diff --git a/debuginfo-tests/CMakeLists.txt b/debuginfo-tests/CMakeLists.txt
--- a/debuginfo-tests/CMakeLists.txt
+++ b/debuginfo-tests/CMakeLists.txt
@@ -22,6 +22,16 @@
   not
   )
 
+if ("mlir" IN_LIST LLVM_ENABLE_PROJECTS)
+  add_llvm_executable(check-gdb-mlir-support
+        llvm-prettyprinters/gdb/mlir-support.cpp
+  )
+  target_include_directories(check-gdb-mlir-support PRIVATE ${LLVM_EXTERNAL_MLIR_SOURCE_DIR}/include)
+  target_link_libraries(check-gdb-mlir-support PRIVATE MLIRIR)
+  list(APPEND DEBUGINFO_TEST_DEPS check-gdb-mlir-support)
+  set(MLIR_SOURCE_DIR  ${LLVM_EXTERNAL_MLIR_SOURCE_DIR})
+endif()
+
 if("compiler-rt" IN_LIST LLVM_ENABLE_PROJECTS)
   # llgdb-tests/asan.c and other asan* files.
   if(TARGET asan)
diff --git a/debuginfo-tests/lit.cfg.py b/debuginfo-tests/lit.cfg.py
--- a/debuginfo-tests/lit.cfg.py
+++ b/debuginfo-tests/lit.cfg.py
@@ -157,6 +157,6 @@
         if apple_lldb_vers < 1000:
             config.available_features.add('apple-lldb-pre-1000')
 
-llvm_config.feature_config([('--build-mode', {
-    'Debug|RelWithDebInfo': 'debug-info'
-})])
+llvm_config.feature_config(
+    [('--build-mode', {'Debug|RelWithDebInfo': 'debug-info'})]
+)
diff --git a/debuginfo-tests/lit.site.cfg.py.in b/debuginfo-tests/lit.site.cfg.py.in
--- a/debuginfo-tests/lit.site.cfg.py.in
+++ b/debuginfo-tests/lit.site.cfg.py.in
@@ -20,6 +20,8 @@
 config.host_arch = "@HOST_ARCH@"
 config.is_msvc = lit.util.pythonize_bool("@MSVC@")
 
+config.mlir_src_root = "@MLIR_SOURCE_DIR@"
+
 config.llvm_use_sanitizer = "@LLVM_USE_SANITIZER@"
 
 config.python3_executable = "@Python3_EXECUTABLE@"
diff --git a/debuginfo-tests/llvm-prettyprinters/gdb/lit.local.cfg b/debuginfo-tests/llvm-prettyprinters/gdb/lit.local.cfg
--- a/debuginfo-tests/llvm-prettyprinters/gdb/lit.local.cfg
+++ b/debuginfo-tests/llvm-prettyprinters/gdb/lit.local.cfg
@@ -4,6 +4,10 @@
 if 'native' not in config.available_features or lit.util.which('gdb') is None:
     config.unsupported = True
 
+if config.mlir_src_root:
+  config.substitutions.append(("%mlir_src_root", config.mlir_src_root))
+  config.available_features.add('mlir')
+
 config.suffixes = ['.gdb']
 
 
diff --git a/debuginfo-tests/llvm-prettyprinters/gdb/llvm-support.cpp b/debuginfo-tests/llvm-prettyprinters/gdb/llvm-support.cpp
--- a/debuginfo-tests/llvm-prettyprinters/gdb/llvm-support.cpp
+++ b/debuginfo-tests/llvm-prettyprinters/gdb/llvm-support.cpp
@@ -53,8 +53,13 @@
   return Result;
 }();
 
-// Check expected instances to avoid compile errors.
-auto CheckExpectedValue = static_cast<bool>(ExpectedValue);
-auto CheckExpectedError = static_cast<bool>(ExpectedError);
-
-int main() { return 0; }
+int main() {
+  // Reference symbols that might otherwise be stripped.
