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-rw-r--r--lib/Transforms/Scalar/IndVarSimplify.cpp6
-rw-r--r--lib/Transforms/Scalar/LoopStrengthReduce.cpp154
2 files changed, 83 insertions, 77 deletions
diff --git a/lib/Transforms/Scalar/IndVarSimplify.cpp b/lib/Transforms/Scalar/IndVarSimplify.cpp
index e1092b1..c745631 100644
--- a/lib/Transforms/Scalar/IndVarSimplify.cpp
+++ b/lib/Transforms/Scalar/IndVarSimplify.cpp
@@ -268,7 +268,7 @@ Instruction *IndVarSimplify::LinearFunctionTestReplace(Loop *L,
// backedge actually branches to the loop header. This is one less than the
// number of times the loop executes, so add one to it.
ConstantInt *OneC = ConstantInt::get(IterationCount->getType(), 1);
- TripCount = SCEVAddExpr::get(IterationCount, SCEVConstant::get(OneC));
+ TripCount = SE->getAddExpr(IterationCount, SE->getConstant(OneC));
IndVar = L->getCanonicalInductionVariableIncrement();
} else {
// We have to use the preincremented value...
@@ -524,9 +524,9 @@ bool IndVarSimplify::runOnLoop(Loop *L, LPPassManager &LPM) {
if (!isa<SCEVCouldNotCompute>(IterationCount)) {
if (IterationCount->getType()->getPrimitiveSizeInBits() <
LargestType->getPrimitiveSizeInBits())
- IterationCount = SCEVZeroExtendExpr::get(IterationCount, LargestType);
+ IterationCount = SE->getZeroExtendExpr(IterationCount, LargestType);
else if (IterationCount->getType() != LargestType)
- IterationCount = SCEVTruncateExpr::get(IterationCount, LargestType);
+ IterationCount = SE->getTruncateExpr(IterationCount, LargestType);
if (Instruction *DI = LinearFunctionTestReplace(L, IterationCount,Rewriter))
DeadInsts.insert(DI);
}
diff --git a/lib/Transforms/Scalar/LoopStrengthReduce.cpp b/lib/Transforms/Scalar/LoopStrengthReduce.cpp
index 08f023b..32d22ed 100644
--- a/lib/Transforms/Scalar/LoopStrengthReduce.cpp
+++ b/lib/Transforms/Scalar/LoopStrengthReduce.cpp
@@ -90,9 +90,6 @@ namespace {
PHINode *PHI;
Value *IncV;
- IVExpr()
- : Stride(SCEVUnknown::getIntegerSCEV(0, Type::Int32Ty)),
- Base (SCEVUnknown::getIntegerSCEV(0, Type::Int32Ty)) {}
IVExpr(const SCEVHandle &stride, const SCEVHandle &base, PHINode *phi,
Value *incv)
: Stride(stride), Base(base), PHI(phi), IncV(incv) {}
@@ -261,7 +258,7 @@ SCEVHandle LoopStrengthReduce::GetExpressionSCEV(Instruction *Exp, Loop *L) {
// Build up the base expression. Insert an LLVM cast of the pointer to
// uintptr_t first.
- SCEVHandle GEPVal = SCEVUnknown::get(
+ SCEVHandle GEPVal = SE->getUnknown(
getCastedVersionOf(Instruction::PtrToInt, GEP->getOperand(0)));
gep_type_iterator GTI = gep_type_begin(GEP);
@@ -274,8 +271,8 @@ SCEVHandle LoopStrengthReduce::GetExpressionSCEV(Instruction *Exp, Loop *L) {
const StructLayout *SL = TD->getStructLayout(STy);
unsigned Idx = cast<ConstantInt>(GEP->getOperand(i))->getZExtValue();
uint64_t Offset = SL->getElementOffset(Idx);
- GEPVal = SCEVAddExpr::get(GEPVal,
- SCEVUnknown::getIntegerSCEV(Offset, UIntPtrTy));
+ GEPVal = SE->getAddExpr(GEPVal,
+ SE->getIntegerSCEV(Offset, UIntPtrTy));
} else {
unsigned GEPOpiBits =
GEP->getOperand(i)->getType()->getPrimitiveSizeInBits();
@@ -288,10 +285,10 @@ SCEVHandle LoopStrengthReduce::GetExpressionSCEV(Instruction *Exp, Loop *L) {
uint64_t TypeSize = TD->getABITypeSize(GTI.getIndexedType());
if (TypeSize != 1)
- Idx = SCEVMulExpr::get(Idx,
- SCEVConstant::get(ConstantInt::get(UIntPtrTy,
- TypeSize)));
- GEPVal = SCEVAddExpr::get(GEPVal, Idx);
+ Idx = SE->getMulExpr(Idx,
+ SE->getConstant(ConstantInt::get(UIntPtrTy,
+ TypeSize)));
+ GEPVal = SE->getAddExpr(GEPVal, Idx);
}
}
@@ -304,7 +301,8 @@ SCEVHandle LoopStrengthReduce::GetExpressionSCEV(Instruction *Exp, Loop *L) {
/// is. The stride must be a loop invariant expression, but the start may be
/// a mix of loop invariant and loop variant expressions.
