diff options
Diffstat (limited to 'llvm/lib/CodeGen')
| -rw-r--r-- | llvm/lib/CodeGen/MIRCanonicalizerPass.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/MIRCanonicalizerPass.cpp b/llvm/lib/CodeGen/MIRCanonicalizerPass.cpp index e8a6e409fb5..650240e60fe 100644 --- a/llvm/lib/CodeGen/MIRCanonicalizerPass.cpp +++ b/llvm/lib/CodeGen/MIRCanonicalizerPass.cpp @@ -104,6 +104,8 @@ INITIALIZE_PASS_END(MIRCanonicalizer, "mir-canonicalizer", "Rename Register Operands Canonically", false, false) static std::vector<MachineBasicBlock *> GetRPOList(MachineFunction &MF) { + if (MF.empty()) + return {}; ReversePostOrderTraversal<MachineBasicBlock *> RPOT(&*MF.begin()); std::vector<MachineBasicBlock *> RPOList; for (auto MBB : RPOT) { |
