Index: clang/lib/Basic/Targets/SPIR.h
===================================================================
--- clang/lib/Basic/Targets/SPIR.h
+++ clang/lib/Basic/Targets/SPIR.h
@@ -117,6 +117,11 @@
     return TargetInfo::VoidPtrBuiltinVaList;
   }
 
+  Optional<unsigned>
+  getDWARFAddressSpace(unsigned AddressSpace) const override {
+    return AddressSpace;
+  }
+
   CallingConvCheckResult checkCallingConvention(CallingConv CC) const override {
     return (CC == CC_SpirFunction || CC == CC_OpenCLKernel) ? CCCR_OK
                                                             : CCCR_Warning;
Index: clang/test/CodeGenOpenCL/spir-debug-info-pointer-address-space.cl
===================================================================
--- /dev/null
+++ clang/test/CodeGenOpenCL/spir-debug-info-pointer-address-space.cl
@@ -0,0 +1,128 @@
+// RUN: %clang_cc1 -cl-std=CL2.0 -debug-info-kind=limited -dwarf-version=5 -emit-llvm -O0 -triple spir-unknown-unknown -o - %s | FileCheck %s
+// RUN: %clang_cc1 -cl-std=CL2.0 -debug-info-kind=limited -dwarf-version=5 -emit-llvm -O0 -triple spir64-unknown-unknown -o - %s | FileCheck %s
+            
+// CHECK-DAG: ![[DWARF_ADDRESS_SPACE_GLOBAL:[0-9]+]] = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !{{[0-9]+}}, size: {{[0-9]+}}, dwarfAddressSpace: 1)
+// CHECK-DAG: ![[DWARF_ADDRESS_SPACE_CONSTANT:[0-9]+]] = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !{{[0-9]+}}, size: {{[0-9]+}}, dwarfAddressSpace: 2)
+// CHECK-DAG: ![[DWARF_ADDRESS_SPACE_LOCAL:[0-9]+]] = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !{{[0-9]+}}, size: {{[0-9]+}}, dwarfAddressSpace: 3)
+// CHECK-DAG: ![[DWARF_ADDRESS_SPACE_PRIVATE:[0-9]+]] = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !{{[0-9]+}}, size: {{[0-9]+}}, dwarfAddressSpace: 0)
+// CHECK-DAG: ![[DWARF_ADDRESS_SPACE_GENERIC:[0-9]+]] = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !{{[0-9]+}}, size: {{[0-9]+}}, dwarfAddressSpace: 4)
+
+// CHECK-DAG: distinct !DIGlobalVariable(name: "FileVar0", scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, type: ![[DWARF_ADDRESS_SPACE_GLOBAL]], isLocal: false, isDefinition: true)
+global int *FileVar0;
+// CHECK-DAG: distinct !DIGlobalVariable(name: "FileVar1", scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, type: ![[DWARF_ADDRESS_SPACE_CONSTANT]], isLocal: false, isDefinition: true)
+constant int *FileVar1;
+// CHECK-DAG: distinct !DIGlobalVariable(name: "FileVar2", scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, type: ![[DWARF_ADDRESS_SPACE_LOCAL]], isLocal: false, isDefinition: true)
+local int *FileVar2;
+// CHECK-DAG: distinct !DIGlobalVariable(name: "FileVar3", scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, type: ![[DWARF_ADDRESS_SPACE_PRIVATE]], isLocal: false, isDefinition: true)
+private int *FileVar3;
+// CHECK-DAG: distinct !DIGlobalVariable(name: "FileVar4", scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, type: ![[DWARF_ADDRESS_SPACE_GENERIC]], isLocal: false, isDefinition: true)
+int *FileVar4;
+
+// CHECK-DAG: distinct !DIGlobalVariable(name: "FileVar5", scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, type: ![[DWARF_ADDRESS_SPACE_GLOBAL]], isLocal: false, isDefinition: true)
+global int *global FileVar5;
+// CHECK-DAG: distinct !DIGlobalVariable(name: "FileVar6", scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, type: ![[DWARF_ADDRESS_SPACE_CONSTANT]], isLocal: false, isDefinition: true)
+constant int *global FileVar6;
+// CHECK-DAG: distinct !DIGlobalVariable(name: "FileVar7", scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, type: ![[DWARF_ADDRESS_SPACE_LOCAL]], isLocal: false, isDefinition: true)
+local int *global FileVar7;
+// CHECK-DAG: distinct !DIGlobalVariable(name: "FileVar8", scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, type: ![[DWARF_ADDRESS_SPACE_PRIVATE]], isLocal: false, isDefinition: true)
+private int *global FileVar8;
+// CHECK-DAG: distinct !DIGlobalVariable(name: "FileVar9", scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, type: ![[DWARF_ADDRESS_SPACE_GENERIC]], isLocal: false, isDefinition: true)
+int *global FileVar9;
+