static bool getSCEVStartAndStride(const SCEVHandle &SH, Loop *L,
- SCEVHandle &Start, SCEVHandle &Stride) {
+ SCEVHandle &Start, SCEVHandle &Stride,
+ ScalarEvolution *SE) {
SCEVHandle TheAddRec = Start; // Initialize to zero.
// If the outer level is an AddExpr, the operands are all start values except
@@ -314,11 +312,11 @@ static bool getSCEVStartAndStride(const SCEVHandle &SH, Loop *L,
if (SCEVAddRecExpr *AddRec =
dyn_cast<SCEVAddRecExpr>(AE->getOperand(i))) {
if (AddRec->getLoop() == L)
- TheAddRec = SCEVAddExpr::get(AddRec, TheAddRec);
+ TheAddRec = SE->getAddExpr(AddRec, TheAddRec);
else
return false; // Nested IV of some sort?
} else {
- Start = SCEVAddExpr::get(Start, AE->getOperand(i));
+ Start = SE->getAddExpr(Start, AE->getOperand(i));
}
} else if (isa<SCEVAddRecExpr>(SH)) {
@@ -333,7 +331,7 @@ static bool getSCEVStartAndStride(const SCEVHandle &SH, Loop *L,
// FIXME: Generalize to non-affine IV's.
if (!AddRec->isAffine()) return false;
- Start = SCEVAddExpr::get(Start, AddRec->getOperand(0));
+ Start = SE->getAddExpr(Start, AddRec->getOperand(0));
if (!isa<SCEVConstant>(AddRec->getOperand(1)))
DOUT << "[" << L->getHeader()->getName()
@@ -414,9 +412,9 @@ bool LoopStrengthReduce::AddUsersIfInteresting(Instruction *I, Loop *L,
if (isa<SCEVCouldNotCompute>(ISE)) return false;
// Get the start and stride for this expression.
- SCEVHandle Start = SCEVUnknown::getIntegerSCEV(0, ISE->getType());
+ SCEVHandle Start = SE->getIntegerSCEV(0, ISE->getType());
SCEVHandle Stride = Start;
- if (!getSCEVStartAndStride(ISE, L, Start, Stride))
+ if (!getSCEVStartAndStride(ISE, L, Start, Stride, SE))
return false; // Non-reducible symbolic expression, bail out.
std::vector<Instruction *> IUsers;
@@ -458,7 +456,7 @@ bool LoopStrengthReduce::AddUsersIfInteresting(Instruction *I, Loop *L,
if (IVUseShouldUsePostIncValue(User, I, L, DT, this)) {
// The value used will be incremented by the stride more than we are
// expecting, so subtract this off.
- SCEVHandle NewStart = SCEV::getMinusSCEV(Start, Stride);
+ SCEVHandle NewStart = SE->getMinusSCEV(Start, Stride);
StrideUses.addUser(NewStart, User, I);
StrideUses.Users.back().isUseOfPostIncrementedValue = true;
DOUT << " USING POSTINC SCEV, START=" << *NewStart<< "\n";
@@ -474,6 +472,9 @@ namespace {
/// BasedUser - For a particular base value, keep information about how we've
/// partitioned the expression so far.
struct BasedUser {
+ /// SE - The current ScalarEvolution object.
