Use the space freed up by sparc and zaurus to import LLVM.

ok hackroom@

3 files changed, 727 insertions, 0 deletions

diff --git a/gnu/llvm/unittests/CodeGen/CMakeLists.txt b/gnu/llvm/unittests/CodeGen/CMakeLists.txt
new file mode 100644
index 00000000000..65c0ac3f20e
--- /dev/null
+++ b/gnu/llvm/unittests/CodeGen/CMakeLists.txt
@@ -0,0 +1,12 @@
+set(LLVM_LINK_COMPONENTS
+  AsmPrinter
+  Support
+  )
+
+set(CodeGenSources
+  DIEHashTest.cpp
+  )
+
+add_llvm_unittest(CodeGenTests
+  ${CodeGenSources}
+  )
diff --git a/gnu/llvm/unittests/CodeGen/DIEHashTest.cpp b/gnu/llvm/unittests/CodeGen/DIEHashTest.cpp
new file mode 100644
index 00000000000..e3a9e562827
--- /dev/null
+++ b/gnu/llvm/unittests/CodeGen/DIEHashTest.cpp
@@ -0,0 +1,699 @@
+//===- llvm/unittest/DebugInfo/DWARFFormValueTest.cpp ---------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/CodeGen/DIE.h"
+#include "../lib/CodeGen/AsmPrinter/DIEHash.h"
+#include "llvm/ADT/STLExtras.h"
+#include "llvm/CodeGen/DwarfStringPoolEntry.h"
+#include "llvm/Support/Debug.h"
+#include "llvm/Support/Dwarf.h"
+#include "llvm/Support/Format.h"
+#include "gtest/gtest.h"
+
+using namespace llvm;
+
+namespace {
+
+// Test fixture
+class DIEHashTest : public testing::Test {
+public:
+  BumpPtrAllocator Alloc;
+
+private:
+  StringMap<DwarfStringPoolEntry> Pool;
+
+public:
+  DIEString getString(StringRef S) {
+    DwarfStringPoolEntry Entry = {nullptr, 1, 1};
+    return DIEString(
+        DwarfStringPoolEntryRef(*Pool.insert(std::make_pair(S, Entry)).first));
+  }
+};
+
+TEST_F(DIEHashTest, Data1) {
+  DIEHash Hash;
+  DIE &Die = *DIE::get(Alloc, dwarf::DW_TAG_base_type);
+  DIEInteger Size(4);
+  Die.addValue(Alloc, dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, Size);
+  uint64_t MD5Res = Hash.computeTypeSignature(Die);
+  ASSERT_EQ(0x1AFE116E83701108ULL, MD5Res);
+}
+
+// struct {};
+TEST_F(DIEHashTest, TrivialType) {
+  DIE &Unnamed = *DIE::get(Alloc, dwarf::DW_TAG_structure_type);
+  DIEInteger One(1);
+  Unnamed.addValue(Alloc, dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, One);
+
+  // Line and file number are ignored.
+  Unnamed.addValue(Alloc, dwarf::DW_AT_decl_file, dwarf::DW_FORM_data1, One);
+  Unnamed.addValue(Alloc, dwarf::DW_AT_decl_line, dwarf::DW_FORM_data1, One);
+  uint64_t MD5Res = DIEHash().computeTypeSignature(Unnamed);
+
+  // The exact same hash GCC produces for this DIE.
+  ASSERT_EQ(0x715305ce6cfd9ad1ULL, MD5Res);
+}
+
+// struct foo { };
+TEST_F(DIEHashTest, NamedType) {
+  DIE &Foo = *DIE::get(Alloc, dwarf::DW_TAG_structure_type);
+  DIEInteger One(1);
+  DIEString FooStr = getString("foo");
+  Foo.addValue(Alloc, dwarf::DW_AT_name, dwarf::DW_FORM_strp, FooStr);
+  Foo.addValue(Alloc, dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, One);
+
+  uint64_t MD5Res = DIEHash().computeTypeSignature(Foo);
+
+  // The exact same hash GCC produces for this DIE.
+  ASSERT_EQ(0xd566dbd2ca5265ffULL, MD5Res);
+}
+
+// namespace space { struct foo { }; }
+TEST_F(DIEHashTest, NamespacedType) {
+  DIE &CU = *DIE::get(Alloc, dwarf::DW_TAG_compile_unit);
+
+  auto Space = DIE::get(Alloc, dwarf::DW_TAG_namespace);
+  DIEInteger One(1);
+  DIEString SpaceStr = getString("space");
+  Space->addValue(Alloc, dwarf::DW_AT_name, dwarf::DW_FORM_strp, SpaceStr);
+  // DW_AT_declaration is ignored.
