Index: lib/Target/ARM/MCTargetDesc/ARMELFStreamer.cpp
===================================================================
--- lib/Target/ARM/MCTargetDesc/ARMELFStreamer.cpp
+++ lib/Target/ARM/MCTargetDesc/ARMELFStreamer.cpp
@@ -465,6 +465,7 @@
   void emitPad(int64_t Offset);
   void emitRegSave(const SmallVectorImpl<unsigned> &RegList, bool isVector);
   void emitUnwindRaw(int64_t Offset, const SmallVectorImpl<uint8_t> &Opcodes);
+  void emitFill(const MCExpr &NumBytes, uint64_t FillValue, SMLoc Loc) override;
 
   void ChangeSection(MCSection *Section, const MCExpr *Subsection) override {
     LastMappingSymbols[getCurrentSection().first] = std::move(LastEMSInfo);
@@ -1475,6 +1476,16 @@
   UnwindOpAsm.EmitRaw(Opcodes);
 }
 
+void ARMELFStreamer::emitFill(const MCExpr &NumBytes, uint64_t FillValue,
+                              SMLoc Loc) {
+  if (LastEMSInfo->State == EMS_None) {
+    EmitMappingSymbol("$d");
+    LastEMSInfo->State = EMS_Data;
+  } else
+    EmitDataMappingSymbol();
+  MCObjectStreamer::emitFill(NumBytes, FillValue, Loc);
+}
+
 namespace llvm {
 
