SCEVHandle replaceSymbolicValuesWithConcrete(const SCEVHandle &Sym,
- const SCEVHandle &Conc) const {
+ const SCEVHandle &Conc,
+ ScalarEvolution &SE) const {
if (&*Sym == this) return Conc;
return this;
}
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