Index: lldb/trunk/lit/Breakpoint/Inputs/debug_addrx.yaml
===================================================================
--- lldb/trunk/lit/Breakpoint/Inputs/debug_addrx.yaml
+++ lldb/trunk/lit/Breakpoint/Inputs/debug_addrx.yaml
@@ -0,0 +1,57 @@
+--- !ELF
+FileHeader:      
+  Class:           ELFCLASS64
+  Data:            ELFDATA2LSB
+  Type:            ET_EXEC
+  Machine:         EM_X86_64
+  Entry:           0x0000000000201000
+Sections:        
+  - Name:            .text
+    Type:            SHT_PROGBITS
+    Flags:           [ SHF_ALLOC, SHF_EXECINSTR ]
+    Address:         0x0000000000201000
+    AddressAlign:    0x0000000000000010
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+  - Name:            .debug_str_offsets
+    Type:            SHT_PROGBITS
+    AddressAlign:    0x0000000000000001
+    Content:         44000000050000006B0000005F0000003A0000000E0000001A0000001E000000930000002E0000001600000067000000050000009A0000008E000000000000006900000095000000
+  - Name:            .debug_str
+    Type:            SHT_PROGBITS
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+    Type:            SHT_PROGBITS
+    AddressAlign:    0x0000000000000001
+    Content:         E010200000000000E010200000000000030011009FE010200000000000E1102000000000000500110023019F00000000000000000000000000000000
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+    Type:            SHT_PROGBITS
+    AddressAlign:    0x0000000000000001
+    Content:         C8000000050001080000000001000400010800000000000000020800000000000000000000000C0000000C000000022E000000040910010303035C0000000004066C0000000104080507080105010210002E000000067000000000000761000000086700000005096C0000000A040504072E0000000B000100000001578600000008480000000C0DC60000000D000000000601096C000000000E010100000001570A0B010D0F0E010D2E0000000010020300000001570C01116C000000110F01122E00000000072E00000000
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+    Type:            SHT_PROGBITS
+    AddressAlign:    0x0000000000000001
+    Content:         27000000050008000000000007E0102000000000000107F010200000000000010700112000000000000300
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+    AddressAlign:    0x0000000000000001
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+  - Name:            .debug_addr
+    Type:            SHT_PROGBITS
+    AddressAlign:    0x0000000000000001
+    Content:         1C00000005000800E010200000000000F0102000000000000011200000000000
+  - Name:            .debug_line
+    Type:            SHT_PROGBITS
+    AddressAlign:    0x0000000000000001
+    Content:         97000000050008004C000000010101FB0E0D00010101010000000100000101011F010000000003011F020F051E02250000000066F622AD4EB40BCEA506478235D9D438250000000066F622AD4EB40BCEA506478235D9D438000902E0102000000000001905010A150201000101000902F010200000000000030C0105010A140201000101000902001120000000000003100105030A170203000101
+  - Name:            .debug_line_str
+    Type:            SHT_PROGBITS
+    Flags:           [ SHF_MERGE, SHF_STRINGS ]
+    AddressAlign:    0x0000000000000001
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+Symbols:
Index: lldb/trunk/lit/Breakpoint/debug_addrx.test
===================================================================
--- lldb/trunk/lit/Breakpoint/debug_addrx.test
+++ lldb/trunk/lit/Breakpoint/debug_addrx.test
@@ -0,0 +1,30 @@
+# RUN: yaml2obj %p/Inputs/debug_addrx.yaml > %ttest
+# RUN: lldb-test breakpoints %ttest %s | FileCheck %s
+
+# The following code and invocation were used.
+# clang -gdwarf-5 test.cc -o test_v5 -fuse-ld=lld -fno-rtti -O2 -ffunction-sections
+# Then output was converted to yaml and reduced.
+#
+# struct A {
+#   void foo() {};
+# };
+# 
+# void bar(struct A a) {
+#    a.foo();
+# }
+#
+# int main() {
+#  A objA;
+#  bar(objA);
+#
+#  return 0;
+# }
+#
+# clang and LLD versions were 8.0.0 (trunk 344834)
+#
+# Output file contains DW_FORM_addrx forms.
+
+b bar
+
+# CHECK-LABEL: b bar
+# CHECK: Address: {{.*}}`bar(A) at test.cc:15:1
Index: lldb/trunk/source/Plugins/SymbolFile/DWARF/DWARFDebugInfoEntry.cpp
===================================================================
--- lldb/trunk/source/Plugins/SymbolFile/DWARF/DWARFDebugInfoEntry.cpp
+++ lldb/trunk/source/Plugins/SymbolFile/DWARF/DWARFDebugInfoEntry.cpp
@@ -118,6 +118,7 @@
             break;
 