+ ScalarEvolution *SE;
+
/// Base - The Base value for the PHI node that needs to be inserted for
/// this use. As the use is processed, information gets moved from this
/// field to the Imm field (below). BasedUser values are sorted by this
@@ -503,10 +504,10 @@ namespace {
// the loop.
bool isUseOfPostIncrementedValue;
- BasedUser(IVStrideUse &IVSU)
- : Base(IVSU.Offset), Inst(IVSU.User),
+ BasedUser(IVStrideUse &IVSU, ScalarEvolution *se)
+ : SE(se), Base(IVSU.Offset), Inst(IVSU.User),
OperandValToReplace(IVSU.OperandValToReplace),
- Imm(SCEVUnknown::getIntegerSCEV(0, Base->getType())), EmittedBase(0),
+ Imm(SE->getIntegerSCEV(0, Base->getType())), EmittedBase(0),
isUseOfPostIncrementedValue(IVSU.isUseOfPostIncrementedValue) {}
// Once we rewrite the code to insert the new IVs we want, update the
@@ -565,7 +566,7 @@ Value *BasedUser::InsertCodeForBaseAtPosition(const SCEVHandle &NewBase,
IP = Rewriter.getInsertionPoint();
// Always emit the immediate (if non-zero) into the same block as the user.
- SCEVHandle NewValSCEV = SCEVAddExpr::get(SCEVUnknown::get(Base), Imm);
+ SCEVHandle NewValSCEV = SE->getAddExpr(SE->getUnknown(Base), Imm);
return Rewriter.expandCodeFor(NewValSCEV, IP);
}
@@ -703,7 +704,7 @@ static bool isTargetConstant(const SCEVHandle &V, const Type *UseTy,
/// MoveLoopVariantsToImediateField - Move any subexpressions from Val that are
/// loop varying to the Imm operand.
static void MoveLoopVariantsToImediateField(SCEVHandle &Val, SCEVHandle &Imm,
- Loop *L) {
+ Loop *L, ScalarEvolution *SE) {
if (Val->isLoopInvariant(L)) return; // Nothing to do.
if (SCEVAddExpr *SAE = dyn_cast<SCEVAddExpr>(Val)) {
@@ -714,27 +715,27 @@ static void MoveLoopVariantsToImediateField(SCEVHandle &Val, SCEVHandle &Imm,
if (!SAE->getOperand(i)->isLoopInvariant(L)) {
// If this is a loop-variant expression, it must stay in the immediate
// field of the expression.
- Imm = SCEVAddExpr::get(Imm, SAE->getOperand(i));
+ Imm = SE->getAddExpr(Imm, SAE->getOperand(i));
} else {
NewOps.push_back(SAE->getOperand(i));
}
if (NewOps.empty())
- Val = SCEVUnknown::getIntegerSCEV(0, Val->getType());
+ Val = SE->getIntegerSCEV(0, Val->getType());
else
- Val = SCEVAddExpr::get(NewOps);
+ Val = SE->getAddExpr(NewOps);
} else if (SCEVAddRecExpr *SARE = dyn_cast<SCEVAddRecExpr>(Val)) {
// Try to pull immediates out of the start value of nested addrec's.
SCEVHandle Start = SARE->getStart();
- MoveLoopVariantsToImediateField(Start, Imm, L);
+ MoveLoopVariantsToImediateField(Start, Imm, L, SE);
std::vector<SCEVHandle> Ops(SARE->op_begin(), SARE->op_end());
Ops[0] = Start;
- Val = SCEVAddRecExpr::get(Ops, SARE->getLoop());
+ Val = SE->getAddRecExpr(Ops, SARE->getLoop());
} else {
// Otherwise, all of Val is variant, move the whole thing over.
- Imm = SCEVAddExpr::get(Imm, Val);
- Val = SCEVUnknown::getIntegerSCEV(0, Val->getType());
+ Imm = SE->getAddExpr(Imm, Val);
+ Val = SE->getIntegerSCEV(0, Val->getType());
}
}
@@ -745,7 +746,8 @@ static void MoveLoopVariantsToImediateField(SCEVHandle &Val, SCEVHandle &Imm,
static void MoveImmediateValues(const TargetLowering *TLI,
Instruction *User,
SCEVHandle &Val, SCEVHandle &Imm,
- bool isAddress, Loop *L) {
+ bool isAddress, Loop *L,
+ ScalarEvolution *SE) {
const Type *UseTy = User->getType();
if (StoreInst *SI = dyn_cast<StoreInst>(User))
UseTy = SI->getOperand(0)->getType();
@@ -756,31 +758,31 @@ static void MoveImmediateValues(const TargetLowering *TLI,
for (unsigned i = 0; i != SAE->getNumOperands(); ++i) {
SCEVHandle NewOp = SAE->getOperand(i);
- MoveImmediateValues(TLI, User, NewOp, Imm, isAddress, L);
+ MoveImmediateValues(TLI, User, NewOp, Imm, isAddress, L, SE);
if (!NewOp->isLoopInvariant(L)) {
// If this is a loop-variant expression, it must stay in the immediate
// field of the expression.
