diff options
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Target/SystemZ/SystemZISelLowering.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/llvm/lib/Target/SystemZ/SystemZISelLowering.cpp b/llvm/lib/Target/SystemZ/SystemZISelLowering.cpp index bf2d1833515..5de324d1d46 100644 --- a/llvm/lib/Target/SystemZ/SystemZISelLowering.cpp +++ b/llvm/lib/Target/SystemZ/SystemZISelLowering.cpp @@ -6626,6 +6626,10 @@ MachineBasicBlock *SystemZTargetLowering::emitMemMemWrapper( DestBase = MachineOperand::CreateReg(NextDestReg, false); SrcBase = MachineOperand::CreateReg(NextSrcReg, false); Length &= 255; + if (EndMBB && !Length) + // If the loop handled the whole CLC range, DoneMBB will be empty with + // CC live-through into EndMBB, so add it as live-in. + DoneMBB->addLiveIn(SystemZ::CC); MBB = DoneMBB; } // Handle any remaining bytes with straight-line code. |