           // 1 byte values
+          case DW_FORM_addrx1:
           case DW_FORM_data1:
           case DW_FORM_flag:
           case DW_FORM_ref1:
@@ -126,17 +127,21 @@
             break;
 
           // 2 byte values
+          case DW_FORM_addrx2:
           case DW_FORM_data2:
           case DW_FORM_ref2:
           case DW_FORM_strx2:
             form_size = 2;
             break;
 
+          // 3 byte values
+          case DW_FORM_addrx3:
           case DW_FORM_strx3:
             form_size = 3;
             break;
 
           // 4 byte values
+          case DW_FORM_addrx4:
           case DW_FORM_data4:
           case DW_FORM_ref4:
           case DW_FORM_strx4:
@@ -151,6 +156,7 @@
             break;
 
           // signed or unsigned LEB 128 values
+          case DW_FORM_addrx:
           case DW_FORM_sdata:
           case DW_FORM_udata:
           case DW_FORM_ref_udata:
Index: lldb/trunk/source/Plugins/SymbolFile/DWARF/DWARFFormValue.cpp
===================================================================
--- lldb/trunk/source/Plugins/SymbolFile/DWARF/DWARFFormValue.cpp
+++ lldb/trunk/source/Plugins/SymbolFile/DWARF/DWARFFormValue.cpp
@@ -233,18 +233,23 @@
       m_value.value.uval =
           data.GetMaxU64(offset_ptr, DWARFUnit::IsDWARF64(m_cu) ? 8 : 4);
       break;
+    case DW_FORM_addrx:
     case DW_FORM_strx:
       m_value.value.uval = data.GetULEB128(offset_ptr);
       break;
+    case DW_FORM_addrx1:
     case DW_FORM_strx1:
       m_value.value.uval = data.GetU8(offset_ptr);
       break;
+    case DW_FORM_addrx2:
     case DW_FORM_strx2:
       m_value.value.uval = data.GetU16(offset_ptr);
       break;
+    case DW_FORM_addrx3:
     case DW_FORM_strx3:
       m_value.value.uval = data.GetMaxU64(offset_ptr, 3);
       break;
+    case DW_FORM_addrx4:
     case DW_FORM_strx4:
       m_value.value.uval = data.GetU32(offset_ptr);
       break;
@@ -376,6 +381,7 @@
     return true;
 
     // 1 byte values
+    case DW_FORM_addrx1:
     case DW_FORM_data1:
     case DW_FORM_flag:
     case DW_FORM_ref1:
@@ -384,6 +390,7 @@
       return true;
 
     // 2 byte values
+    case DW_FORM_addrx2:
     case DW_FORM_data2:
     case DW_FORM_ref2:
     case DW_FORM_strx2:
@@ -391,6 +398,7 @@
       return true;
 
     // 3 byte values
+    case DW_FORM_addrx3:
     case DW_FORM_strx3:
       *offset_ptr += 3;
       return true;
@@ -403,6 +411,7 @@
       return true;
 
     // 4 byte values
+    case DW_FORM_addrx4:
     case DW_FORM_data4:
     case DW_FORM_ref4:
     case DW_FORM_strx4:
@@ -417,6 +426,7 @@
       return true;
 
