diff options
| -rw-r--r-- | lib/CodeGen/SimpleRegisterCoalescing.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/CodeGen/SimpleRegisterCoalescing.cpp b/lib/CodeGen/SimpleRegisterCoalescing.cpp index f3ffc69ccc..86dca11519 100644 --- a/lib/CodeGen/SimpleRegisterCoalescing.cpp +++ b/lib/CodeGen/SimpleRegisterCoalescing.cpp @@ -2449,6 +2449,8 @@ bool SimpleRegisterCoalescing::runOnMachineFunction(MachineFunction &fn) { if (!MO.isReg()) continue; unsigned Reg = MO.getReg(); + if (!Reg) + continue; if (TargetRegisterInfo::isVirtualRegister(Reg)) DeadDefs.push_back(Reg); if (MO.isDead()) |