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move tier out of an anonymous namespace, it doesn't make sense

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to for it to be an an anon namespace and be in a header.

Eliminate some extraenous uses of tie.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135669 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2011-07-21 06:21:31 +00:00
parent dbd4fe2b0a
commit c30a38f34b
7 changed files with 54 additions and 58 deletions
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24
lib/Transforms/Scalar/IndVarSimplify.cpp
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@ -1389,24 +1389,23 @@ void IndVarSimplify::SimplifyIVUsersNoRewrite(Loop *L, SCEVExpander &Rewriter) {
pushIVUsers(CurrIV, Simplified, SimpleIVUsers);
while (!SimpleIVUsers.empty()) {
Instruction *UseInst, *Operand;
tie(UseInst, Operand) = SimpleIVUsers.pop_back_val();
std::pair<Instruction*, Instruction*> Use =SimpleIVUsers.pop_back_val();
// Bypass back edges to avoid extra work.
if (UseInst == CurrIV) continue;
if (Use.first == CurrIV) continue;
if (EliminateIVUser(UseInst, Operand)) {
pushIVUsers(Operand, Simplified, SimpleIVUsers);
if (EliminateIVUser(Use.first, Use.second)) {
pushIVUsers(Use.second, Simplified, SimpleIVUsers);
continue;
}
if (CastInst *Cast = dyn_cast<CastInst>(UseInst)) {
if (CastInst *Cast = dyn_cast<CastInst>(Use.first)) {
bool IsSigned = Cast->getOpcode() == Instruction::SExt;
if (IsSigned || Cast->getOpcode() == Instruction::ZExt) {
CollectExtend(Cast, IsSigned, WI, SE, TD);
}
continue;
}
if (isSimpleIVUser(UseInst, L, SE)) {
pushIVUsers(UseInst, Simplified, SimpleIVUsers);
if (isSimpleIVUser(Use.first, L, SE)) {
pushIVUsers(Use.first, Simplified, SimpleIVUsers);
}
}
if (WI.WidestNativeType) {
@ -1437,12 +1436,11 @@ void IndVarSimplify::SimplifyCongruentIVs(Loop *L) {
continue;
const SCEV *S = SE->getSCEV(Phi);
DenseMap<const SCEV *, PHINode *>::const_iterator Pos;
bool Inserted;
tie(Pos, Inserted) = ExprToIVMap.insert(std::make_pair(S, Phi));
if (Inserted)
std::pair<DenseMap<const SCEV *, PHINode *>::const_iterator, bool> Tmp =
ExprToIVMap.insert(std::make_pair(S, Phi));
if (Tmp.second)
continue;
PHINode *OrigPhi = Pos->second;
PHINode *OrigPhi = Tmp.first->second;
// If one phi derives from the other via GEPs, types may differ.
if (OrigPhi->getType() != Phi->getType())