land David Blaikie's patch to de-constify Type, with a few tweaks.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135375 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/ScalarEvolutionExpander.cpp b/lib/Analysis/ScalarEvolutionExpander.cpp
index befe6d2..1904bdc 100644
--- a/lib/Analysis/ScalarEvolutionExpander.cpp
+++ b/lib/Analysis/ScalarEvolutionExpander.cpp
@@ -26,7 +26,7 @@
/// reusing an existing cast if a suitable one exists, moving an existing
/// cast if a suitable one exists but isn't in the right place, or
/// creating a new one.
-Value *SCEVExpander::ReuseOrCreateCast(Value *V, const Type *Ty,
+Value *SCEVExpander::ReuseOrCreateCast(Value *V, Type *Ty,
Instruction::CastOps Op,
BasicBlock::iterator IP) {
// Check to see if there is already a cast!
@@ -62,7 +62,7 @@
/// InsertNoopCastOfTo - Insert a cast of V to the specified type,
/// which must be possible with a noop cast, doing what we can to share
/// the casts.
-Value *SCEVExpander::InsertNoopCastOfTo(Value *V, const Type *Ty) {
+Value *SCEVExpander::InsertNoopCastOfTo(Value *V, Type *Ty) {
Instruction::CastOps Op = CastInst::getCastOpcode(V, false, Ty, false);
assert((Op == Instruction::BitCast ||
Op == Instruction::PtrToInt ||
@@ -277,7 +277,7 @@
/// the list.
///
static void SimplifyAddOperands(SmallVectorImpl<const SCEV *> &Ops,
- const Type *Ty,
+ Type *Ty,
ScalarEvolution &SE) {
unsigned NumAddRecs = 0;
for (unsigned i = Ops.size(); i > 0 && isa<SCEVAddRecExpr>(Ops[i-1]); --i)
@@ -306,7 +306,7 @@
/// into GEP indices.
///
static void SplitAddRecs(SmallVectorImpl<const SCEV *> &Ops,
- const Type *Ty,
+ Type *Ty,
ScalarEvolution &SE) {
// Find the addrecs.
SmallVector<const SCEV *, 8> AddRecs;
@@ -365,10 +365,10 @@
///
Value *SCEVExpander::expandAddToGEP(const SCEV *const *op_begin,
const SCEV *const *op_end,
- const PointerType *PTy,
- const Type *Ty,
+ PointerType *PTy,
+ Type *Ty,
Value *V) {
- const Type *ElTy = PTy->getElementType();
+ Type *ElTy = PTy->getElementType();
SmallVector<Value *, 4> GepIndices;
SmallVector<const SCEV *, 8> Ops(op_begin, op_end);
bool AnyNonZeroIndices = false;
@@ -423,7 +423,7 @@
GepIndices.push_back(Scaled);
// Collect struct field index operands.
- while (const StructType *STy = dyn_cast<StructType>(ElTy)) {
+ while (StructType *STy = dyn_cast<StructType>(ElTy)) {
bool FoundFieldNo = false;
// An empty struct has no fields.
if (STy->getNumElements() == 0) break;
@@ -451,7 +451,7 @@
// appropriate struct type.
for (unsigned i = 0, e = Ops.size(); i != e; ++i)
if (const SCEVUnknown *U = dyn_cast<SCEVUnknown>(Ops[i])) {
- const Type *CTy;
+ Type *CTy;
Constant *FieldNo;
if (U->isOffsetOf(CTy, FieldNo) && CTy == STy) {
GepIndices.push_back(FieldNo);
@@ -474,7 +474,7 @@
}
}
- if (const ArrayType *ATy = dyn_cast<ArrayType>(ElTy))
+ if (ArrayType *ATy = dyn_cast<ArrayType>(ElTy))
ElTy = ATy->getElementType();
else
break;
@@ -691,7 +691,7 @@
}
Value *SCEVExpander::visitAddExpr(const SCEVAddExpr *S) {
- const Type *Ty = SE.getEffectiveSCEVType(S->getType());
+ Type *Ty = SE.getEffectiveSCEVType(S->getType());
// Collect all the add operands in a loop, along with their associated loops.
// Iterate in reverse so that constants are emitted last, all else equal, and
@@ -717,7 +717,7 @@
// This is the first operand. Just expand it.