+  Space->addValue(Alloc, dwarf::DW_AT_declaration, dwarf::DW_FORM_flag_present,
+                  One);
+  // sibling?
+
+  auto Foo = DIE::get(Alloc, dwarf::DW_TAG_structure_type);
+  DIEString FooStr = getString("foo");
+  Foo->addValue(Alloc, dwarf::DW_AT_name, dwarf::DW_FORM_strp, FooStr);
+  Foo->addValue(Alloc, dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, One);
+
+  DIE &N = *Foo;
+  Space->addChild(std::move(Foo));
+  CU.addChild(std::move(Space));
+
+  uint64_t MD5Res = DIEHash().computeTypeSignature(N);
+
+  // The exact same hash GCC produces for this DIE.
+  ASSERT_EQ(0x7b80381fd17f1e33ULL, MD5Res);
+}
+
+// struct { int member; };
+TEST_F(DIEHashTest, TypeWithMember) {
+  DIE &Unnamed = *DIE::get(Alloc, dwarf::DW_TAG_structure_type);
+  DIEInteger Four(4);
+  Unnamed.addValue(Alloc, dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, Four);
+
+  DIE &Int = *DIE::get(Alloc, dwarf::DW_TAG_base_type);
+  DIEString IntStr = getString("int");
+  Int.addValue(Alloc, dwarf::DW_AT_name, dwarf::DW_FORM_strp, IntStr);
+  Int.addValue(Alloc, dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, Four);
+  DIEInteger Five(5);
+  Int.addValue(Alloc, dwarf::DW_AT_encoding, dwarf::DW_FORM_data1, Five);
+
+  DIEEntry IntRef(Int);
+
+  auto Member = DIE::get(Alloc, dwarf::DW_TAG_member);
+  DIEString MemberStr = getString("member");
+  Member->addValue(Alloc, dwarf::DW_AT_name, dwarf::DW_FORM_strp, MemberStr);
+  DIEInteger Zero(0);
+  Member->addValue(Alloc, dwarf::DW_AT_data_member_location,
+                   dwarf::DW_FORM_data1, Zero);
+  Member->addValue(Alloc, dwarf::DW_AT_type, dwarf::DW_FORM_ref4, IntRef);
+
+  Unnamed.addChild(std::move(Member));
+
+  uint64_t MD5Res = DIEHash().computeTypeSignature(Unnamed);
+
+  ASSERT_EQ(0x5646aa436b7e07c6ULL, MD5Res);
+}
+
+// struct foo { int mem1, mem2; };
+TEST_F(DIEHashTest, ReusedType) {
+  DIE &Unnamed = *DIE::get(Alloc, dwarf::DW_TAG_structure_type);
+  DIEInteger Eight(8);
+  Unnamed.addValue(Alloc, dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, Eight);
+
+  DIEInteger Four(4);
+  DIE &Int = *DIE::get(Alloc, dwarf::DW_TAG_base_type);
+  DIEString IntStr = getString("int");
+  Int.addValue(Alloc, dwarf::DW_AT_name, dwarf::DW_FORM_strp, IntStr);
+  Int.addValue(Alloc, dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, Four);
+  DIEInteger Five(5);
+  Int.addValue(Alloc, dwarf::DW_AT_encoding, dwarf::DW_FORM_data1, Five);
+
+  DIEEntry IntRef(Int);
+
+  auto Mem1 = DIE::get(Alloc, dwarf::DW_TAG_member);
+  DIEString Mem1Str = getString("mem1");
+  Mem1->addValue(Alloc, dwarf::DW_AT_name, dwarf::DW_FORM_strp, Mem1Str);
+  DIEInteger Zero(0);
+  Mem1->addValue(Alloc, dwarf::DW_AT_data_member_location, dwarf::DW_FORM_data1,
+                 Zero);
+  Mem1->addValue(Alloc, dwarf::DW_AT_type, dwarf::DW_FORM_ref4, IntRef);
+
+  Unnamed.addChild(std::move(Mem1));
+
+  auto Mem2 = DIE::get(Alloc, dwarf::DW_TAG_member);
+  DIEString Mem2Str = getString("mem2");
+  Mem2->addValue(Alloc, dwarf::DW_AT_name, dwarf::DW_FORM_strp, Mem2Str);
+  Mem2->addValue(Alloc, dwarf::DW_AT_data_member_location, dwarf::DW_FORM_data1,
+                 Four);
