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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136840 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Andrew Trick 2011-08-03 23:43:49 +00:00
parent 5207936a24
commit fbfb806e3f
1 changed files with 25 additions and 25 deletions
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50
include/llvm/Analysis/LoopInfo.h
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@ -105,7 +105,7 @@ public:
if (L == 0) return false;
return contains(L->getParentLoop());
}
/// contains - Return true if the specified basic block is in this loop.
///
bool contains(const BlockT *BB) const {
@ -527,7 +527,7 @@ public:
bool isLoopInvariant(Value *V) const;
/// hasLoopInvariantOperands - Return true if all the operands of the
/// specified instruction are loop invariant.
/// specified instruction are loop invariant.
bool hasLoopInvariantOperands(Instruction *I) const;
/// makeLoopInvariant - If the given value is an instruction inside of the
@ -607,7 +607,7 @@ public:
/// has a predecessor that is outside the loop.
bool hasDedicatedExits() const;
/// getUniqueExitBlocks - Return all unique successor blocks of this loop.
/// getUniqueExitBlocks - Return all unique successor blocks of this loop.
/// These are the blocks _outside of the current loop_ which are branched to.
/// This assumes that loop exits are in canonical form.
///
@ -618,7 +618,7 @@ public:
BasicBlock *getUniqueExitBlock() const;
void dump() const;
private:
friend class LoopInfoBase<BasicBlock, Loop>;
explicit Loop(BasicBlock *BB) : LoopBase<BasicBlock, Loop>(BB) {}
@ -641,7 +641,7 @@ class LoopInfoBase {
public:
LoopInfoBase() { }
~LoopInfoBase() { releaseMemory(); }
void releaseMemory() {
for (typename std::vector<LoopT *>::iterator I =
TopLevelLoops.begin(), E = TopLevelLoops.end(); I != E; ++I)
@ -650,7 +650,7 @@ public:
BBMap.clear(); // Reset internal state of analysis
TopLevelLoops.clear();
}
/// iterator/begin/end - The interface to the top-level loops in the current
/// function.
///
@ -658,7 +658,7 @@ public:
iterator begin() const { return TopLevelLoops.begin(); }
iterator end() const { return TopLevelLoops.end(); }
bool empty() const { return TopLevelLoops.empty(); }
/// getLoopFor - Return the inner most loop that BB lives in. If a basic
/// block is in no loop (for example the entry node), null is returned.
///
@ -667,13 +667,13 @@ public:
BBMap.find(const_cast<BlockT*>(BB));
return I != BBMap.end() ? I->second : 0;
}
/// operator[] - same as getLoopFor...
///
const LoopT *operator[](const BlockT *BB) const {
return getLoopFor(BB);
}
/// getLoopDepth - Return the loop nesting level of the specified block. A
/// depth of 0 means the block is not inside any loop.
///
@ -687,7 +687,7 @@ public:
const LoopT *L = getLoopFor(BB);
return L && L->getHeader() == BB;
}
/// removeLoop - This removes the specified top-level loop from this loop info
/// object. The loop is not deleted, as it will presumably be inserted into
/// another loop.
@ -698,7 +698,7 @@ public:
TopLevelLoops.erase(TopLevelLoops.begin() + (I-begin()));
return L;
}
/// changeLoopFor - Change the top-level loop that contains BB to the
/// specified loop. This should be used by transformations that restructure
/// the loop hierarchy tree.
@ -707,7 +707,7 @@ public:
assert(OldLoop && "Block not in a loop yet!");
OldLoop = L;
}
/// changeTopLevelLoop - Replace the specified loop in the top-level loops
/// list with the indicated loop.
void changeTopLevelLoop(LoopT *OldLoop,
@ -719,14 +719,14 @@ public:
assert(NewLoop->ParentLoop == 0 && OldLoop->ParentLoop == 0 &&
"Loops already embedded into a subloop!");
}
/// addTopLevelLoop - This adds the specified loop to the collection of
/// top-level loops.
void addTopLevelLoop(LoopT *New) {
assert(New->getParentLoop() == 0 && "Loop already in subloop!");
TopLevelLoops.push_back(New);
}
/// removeBlock - This method completely removes BB from all data structures,
/// including all of the Loop objects it is nested in and our mapping from
/// BasicBlocks to loops.
@ -739,16 +739,16 @@ public:
BBMap.erase(I);
}
}
// Internals
static bool isNotAlreadyContainedIn(const LoopT *SubLoop,
const LoopT *ParentLoop) {
if (SubLoop == 0) return true;
if (SubLoop == ParentLoop) return false;
return isNotAlreadyContainedIn(SubLoop->getParentLoop(), ParentLoop);
}
void Calculate(DominatorTreeBase<BlockT> &DT) {
BlockT *RootNode = DT.getRootNode()->getBlock();
@ -757,7 +757,7 @@ public:
if (LoopT *L = ConsiderForLoop(*NI, DT))
TopLevelLoops.push_back(L);
}
LoopT *ConsiderForLoop(BlockT *BB, DominatorTreeBase<BlockT> &DT) {
if (BBMap.find(BB) != BBMap.end()) return 0;// Haven't processed this node?
@ -812,9 +812,9 @@ public:
// Normal case, add the block to our loop...
L->Blocks.push_back(X);
typedef GraphTraits<Inverse<BlockT*> > InvBlockTraits;
// Add all of the predecessors of X to the end of the work stack...
TodoStack.insert(TodoStack.end(), InvBlockTraits::child_begin(X),
InvBlockTraits::child_end(X));
@ -878,7 +878,7 @@ public:
return L;
}
/// MoveSiblingLoopInto - This method moves the NewChild loop to live inside
/// of the NewParent Loop, instead of being a sibling of it.
void MoveSiblingLoopInto(LoopT *NewChild,
@ -897,7 +897,7 @@ public:
InsertLoopInto(NewChild, NewParent);
}
/// InsertLoopInto - This inserts loop L into the specified parent loop. If
/// the parent loop contains a loop which should contain L, the loop gets
/// inserted into L instead.
@ -918,9 +918,9 @@ public:
Parent->SubLoops.push_back(L);
L->ParentLoop = Parent;
}
// Debugging
void print(raw_ostream &OS) const {
for (unsigned i = 0; i < TopLevelLoops.size(); ++i)
TopLevelLoops[i]->print(OS);
@ -990,7 +990,7 @@ public:
virtual void releaseMemory() { LI.releaseMemory(); }
virtual void print(raw_ostream &O, const Module* M = 0) const;
virtual void getAnalysisUsage(AnalysisUsage &AU) const;
/// removeLoop - This removes the specified top-level loop from this loop info