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Convert several parts of the ScalarEvolution framework to use

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SmallVector instead of std::vector.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73357 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2009-06-14 22:47:23 +00:00
parent ea73f3c2e1
commit a82752c9eb
5 changed files with 80 additions and 74 deletions
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lib/Analysis/ScalarEvolutionExpander.cpp
+9 -7
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@@ -182,7 +182,8 @@ static bool FactorOutConstant(SCEVHandle &S,
if (const SCEVMulExpr *M = dyn_cast<SCEVMulExpr>(S))
if (const SCEVConstant *C = dyn_cast<SCEVConstant>(M->getOperand(0)))
if (!C->getValue()->getValue().srem(Factor)) {
std::vector<SCEVHandle> NewMulOps(M->getOperands());
const SmallVectorImpl<SCEVHandle> &MOperands = M->getOperands();
SmallVector<SCEVHandle, 4> NewMulOps(MOperands.begin(), MOperands.end());
NewMulOps[0] =
SE.getConstant(C->getValue()->getValue().sdiv(Factor));
S = SE.getMulExpr(NewMulOps);
@@ -239,7 +240,7 @@ Value *SCEVExpander::expandAddToGEP(const SCEVHandle *op_begin,
Value *V) {
const Type *ElTy = PTy->getElementType();
SmallVector<Value *, 4> GepIndices;
std::vector<SCEVHandle> Ops(op_begin, op_end);
SmallVector<SCEVHandle, 8> Ops(op_begin, op_end);
bool AnyNonZeroIndices = false;
// Decend down the pointer's type and attempt to convert the other
@@ -250,8 +251,8 @@ Value *SCEVExpander::expandAddToGEP(const SCEVHandle *op_begin,
for (;;) {
APInt ElSize = APInt(SE.getTypeSizeInBits(Ty),
ElTy->isSized() ? SE.TD->getTypeAllocSize(ElTy) : 0);
std::vector<SCEVHandle> NewOps;
std::vector<SCEVHandle> ScaledOps;
SmallVector<SCEVHandle, 8> NewOps;
SmallVector<SCEVHandle, 8> ScaledOps;
for (unsigned i = 0, e = Ops.size(); i != e; ++i) {
// Split AddRecs up into parts as either of the parts may be usable
// without the other.
@@ -365,7 +366,7 @@ Value *SCEVExpander::visitAddExpr(const SCEVAddExpr *S) {
// comments on expandAddToGEP for details.
if (SE.TD)
if (const PointerType *PTy = dyn_cast<PointerType>(V->getType())) {
const std::vector<SCEVHandle> &Ops = S->getOperands();
const SmallVectorImpl<SCEVHandle> &Ops = S->getOperands();
return expandAddToGEP(&Ops[0], &Ops[Ops.size() - 1],
PTy, Ty, V);
}
@@ -432,7 +433,7 @@ static void ExposePointerBase(SCEVHandle &Base, SCEVHandle &Rest,
}
if (const SCEVAddExpr *A = dyn_cast<SCEVAddExpr>(Base)) {
Base = A->getOperand(A->getNumOperands()-1);
std::vector<SCEVHandle> NewAddOps(A->op_begin(), A->op_end());
SmallVector<SCEVHandle, 8> NewAddOps(A->op_begin(), A->op_end());
NewAddOps.back() = Rest;
Rest = SE.getAddExpr(NewAddOps);
ExposePointerBase(Base, Rest, SE);
@@ -473,7 +474,8 @@ Value *SCEVExpander::visitAddRecExpr(const SCEVAddRecExpr *S) {
// {X,+,F} --> X + {0,+,F}
if (!S->getStart()->isZero()) {
std::vector<SCEVHandle> NewOps(S->getOperands());
const SmallVectorImpl<SCEVHandle> &SOperands = S->getOperands();
SmallVector<SCEVHandle, 4> NewOps(SOperands.begin(), SOperands.end());
NewOps[0] = SE.getIntegerSCEV(0, Ty);
SCEVHandle Rest = SE.getAddRecExpr(NewOps, L);