Take a stab at fixing the llvm-x86_64-linux-checks failure.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134287 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/MachineInstr.cpp b/lib/CodeGen/MachineInstr.cpp
index 0995106..77828c9 100644
--- a/lib/CodeGen/MachineInstr.cpp
+++ b/lib/CodeGen/MachineInstr.cpp
@@ -194,6 +194,8 @@
            getSubReg() == Other.getSubReg();
   case MachineOperand::MO_Immediate:
     return getImm() == Other.getImm();
+  case MachineOperand::MO_CImmediate:
+    return getCImm() == Other.getCImm();
   case MachineOperand::MO_FPImmediate:
     return getFPImm() == Other.getFPImm();
   case MachineOperand::MO_MachineBasicBlock: