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Diffstat (limited to 'lib/Transforms/Utils/LoopSimplify.cpp')
| -rw-r--r-- | lib/Transforms/Utils/LoopSimplify.cpp | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/lib/Transforms/Utils/LoopSimplify.cpp b/lib/Transforms/Utils/LoopSimplify.cpp index 44a2c1f851..690972dc55 100644 --- a/lib/Transforms/Utils/LoopSimplify.cpp +++ b/lib/Transforms/Utils/LoopSimplify.cpp @@ -477,8 +477,13 @@ Loop *LoopSimplify::SeparateNestedLoop(Loop *L, LPPassManager &LPM) { SmallVector<BasicBlock*, 8> OuterLoopPreds; for (unsigned i = 0, e = PN->getNumIncomingValues(); i != e; ++i) if (PN->getIncomingValue(i) != PN || - !L->contains(PN->getIncomingBlock(i))) + !L->contains(PN->getIncomingBlock(i))) { + // We can't split indirectbr edges. + if (isa<IndirectBrInst>(PN->getIncomingBlock(i)->getTerminator())) + return 0; + OuterLoopPreds.push_back(PN->getIncomingBlock(i)); + } BasicBlock *Header = L->getHeader(); BasicBlock *NewBB = SplitBlockPredecessors(Header, &OuterLoopPreds[0], |