- Imm = SCEVAddExpr::get(Imm, NewOp);
+ Imm = SE->getAddExpr(Imm, NewOp);
} else {
NewOps.push_back(NewOp);
}
}
if (NewOps.empty())
- Val = SCEVUnknown::getIntegerSCEV(0, Val->getType());
+ Val = SE->getIntegerSCEV(0, Val->getType());
else
- Val = SCEVAddExpr::get(NewOps);
+ Val = SE->getAddExpr(NewOps);
return;
} else if (SCEVAddRecExpr *SARE = dyn_cast<SCEVAddRecExpr>(Val)) {
// Try to pull immediates out of the start value of nested addrec's.
SCEVHandle Start = SARE->getStart();
- MoveImmediateValues(TLI, User, Start, Imm, isAddress, L);
+ MoveImmediateValues(TLI, User, Start, Imm, isAddress, L, SE);
if (Start != SARE->getStart()) {
std::vector<SCEVHandle> Ops(SARE->op_begin(), SARE->op_end());
Ops[0] = Start;
- Val = SCEVAddRecExpr::get(Ops, SARE->getLoop());
+ Val = SE->getAddRecExpr(Ops, SARE->getLoop());
}
return;
} else if (SCEVMulExpr *SME = dyn_cast<SCEVMulExpr>(Val)) {
@@ -788,22 +790,22 @@ static void MoveImmediateValues(const TargetLowering *TLI,
if (isAddress && isTargetConstant(SME->getOperand(0), UseTy, TLI) &&
SME->getNumOperands() == 2 && SME->isLoopInvariant(L)) {
- SCEVHandle SubImm = SCEVUnknown::getIntegerSCEV(0, Val->getType());
+ SCEVHandle SubImm = SE->getIntegerSCEV(0, Val->getType());
SCEVHandle NewOp = SME->getOperand(1);
- MoveImmediateValues(TLI, User, NewOp, SubImm, isAddress, L);
+ MoveImmediateValues(TLI, User, NewOp, SubImm, isAddress, L, SE);
// If we extracted something out of the subexpressions, see if we can
// simplify this!
if (NewOp != SME->getOperand(1)) {
// Scale SubImm up by "8". If the result is a target constant, we are
// good.
- SubImm = SCEVMulExpr::get(SubImm, SME->getOperand(0));
+ SubImm = SE->getMulExpr(SubImm, SME->getOperand(0));
if (isTargetConstant(SubImm, UseTy, TLI)) {
// Accumulate the immediate.
- Imm = SCEVAddExpr::get(Imm, SubImm);
+ Imm = SE->getAddExpr(Imm, SubImm);
// Update what is left of 'Val'.
- Val = SCEVMulExpr::get(SME->getOperand(0), NewOp);
+ Val = SE->getMulExpr(SME->getOperand(0), NewOp);
return;
}
}
@@ -814,8 +816,8 @@ static void MoveImmediateValues(const TargetLowering *TLI,
// expression.
if ((isAddress && isTargetConstant(Val, UseTy, TLI)) ||
!Val->isLoopInvariant(L)) {
- Imm = SCEVAddExpr::get(Imm, Val);
- Val = SCEVUnknown::getIntegerSCEV(0, Val->getType());
+ Imm = SE->getAddExpr(Imm, Val);
+ Val = SE->getIntegerSCEV(0, Val->getType());
return;
}
@@ -827,22 +829,23 @@ static void MoveImmediateValues(const TargetLowering *TLI,
/// added together. This is used to reassociate common addition subexprs
/// together for maximal sharing when rewriting bases.