Sum = expand(Op);
++I;
- } else if (const PointerType *PTy = dyn_cast<PointerType>(Sum->getType())) {
+ } else if (PointerType *PTy = dyn_cast<PointerType>(Sum->getType())) {
// The running sum expression is a pointer. Try to form a getelementptr
// at this level with that as the base.
SmallVector<const SCEV *, 4> NewOps;
@@ -731,7 +731,7 @@
NewOps.push_back(X);
}
Sum = expandAddToGEP(NewOps.begin(), NewOps.end(), PTy, Ty, Sum);
- } else if (const PointerType *PTy = dyn_cast<PointerType>(Op->getType())) {
+ } else if (PointerType *PTy = dyn_cast<PointerType>(Op->getType())) {
// The running sum is an integer, and there's a pointer at this level.
// Try to form a getelementptr. If the running sum is instructions,
// use a SCEVUnknown to avoid re-analyzing them.
@@ -762,7 +762,7 @@
}
Value *SCEVExpander::visitMulExpr(const SCEVMulExpr *S) {
- const Type *Ty = SE.getEffectiveSCEVType(S->getType());
+ Type *Ty = SE.getEffectiveSCEVType(S->getType());
// Collect all the mul operands in a loop, along with their associated loops.
// Iterate in reverse so that constants are emitted last, all else equal.
@@ -804,7 +804,7 @@
}
Value *SCEVExpander::visitUDivExpr(const SCEVUDivExpr *S) {
- const Type *Ty = SE.getEffectiveSCEVType(S->getType());
+ Type *Ty = SE.getEffectiveSCEVType(S->getType());
Value *LHS = expandCodeFor(S->getLHS(), Ty);
if (const SCEVConstant *SC = dyn_cast<SCEVConstant>(S->getRHS())) {
@@ -847,8 +847,8 @@
PHINode *
SCEVExpander::getAddRecExprPHILiterally(const SCEVAddRecExpr *Normalized,
const Loop *L,
- const Type *ExpandTy,
- const Type *IntTy) {
+ Type *ExpandTy,
+ Type *IntTy) {
assert((!IVIncInsertLoop||IVIncInsertPos) && "Uninitialized insert position");
// Reuse a previously-inserted PHI, if present.
@@ -969,7 +969,7 @@
Value *IncV;
// If the PHI is a pointer, use a GEP, otherwise use an add or sub.
if (isPointer) {
- const PointerType *GEPPtrTy = cast<PointerType>(ExpandTy);
+ PointerType *GEPPtrTy = cast<PointerType>(ExpandTy);
// If the step isn't constant, don't use an implicitly scaled GEP, because
// that would require a multiply inside the loop.
if (!isa<ConstantInt>(StepV))
@@ -1001,8 +1001,8 @@
}
Value *SCEVExpander::expandAddRecExprLiterally(const SCEVAddRecExpr *S) {
- const Type *STy = S->getType();
- const Type *IntTy = SE.getEffectiveSCEVType(STy);
+ Type *STy = S->getType();
+ Type *IntTy = SE.getEffectiveSCEVType(STy);
const Loop *L = S->getLoop();
// Determine a normalized form of this expression, which is the expression
@@ -1045,7 +1045,7 @@
// Expand the core addrec. If we need post-loop scaling, force it to
// expand to an integer type to avoid the need for additional casting.
- const Type *ExpandTy = PostLoopScale ? IntTy : STy;
+ Type *ExpandTy = PostLoopScale ? IntTy : STy;
PHINode *PN = getAddRecExprPHILiterally(Normalized, L, ExpandTy, IntTy);
// Accommodate post-inc mode, if necessary.
@@ -1069,7 +1069,7 @@
// Re-apply any non-loop-dominating offset.
if (PostLoopOffset) {
- if (const PointerType *PTy = dyn_cast<PointerType>(ExpandTy)) {
+ if (PointerType *PTy = dyn_cast<PointerType>(ExpandTy)) {
const SCEV *const OffsetArray[1] = { PostLoopOffset };
Result = expandAddToGEP(OffsetArray, OffsetArray+1, PTy, IntTy, Result);
} else {
@@ -1086,7 +1086,7 @@
Value *SCEVExpander::visitAddRecExpr(const SCEVAddRecExpr *S) {
if (!CanonicalMode) return expandAddRecExprLiterally(S);
- const Type *Ty = SE.getEffectiveSCEVType(S->getType());
+ Type *Ty = SE.getEffectiveSCEVType(S->getType());
const Loop *L = S->getLoop();
// First check for an existing canonical IV in a suitable type.