+  ArrayRef[0];
+  MutableArrayRef[0];
+  !ExpectedValue;
+  !ExpectedError;
+  *OptionalValue;
+  *OptionalNone;
+  return 0;
+}
diff --git a/debuginfo-tests/llvm-prettyprinters/gdb/llvm-support.gdb b/debuginfo-tests/llvm-prettyprinters/gdb/llvm-support.gdb
--- a/debuginfo-tests/llvm-prettyprinters/gdb/llvm-support.gdb
+++ b/debuginfo-tests/llvm-prettyprinters/gdb/llvm-support.gdb
@@ -1,4 +1,4 @@
-# RUN: gdb -q -batch -n -iex 'source %llvm_src_root/utils/gdb-scripts/prettyprinters.py' -x %s %llvm_tools_dir/check-gdb-llvm-support | FileCheck %s
+# RUN: gdb -q -batch -n -iex 'source %llvm_src_root/utils/gdb-scripts/prettyprinters.py' -x %s %llvm_tools_dir/check-gdb-llvm-support | FileCheck %s --dump-input=fail
 # REQUIRES: debug-info
 
 break main
diff --git a/debuginfo-tests/llvm-prettyprinters/gdb/mlir-support.cpp b/debuginfo-tests/llvm-prettyprinters/gdb/mlir-support.cpp
new file mode 100644
--- /dev/null
+++ b/debuginfo-tests/llvm-prettyprinters/gdb/mlir-support.cpp
@@ -0,0 +1,41 @@
+#include "mlir/IR/Identifier.h"
+#include "mlir/IR/Location.h"
+#include "mlir/IR/MLIRContext.h"
+#include "mlir/IR/OperationSupport.h"
+#include "mlir/IR/StandardTypes.h"
+
+mlir::MLIRContext Context;
+
+auto Identifier = mlir::Identifier::get("foo", &Context);
+mlir::OperationName OperationName("FooOp", &Context);
+mlir::Value Value({reinterpret_cast<void *>(0x8),
+                   mlir::Value::Kind::TrailingOpResult});
+
+mlir::Type Type(nullptr);
+mlir::Type IndexType = mlir::IndexType::get(&Context);
+mlir::Type IntegerType =
+    mlir::IntegerType::get(3, mlir::IntegerType::Unsigned, &Context);
+mlir::Type FloatType = mlir::Float32Type::get(&Context);
+mlir::Type MemRefType = mlir::MemRefType::get({4, 5}, FloatType);
+mlir::Type UnrankedMemRefType = mlir::UnrankedMemRefType::get(IntegerType, 6);
+mlir::Type VectorType = mlir::VectorType::get({1, 2}, FloatType);
+mlir::Type TupleType =
+    mlir::TupleType::get(mlir::TypeRange({IndexType, FloatType}), &Context);
+
+auto UnknownLoc = mlir::UnknownLoc::get(&Context);
+auto FileLineColLoc = mlir::FileLineColLoc::get("file", 7, 8, &Context);
+auto OpaqueLoc = mlir::OpaqueLoc::get<uintptr_t>(9, &Context);
+auto NameLoc = mlir::NameLoc::get(Identifier, &Context);
+auto CallSiteLoc = mlir::CallSiteLoc::get(FileLineColLoc, OpaqueLoc);
+auto FusedLoc = mlir::FusedLoc::get({FileLineColLoc, NameLoc}, &Context);
+
+mlir::Attribute UnitAttr = mlir::UnitAttr::get(&Context);
+mlir::Attribute FloatAttr = mlir::FloatAttr::get(FloatType, 1.0);
+mlir::Attribute IntegerAttr = mlir::IntegerAttr::get(IntegerType, 10);
+mlir::Attribute TypeAttr = mlir::TypeAttr::get(IndexType);
+mlir::Attribute ArrayAttr = mlir::ArrayAttr::get({UnitAttr}, &Context);
+mlir::Attribute StringAttr = mlir::StringAttr::get("foo", &Context);
+mlir::Attribute ElementsAttr = mlir::DenseElementsAttr::get(