+// CHECK-DAG: distinct !DIGlobalVariable(name: "FileVar10", scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, type: ![[DWARF_ADDRESS_SPACE_GLOBAL]], isLocal: false, isDefinition: true)
+global int *constant FileVar10 = 0;
+// CHECK-DAG: distinct !DIGlobalVariable(name: "FileVar11", scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, type: ![[DWARF_ADDRESS_SPACE_CONSTANT]], isLocal: false, isDefinition: true)
+constant int *constant FileVar11 = 0;
+// CHECK-DAG: distinct !DIGlobalVariable(name: "FileVar12", scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, type: ![[DWARF_ADDRESS_SPACE_LOCAL]], isLocal: false, isDefinition: true)
+local int *constant FileVar12 = 0;
+// CHECK-DAG: distinct !DIGlobalVariable(name: "FileVar13", scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, type: ![[DWARF_ADDRESS_SPACE_PRIVATE]], isLocal: false, isDefinition: true)
+private int *constant FileVar13 = 0;
+// CHECK-DAG: distinct !DIGlobalVariable(name: "FileVar14", scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, type: ![[DWARF_ADDRESS_SPACE_GENERIC]], isLocal: false, isDefinition: true)
+int *constant FileVar14 = 0;
+
+kernel void kernel1(
+    // CHECK-DAG: !DILocalVariable(name: "KernelArg0", arg: {{[0-9]+}}, scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, type: ![[DWARF_ADDRESS_SPACE_GLOBAL]])
+    global int *KernelArg0,
+    // CHECK-DAG: !DILocalVariable(name: "KernelArg1", arg: {{[0-9]+}}, scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, type: ![[DWARF_ADDRESS_SPACE_CONSTANT]])
+    constant int *KernelArg1,
+    // CHECK-DAG: !DILocalVariable(name: "KernelArg2", arg: {{[0-9]+}}, scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, type: ![[DWARF_ADDRESS_SPACE_LOCAL]])
+    local int *KernelArg2) {
+  private int *Tmp0;
+  int *Tmp1;
+
+  // CHECK-DAG: !DILocalVariable(name: "FuncVar0", scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, type: ![[DWARF_ADDRESS_SPACE_GLOBAL]])
+  global int *FuncVar0 = KernelArg0;
+  // CHECK-DAG: !DILocalVariable(name: "FuncVar1", scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, type: ![[DWARF_ADDRESS_SPACE_CONSTANT]])
+  constant int *FuncVar1 = KernelArg1;
+  // CHECK-DAG: !DILocalVariable(name: "FuncVar2", scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, type: ![[DWARF_ADDRESS_SPACE_LOCAL]])
+  local int *FuncVar2 = KernelArg2;
+  // CHECK-DAG: !DILocalVariable(name: "FuncVar3", scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, type: ![[DWARF_ADDRESS_SPACE_PRIVATE]])
+  private int *FuncVar3 = Tmp0;
+  // CHECK-DAG: !DILocalVariable(name: "FuncVar4", scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, type: ![[DWARF_ADDRESS_SPACE_GENERIC]])
+  int *FuncVar4 = Tmp1;
+
+  // CHECK-DAG: distinct !DIGlobalVariable(name: "FuncVar5", scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, type: ![[DWARF_ADDRESS_SPACE_GLOBAL]], isLocal: true, isDefinition: true)
+  global int *constant FuncVar5 = 0;
+  // CHECK-DAG: distinct !DIGlobalVariable(name: "FuncVar6", scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, type: ![[DWARF_ADDRESS_SPACE_CONSTANT]], isLocal: true, isDefinition: true)
+  constant int *constant FuncVar6 = 0;
+  // CHECK-DAG: distinct !DIGlobalVariable(name: "FuncVar7", scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, type: ![[DWARF_ADDRESS_SPACE_LOCAL]], isLocal: true, isDefinition: true)
+  local int *constant FuncVar7 = 0;
+  // CHECK-DAG: distinct !DIGlobalVariable(name: "FuncVar8", scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, type: ![[DWARF_ADDRESS_SPACE_PRIVATE]], isLocal: true, isDefinition: true)
+  private int *constant FuncVar8 = 0;
+  // CHECK-DAG: distinct !DIGlobalVariable(name: "FuncVar9", scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, type: ![[DWARF_ADDRESS_SPACE_GENERIC]], isLocal: true, isDefinition: true)
+  int *constant FuncVar9 = 0;
+
+  // CHECK-DAG: distinct !DIGlobalVariable(name: "FuncVar10", scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, type: ![[DWARF_ADDRESS_SPACE_GLOBAL]], isLocal: true, isDefinition: true)
+  global int *local FuncVar10; FuncVar10 = KernelArg0;
+  // CHECK-DAG: distinct !DIGlobalVariable(name: "FuncVar11", scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, type: ![[DWARF_ADDRESS_SPACE_CONSTANT]], isLocal: true, isDefinition: true)