static void SeparateSubExprs(std::vector<SCEVHandle> &SubExprs,
- SCEVHandle Expr) {
+ SCEVHandle Expr,
+ ScalarEvolution *SE) {
if (SCEVAddExpr *AE = dyn_cast<SCEVAddExpr>(Expr)) {
for (unsigned j = 0, e = AE->getNumOperands(); j != e; ++j)
- SeparateSubExprs(SubExprs, AE->getOperand(j));
+ SeparateSubExprs(SubExprs, AE->getOperand(j), SE);
} else if (SCEVAddRecExpr *SARE = dyn_cast<SCEVAddRecExpr>(Expr)) {
- SCEVHandle Zero = SCEVUnknown::getIntegerSCEV(0, Expr->getType());
+ SCEVHandle Zero = SE->getIntegerSCEV(0, Expr->getType());
if (SARE->getOperand(0) == Zero) {
SubExprs.push_back(Expr);
} else {
// Compute the addrec with zero as its base.
std::vector<SCEVHandle> Ops(SARE->op_begin(), SARE->op_end());
Ops[0] = Zero; // Start with zero base.
- SubExprs.push_back(SCEVAddRecExpr::get(Ops, SARE->getLoop()));
+ SubExprs.push_back(SE->getAddRecExpr(Ops, SARE->getLoop()));
- SeparateSubExprs(SubExprs, SARE->getOperand(0));
+ SeparateSubExprs(SubExprs, SARE->getOperand(0), SE);
}
} else if (!isa<SCEVConstant>(Expr) ||
!cast<SCEVConstant>(Expr)->getValue()->isZero()) {
@@ -857,11 +860,12 @@ static void SeparateSubExprs(std::vector<SCEVHandle> &SubExprs,
/// removed, accumulated, and returned. This looks for things like (a+b+c) and
/// (a+c+d) -> (a+c). The common expression is *removed* from the Bases.
static SCEVHandle
-RemoveCommonExpressionsFromUseBases(std::vector<BasedUser> &Uses) {
+RemoveCommonExpressionsFromUseBases(std::vector<BasedUser> &Uses,
+ ScalarEvolution *SE) {
unsigned NumUses = Uses.size();
// Only one use? Use its base, regardless of what it is!
- SCEVHandle Zero = SCEVUnknown::getIntegerSCEV(0, Uses[0].Base->getType());
+ SCEVHandle Zero = SE->getIntegerSCEV(0, Uses[0].Base->getType());
SCEVHandle Result = Zero;
if (NumUses == 1) {
std::swap(Result, Uses[0].Base);
@@ -883,7 +887,7 @@ RemoveCommonExpressionsFromUseBases(std::vector<BasedUser> &Uses) {
if (Uses[i].Base == Zero) return Zero;
// Split the expression into subexprs.
- SeparateSubExprs(SubExprs, Uses[i].Base);
+ SeparateSubExprs(SubExprs, Uses[i].Base, SE);
// Add one to SubExpressionUseCounts for each subexpr present.
for (unsigned j = 0, e = SubExprs.size(); j != e; ++j)
if (++SubExpressionUseCounts[SubExprs[j]] == 1)
@@ -898,7 +902,7 @@ RemoveCommonExpressionsFromUseBases(std::vector<BasedUser> &Uses) {
SubExpressionUseCounts.find(UniqueSubExprs[i]);
assert(I != SubExpressionUseCounts.end() && "Entry not found?");
if (I->second == NumUses) { // Found CSE!
- Result = SCEVAddExpr::get(Result, I->first);
+ Result = SE->getAddExpr(Result, I->first);
} else {
// Remove non-cse's from SubExpressionUseCounts.
SubExpressionUseCounts.erase(I);
@@ -911,7 +915,7 @@ RemoveCommonExpressionsFromUseBases(std::vector<BasedUser> &Uses) {
// Otherwise, remove all of the CSE's we found from each of the base values.
for (unsigned i = 0; i != NumUses; ++i) {
// Split the expression into subexprs.
