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| author | Bill Wendling <isanbard@gmail.com> | 2020-02-20 16:22:35 -0800 |
|---|---|---|
| committer | Hans Wennborg <hans@chromium.org> | 2020-02-21 09:51:47 +0100 |
| commit | da0fe2ade369223ebea2dafd411746e854a801f2 (patch) | |
| tree | 7d8e06571519c8941e724b58b9bea737a5a4b66b /llvm/lib/Transforms/Utils/BasicBlockUtils.cpp | |
| parent | d75ce45777d9802d43b555993fde8ed6562fb368 (diff) | |
| download | bcm5719-llvm-da0fe2ade369223ebea2dafd411746e854a801f2.tar.gz bcm5719-llvm-da0fe2ade369223ebea2dafd411746e854a801f2.zip | |
Filter callbr insts from critical edge splitting
Similarly to how splitting predecessors with an indirectbr isn't handled
in the generic way, we also shouldn't split callbrs, for similar
reasons.
(cherry picked from commit 2fe457690da0fc38bc7f9f1d0aee2ba6a6a16ada)
Diffstat (limited to 'llvm/lib/Transforms/Utils/BasicBlockUtils.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Utils/BasicBlockUtils.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/Transforms/Utils/BasicBlockUtils.cpp b/llvm/lib/Transforms/Utils/BasicBlockUtils.cpp index c9eb4abfa21..9a7379e27ed 100644 --- a/llvm/lib/Transforms/Utils/BasicBlockUtils.cpp +++ b/llvm/lib/Transforms/Utils/BasicBlockUtils.cpp @@ -505,7 +505,8 @@ llvm::SplitAllCriticalEdges(Function &F, unsigned NumBroken = 0; for (BasicBlock &BB : F) { Instruction *TI = BB.getTerminator(); - if (TI->getNumSuccessors() > 1 && !isa<IndirectBrInst>(TI)) + if (TI->getNumSuccessors() > 1 && !isa<IndirectBrInst>(TI) && + !isa<CallBrInst>(TI)) for (unsigned i = 0, e = TI->getNumSuccessors(); i != e; ++i) if (SplitCriticalEdge(TI, i, Options)) ++NumBroken; |