+  Mem2->addValue(Alloc, dwarf::DW_AT_type, dwarf::DW_FORM_ref4, IntRef);
+
+  Unnamed.addChild(std::move(Mem2));
+
+  uint64_t MD5Res = DIEHash().computeTypeSignature(Unnamed);
+
+  ASSERT_EQ(0x3a7dc3ed7b76b2f8ULL, MD5Res);
+}
+
+// struct foo { static foo f; };
+TEST_F(DIEHashTest, RecursiveType) {
+  DIE &Foo = *DIE::get(Alloc, dwarf::DW_TAG_structure_type);
+  DIEInteger One(1);
+  Foo.addValue(Alloc, dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, One);
+  DIEString FooStr = getString("foo");
+  Foo.addValue(Alloc, dwarf::DW_AT_name, dwarf::DW_FORM_strp, FooStr);
+
+  auto Mem = DIE::get(Alloc, dwarf::DW_TAG_member);
+  DIEString MemStr = getString("mem");
+  Mem->addValue(Alloc, dwarf::DW_AT_name, dwarf::DW_FORM_strp, MemStr);
+  DIEEntry FooRef(Foo);
+  Mem->addValue(Alloc, dwarf::DW_AT_type, dwarf::DW_FORM_ref4, FooRef);
+  // DW_AT_external and DW_AT_declaration are ignored anyway, so skip them.
+
+  Foo.addChild(std::move(Mem));
+
+  uint64_t MD5Res = DIEHash().computeTypeSignature(Foo);
+
+  ASSERT_EQ(0x73d8b25aef227b06ULL, MD5Res);
+}
+
+// struct foo { foo *mem; };
+TEST_F(DIEHashTest, Pointer) {
+  DIE &Foo = *DIE::get(Alloc, dwarf::DW_TAG_structure_type);
+  DIEInteger Eight(8);
+  Foo.addValue(Alloc, dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, Eight);
+  DIEString FooStr = getString("foo");
+  Foo.addValue(Alloc, dwarf::DW_AT_name, dwarf::DW_FORM_strp, FooStr);
+
+  auto Mem = DIE::get(Alloc, dwarf::DW_TAG_member);
+  DIEString MemStr = getString("mem");
+  Mem->addValue(Alloc, dwarf::DW_AT_name, dwarf::DW_FORM_strp, MemStr);
+  DIEInteger Zero(0);
+  Mem->addValue(Alloc, dwarf::DW_AT_data_member_location, dwarf::DW_FORM_data1,
+                Zero);
+
+  DIE &FooPtr = *DIE::get(Alloc, dwarf::DW_TAG_pointer_type);
+  FooPtr.addValue(Alloc, dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, Eight);
+  DIEEntry FooRef(Foo);
+  FooPtr.addValue(Alloc, dwarf::DW_AT_type, dwarf::DW_FORM_ref4, FooRef);
+
+  DIEEntry FooPtrRef(FooPtr);
+  Mem->addValue(Alloc, dwarf::DW_AT_type, dwarf::DW_FORM_ref4, FooPtrRef);
+
+  Foo.addChild(std::move(Mem));
+
+  uint64_t MD5Res = DIEHash().computeTypeSignature(Foo);
+
+  ASSERT_EQ(0x74ea73862e8708d2ULL, MD5Res);
+}
+
+// struct foo { foo &mem; };
+TEST_F(DIEHashTest, Reference) {
+  DIE &Foo = *DIE::get(Alloc, dwarf::DW_TAG_structure_type);
+  DIEInteger Eight(8);
+  Foo.addValue(Alloc, dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, Eight);
+  DIEString FooStr = getString("foo");
+  Foo.addValue(Alloc, dwarf::DW_AT_name, dwarf::DW_FORM_strp, FooStr);
+
+  auto Mem = DIE::get(Alloc, dwarf::DW_TAG_member);
+  DIEString MemStr = getString("mem");
+  Mem->addValue(Alloc, dwarf::DW_AT_name, dwarf::DW_FORM_strp, MemStr);
+  DIEInteger Zero(0);
+  Mem->addValue(Alloc, dwarf::DW_AT_data_member_location, dwarf::DW_FORM_data1,
+                Zero);
+
+  DIE &FooRef = *DIE::get(Alloc, dwarf::DW_TAG_reference_type);
+  FooRef.addValue(Alloc, dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, Eight);
+  DIEEntry FooEntry(Foo);
+  FooRef.addValue(Alloc, dwarf::DW_AT_type, dwarf::DW_FORM_ref4, FooEntry);
+
+  DIE &FooRefConst = *DIE::get(Alloc, dwarf::DW_TAG_const_type);