+    VectorType.cast<mlir::ShapedType>(), llvm::ArrayRef<float>{2.0f, 3.0f});
+
+int main() { return 0; }
diff --git a/debuginfo-tests/llvm-prettyprinters/gdb/mlir-support.gdb b/debuginfo-tests/llvm-prettyprinters/gdb/mlir-support.gdb
new file mode 100644
--- /dev/null
+++ b/debuginfo-tests/llvm-prettyprinters/gdb/mlir-support.gdb
@@ -0,0 +1,112 @@
+# RUN: gdb -q -batch -n -iex 'source %mlir_src_root/utils/gdb-scripts/prettyprinters.py' -iex 'source %llvm_src_root/utils/gdb-scripts/prettyprinters.py' -x %s %llvm_tools_dir/check-gdb-mlir-support | FileCheck %s --dump-input=fail
+# REQUIRES: debug-info
+# REQUIRES: mlir
+
+break main
+run
+
+# CHECK: "foo"
+p Identifier
+
+# CHECK: "FooOp"
+p OperationName
+
+# CHECK: 0x8
+# CHECK: TrailingOpResult
+p Value
+
+# CHECK: impl = 0x0
+p Type
+
+# CHECK: cast<mlir::IndexType>
+p IndexType
+
+# CHECK: cast<mlir::IntegerType>
+# CHECK: width = 3
+# CHECK: Unsigned
+p IntegerType
+
+# CHECK: cast<mlir::Float32Type>
+p FloatType
+
+# CHECK: cast<mlir::MemRefType>
+# CHECK: shapeSize = 2
+# CHECK: shapeElements[0] = 4
+# CHECK: shapeElements[1] = 5
+p MemRefType
+
+# CHECK: cast<mlir::UnrankedMemRefType>
+# CHECK: memorySpace = 6
+p UnrankedMemRefType
+
+# CHECK: cast<mlir::VectorType>
+# CHECK: shapeSize = 2
+# CHECK: shapeElements[0] = 1
+# CHECK: shapeElements[1] = 2
+p VectorType
+
+# CHECK: cast<mlir::TupleType>
+# CHECK: numElements = 2
+# CHECK: elements[0]
+# CHECK: mlir::IndexType
+# CHECK: elements[1]
+# CHECK: mlir::Float32Type
+p TupleType
+
+# CHECK: cast<mlir::UnknownLoc>
+p UnknownLoc
+
+# CHECK: cast<mlir::FileLineColLoc>
+# CHECK: filename = "file"
+# CHECK: line = 7
+# CHECK: column = 8
+p FileLineColLoc
+
+# CHECK: cast<mlir::OpaqueLoc>
+# CHECK: underlyingLocation = 9
+p OpaqueLoc
+
+# CHECK: cast<mlir::NameLoc>
+# CHECK: name = "foo"
+# CHECK: mlir::UnknownLoc
+p NameLoc
+
+# CHECK: cast<mlir::CallSiteLoc>
+# CHECK: callee
+# CHECK: mlir::FileLineColLoc
+# CHECK: caller
+# CHECK: mlir::OpaqueLoc
+p CallSiteLoc
+
+# CHECK: cast<mlir::FusedLoc>
+# CHECK: numLocs = 2
+# CHECK: locs[0]
+# CHECK: mlir::FileLineColLoc
+# CHECK: locs[1]
+# CHECK: mlir::NameLoc
+p FusedLoc
+
+# CHECK: cast<mlir::UnitAttr>
+p UnitAttr
+
+# CHECK: cast<mlir::FloatAttr>
+p FloatAttr
+
+# CHECK: cast<mlir::IntegerAttr>
+p IntegerAttr
+
+# CHECK: cast<mlir::TypeAttr>
+# CHECK: mlir::IndexType
+p TypeAttr
+
+# CHECK: cast<mlir::ArrayAttr>
+# CHECK: llvm::ArrayRef of length 1
+# CHECK: mlir::UnitAttr
+p ArrayAttr
+
+# CHECK: cast<mlir::StringAttr>
+# CHECK: value = "foo"
+p StringAttr
+
+# CHECK: cast<mlir::DenseIntOrFPElementsAttr>
+p ElementsAttr
diff --git a/mlir/utils/gdb-scripts/prettyprinters.py b/mlir/utils/gdb-scripts/prettyprinters.py
new file mode 100644
--- /dev/null
+++ b/mlir/utils/gdb-scripts/prettyprinters.py
@@ -0,0 +1,235 @@
+"""GDB pretty printers for MLIR types."""
