Thumb parsing and encoding for STM.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138345 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
index 931bd36..40efea7 100644
--- a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
+++ b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
@@ -3149,6 +3149,13 @@
                    "registers must be in range r0-r7 or lr");
     break;
   }
+  case ARM::tSTMIA_UPD: {
+    bool listContainsBase;
+    if (checkLowRegisterList(Inst, 3, 0, 0, listContainsBase))
+      return Error(Operands[4]->getStartLoc(),
+                   "registers must be in range r0-r7");
+    break;
+  }
   }
 
   return false;