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Remove CleanupDbgInfo, instcombine does this and its not worth duplicating it 

here.

llvm-svn: 83789
This commit is contained in:
Torok Edwin 2009-10-11 19:58:35 +00:00
parent 5f6aa105f5
commit 8b3081350e
1 changed files with 0 additions and 35 deletions
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35
llvm/lib/Transforms/Scalar/LICM.cpp
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@ -141,10 +141,6 @@ namespace {
///
void HoistRegion(DomTreeNode *N);
// Cleanup debug information (remove stoppoints with no coressponding
// instructions).
void CleanupDbgInfoRegion(DomTreeNode *N);
/// inSubLoop - Little predicate that returns true if the specified basic
/// block is in a subloop of the current one, not the current one itself.
///
@ -292,7 +288,6 @@ bool LICM::runOnLoop(Loop *L, LPPassManager &LPM) {
//
SinkRegion(DT->getNode(L->getHeader()));
HoistRegion(DT->getNode(L->getHeader()));
CleanupDbgInfoRegion(DT->getNode(L->getHeader()));
// Now that all loop invariants have been removed from the loop, promote any
// memory references to scalars that we can...
@ -344,36 +339,6 @@ void LICM::SinkRegion(DomTreeNode *N) {
}
}
void LICM::CleanupDbgInfoRegion(DomTreeNode *N) {
BasicBlock *BB = N->getBlock();
// If this subregion is not in the top level loop at all, exit.
if (!CurLoop->contains(BB)) return;
// We are processing blocks in reverse dfo, so process children first...
const std::vector<DomTreeNode*> &Children = N->getChildren();
for (unsigned i = 0, e = Children.size(); i != e; ++i)
CleanupDbgInfoRegion(Children[i]);
// Only need to process the contents of this block if it is not part of a
// subloop (which would already have been processed).
if (inSubLoop(BB)) return;
// We modify the basicblock, so don't cache end()
for (BasicBlock::iterator I=BB->begin(); I != BB->end();) {
Instruction *Last = 0;
// Remove consecutive dbgstoppoints, leave only last
do {
if (Last) {
Last->eraseFromParent();
Changed = true;
}
Last = I;
++I;
} while (isa<DbgStopPointInst>(Last) && isa<DbgStopPointInst>(I));
}
}
/// HoistRegion - Walk the specified region of the CFG (defined by all blocks
/// dominated by the specified block, and that are in the current loop) in depth
/// first order w.r.t the DominatorTree. This allows us to visit definitions