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[Local] Update the comment for removeUnreachableBlocks. 

It referenced a wrong function name, and didn't mention what the
second argument did. This should be slightly more accurate now.

llvm-svn: 307425
This commit is contained in:
Davide Italiano 2017-07-07 18:54:14 +00:00
parent af7442abd0
commit 4eb210bdeb
1 changed files with 3 additions and 2 deletions
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5
llvm/lib/Transforms/Utils/Local.cpp
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@ -1662,9 +1662,10 @@ void llvm::removeUnwindEdge(BasicBlock *BB) {
TI->eraseFromParent();
}
/// removeUnreachableBlocksFromFn - Remove blocks that are not reachable, even
/// removeUnreachableBlocks - Remove blocks that are not reachable, even
/// if they are in a dead cycle. Return true if a change was made, false
/// otherwise.
/// otherwise. If `LVI` is passed, this function preserves LazyValueInfo
/// after modifying the CFG.
bool llvm::removeUnreachableBlocks(Function &F, LazyValueInfo *LVI) {
SmallPtrSet<BasicBlock*, 16> Reachable;
bool Changed = markAliveBlocks(F, Reachable);