+  constant int *local FuncVar11; FuncVar11 = KernelArg1;
+  // CHECK-DAG: distinct !DIGlobalVariable(name: "FuncVar12", scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, type: ![[DWARF_ADDRESS_SPACE_LOCAL]], isLocal: true, isDefinition: true)
+  local int *local FuncVar12; FuncVar12 = KernelArg2;
+  // CHECK-DAG: distinct !DIGlobalVariable(name: "FuncVar13", scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, type: ![[DWARF_ADDRESS_SPACE_PRIVATE]], isLocal: true, isDefinition: true)
+  private int *local FuncVar13; FuncVar13 = Tmp0;
+  // CHECK-DAG: distinct !DIGlobalVariable(name: "FuncVar14", scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, type: ![[DWARF_ADDRESS_SPACE_GENERIC]], isLocal: true, isDefinition: true)
+  int *local FuncVar14; FuncVar14 = Tmp1;
+
+  // CHECK-DAG: !DILocalVariable(name: "FuncVar15", scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, type: ![[DWARF_ADDRESS_SPACE_GLOBAL]])
+  global int *private FuncVar15 = KernelArg0;
+  // CHECK-DAG: !DILocalVariable(name: "FuncVar16", scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, type: ![[DWARF_ADDRESS_SPACE_CONSTANT]])
+  constant int *private FuncVar16 = KernelArg1;
+  // CHECK-DAG: !DILocalVariable(name: "FuncVar17", scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, type: ![[DWARF_ADDRESS_SPACE_LOCAL]])
+  local int *private FuncVar17 = KernelArg2;
+  // CHECK-DAG: !DILocalVariable(name: "FuncVar18", scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, type: ![[DWARF_ADDRESS_SPACE_PRIVATE]])
+  private int *private FuncVar18 = Tmp0;
+  // CHECK-DAG: !DILocalVariable(name: "FuncVar19", scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, type: ![[DWARF_ADDRESS_SPACE_GENERIC]])
+  int *private FuncVar19 = Tmp1;
+}
+
+struct FileStruct0 {
+  // CHECK-DAG: !DIDerivedType(tag: DW_TAG_member, name: "StructMem0", scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, baseType: ![[DWARF_ADDRESS_SPACE_GLOBAL]], size: {{[0-9]+}})
+  global int *StructMem0;
+  // CHECK-DAG: !DIDerivedType(tag: DW_TAG_member, name: "StructMem1", scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, baseType: ![[DWARF_ADDRESS_SPACE_CONSTANT]], size: {{[0-9]+}}, offset: {{[0-9]+}})
+  constant int *StructMem1;
+  // CHECK-DAG: !DIDerivedType(tag: DW_TAG_member, name: "StructMem2", scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, baseType: ![[DWARF_ADDRESS_SPACE_LOCAL]], size: {{[0-9]+}}, offset: {{[0-9]+}})
+  local int *StructMem2;
+  // CHECK-DAG: !DIDerivedType(tag: DW_TAG_member, name: "StructMem3", scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, baseType: ![[DWARF_ADDRESS_SPACE_PRIVATE]], size: {{[0-9]+}}, offset: {{[0-9]+}})
+  private int *StructMem3;
+  // CHECK-DAG: !DIDerivedType(tag: DW_TAG_member, name: "StructMem4", scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, baseType: ![[DWARF_ADDRESS_SPACE_GENERIC]], size: {{[0-9]+}}, offset: {{[0-9]+}})
+  int *StructMem4;
+};
+
+struct FileStruct1 {
+  union {
+    // CHECK-DAG: !DIDerivedType(tag: DW_TAG_member, name: "UnionMem0", scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, baseType: ![[DWARF_ADDRESS_SPACE_GLOBAL]], size: {{[0-9]+}})
+    global int *UnionMem0;
+    // CHECK-DAG: !DIDerivedType(tag: DW_TAG_member, name: "UnionMem1", scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, baseType: ![[DWARF_ADDRESS_SPACE_CONSTANT]], size: {{[0-9]+}})
+    constant int *UnionMem1;
+    // CHECK-DAG: !DIDerivedType(tag: DW_TAG_member, name: "UnionMem2", scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, baseType: ![[DWARF_ADDRESS_SPACE_LOCAL]], size: {{[0-9]+}})
+    local int *UnionMem2;
+    // CHECK-DAG: !DIDerivedType(tag: DW_TAG_member, name: "UnionMem3", scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, baseType: ![[DWARF_ADDRESS_SPACE_PRIVATE]], size: {{[0-9]+}})
+    private int *UnionMem3;
+    // CHECK-DAG: !DIDerivedType(tag: DW_TAG_member, name: "UnionMem4", scope: !{{[0-9]+}}, file: !{{[0-9]+}}, line: {{[0-9]+}}, baseType: ![[DWARF_ADDRESS_SPACE_GENERIC]], size: {{[0-9]+}})
+    int *UnionMem4;
+  };
+  long StructMem0;
+};
+
+kernel void kernel2(global struct FileStruct0 *Kernel2Arg0,
+                    global struct FileStruct1 *Kernel2Arg1) {}