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| author | Dan Gohman <gohman@apple.com> | 2010-08-16 14:41:14 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2010-08-16 14:41:14 +0000 |
| commit | 7a4994356b0e9726384edda57f7db65e5bc10673 (patch) | |
| tree | cefc166d9f059cd974c0f6cb85e75d82b0e0eb00 /lib/Transforms/Utils | |
| parent | 9883b95a2bff097ec6d0f34af1ddea22bf29b6c6 (diff) | |
| download | llvm-7a4994356b0e9726384edda57f7db65e5bc10673.tar.gz llvm-7a4994356b0e9726384edda57f7db65e5bc10673.tar.bz2 llvm-7a4994356b0e9726384edda57f7db65e5bc10673.tar.xz | |
Instead, teach SimplifyCFG to trim non-address-taken blocks from
indirectbr destination lists.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111122 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms/Utils')
| -rw-r--r-- | lib/Transforms/Utils/SimplifyCFG.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/lib/Transforms/Utils/SimplifyCFG.cpp b/lib/Transforms/Utils/SimplifyCFG.cpp index db719a0ce4..28d7afbf1c 100644 --- a/lib/Transforms/Utils/SimplifyCFG.cpp +++ b/lib/Transforms/Utils/SimplifyCFG.cpp @@ -2057,12 +2057,13 @@ bool SimplifyCFGOpt::run(BasicBlock *BB) { return true; } } - } else if (IndirectBrInst *IBI = dyn_cast<IndirectBrInst>(BB->getTerminator())) { + } else if (IndirectBrInst *IBI = + dyn_cast<IndirectBrInst>(BB->getTerminator())) { // Eliminate redundant destinations. SmallPtrSet<Value *, 8> Succs; for (unsigned i = 0, e = IBI->getNumDestinations(); i != e; ++i) { BasicBlock *Dest = IBI->getDestination(i); - if (!Succs.insert(Dest)) { + if (!Dest->hasAddressTaken() || !Succs.insert(Dest)) { Dest->removePredecessor(BB); IBI->removeDestination(i); --i; --e; |