- SeparateSubExprs(SubExprs, Uses[i].Base);
+ SeparateSubExprs(SubExprs, Uses[i].Base, SE);
// Remove any common subexpressions.
for (unsigned j = 0, e = SubExprs.size(); j != e; ++j)
@@ -924,7 +928,7 @@ RemoveCommonExpressionsFromUseBases(std::vector<BasedUser> &Uses) {
if (SubExprs.empty())
Uses[i].Base = Zero;
else
- Uses[i].Base = SCEVAddExpr::get(SubExprs);
+ Uses[i].Base = SE->getAddExpr(SubExprs);
SubExprs.clear();
}
@@ -1037,13 +1041,13 @@ void LoopStrengthReduce::StrengthReduceStridedIVUsers(const SCEVHandle &Stride,
std::vector<BasedUser> UsersToProcess;
UsersToProcess.reserve(Uses.Users.size());
for (unsigned i = 0, e = Uses.Users.size(); i != e; ++i) {
- UsersToProcess.push_back(Uses.Users[i]);
+ UsersToProcess.push_back(BasedUser(Uses.Users[i], SE));
// Move any loop invariant operands from the offset field to the immediate
// field of the use, so that we don't try to use something before it is
// computed.
MoveLoopVariantsToImediateField(UsersToProcess.back().Base,
- UsersToProcess.back().Imm, L);
+ UsersToProcess.back().Imm, L, SE);
assert(UsersToProcess.back().Base->isLoopInvariant(L) &&
"Base value is not loop invariant!");
}
@@ -1056,7 +1060,7 @@ void LoopStrengthReduce::StrengthReduceStridedIVUsers(const SCEVHandle &Stride,
// "A+B"), emit it to the preheader, then remove the expression from the
// UsersToProcess base values.
SCEVHandle CommonExprs =
- RemoveCommonExpressionsFromUseBases(UsersToProcess);
+ RemoveCommonExpressionsFromUseBases(UsersToProcess, SE);
// Next, figure out what we can represent in the immediate fields of
// instructions. If we can represent anything there, move it to the imm
@@ -1067,10 +1071,10 @@ void LoopStrengthReduce::StrengthReduceStridedIVUsers(const SCEVHandle &Stride,
// value of the IV. Do not put anything in the base, make sure it's all in
// the immediate field to allow as much factoring as possible.
if (!L->contains(UsersToProcess[i].Inst->getParent())) {
- UsersToProcess[i].Imm = SCEVAddExpr::get(UsersToProcess[i].Imm,
- UsersToProcess[i].Base);
+ UsersToProcess[i].Imm = SE->getAddExpr(UsersToProcess[i].Imm,
+ UsersToProcess[i].Base);
UsersToProcess[i].Base =
- SCEVUnknown::getIntegerSCEV(0, UsersToProcess[i].Base->getType());
+ SE->getIntegerSCEV(0, UsersToProcess[i].Base->getType());
} else {
// Addressing modes can be folded into loads and stores. Be careful that
@@ -1088,7 +1092,7 @@ void LoopStrengthReduce::StrengthReduceStridedIVUsers(const SCEVHandle &Stride,
}
MoveImmediateValues(TLI, UsersToProcess[i].Inst, UsersToProcess[i].Base,
- UsersToProcess[i].Imm, isAddress, L);
+ UsersToProcess[i].Imm, isAddress, L, SE);
}
}
@@ -1098,7 +1102,9 @@ void LoopStrengthReduce::StrengthReduceStridedIVUsers(const SCEVHandle &Stride,
// instruction after this substition, including the immediate field, if any.
PHINode *NewPHI = NULL;
Value *IncV = NULL;
- IVExpr ReuseIV;
+ IVExpr ReuseIV(SE->getIntegerSCEV(0, Type::Int32Ty),
+ SE->getIntegerSCEV(0, Type::Int32Ty),
+ 0, 0);
unsigned RewriteFactor = CheckForIVReuse(Stride, ReuseIV,
CommonExprs->getType(),
UsersToProcess);
@@ -1143,7 +1149,7 @@ void LoopStrengthReduce::StrengthReduceStridedIVUsers(const SCEVHandle &Stride,
bool isNegative = isNonConstantNegative(Stride);
SCEVHandle IncAmount = Stride;
if (isNegative)
- IncAmount = SCEV::getNegativeSCEV(Stride);
+ IncAmount = SE->getNegativeSCEV(Stride);
// Insert the stride into the preheader.
Value *StrideV = PreheaderRewriter.expandCodeFor(IncAmount, PreInsertPt);
@@ -1151,10 +1157,10 @@ void LoopStrengthReduce::StrengthReduceStridedIVUsers(const SCEVHandle &Stride,
// Emit the increment of the base value before the terminator of the loop
// latch block, and add it to the Phi node.
