diff --git a/llvm/test/MC/AsmParser/directive_fill.s b/llvm/test/MC/AsmParser/directive_fill.s
index 95c7b46baf97d2105b3538060d199540a4bd60d3..60bd468cd34884df1ba3ae6b61dea73a00c1df2b 100644
--- a/llvm/test/MC/AsmParser/directive_fill.s
+++ b/llvm/test/MC/AsmParser/directive_fill.s
@@ -10,3 +10,8 @@ TEST0:
 # CHECK: .short 3
 TEST1:  
         .fill 2, 2, 3
+
+# CHECK: TEST2:
+# CHECK: .quad 4
+TEST2:  
+        .fill 1, 8, 4
diff --git a/llvm/tools/llvm-mc/AsmParser.cpp b/llvm/tools/llvm-mc/AsmParser.cpp
index c8eb7ec2ba6089ddd05212a8abcb21fd37c00850..f67bad164a26f60a7d04f1882aa43f5984daf38f 100644
--- a/llvm/tools/llvm-mc/AsmParser.cpp
+++ b/llvm/tools/llvm-mc/AsmParser.cpp
@@ -981,8 +981,8 @@ bool AsmParser::ParseDirectiveFill() {
   
   Lexer.Lex();
 
-  if (FillSize != 1 && FillSize != 2 && FillSize != 4)
-    return TokError("invalid '.fill' size, expected 1, 2, or 4");
+  if (FillSize != 1 && FillSize != 2 && FillSize != 4 && FillSize != 8)
+    return TokError("invalid '.fill' size, expected 1, 2, 4, or 8");
 
   for (uint64_t i = 0, e = NumValues; i != e; ++i)
     Out.EmitValue(MCValue::get(FillExpr), FillSize);