Added sanity check for obviously bogus immediates

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28359 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/Alpha/AlphaAsmPrinter.cpp

@@ -82,6 +82,7 @@ void AlphaAsmPrinter::printOperand(const MachineInstr *MI, int opNum)
     O << TM.getRegisterInfo()->get(MO.getReg()).Name;
   } else if (MO.isImmediate()) {
     O << MO.getImmedValue();
+    assert(MO.getImmedValue() < (1 << 30));
   } else {
     printOp(MO);
   }