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[loop-unroll] Properly populate LoopInfo for loops cloned in LoopUnrollRuntime. 

Summary:
This fixes Transforms/LoopUnroll/runtime-loop3.ll which failed with
EXTENSIVE_DEBUG, because the cloned basic blocks were not added to the
correct sub-loops in LoopUnrollRuntime.cpp.


Reviewers: dexonsmith, mzolotukhin

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D28482

llvm-svn: 291619
This commit is contained in:
Florian Hahn 2017-01-10 23:43:35 +00:00
parent 7d81813d76
commit 4f9d6d56c0
1 changed files with 5 additions and 3 deletions
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8
llvm/lib/Transforms/Utils/LoopUnrollRuntime.cpp
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@ -301,15 +301,17 @@ static void CloneLoopBlocks(Loop *L, Value *NewIter,
LI->addTopLevelLoop(NewLoop);
}
NewLoopsMap NewLoops;
NewLoops[L] = NewLoop;
// For each block in the original loop, create a new copy,
// and update the value map with the newly created values.
for (LoopBlocksDFS::RPOIterator BB = BlockBegin; BB != BlockEnd; ++BB) {
BasicBlock *NewBB = CloneBasicBlock(*BB, VMap, "." + suffix, F);
NewBlocks.push_back(NewBB);
if (NewLoop)
NewLoop->addBasicBlockToLoop(NewBB, *LI);
else if (ParentLoop)
if (NewLoop) {
addClonedBlockToLoopInfo(*BB, NewBB, LI, NewLoops);
} else if (ParentLoop)
ParentLoop->addBasicBlockToLoop(NewBB, *LI);
VMap[*BB] = NewBB;