diff options
Diffstat (limited to 'llvm/lib/CodeGen/MachineOutliner.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/MachineOutliner.cpp | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/MachineOutliner.cpp b/llvm/lib/CodeGen/MachineOutliner.cpp index 5cefaf4..4b65d97 100644 --- a/llvm/lib/CodeGen/MachineOutliner.cpp +++ b/llvm/lib/CodeGen/MachineOutliner.cpp @@ -1386,7 +1386,11 @@ void MachineOutliner::populateMapper(InstructionMapper &Mapper, Module &M, for (MachineBasicBlock &MBB : *MF) { // If there isn't anything in MBB, then there's no point in outlining from // it. - if (MBB.empty()) + // If there are fewer than 2 instructions in the MBB, then it can't ever + // contain something worth outlining. + // FIXME: This should be based off of the maximum size in B of an outlined + // call versus the size in B of the MBB. + if (MBB.empty() || MBB.size() < 2) continue; // Check if MBB could be the target of an indirect branch. If it is, then |