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

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This reverts commit r213474 (and r213475), which causes a miscompile on
a stage2 LTO build.  I'll reply on the list in a moment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213562 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan P. N. Exon Smith
2014-07-21 17:06:51 +00:00
parent 9787e8c76b
commit facdfc6781
41 changed files with 230 additions and 167 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 (BasicBlock *Pred : predecessors(BB))
PN->addIncoming(InVal, Pred);
for (pred_iterator PI = pred_begin(BB), E = pred_end(BB); PI != E; ++PI)
PN->addIncoming(InVal, *PI);
}
}
}
@@ -977,11 +977,11 @@ bool CodeGenPrepare::DupRetToEnableTailCallOpts(BasicBlock *BB) {
}
} else {
SmallPtrSet<BasicBlock*, 4> VisitedBBs;
for (BasicBlock *Pred : predecessors(BB)) {
if (!VisitedBBs.insert(Pred))
for (pred_iterator PI = pred_begin(BB), PE = pred_end(BB); PI != PE; ++PI) {
if (!VisitedBBs.insert(*PI))
continue;
BasicBlock::InstListType &InstList = Pred->getInstList();
BasicBlock::InstListType &InstList = (*PI)->getInstList();
BasicBlock::InstListType::reverse_iterator RI = InstList.rbegin();
BasicBlock::InstListType::reverse_iterator RE = InstList.rend();
do { ++RI; } while (RI != RE && isa<DbgInfoIntrinsic>(&*RI));