     // signed or unsigned LEB 128 values
+    case DW_FORM_addrx:
     case DW_FORM_sdata:
     case DW_FORM_udata:
     case DW_FORM_ref_udata:
@@ -625,7 +635,9 @@
     return Unsigned();
 
   assert(m_cu);
-  assert(m_form == DW_FORM_GNU_addr_index);
+  assert(m_form == DW_FORM_GNU_addr_index || m_form == DW_FORM_addrx ||
+         m_form == DW_FORM_addrx1 || m_form == DW_FORM_addrx2 ||
+         m_form == DW_FORM_addrx3 || m_form == DW_FORM_addrx4);
 
   if (!symbol_file)
     return 0;
@@ -798,6 +810,7 @@
 bool DWARFFormValue::FormIsSupported(dw_form_t form) {
   switch (form) {
     case DW_FORM_addr:
+    case DW_FORM_addrx:
     case DW_FORM_block2:
     case DW_FORM_block4:
     case DW_FORM_data2:
Index: lldb/trunk/source/Plugins/SymbolFile/DWARF/DWARFUnit.h
===================================================================
--- lldb/trunk/source/Plugins/SymbolFile/DWARF/DWARFUnit.h
+++ lldb/trunk/source/Plugins/SymbolFile/DWARF/DWARFUnit.h
@@ -111,8 +111,9 @@
   dw_addr_t GetBaseAddress() const { return m_base_addr; }
   dw_addr_t GetAddrBase() const { return m_addr_base; }
   dw_addr_t GetRangesBase() const { return m_ranges_base; }
-  void SetAddrBase(dw_addr_t addr_base, dw_addr_t ranges_base,
-                   dw_offset_t base_obj_offset);
+  void SetAddrBase(dw_addr_t addr_base);
+  void SetRangesBase(dw_addr_t ranges_base);
+  void SetBaseObjOffset(dw_offset_t base_obj_offset);
   void BuildAddressRangeTable(SymbolFileDWARF *dwarf,
                               DWARFDebugAranges *debug_aranges);
 
Index: lldb/trunk/source/Plugins/SymbolFile/DWARF/DWARFUnit.cpp
===================================================================
--- lldb/trunk/source/Plugins/SymbolFile/DWARF/DWARFUnit.cpp
+++ lldb/trunk/source/Plugins/SymbolFile/DWARF/DWARFUnit.cpp
@@ -307,6 +307,9 @@
 
 // m_die_array_mutex must be already held as read/write.
 void DWARFUnit::AddUnitDIE(const DWARFDebugInfoEntry &cu_die) {
+  SetAddrBase(
+      cu_die.GetAttributeValueAsUnsigned(m_dwarf, this, DW_AT_addr_base, 0));
+
   uint64_t base_addr = cu_die.GetAttributeValueAsAddress(
       m_dwarf, this, DW_AT_low_pc, LLDB_INVALID_ADDRESS);
   if (base_addr == LLDB_INVALID_ADDRESS)
@@ -339,9 +342,13 @@
 
   dw_addr_t addr_base =
       cu_die.GetAttributeValueAsUnsigned(m_dwarf, this, DW_AT_GNU_addr_base, 0);
+  dwo_cu->SetAddrBase(addr_base);
+
   dw_addr_t ranges_base = cu_die.GetAttributeValueAsUnsigned(
       m_dwarf, this, DW_AT_GNU_ranges_base, 0);
-  dwo_cu->SetAddrBase(addr_base, ranges_base, m_offset);
+  dwo_cu->SetRangesBase(ranges_base);
+
+  dwo_cu->SetBaseObjOffset(m_offset);
 }
 
 DWARFDIE DWARFUnit::LookupAddress(const dw_addr_t address) {
@@ -399,11 +406,13 @@
   return m_abbrevs ? m_abbrevs->GetOffset() : DW_INVALID_OFFSET;
 }
 
-void DWARFUnit::SetAddrBase(dw_addr_t addr_base,
-                            dw_addr_t ranges_base,
-                            dw_offset_t base_obj_offset) {
-  m_addr_base = addr_base;
+void DWARFUnit::SetAddrBase(dw_addr_t addr_base) { m_addr_base = addr_base; }
+
+void DWARFUnit::SetRangesBase(dw_addr_t ranges_base) {
   m_ranges_base = ranges_base;
+}
+
+void DWARFUnit::SetBaseObjOffset(dw_offset_t base_obj_offset) {
   m_base_obj_offset = base_obj_offset;
 }