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[PM] Lift the analyses into the interface for

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SplitLandingPadPredecessors and remove the Pass argument from its
interface.

Another step to the utilities being usable with both old and new pass
managers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@226426 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chandler Carruth
2015-01-19 03:03:39 +00:00
parent 75dd736002
commit d09c0db8a9
7 changed files with 21 additions and 20 deletions
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14
lib/Transforms/Utils/BasicBlockUtils.cpp
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@ -523,10 +523,11 @@ BasicBlock *llvm::SplitBlockPredecessors(BasicBlock *BB,
/// exits).
///
void llvm::SplitLandingPadPredecessors(BasicBlock *OrigBB,
ArrayRef<BasicBlock*> Preds,
ArrayRef<BasicBlock *> Preds,
const char *Suffix1, const char *Suffix2,
Pass *P,
SmallVectorImpl<BasicBlock*> &NewBBs) {
SmallVectorImpl<BasicBlock *> &NewBBs,
AliasAnalysis *AA, DominatorTree *DT,
LoopInfo *LI, bool PreserveLCSSA) {
assert(OrigBB->isLandingPad() && "Trying to split a non-landing pad!");
// Create a new basic block for OrigBB's predecessors listed in Preds. Insert
@ -549,18 +550,11 @@ void llvm::SplitLandingPadPredecessors(BasicBlock *OrigBB,
Preds[i]->getTerminator()->replaceUsesOfWith(OrigBB, NewBB1);
}
// Update DominatorTree, LoopInfo, and LCCSA analysis information.
auto *DTWP = P->getAnalysisIfAvailable<DominatorTreeWrapperPass>();
auto *DT = DTWP ? &DTWP->getDomTree() : nullptr;
auto *LIWP = P->getAnalysisIfAvailable<LoopInfoWrapperPass>();
auto *LI = LIWP ? &LIWP->getLoopInfo() : nullptr;
bool PreserveLCSSA = P->mustPreserveAnalysisID(LCSSAID);
bool HasLoopExit = false;
UpdateAnalysisInformation(OrigBB, NewBB1, Preds, DT, LI, PreserveLCSSA,
HasLoopExit);
// Update the PHI nodes in OrigBB with the values coming from NewBB1.
AliasAnalysis *AA = P ? P->getAnalysisIfAvailable<AliasAnalysis>() : nullptr;
UpdatePHINodes(OrigBB, NewBB1, Preds, BI1, AA, HasLoopExit);
// Move the remaining edges from OrigBB to point to NewBB2.