diff --git a/llvm/docs/ReleaseNotes.rst b/llvm/docs/ReleaseNotes.rst
--- a/llvm/docs/ReleaseNotes.rst
+++ b/llvm/docs/ReleaseNotes.rst
@@ -167,6 +167,8 @@
 Changes to the Debug Info
 ---------------------------------
 
+* TODO: note new minimum GDB version?
+
 During this release ...
 
 Changes to the LLVM tools
diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -428,8 +428,7 @@
   // https://sourceware.org/bugzilla/show_bug.cgi?id=11616
   UseGNUTLSOpcode = tuneForGDB() || DwarfVersion < 3;
 
-  // GDB does not fully support the DWARF 4 representation for bitfields.
-  UseDWARF2Bitfields = (DwarfVersion < 4) || tuneForGDB();
+  UseDWARF2Bitfields = (DwarfVersion < 4);
 
   // The DWARF v5 string offsets table has - possibly shared - contributions
   // from each compile and type unit each preceded by a header. The string
diff --git a/llvm/test/DebugInfo/X86/bitfields-dwarf4.ll b/llvm/test/DebugInfo/X86/bitfields-dwarf4.ll
--- a/llvm/test/DebugInfo/X86/bitfields-dwarf4.ll
+++ b/llvm/test/DebugInfo/X86/bitfields-dwarf4.ll
@@ -1,8 +1,5 @@
 ; RUN: llc -mtriple x86_64-apple-macosx -O0 -filetype=obj -o - %s \
 ; RUN: | llvm-dwarfdump -v -debug-info - | FileCheck %s
-; RUN: llc -mtriple x86_64-gnu-linux -O0 -filetype=obj -o - %s \
-; RUN: | llvm-dwarfdump -v -debug-info - | FileCheck %s --check-prefix=LINUX
-; LINUX-NOT: DW_AT_data_bit_offset
 ;
 ; Generated from:
 ;   #include <stdint.h>
diff --git a/llvm/test/DebugInfo/X86/packed_bitfields.ll b/llvm/test/DebugInfo/X86/packed_bitfields.ll
--- a/llvm/test/DebugInfo/X86/packed_bitfields.ll
+++ b/llvm/test/DebugInfo/X86/packed_bitfields.ll
@@ -1,7 +1,5 @@
 ; RUN: llc -dwarf-version=2 -mtriple x86_64-apple-macosx -O0 -filetype=obj -o %t_2_le.o %s
 ; RUN: llvm-dwarfdump -v -debug-info %t_2_le.o | FileCheck %s
-; RUN: llc -dwarf-version=4 -debugger-tune=gdb -mtriple x86_64-apple-macosx -O0 -filetype=obj -o %t_4_le.o %s
-; RUN: llvm-dwarfdump -v -debug-info %t_4_le.o | FileCheck %s
 
 ; Produced at -O0 from:
 ; struct {