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Remove CleanupDbgInfo, instcombine does this and its not worth duplicating it
here. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83789 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -141,10 +141,6 @@ namespace {
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///
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void HoistRegion(DomTreeNode *N);
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// Cleanup debug information (remove stoppoints with no coressponding
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// instructions).
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void CleanupDbgInfoRegion(DomTreeNode *N);
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/// inSubLoop - Little predicate that returns true if the specified basic
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/// block is in a subloop of the current one, not the current one itself.
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///
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@ -292,7 +288,6 @@ bool LICM::runOnLoop(Loop *L, LPPassManager &LPM) {
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//
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SinkRegion(DT->getNode(L->getHeader()));
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HoistRegion(DT->getNode(L->getHeader()));
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CleanupDbgInfoRegion(DT->getNode(L->getHeader()));
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// Now that all loop invariants have been removed from the loop, promote any
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// memory references to scalars that we can...
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@ -344,36 +339,6 @@ void LICM::SinkRegion(DomTreeNode *N) {
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}
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}
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void LICM::CleanupDbgInfoRegion(DomTreeNode *N) {
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BasicBlock *BB = N->getBlock();
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// If this subregion is not in the top level loop at all, exit.
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if (!CurLoop->contains(BB)) return;
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// We are processing blocks in reverse dfo, so process children first...
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const std::vector<DomTreeNode*> &Children = N->getChildren();
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for (unsigned i = 0, e = Children.size(); i != e; ++i)
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CleanupDbgInfoRegion(Children[i]);
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// Only need to process the contents of this block if it is not part of a
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// subloop (which would already have been processed).
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if (inSubLoop(BB)) return;
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// We modify the basicblock, so don't cache end()
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for (BasicBlock::iterator I=BB->begin(); I != BB->end();) {
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Instruction *Last = 0;
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// Remove consecutive dbgstoppoints, leave only last
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do {
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if (Last) {
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Last->eraseFromParent();
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Changed = true;
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}
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Last = I;
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++I;
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} while (isa<DbgStopPointInst>(Last) && isa<DbgStopPointInst>(I));
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}
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}
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/// HoistRegion - Walk the specified region of the CFG (defined by all blocks
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/// dominated by the specified block, and that are in the current loop) in depth
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/// first order w.r.t the DominatorTree. This allows us to visit definitions
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