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[PM] Split the LoopInfo object apart from the legacy pass, creating

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a LoopInfoWrapperPass to wire the object up to the legacy pass manager.

This switches all the clients of LoopInfo over and paves the way to port
LoopInfo to the new pass manager. No functionality change is intended
with this iteration.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@226373 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chandler Carruth
2015-01-17 14:16:18 +00:00
parent 962cff0c08
commit de5df29556
39 changed files with 185 additions and 163 deletions
Download Patch File Download Diff File Expand all files Collapse all files
lib/Transforms/Utils/BasicBlockUtils.cpp
+9 -6
View File
@@ -180,8 +180,8 @@ bool llvm::MergeBlockIntoPredecessor(BasicBlock *BB, Pass *P) {
DT.eraseNode(BB);
}
if (LoopInfo *LI = P->getAnalysisIfAvailable<LoopInfo>())
LI->removeBlock(BB);
if (auto *LIWP = P->getAnalysisIfAvailable<LoopInfoWrapperPass>())
LIWP->getLoopInfo().removeBlock(BB);
if (MemoryDependenceAnalysis *MD =
P->getAnalysisIfAvailable<MemoryDependenceAnalysis>())
@@ -290,9 +290,11 @@ BasicBlock *llvm::SplitBlock(BasicBlock *Old, Instruction *SplitPt, Pass *P) {
// The new block lives in whichever loop the old one did. This preserves
// LCSSA as well, because we force the split point to be after any PHI nodes.
if (LoopInfo *LI = P->getAnalysisIfAvailable<LoopInfo>())
if (Loop *L = LI->getLoopFor(Old))
L->addBasicBlockToLoop(New, LI->getBase());
if (auto *LIWP = P->getAnalysisIfAvailable<LoopInfoWrapperPass>()) {
LoopInfo &LI = LIWP->getLoopInfo();
if (Loop *L = LI.getLoopFor(Old))
L->addBasicBlockToLoop(New, LI.getBase());
}
if (DominatorTreeWrapperPass *DTWP =
P->getAnalysisIfAvailable<DominatorTreeWrapperPass>()) {
@@ -321,7 +323,8 @@ static void UpdateAnalysisInformation(BasicBlock *OldBB, BasicBlock *NewBB,
Pass *P, bool &HasLoopExit) {
if (!P) return;
LoopInfo *LI = P->getAnalysisIfAvailable<LoopInfo>();
auto *LIWP = P->getAnalysisIfAvailable<LoopInfoWrapperPass>();
LoopInfo *LI = LIWP ? &LIWP->getLoopInfo() : nullptr;
Loop *L = LI ? LI->getLoopFor(OldBB) : nullptr;
// If we need to preserve loop analyses, collect some information about how