- SCEVHandle IncExp = SCEVUnknown::get(StrideV);
+ SCEVHandle IncExp = SE->getUnknown(StrideV);
if (isNegative)
- IncExp = SCEV::getNegativeSCEV(IncExp);
- IncExp = SCEVAddExpr::get(SCEVUnknown::get(NewPHI), IncExp);
+ IncExp = SE->getNegativeSCEV(IncExp);
+ IncExp = SE->getAddExpr(SE->getUnknown(NewPHI), IncExp);
IncV = Rewriter.expandCodeFor(IncExp, LatchBlock->getTerminator());
IncV->setName(NewPHI->getName()+".inc");
@@ -1168,7 +1174,7 @@ void LoopStrengthReduce::StrengthReduceStridedIVUsers(const SCEVHandle &Stride,
Constant *C = dyn_cast<Constant>(CommonBaseV);
if (!C ||
(!C->isNullValue() &&
- !isTargetConstant(SCEVUnknown::get(CommonBaseV), ReplacedTy, TLI)))
+ !isTargetConstant(SE->getUnknown(CommonBaseV), ReplacedTy, TLI)))
// We want the common base emitted into the preheader! This is just
// using cast as a copy so BitCast (no-op cast) is appropriate
CommonBaseV = new BitCastInst(CommonBaseV, CommonBaseV->getType(),
@@ -1257,7 +1263,7 @@ void LoopStrengthReduce::StrengthReduceStridedIVUsers(const SCEVHandle &Stride,
RewriteOp = SCEVExpander::InsertCastOfTo(opcode, RewriteOp, ReplacedTy);
}
- SCEVHandle RewriteExpr = SCEVUnknown::get(RewriteOp);
+ SCEVHandle RewriteExpr = SE->getUnknown(RewriteOp);
// Clear the SCEVExpander's expression map so that we are guaranteed
// to have the code emitted where we expect it.
@@ -1267,8 +1273,8 @@ void LoopStrengthReduce::StrengthReduceStridedIVUsers(const SCEVHandle &Stride,
// factor take advantage of addressing mode scale component.
if (RewriteFactor != 0) {
RewriteExpr =
- SCEVMulExpr::get(SCEVUnknown::getIntegerSCEV(RewriteFactor,
- RewriteExpr->getType()),
+ SE->getMulExpr(SE->getIntegerSCEV(RewriteFactor,
+ RewriteExpr->getType()),
RewriteExpr);
// The common base is emitted in the loop preheader. But since we
@@ -1276,15 +1282,15 @@ void LoopStrengthReduce::StrengthReduceStridedIVUsers(const SCEVHandle &Stride,
// Add it to the expression used to rewrite the uses.
if (!isa<ConstantInt>(CommonBaseV) ||
!cast<ConstantInt>(CommonBaseV)->isZero())
- RewriteExpr = SCEVAddExpr::get(RewriteExpr,
- SCEVUnknown::get(CommonBaseV));
+ RewriteExpr = SE->getAddExpr(RewriteExpr,
+ SE->getUnknown(CommonBaseV));
}
// Now that we know what we need to do, insert code before User for the
// immediate and any loop-variant expressions.
if (!isa<ConstantInt>(BaseV) || !cast<ConstantInt>(BaseV)->isZero())
// Add BaseV to the PHI value if needed.
- RewriteExpr = SCEVAddExpr::get(RewriteExpr, SCEVUnknown::get(BaseV));
+ RewriteExpr = SE->getAddExpr(RewriteExpr, SE->getUnknown(BaseV));
User.RewriteInstructionToUseNewBase(RewriteExpr, Rewriter, L, this);
@@ -1380,7 +1386,7 @@ void LoopStrengthReduce::OptimizeIndvars(Loop *L) {
// If we get to here, we know that we can transform the setcc instruction to
// use the post-incremented version of the IV, allowing us to coalesce the
// live ranges for the IV correctly.
- CondUse->Offset = SCEV::getMinusSCEV(CondUse->Offset, *CondStride);
+ CondUse->Offset = SE->getMinusSCEV(CondUse->Offset, *CondStride);
CondUse->isUseOfPostIncrementedValue = true;
}
generated by cgit v1.1 at 2025-05-19 15:08:55 +0000