diff options
Diffstat (limited to 'llvm/lib/CodeGen/LivePhysRegs.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/LivePhysRegs.cpp | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/LivePhysRegs.cpp b/llvm/lib/CodeGen/LivePhysRegs.cpp index 9f7d7cf5484..10d9406a27e 100644 --- a/llvm/lib/CodeGen/LivePhysRegs.cpp +++ b/llvm/lib/CodeGen/LivePhysRegs.cpp @@ -200,8 +200,10 @@ void LivePhysRegs::addLiveIns(const MachineBasicBlock &MBB) { addBlockLiveIns(MBB); } -void llvm::computeLiveIns(LivePhysRegs &LiveRegs, const TargetRegisterInfo &TRI, +void llvm::computeLiveIns(LivePhysRegs &LiveRegs, + const MachineRegisterInfo &MRI, MachineBasicBlock &MBB) { + const TargetRegisterInfo &TRI = *MRI.getTargetRegisterInfo(); assert(MBB.livein_empty()); LiveRegs.init(TRI); LiveRegs.addLiveOutsNoPristines(MBB); @@ -209,6 +211,8 @@ void llvm::computeLiveIns(LivePhysRegs &LiveRegs, const TargetRegisterInfo &TRI, LiveRegs.stepBackward(MI); for (unsigned Reg : LiveRegs) { + if (MRI.isReserved(Reg)) + continue; // Skip the register if we are about to add one of its super registers. bool ContainsSuperReg = false; for (MCSuperRegIterator SReg(Reg, &TRI); SReg.isValid(); ++SReg) { |
