diff options
Diffstat (limited to 'llvm/lib/CodeGen/MachineRegisterInfo.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/MachineRegisterInfo.cpp | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/llvm/lib/CodeGen/MachineRegisterInfo.cpp b/llvm/lib/CodeGen/MachineRegisterInfo.cpp index d7444ec..58bb866 100644 --- a/llvm/lib/CodeGen/MachineRegisterInfo.cpp +++ b/llvm/lib/CodeGen/MachineRegisterInfo.cpp @@ -530,11 +530,11 @@ bool MachineRegisterInfo::isConstantPhysReg(MCRegister PhysReg) const { /// specified register as undefined which causes the DBG_VALUE to be /// deleted during LiveDebugVariables analysis. void MachineRegisterInfo::markUsesInDebugValueAsUndef(Register Reg) const { - // Mark any DBG_VALUE that uses Reg as undef (but don't delete it.) + // Mark any DBG_VALUE* that uses Reg as undef (but don't delete it.) // We use make_early_inc_range because setReg invalidates the iterator. for (MachineInstr &UseMI : llvm::make_early_inc_range(use_instructions(Reg))) { - if (UseMI.isDebugValue()) - UseMI.getDebugOperandForReg(Reg)->setReg(0U); + if (UseMI.isDebugValue() && UseMI.hasDebugOperandForReg(Reg)) + UseMI.setDebugValueUndef(); } } |