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| author | Bill Wendling <isanbard@gmail.com> | 2011-08-17 21:04:05 +0000 |
|---|---|---|
| committer | Bill Wendling <isanbard@gmail.com> | 2011-08-17 21:04:05 +0000 |
| commit | 490606e613566d1c7d49d2544c76c207a2555915 (patch) | |
| tree | b0c22058d70f85ebcea129057c50c54d8dc1e82b /lib/Transforms/Utils | |
| parent | ef3bf64bf8f1e3147c78b772c6c57139403e4022 (diff) | |
| download | llvm-490606e613566d1c7d49d2544c76c207a2555915.tar.gz llvm-490606e613566d1c7d49d2544c76c207a2555915.tar.bz2 llvm-490606e613566d1c7d49d2544c76c207a2555915.tar.xz | |
Assert that we aren't trying to split the critical edge of a landing pad. Doing
so requires more care than this generic algorithm should handle.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137866 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms/Utils')
| -rw-r--r-- | lib/Transforms/Utils/BreakCriticalEdges.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/Transforms/Utils/BreakCriticalEdges.cpp b/lib/Transforms/Utils/BreakCriticalEdges.cpp index 803e431f76..03770cc1da 100644 --- a/lib/Transforms/Utils/BreakCriticalEdges.cpp +++ b/lib/Transforms/Utils/BreakCriticalEdges.cpp @@ -176,6 +176,11 @@ BasicBlock *llvm::SplitCriticalEdge(TerminatorInst *TI, unsigned SuccNum, BasicBlock *TIBB = TI->getParent(); BasicBlock *DestBB = TI->getSuccessor(SuccNum); + // Splitting the critical edge to a landing pad block is non-trivial. Don't do + // it in this generic function. + assert(!DestBB->isLandingPad() && + "Cannot split critical edge to a landing pad block!"); + // Create a new basic block, linking it into the CFG. BasicBlock *NewBB = BasicBlock::Create(TI->getContext(), TIBB->getName() + "." + DestBB->getName() + "_crit_edge"); |