having it internally allocate the loop.
This is a much more flexible API and necessary in the new loop unswitch
to reasonably support both new and old PMs in common code. It also just
seems like a cleaner separation of concerns.
NFC, this should just be a pure refactoring.
Differential Revision: https://reviews.llvm.org/D33528
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303834
91177308-0d34-0410-b5e6-
96231b3b80d8
}
public:
- // Add a new loop into the loop queue as a child of the given parent, or at
- // the top level if \c ParentLoop is null.
- Loop &addLoop(Loop *ParentLoop);
+ // Add a new loop into the loop queue.
+ void addLoop(Loop &L);
//===--------------------------------------------------------------------===//
/// SimpleAnalysis - Provides simple interface to update analysis info
CurrentLoop = nullptr;
}
-// Inset loop into loop nest (LoopInfo) and loop queue (LQ).
-Loop &LPPassManager::addLoop(Loop *ParentLoop) {
- // Create a new loop. LI will take ownership.
- Loop *L = new Loop();
-
- // Insert into the loop nest and the loop queue.
- if (!ParentLoop) {
+// Insert loop into loop nest (LoopInfo) and loop queue (LQ).
+void LPPassManager::addLoop(Loop &L) {
+ if (!L.getParentLoop()) {
// This is the top level loop.
- LI->addTopLevelLoop(L);
- LQ.push_front(L);
- return *L;
+ LQ.push_front(&L);
+ return;
}
- ParentLoop->addChildLoop(L);
// Insert L into the loop queue after the parent loop.
for (auto I = LQ.begin(), E = LQ.end(); I != E; ++I) {
- if (*I == L->getParentLoop()) {
+ if (*I == L.getParentLoop()) {
// deque does not support insert after.
++I;
- LQ.insert(I, 1, L);
- break;
+ LQ.insert(I, 1, &L);
+ return;
}
}
- return *L;
}
/// cloneBasicBlockSimpleAnalysis - Invoke cloneBasicBlockAnalysis hook for
Loop *LoopConstrainer::createClonedLoopStructure(Loop *Original, Loop *Parent,
ValueToValueMapTy &VM) {
- Loop &New = LPM.addLoop(Parent);
+ Loop &New = *new Loop();
+ if (Parent)
+ Parent->addChildLoop(&New);
+ else
+ LI.addTopLevelLoop(&New);
+ LPM.addLoop(New);
// Add all of the blocks in Original to the new loop.
for (auto *BB : Original->blocks())
/// mapping the blocks with the specified map.
static Loop *CloneLoop(Loop *L, Loop *PL, ValueToValueMapTy &VM,
LoopInfo *LI, LPPassManager *LPM) {
- Loop &New = LPM->addLoop(PL);
+ Loop &New = *new Loop();
+ if (PL)
+ PL->addChildLoop(&New);
+ else
+ LI->addTopLevelLoop(&New);
+ LPM->addLoop(New);
// Add all of the blocks in L to the new loop.
for (Loop::block_iterator I = L->block_begin(), E = L->block_end();