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[C++11] Add predecessors(BasicBlock *) / successors(BasicBlock *) iterator ranges.

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Summary: This patch introduces two new iterator ranges and updates existing code to use it.  No functional change intended.

Test Plan: All tests (make check-all) still pass.

Reviewers: dblaikie

Reviewed By: dblaikie

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D4481

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213474 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Manuel Jacob
2014-07-20 09:10:11 +00:00
parent 83a385a57b
commit a4697dad19
41 changed files with 166 additions and 226 deletions
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10
lib/CodeGen/CodeGenPrepare.cpp
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@ -453,8 +453,8 @@ void CodeGenPrepare::EliminateMostlyEmptyBlock(BasicBlock *BB) {
for (unsigned i = 0, e = BBPN->getNumIncomingValues(); i != e; ++i)
PN->addIncoming(InVal, BBPN->getIncomingBlock(i));
} else {
for (pred_iterator PI = pred_begin(BB), E = pred_end(BB); PI != E; ++PI)
PN->addIncoming(InVal, *PI);
for (BasicBlock *Pred : predecessors(BB))
PN->addIncoming(InVal, Pred);
}
}
}
@ -977,11 +977,11 @@ bool CodeGenPrepare::DupRetToEnableTailCallOpts(BasicBlock *BB) {
}
} else {
SmallPtrSet<BasicBlock*, 4> VisitedBBs;
for (pred_iterator PI = pred_begin(BB), PE = pred_end(BB); PI != PE; ++PI) {
if (!VisitedBBs.insert(*PI))
for (BasicBlock *Pred : predecessors(BB)) {
if (!VisitedBBs.insert(Pred))
continue;
BasicBlock::InstListType &InstList = (*PI)->getInstList();
BasicBlock::InstListType &InstList = Pred->getInstList();
BasicBlock::InstListType::reverse_iterator RI = InstList.rbegin();
BasicBlock::InstListType::reverse_iterator RE = InstList.rend();
do { ++RI; } while (RI != RE && isa<DbgInfoIntrinsic>(&*RI));