+  DIEEntry FooRefRef(FooRef);
+  FooRefConst.addValue(Alloc, dwarf::DW_AT_type, dwarf::DW_FORM_ref4,
+                       FooRefRef);
+
+  DIEEntry FooRefConstRef(FooRefConst);
+  Mem->addValue(Alloc, dwarf::DW_AT_type, dwarf::DW_FORM_ref4, FooRefConstRef);
+
+  Foo.addChild(std::move(Mem));
+
+  uint64_t MD5Res = DIEHash().computeTypeSignature(Foo);
+
+  ASSERT_EQ(0xa0b15f467ad4525bULL, MD5Res);
+}
+
+// struct foo { foo &&mem; };
+TEST_F(DIEHashTest, RValueReference) {
+  DIE &Foo = *DIE::get(Alloc, dwarf::DW_TAG_structure_type);
+  DIEInteger Eight(8);
+  Foo.addValue(Alloc, dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, Eight);
+  DIEString FooStr = getString("foo");
+  Foo.addValue(Alloc, dwarf::DW_AT_name, dwarf::DW_FORM_strp, FooStr);
+
+  auto Mem = DIE::get(Alloc, dwarf::DW_TAG_member);
+  DIEString MemStr = getString("mem");
+  Mem->addValue(Alloc, dwarf::DW_AT_name, dwarf::DW_FORM_strp, MemStr);
+  DIEInteger Zero(0);
+  Mem->addValue(Alloc, dwarf::DW_AT_data_member_location, dwarf::DW_FORM_data1,
+                Zero);
+
+  DIE &FooRef = *DIE::get(Alloc, dwarf::DW_TAG_rvalue_reference_type);
+  FooRef.addValue(Alloc, dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, Eight);
+  DIEEntry FooEntry(Foo);
+  FooRef.addValue(Alloc, dwarf::DW_AT_type, dwarf::DW_FORM_ref4, FooEntry);
+
+  DIE &FooRefConst = *DIE::get(Alloc, dwarf::DW_TAG_const_type);
+  DIEEntry FooRefRef(FooRef);
+  FooRefConst.addValue(Alloc, dwarf::DW_AT_type, dwarf::DW_FORM_ref4,
+                       FooRefRef);
+
+  DIEEntry FooRefConstRef(FooRefConst);
+  Mem->addValue(Alloc, dwarf::DW_AT_type, dwarf::DW_FORM_ref4, FooRefConstRef);
+
+  Foo.addChild(std::move(Mem));
+
+  uint64_t MD5Res = DIEHash().computeTypeSignature(Foo);
+
+  ASSERT_EQ(0xad211c8c3b31e57ULL, MD5Res);
+}
+
+// struct foo { foo foo::*mem; };
+TEST_F(DIEHashTest, PtrToMember) {
+  DIE &Foo = *DIE::get(Alloc, dwarf::DW_TAG_structure_type);
+  DIEInteger Eight(8);
+  Foo.addValue(Alloc, dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, Eight);
+  DIEString FooStr = getString("foo");
+  Foo.addValue(Alloc, dwarf::DW_AT_name, dwarf::DW_FORM_strp, FooStr);
+
+  auto Mem = DIE::get(Alloc, dwarf::DW_TAG_member);
+  DIEString MemStr = getString("mem");
+  Mem->addValue(Alloc, dwarf::DW_AT_name, dwarf::DW_FORM_strp, MemStr);
+  DIEInteger Zero(0);
+  Mem->addValue(Alloc, dwarf::DW_AT_data_member_location, dwarf::DW_FORM_data1,
+                Zero);
+
+  DIE &PtrToFooMem = *DIE::get(Alloc, dwarf::DW_TAG_ptr_to_member_type);
+  DIEEntry FooEntry(Foo);
+  PtrToFooMem.addValue(Alloc, dwarf::DW_AT_type, dwarf::DW_FORM_ref4, FooEntry);
+  PtrToFooMem.addValue(Alloc, dwarf::DW_AT_containing_type, dwarf::DW_FORM_ref4,
+                       FooEntry);
+
+  DIEEntry PtrToFooMemRef(PtrToFooMem);
+  Mem->addValue(Alloc, dwarf::DW_AT_type, dwarf::DW_FORM_ref4, PtrToFooMemRef);
+
+  Foo.addChild(std::move(Mem));
+
+  uint64_t MD5Res = DIEHash().computeTypeSignature(Foo);
+
+  ASSERT_EQ(0x852e0c9ff7c04ebULL, MD5Res);
+}
+
+// Check that the hash for a pointer-to-member matches regardless of whether the
+// pointed-to type is a declaration or a definition.
