diff options
Diffstat (limited to 'llvm/lib/CodeGen/PrologEpilogInserter.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/PrologEpilogInserter.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/PrologEpilogInserter.cpp b/llvm/lib/CodeGen/PrologEpilogInserter.cpp index a483ec7..a9813e5 100644 --- a/llvm/lib/CodeGen/PrologEpilogInserter.cpp +++ b/llvm/lib/CodeGen/PrologEpilogInserter.cpp @@ -450,12 +450,13 @@ static void updateLiveness(MachineFunction &MF) { const std::vector<CalleeSavedInfo> &CSI = MFI.getCalleeSavedInfo(); + MachineRegisterInfo &MRI = MF.getRegInfo(); for (unsigned i = 0, e = CSI.size(); i != e; ++i) { for (MachineBasicBlock *MBB : Visited) { MCPhysReg Reg = CSI[i].getReg(); // Add the callee-saved register as live-in. // It's killed at the spill. - if (!MBB->isLiveIn(Reg)) + if (!MRI.isReserved(Reg) && !MBB->isLiveIn(Reg)) MBB->addLiveIn(Reg); } } |