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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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8
lib/Transforms/Utils/BreakCriticalEdges.cpp
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@ -233,9 +233,7 @@ BasicBlock *llvm::SplitCriticalEdge(TerminatorInst *TI, unsigned SuccNum,
if (PN->getIncomingBlock(i) != NewBB)
OtherPreds.push_back(PN->getIncomingBlock(i));
} else {
for (pred_iterator I = pred_begin(DestBB), E = pred_end(DestBB);
I != E; ++I) {
BasicBlock *P = *I;
for (BasicBlock *P : predecessors(DestBB)) {
if (P != NewBB)
OtherPreds.push_back(P);
}
@ -321,9 +319,7 @@ BasicBlock *llvm::SplitCriticalEdge(TerminatorInst *TI, unsigned SuccNum,
// the predecessor must be directly in TIL, not in a subloop, or again
// LoopSimplify doesn't hold.
SmallVector<BasicBlock *, 4> LoopPreds;
for (pred_iterator I = pred_begin(DestBB), E = pred_end(DestBB); I != E;
++I) {
BasicBlock *P = *I;
for (BasicBlock *P : predecessors(DestBB)) {
if (P == NewBB)
continue; // The new block is known.
if (LI->getLoopFor(P) != TIL) {