1 files changed, 3 insertions, 2 deletions
diff --git a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
index ba6075e91d..c56fc9cfb7 100644
--- a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
+++ b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
@@ -2872,8 +2872,9 @@ static int MatchCoprocessorOperandName(StringRef Name, char CoprocOp) {
       return -1;
     switch (Name[2]) {
     default:  return -1;
-    case '0': return 10;
-    case '1': return 11;
+    // p10 and p11 are invalid for coproc instructions (reserved for FP/NEON)
+    case '0': return CoprocOp == 'p'? -1: 10;
+    case '1': return CoprocOp == 'p'? -1: 11;
     case '2': return 12;
     case '3': return 13;
     case '4': return 14;