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Differential D141029 Diff 488667 llvm/lib/Transforms/Scalar/LoopInterchange.cpp

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llvm/lib/Transforms/Scalar/LoopInterchange.cpp

Show First 20 Lines • Show All 1,234 Lines • ▼ Show 20 Linesvoid LoopInterchangeTransform::restructureLoops(
// The preheader of the original outer loop becomes part of the new // The preheader of the original outer loop becomes part of the new
// outer loop. // outer loop.
NewOuter->addBlockEntry(OrigOuterPreHeader); NewOuter->addBlockEntry(OrigOuterPreHeader);
LI->changeLoopFor(OrigOuterPreHeader, NewOuter); LI->changeLoopFor(OrigOuterPreHeader, NewOuter);
// Tell SE that we move the loops around. // Tell SE that we move the loops around.
SE->forgetLoop(NewOuter); SE->forgetLoop(NewOuter);
SE->forgetLoop(NewInner);
} }
bool LoopInterchangeTransform::transform() { bool LoopInterchangeTransform::transform() {
bool Transformed = false; bool Transformed = false;
if (InnerLoop->getSubLoops().empty()) { if (InnerLoop->getSubLoops().empty()) {
BasicBlock *InnerLoopPreHeader = InnerLoop->getLoopPreheader(); BasicBlock *InnerLoopPreHeader = InnerLoop->getLoopPreheader();
LLVM_DEBUG(dbgs() << "Splitting the inner loop latch\n"); LLVM_DEBUG(dbgs() << "Splitting the inner loop latch\n");
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