+
+import gdb.printing
+
+
+class IdentifierPrinter:
+  """Prints an mlir::Identifier instance."""
+
+  def __init__(self, val):
+    self.entry = val['entry']
+
+  def to_string(self):
+    ptr = (self.entry + 1).cast(gdb.lookup_type('char').pointer())
+    return ptr.string(length=self.entry['keyLength'])
+
+  def display_hint(self):
+    return 'string'
+
+
+class StoragePrinter:
+  """Prints bases of a struct and its fields."""
+
+  def __init__(self, val):
+    self.val = val
+
+  def children(self):
+    for field in self.val.type.fields():
+      if field.is_base_class:
+        yield ('<%s>' % field.name, self.val.cast(field.type))
+      else:
+        yield (field.name, self.val[field.name])
+
+
+class TupleTypeStoragePrinter(StoragePrinter):
+
+  def children(self):
+    for child in StoragePrinter.children(self):
+      yield child
+    pointer_type = gdb.lookup_type('mlir::Type').pointer()
+    elements = (self.val.address + 1).cast(pointer_type)
+    for i in range(self.val['numElements']):
+      yield 'elements[%u]' % i, elements[i]
+
+
+class RankedTypeStoragePrinter(StoragePrinter):
+
+  def children(self):
+    for child in StoragePrinter.children(self):
+      yield child
+    for i in range(self.val['shapeSize']):
+      yield 'shapeElements[%u]' % i, self.val['shapeElements'][i]
+
+
+class MemRefTypeStoragePrinter(RankedTypeStoragePrinter):
+
+  def children(self):
+    for child in RankedTypeStoragePrinter.children(self):
+      yield child
+    for i in range(self.val['numAffineMaps']):
+      yield 'affineMapsList[%u]' % i, self.val['affineMapsList'][i]
+
+
+class FusedLocationStoragePrinter(StoragePrinter):
+
+  def children(self):
+    for child in StoragePrinter.children(self):
+      yield child
+    pointer_type = gdb.lookup_type('mlir::Location').pointer()
+    elements = (self.val.address + 1).cast(pointer_type)
+    for i in range(self.val['numLocs']):
+      yield 'locs[%u]' % i, elements[i]
+
+
+class StorageUserBasePrinter:
+  """Printer for an mlir::detail::StorageUserBase instance."""
+
+  def __init__(self, val):
+    self.val = val
+
+  def children(self):
+    storage_type = self.val.type.template_argument(2)
+    yield 'impl', self.val['impl'].dereference().cast(storage_type)
+
+
+class StorageTypeMap:
+  """Maps a TypeID to the corresponding type derived from StorageUserBase.
+
+  Types need to be registered by name before the first lookup.
+  """
+
+  def __init__(self):
+    self.map = None
+    self.type_names = []
+
+  def register_type(self, type_name):
+    assert not self.map, 'register_type called after __getitem__'
+    self.type_names += [type_name]
+
+  def _init_map(self):
+    """Lazy initialization  of self.map."""
+    if self.map:
+      return
+    self.map = {}
+    for type_name in self.type_names:
+      concrete_type = gdb.lookup_type(type_name)
+      storage = gdb.parse_and_eval(
+          "&'mlir::TypeID::get<%s>()::instance'" % type_name)
+      if concrete_type and storage:
+        self.map[int(storage)] = concrete_type
+
+  def __getitem__(self, type_id):
+    self._init_map()
+    return self.map.get(int(type_id['storage']))
+
+
+storage_type_map = StorageTypeMap()
+
+
+def get_type_id_printer(val):
+  """Returns a printer of the name of a mlir::TypeID."""
+
+  class StringPrinter:
+
+    def __init__(self, string):
+      self.string = string
+
+    def to_string(self):
+      return self.string
+
+  concrete_type = storage_type_map[val]
+  if not concrete_type:
+    return None
+  return StringPrinter('"%s"' % concrete_type.name)
+
+
+def get_attr_or_type_printer(val, get_type_id):
+  """Returns a printer for mlir::Attribute or mlir::Type."""
