Use schedulePass() instead of assignPassManager() to add new LPPassManager.
This ensures that require analysis info is available.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34980 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/LoopPass.cpp b/lib/Analysis/LoopPass.cpp
index 0a29c5d..b6b862e 100644
--- a/lib/Analysis/LoopPass.cpp
+++ b/lib/Analysis/LoopPass.cpp
@@ -143,14 +143,22 @@
LQ.push_back(L);
}
+/// Pass Manager itself does not invalidate any analysis info.
+void LPPassManager::getAnalysisUsage(AnalysisUsage &Info) const {
+ // LPPassManager needs LoopInfo. In the long term LoopInfo class will
+ // become part of LPPassManager.
+ Info.addRequired<LoopInfo>();
+ Info.setPreservesAll();
+}
+
/// run - Execute all of the passes scheduled for execution. Keep track of
/// whether any of the passes modifies the function, and if so, return true.
bool LPPassManager::runOnFunction(Function &F) {
- LoopInfo &LI = getAnalysis<LoopInfo>();
+ LI = &getAnalysis<LoopInfo>();
bool Changed = false;
// Populate Loop Queue
- for (LoopInfo::iterator I = LI.begin(), E = LI.end(); I != E; ++I)
+ for (LoopInfo::iterator I = LI->begin(), E = LI->end(); I != E; ++I)
addLoopIntoQueue(*I, LQ);
// Initialization
@@ -279,7 +287,7 @@
// [3] Assign manager to manage this new manager. This may create
// and push new managers into PMS
Pass *P = dynamic_cast<Pass *>(LPPM);
- P->assignPassManager(PMS);
+ TPM->schedulePass(P);
// [4] Push new manager into PMS
PMS.push(LPPM);