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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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16
lib/Transforms/Scalar/LoopStrengthReduce.cpp
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@@ -592,7 +592,7 @@ static void MoveLoopVariantsToImmediateField(SCEVHandle &Val, SCEVHandle &Imm,
if (Val->isLoopInvariant(L)) return; // Nothing to do.
if (const SCEVAddExpr *SAE = dyn_cast<SCEVAddExpr>(Val)) {
std::vector<SCEVHandle> NewOps;
SmallVector<SCEVHandle, 4> NewOps;
NewOps.reserve(SAE->getNumOperands());
for (unsigned i = 0; i != SAE->getNumOperands(); ++i)
@@ -613,7 +613,7 @@ static void MoveLoopVariantsToImmediateField(SCEVHandle &Val, SCEVHandle &Imm,
SCEVHandle Start = SARE->getStart();
MoveLoopVariantsToImmediateField(Start, Imm, L, SE);
std::vector<SCEVHandle> Ops(SARE->op_begin(), SARE->op_end());
SmallVector<SCEVHandle, 4> Ops(SARE->op_begin(), SARE->op_end());
Ops[0] = Start;
Val = SE->getAddRecExpr(Ops, SARE->getLoop());
} else {
@@ -633,7 +633,7 @@ static void MoveImmediateValues(const TargetLowering *TLI,
bool isAddress, Loop *L,
ScalarEvolution *SE) {
if (const SCEVAddExpr *SAE = dyn_cast<SCEVAddExpr>(Val)) {
std::vector<SCEVHandle> NewOps;
SmallVector<SCEVHandle, 4> NewOps;
NewOps.reserve(SAE->getNumOperands());
for (unsigned i = 0; i != SAE->getNumOperands(); ++i) {
@@ -660,7 +660,7 @@ static void MoveImmediateValues(const TargetLowering *TLI,
MoveImmediateValues(TLI, AccessTy, Start, Imm, isAddress, L, SE);
if (Start != SARE->getStart()) {
std::vector<SCEVHandle> Ops(SARE->op_begin(), SARE->op_end());
SmallVector<SCEVHandle, 4> Ops(SARE->op_begin(), SARE->op_end());
Ops[0] = Start;
Val = SE->getAddRecExpr(Ops, SARE->getLoop());
}
@@ -717,7 +717,7 @@ static void MoveImmediateValues(const TargetLowering *TLI,
/// SeparateSubExprs - Decompose Expr into all of the subexpressions that are
/// added together. This is used to reassociate common addition subexprs
/// together for maximal sharing when rewriting bases.
static void SeparateSubExprs(std::vector<SCEVHandle> &SubExprs,
static void SeparateSubExprs(SmallVector<SCEVHandle, 16> &SubExprs,
SCEVHandle Expr,
ScalarEvolution *SE) {
if (const SCEVAddExpr *AE = dyn_cast<SCEVAddExpr>(Expr)) {
@@ -729,7 +729,7 @@ static void SeparateSubExprs(std::vector<SCEVHandle> &SubExprs,
SubExprs.push_back(Expr);
} else {
// Compute the addrec with zero as its base.
std::vector<SCEVHandle> Ops(SARE->op_begin(), SARE->op_end());
SmallVector<SCEVHandle, 4> Ops(SARE->op_begin(), SARE->op_end());
Ops[0] = Zero; // Start with zero base.
SubExprs.push_back(SE->getAddRecExpr(Ops, SARE->getLoop()));
@@ -783,9 +783,9 @@ RemoveCommonExpressionsFromUseBases(std::vector<BasedUser> &Uses,
// UniqueSubExprs - Keep track of all of the subexpressions we see in the
// order we see them.
std::vector<SCEVHandle> UniqueSubExprs;
SmallVector<SCEVHandle, 16> UniqueSubExprs;
std::vector<SCEVHandle> SubExprs;
SmallVector<SCEVHandle, 16> SubExprs;
unsigned NumUsesInsideLoop = 0;
for (unsigned i = 0; i != NumUses; ++i) {
// If the user is outside the loop, just ignore it for base computation.