Index: llvm/trunk/lib/Target/AArch64/MCTargetDesc/AArch64ELFStreamer.cpp
===================================================================
--- llvm/trunk/lib/Target/AArch64/MCTargetDesc/AArch64ELFStreamer.cpp
+++ llvm/trunk/lib/Target/AArch64/MCTargetDesc/AArch64ELFStreamer.cpp
@@ -154,6 +154,11 @@
     MCELFStreamer::EmitValueImpl(Value, Size, Loc);
   }
 
+  void emitFill(const MCExpr &NumBytes, uint64_t FillValue,
+                                  SMLoc Loc) override {
+    EmitDataMappingSymbol();
+    MCObjectStreamer::emitFill(NumBytes, FillValue, Loc);
+  }
 private:
   enum ElfMappingSymbol {
     EMS_None,
Index: llvm/trunk/test/MC/AArch64/CheckDataSymbol.s
===================================================================
--- llvm/trunk/test/MC/AArch64/CheckDataSymbol.s
+++ llvm/trunk/test/MC/AArch64/CheckDataSymbol.s
@@ -0,0 +1,15 @@
+# RUN: llvm-mc -filetype=obj -assemble \
+# RUN: -triple=aarch64- %s -o - \
+# RUN: | llvm-readobj -s -t - | FileCheck %s
+# CHECK:     Name: $d.1 ({{[1-9][0-9]+}})
+# CHECK-NEXT:     Value: 0x4
+# CHECK-NEXT:     Size: 0
+# CHECK-NEXT:     Binding: Local (0x0)
+# CHECK-NEXT:     Type: None (0x0)
+# CHECK-NEXT:     Other: 0
+# CHECK-NEXT:     Section: .text (0x2)
+# CHECK-NEXT:   }
+
+.text
+nop
+.zero 4