 MCTargetStreamer *createARMTargetAsmStreamer(MCStreamer &S,
Index: test/CodeGen/ARM/CheckDataSymbol.ll
===================================================================
--- /dev/null
+++ test/CodeGen/ARM/CheckDataSymbol.ll
@@ -0,0 +1,47 @@
+; RUN: llc -filetype=obj -mtriple=thumbv7-arm-none-eabi -o - %s | llvm-readobj -s -t - | FileCheck %s
+target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
+target triple = "thumbv7-arm-none-eabi"
+
+%struct.S = type { i32 }
+
+@.str = private unnamed_addr constant [4 x i8] c"%p\0A\00", align 1
+@defaultS = internal constant %struct.S zeroinitializer, align 4 #0
+
+define hidden void @f(i8* %p) local_unnamed_addr {
+entry:
+  %0 = tail call i32 (i8*, ...) @__2printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i32 0, i32 0), i8* %p)
+  ret void
+}
+
+define hidden void @g() local_unnamed_addr #1 {
+entry:
+  %0 = tail call i32 (i8*, ...) @__2printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i32 0, i32 0), i8* bitcast (%struct.S* @defaultS to i8*))
+  ret void
+}
+
+define hidden i32 @main() local_unnamed_addr  {
+entry:
+  %0 = tail call i32 (i8*, ...) @__2printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i32 0, i32 0), i8* bitcast (%struct.S* @defaultS to i8*))
+  ret i32 0
+}
+
+declare i32 @__2printf(i8*, ...)
+
+attributes #0 = { "rodata-section"="os_code" }
+attributes #1 = { "implicit-section-name"="os_code" }
+
+; CHECK: Name: $d.{{[0-9]+ \([1-9][0-9]*\)}}
+; CHECK-NEXT: Value: [[POSITION:0x[1-9][0-9]*]]
+; CHECK-NEXT: Size: 0
+; CHECK-NEXT: Binding: Local (0x0)
+; CHECK-NEXT: Type: None (0x0)
+; CHECK-NEXT: Other: 0
+; CHECK-NEXT: Section: os_code (0x6)
+; CHECK: Name: defaultS ({{[1-9][0-9]*}})
+; CHECK-NEXT: Value: [[POSITION]]
+; CHECK-NEXT: Size: 4
+; CHECK-NEXT: Binding: Local (0x0)
+; CHECK-NEXT: Type: Object (0x1)
+; CHECK-NEXT: Other: 0
+; CHECK-NEXT: Section: os_code (0x6)
+; CHECK-NEXT: }
Index: test/CodeGen/ARM/CheckDataSymbol.s
===================================================================
--- /dev/null
+++ test/CodeGen/ARM/CheckDataSymbol.s
@@ -0,0 +1,117 @@
+# RUN: clang -c -target arm-arm-none-eabi -mcpu=cortex-a9 -O2 -mthumb %s -o - | llvm-readobj -s -t - | FileCheck %s
+# CHECK: Name: $d.{{[0-9]+ \([1-9][0-9]*\)}}
+# CHECK-NEXT: Value: [[POSITION:0x[1-9][0-9]*]]
+# CHECK-NEXT: Size: 0
+# CHECK-NEXT: Binding: Local (0x0)
+# CHECK-NEXT: Type: None (0x0)
+# CHECK-NEXT: Other: 0
+# CHECK-NEXT: Section: os_code (0x6)
+# CHECK: Name: defaultS ({{[1-9][0-9]*}})
+# CHECK-NEXT: Value: [[POSITION]]
+# CHECK-NEXT: Size: 4
+# CHECK-NEXT: Binding: Local (0x0)
+# CHECK-NEXT: Type: Object (0x1)
+# CHECK-NEXT: Other: 0
+# CHECK-NEXT: Section: os_code (0x6)
+# CHECK-NEXT: }
+	.text
+	.syntax unified
+	.eabi_attribute	67, "2.09"
+	.cpu	cortex-a9
+	.eabi_attribute	6, 10
+	.eabi_attribute	7, 65
+	.eabi_attribute	8, 1
+	.eabi_attribute	9, 2
+	.fpu	neon-fp16
+	.eabi_attribute	36, 1
+	.eabi_attribute	42, 1
+	.eabi_attribute	34, 0
+	.eabi_attribute	68, 1
+	.eabi_attribute	17, 1
+	.eabi_attribute	20, 1
+	.eabi_attribute	21, 1
+	.eabi_attribute	23, 3
+	.eabi_attribute	24, 1
+	.eabi_attribute	25, 1
+	.eabi_attribute	38, 1
+	.eabi_attribute	18, 4
+	.eabi_attribute	26, 2
+	.eabi_attribute	14, 0
+	.file	"thumb-data.c"
+	.globl	f
+	.p2align	1
+	.type	f,%function
+	.code	16
+	.thumb_func
+f:
+	.fnstart
+	mov	r1, r0
+	movw	r0, :lower16:.L.str
+	movt	r0, :upper16:.L.str
+	b	printf
+.Lfunc_end0:
+	.size	f, .Lfunc_end0-f
+	.cantunwind
+	.fnend
+
+	.section	os_code,"ax",%progbits
+	.globl	g
+	.p2align	1
+	.type	g,%function
+	.code	16
+	.thumb_func
+g:
+	.fnstart
+	movw	r0, :lower16:.L.str
+	movw	r1, :lower16:defaultS
+	movt	r0, :upper16:.L.str
+	movt	r1, :upper16:defaultS
+	b	printf
+.Lfunc_end1:
+	.size	g, .Lfunc_end1-g
+	.cantunwind
+	.fnend
+
+	.text
+	.globl	main
+	.p2align	1
+	.type	main,%function
+	.code	16
+	.thumb_func
+main:
+	.fnstart
+	.save	{r7, lr}
+	push	{r7, lr}
+	.setfp	r7, sp
+	mov	r7, sp
+	movw	r0, :lower16:.L.str
+	movw	r1, :lower16:defaultS
+	movt	r0, :upper16:.L.str
+	movt	r1, :upper16:defaultS
+	bl	printf
+	movs	r0, #0
+	pop	{r7, pc}
+.Lfunc_end2:
+	.size	main, .Lfunc_end2-main
+	.cantunwind
+	.fnend
+
+	.type	.L.str,%object
+	.section	.rodata.str1.1,"aMS",%progbits,1
+.L.str:
+	.asciz	"%p\n"
+	.size	.L.str, 4
+
+	.type	defaultS,%object
+	.section	os_code,"ax",%progbits
+	.p2align	2
+defaultS:
+	.zero	4
+	.size	defaultS, 4
+
+
+	.ident	"clang version 8.0.0 (trunk 340934)"
+	.section	".note.GNU-stack","",%progbits
+	.addrsig
+	.addrsig_sym defaultS
+	.eabi_attribute	30, 1