+
+  class UpcastPrinter:
+
+    def __init__(self, val, type):
+      self.val = val.cast(type)
+
+    def children(self):
+      yield 'cast<%s>' % self.val.type.name, self.val
+
+  if not val['impl']:
+    return None
+  type_id = get_type_id(val['impl'].dereference())
+  concrete_type = storage_type_map[type_id]
+  if not concrete_type:
+    return None
+  return UpcastPrinter(val, concrete_type)
+
+
+pp = gdb.printing.RegexpCollectionPrettyPrinter('MLIRSupport')
+
+pp.add_printer('mlir::Identifier', '^mlir::Identifier$', IdentifierPrinter)
+
+# Printers for types deriving from AttributeStorage or TypeStorage.
+pp.add_printer('mlir::detail::FusedLocationStorage',
+               '^mlir::detail::FusedLocationStorage',
+               FusedLocationStoragePrinter)
+pp.add_printer('mlir::detail::VectorTypeStorage',
+               '^mlir::detail::VectorTypeStorage', RankedTypeStoragePrinter)
+pp.add_printer('mlir::detail::RankedTensorTypeStorage',
+               '^mlir::detail::RankedTensorTypeStorage',
+               RankedTypeStoragePrinter)
+pp.add_printer('mlir::detail::MemRefTypeStorage',
+               '^mlir::detail::MemRefTypeStorage$', MemRefTypeStoragePrinter)
+pp.add_printer('mlir::detail::TupleTypeStorage',
+               '^mlir::detail::TupleTypeStorage$', TupleTypeStoragePrinter)
+
+# Printers for Attribute::AttrBase or Type::TypeBase typedefs.
+pp.add_printer('mlir::detail::StorageUserBase',
+               '^mlir::detail::StorageUserBase<.*>$', StorageUserBasePrinter)
+
+# Printers of types deriving from Attribute::AttrBase or Type::TypeBase.
+for name in [
+    # mlir/IR/Attributes.h
+    'ArrayAttr',
+    'DictionaryAttr',
+    'FloatAttr',
+    'IntegerAttr',
+    'IntegerSetAttr',
+    'OpaqueAttr',
+    'StringAttr',
+    'SymbolRefAttr',
+    'TypeAttr',
+    'UnitAttr',
+    'DenseStringElementsAttr',
+    'DenseIntOrFPElementsAttr',
+    'OpaqueElementsAttr',
+    'SparseElementsAttr',
+    # mlir/IR/StandardTypes.h
+    'ComplexType',
+    'IndexType',
+    'IntegerType',
+    'Float16Type',
+    'Float32Type',
+    'Float64Type',
+    'NoneType',
+    'VectorType',
+    'RankedTensorType',
+    'UnrankedTensorType',
+    'MemRefType',
+    'UnrankedMemRefType',
+    'TupleType',
+    # mlir/IR/Location.h
+    'CallSiteLoc',
+    'FileLineColLoc',
+    'FusedLoc',
+    'NameLoc',
+    'OpaqueLoc',
+    'UnknownLoc'
+]:
+  storage_type_map.register_type('mlir::%s' % name)  # Register for upcasting.
+
+pp.add_printer('mlir::TypeID', '^mlir::TypeID$', get_type_id_printer)
+
+
+def add_attr_or_type_printers(name):
+  """Adds printers for mlir::Attribute or mlir::Type and their Storage type."""
+  get_type_id = lambda val: val['abstract%s' % name]['typeID']
+  pp.add_printer('mlir::%s' % name, '^mlir::%s$' % name,
+                 lambda val: get_attr_or_type_printer(val, get_type_id))
+  pp.add_printer('mlir::%sStorage' % name, '^mlir::%sStorage$' % name,
+                 lambda val: get_type_id_printer(get_type_id(val)))
+
+
+# Upcasting printers of mlir::Attribute and mlir::Type.
+for name in ['Attribute', 'Type']:
+  add_attr_or_type_printers(name)
+
+gdb.printing.register_pretty_printer(gdb.current_objfile(), pp)