@@ -1132,7 +1132,7 @@
// Dig into the expression to find the pointer base for a GEP.
ExposePointerBase(Base, RestArray[0], SE);
// If we found a pointer, expand the AddRec with a GEP.
- if (const PointerType *PTy = dyn_cast<PointerType>(Base->getType())) {
+ if (PointerType *PTy = dyn_cast<PointerType>(Base->getType())) {
// Make sure the Base isn't something exotic, such as a multiplied
// or divided pointer value. In those cases, the result type isn't
// actually a pointer type.
@@ -1216,7 +1216,7 @@
}
Value *SCEVExpander::visitTruncateExpr(const SCEVTruncateExpr *S) {
- const Type *Ty = SE.getEffectiveSCEVType(S->getType());
+ Type *Ty = SE.getEffectiveSCEVType(S->getType());
Value *V = expandCodeFor(S->getOperand(),
SE.getEffectiveSCEVType(S->getOperand()->getType()));
Value *I = Builder.CreateTrunc(V, Ty, "tmp");
@@ -1225,7 +1225,7 @@
}
Value *SCEVExpander::visitZeroExtendExpr(const SCEVZeroExtendExpr *S) {
- const Type *Ty = SE.getEffectiveSCEVType(S->getType());
+ Type *Ty = SE.getEffectiveSCEVType(S->getType());
Value *V = expandCodeFor(S->getOperand(),
SE.getEffectiveSCEVType(S->getOperand()->getType()));
Value *I = Builder.CreateZExt(V, Ty, "tmp");
@@ -1234,7 +1234,7 @@
}
Value *SCEVExpander::visitSignExtendExpr(const SCEVSignExtendExpr *S) {
- const Type *Ty = SE.getEffectiveSCEVType(S->getType());
+ Type *Ty = SE.getEffectiveSCEVType(S->getType());
Value *V = expandCodeFor(S->getOperand(),
SE.getEffectiveSCEVType(S->getOperand()->getType()));
Value *I = Builder.CreateSExt(V, Ty, "tmp");
@@ -1244,7 +1244,7 @@
Value *SCEVExpander::visitSMaxExpr(const SCEVSMaxExpr *S) {
Value *LHS = expand(S->getOperand(S->getNumOperands()-1));
- const Type *Ty = LHS->getType();
+ Type *Ty = LHS->getType();
for (int i = S->getNumOperands()-2; i >= 0; --i) {
// In the case of mixed integer and pointer types, do the
// rest of the comparisons as integer.
@@ -1268,7 +1268,7 @@
Value *SCEVExpander::visitUMaxExpr(const SCEVUMaxExpr *S) {
Value *LHS = expand(S->getOperand(S->getNumOperands()-1));
- const Type *Ty = LHS->getType();
+ Type *Ty = LHS->getType();
for (int i = S->getNumOperands()-2; i >= 0; --i) {
// In the case of mixed integer and pointer types, do the
// rest of the comparisons as integer.
@@ -1290,7 +1290,7 @@
return LHS;
}
-Value *SCEVExpander::expandCodeFor(const SCEV *SH, const Type *Ty,
+Value *SCEVExpander::expandCodeFor(const SCEV *SH, Type *Ty,
Instruction *I) {
BasicBlock::iterator IP = I;
while (isInsertedInstruction(IP) || isa<DbgInfoIntrinsic>(IP))
@@ -1299,7 +1299,7 @@
return expandCodeFor(SH, Ty);
}
-Value *SCEVExpander::expandCodeFor(const SCEV *SH, const Type *Ty) {
+Value *SCEVExpander::expandCodeFor(const SCEV *SH, Type *Ty) {
// Expand the code for this SCEV.
Value *V = expand(SH);
if (Ty) {
@@ -1384,7 +1384,7 @@
/// starts at zero and steps by one on each iteration.
PHINode *
SCEVExpander::getOrInsertCanonicalInductionVariable(const Loop *L,
- const Type *Ty) {
+ Type *Ty) {
assert(Ty->isIntegerTy() && "Can only insert integer induction variables!");
// Build a SCEV for {0,+,1}<L>.