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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 | 2dfbcc45064b8e5d0a6fe8ea792cd7e092839156 (patch) | |
| tree | ec04bb592ffd03bc83a4e8564b712bcbd012827c /llvm/lib/Transforms/Utils/BreakCriticalEdges.cpp | |
| parent | 854fe433d46081a4dded8d2cc7b0d867c1730598 (diff) | |
| download | llvm-2dfbcc45064b8e5d0a6fe8ea792cd7e092839156.zip llvm-2dfbcc45064b8e5d0a6fe8ea792cd7e092839156.tar.gz llvm-2dfbcc45064b8e5d0a6fe8ea792cd7e092839156.tar.bz2 | |
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.
llvm-svn: 137866
Diffstat (limited to 'llvm/lib/Transforms/Utils/BreakCriticalEdges.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Utils/BreakCriticalEdges.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/llvm/lib/Transforms/Utils/BreakCriticalEdges.cpp b/llvm/lib/Transforms/Utils/BreakCriticalEdges.cpp index 803e431..03770cc 100644 --- a/llvm/lib/Transforms/Utils/BreakCriticalEdges.cpp +++ b/llvm/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"); |