+//
+//   struct bar; // { };
+//   struct foo { bar foo::*mem; };
+TEST_F(DIEHashTest, PtrToMemberDeclDefMatch) {
+  DIEInteger Zero(0);
+  DIEInteger One(1);
+  DIEInteger Eight(8);
+  DIEString FooStr = getString("foo");
+  DIEString BarStr = getString("bar");
+  DIEString MemStr = getString("mem");
+  uint64_t MD5ResDecl;
+  {
+    DIE &Bar = *DIE::get(Alloc, dwarf::DW_TAG_structure_type);
+    Bar.addValue(Alloc, dwarf::DW_AT_name, dwarf::DW_FORM_strp, BarStr);
+    Bar.addValue(Alloc, dwarf::DW_AT_declaration, dwarf::DW_FORM_flag_present,
+                 One);
+
+    DIE &Foo = *DIE::get(Alloc, dwarf::DW_TAG_structure_type);
+    Foo.addValue(Alloc, dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, Eight);
+    Foo.addValue(Alloc, dwarf::DW_AT_name, dwarf::DW_FORM_strp, FooStr);
+
+    auto Mem = DIE::get(Alloc, dwarf::DW_TAG_member);
+    Mem->addValue(Alloc, dwarf::DW_AT_name, dwarf::DW_FORM_strp, MemStr);
+    Mem->addValue(Alloc, dwarf::DW_AT_data_member_location,
+                  dwarf::DW_FORM_data1, Zero);
+
+    DIE &PtrToFooMem = *DIE::get(Alloc, dwarf::DW_TAG_ptr_to_member_type);
+    DIEEntry BarEntry(Bar);
+    PtrToFooMem.addValue(Alloc, dwarf::DW_AT_type, dwarf::DW_FORM_ref4,
+                         BarEntry);
+    DIEEntry FooEntry(Foo);
+    PtrToFooMem.addValue(Alloc, dwarf::DW_AT_containing_type,
+                         dwarf::DW_FORM_ref4, FooEntry);
+
+    DIEEntry PtrToFooMemRef(PtrToFooMem);
+    Mem->addValue(Alloc, dwarf::DW_AT_type, dwarf::DW_FORM_ref4,
+                  PtrToFooMemRef);
+
+    Foo.addChild(std::move(Mem));
+
+    MD5ResDecl = DIEHash().computeTypeSignature(Foo);
+  }
+  uint64_t MD5ResDef;
+  {
+    DIE &Bar = *DIE::get(Alloc, dwarf::DW_TAG_structure_type);
+    Bar.addValue(Alloc, dwarf::DW_AT_name, dwarf::DW_FORM_strp, BarStr);
+    Bar.addValue(Alloc, dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, One);
+
+    DIE &Foo = *DIE::get(Alloc, dwarf::DW_TAG_structure_type);
+    Foo.addValue(Alloc, dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, Eight);
+    Foo.addValue(Alloc, dwarf::DW_AT_name, dwarf::DW_FORM_strp, FooStr);
+
+    auto Mem = DIE::get(Alloc, dwarf::DW_TAG_member);
+    Mem->addValue(Alloc, dwarf::DW_AT_name, dwarf::DW_FORM_strp, MemStr);
+    Mem->addValue(Alloc, dwarf::DW_AT_data_member_location,
+                  dwarf::DW_FORM_data1, Zero);
+
+    DIE &PtrToFooMem = *DIE::get(Alloc, dwarf::DW_TAG_ptr_to_member_type);
+    DIEEntry BarEntry(Bar);
+    PtrToFooMem.addValue(Alloc, dwarf::DW_AT_type, dwarf::DW_FORM_ref4,
+                         BarEntry);
+    DIEEntry FooEntry(Foo);
+    PtrToFooMem.addValue(Alloc, dwarf::DW_AT_containing_type,
+                         dwarf::DW_FORM_ref4, FooEntry);
+
+    DIEEntry PtrToFooMemRef(PtrToFooMem);
+    Mem->addValue(Alloc, dwarf::DW_AT_type, dwarf::DW_FORM_ref4,
+                  PtrToFooMemRef);
+
+    Foo.addChild(std::move(Mem));
+
+    MD5ResDef = DIEHash().computeTypeSignature(Foo);
+  }
+  ASSERT_EQ(MD5ResDef, MD5ResDecl);
+}
+
+// Check that the hash for a pointer-to-member matches regardless of whether the
+// pointed-to type is a declaration or a definition.
