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SplitBlockPredecessors uses ArrayRef instead of Data and Size.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146277 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakub Staszak
2011-12-09 21:19:53 +00:00
parent cd462d055f
commit 2fac1d5d61
7 changed files with 18 additions and 32 deletions
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15
lib/Transforms/Utils/BasicBlockUtils.cpp
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@@ -453,9 +453,8 @@ static void UpdatePHINodes(BasicBlock *OrigBB, BasicBlock *NewBB,
/// of the edges being split is an exit of a loop with other exits).
///
BasicBlock *llvm::SplitBlockPredecessors(BasicBlock *BB,
BasicBlock *const *Preds,
unsigned NumPreds, const char *Suffix,
Pass *P) {
ArrayRef<BasicBlock*> Preds,
const char *Suffix, Pass *P) {
// Create new basic block, insert right before the original block.
BasicBlock *NewBB = BasicBlock::Create(BB->getContext(), BB->getName()+Suffix,
BB->getParent(), BB);
@@ -464,7 +463,7 @@ BasicBlock *llvm::SplitBlockPredecessors(BasicBlock *BB,
BranchInst *BI = BranchInst::Create(BB, NewBB);
// Move the edges from Preds to point to NewBB instead of BB.
for (unsigned i = 0; i != NumPreds; ++i) {
for (unsigned i = 0, e = Preds.size(); i != e; ++i) {
// This is slightly more strict than necessary; the minimum requirement
// is that there be no more than one indirectbr branching to BB. And
// all BlockAddress uses would need to be updated.
@@ -477,7 +476,7 @@ BasicBlock *llvm::SplitBlockPredecessors(BasicBlock *BB,
// node becomes an incoming value for BB's phi node. However, if the Preds
// list is empty, we need to insert dummy entries into the PHI nodes in BB to
// account for the newly created predecessor.
if (NumPreds == 0) {
if (Preds.size() == 0) {
// Insert dummy values as the incoming value.
for (BasicBlock::iterator I = BB->begin(); isa<PHINode>(I); ++I)
cast<PHINode>(I)->addIncoming(UndefValue::get(I->getType()), NewBB);
@@ -486,12 +485,10 @@ BasicBlock *llvm::SplitBlockPredecessors(BasicBlock *BB,
// Update DominatorTree, LoopInfo, and LCCSA analysis information.
bool HasLoopExit = false;
UpdateAnalysisInformation(BB, NewBB, ArrayRef<BasicBlock*>(Preds, NumPreds),
P, HasLoopExit);
UpdateAnalysisInformation(BB, NewBB, Preds, P, HasLoopExit);
// Update the PHI nodes in BB with the values coming from NewBB.
UpdatePHINodes(BB, NewBB, ArrayRef<BasicBlock*>(Preds, NumPreds), BI,
P, HasLoopExit);
UpdatePHINodes(BB, NewBB, Preds, BI, P, HasLoopExit);
return NewBB;
}