+//
+//   struct bar; // { };
+//   struct foo { bar bar::*mem; };
+TEST_F(DIEHashTest, PtrToMemberDeclDefMisMatch) {
+  DIEInteger Zero(0);
+  DIEInteger One(1);
+  DIEInteger Eight(8);
+  DIEString FooStr = getString("foo");
+  DIEString BarStr = getString("bar");
+  DIEString MemStr = getString("mem");
+  uint64_t MD5ResDecl;
+  {
+    DIE &Bar = *DIE::get(Alloc, dwarf::DW_TAG_structure_type);
+    Bar.addValue(Alloc, dwarf::DW_AT_name, dwarf::DW_FORM_strp, BarStr);
+    Bar.addValue(Alloc, dwarf::DW_AT_declaration, dwarf::DW_FORM_flag_present,
+                 One);
+
+    DIE &Foo = *DIE::get(Alloc, dwarf::DW_TAG_structure_type);
+    Foo.addValue(Alloc, dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, Eight);
+    Foo.addValue(Alloc, dwarf::DW_AT_name, dwarf::DW_FORM_strp, FooStr);
+
+    auto Mem = DIE::get(Alloc, dwarf::DW_TAG_member);
+    Mem->addValue(Alloc, dwarf::DW_AT_name, dwarf::DW_FORM_strp, MemStr);
+    Mem->addValue(Alloc, dwarf::DW_AT_data_member_location,
+                  dwarf::DW_FORM_data1, Zero);
+
+    DIE &PtrToFooMem = *DIE::get(Alloc, dwarf::DW_TAG_ptr_to_member_type);
+    DIEEntry BarEntry(Bar);
+    PtrToFooMem.addValue(Alloc, dwarf::DW_AT_type, dwarf::DW_FORM_ref4,
+                         BarEntry);
+    PtrToFooMem.addValue(Alloc, dwarf::DW_AT_containing_type,
+                         dwarf::DW_FORM_ref4, BarEntry);
+
+    DIEEntry PtrToFooMemRef(PtrToFooMem);
+    Mem->addValue(Alloc, dwarf::DW_AT_type, dwarf::DW_FORM_ref4,
+                  PtrToFooMemRef);
+
+    Foo.addChild(std::move(Mem));
+
+    MD5ResDecl = DIEHash().computeTypeSignature(Foo);
+  }
+  uint64_t MD5ResDef;
+  {
+    DIE &Bar = *DIE::get(Alloc, dwarf::DW_TAG_structure_type);
+    Bar.addValue(Alloc, dwarf::DW_AT_name, dwarf::DW_FORM_strp, BarStr);
+    Bar.addValue(Alloc, dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, One);
+
+    DIE &Foo = *DIE::get(Alloc, dwarf::DW_TAG_structure_type);
+    Foo.addValue(Alloc, dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, Eight);
+    Foo.addValue(Alloc, dwarf::DW_AT_name, dwarf::DW_FORM_strp, FooStr);
+
+    auto Mem = DIE::get(Alloc, dwarf::DW_TAG_member);
+    Mem->addValue(Alloc, dwarf::DW_AT_name, dwarf::DW_FORM_strp, MemStr);
+    Mem->addValue(Alloc, dwarf::DW_AT_data_member_location,
+                  dwarf::DW_FORM_data1, Zero);
+
+    DIE &PtrToFooMem = *DIE::get(Alloc, dwarf::DW_TAG_ptr_to_member_type);
+    DIEEntry BarEntry(Bar);
+    PtrToFooMem.addValue(Alloc, dwarf::DW_AT_type, dwarf::DW_FORM_ref4,
+                         BarEntry);
+    PtrToFooMem.addValue(Alloc, dwarf::DW_AT_containing_type,
+                         dwarf::DW_FORM_ref4, BarEntry);
+
+    DIEEntry PtrToFooMemRef(PtrToFooMem);
+    Mem->addValue(Alloc, dwarf::DW_AT_type, dwarf::DW_FORM_ref4,
+                  PtrToFooMemRef);
+
+    Foo.addChild(std::move(Mem));
+
+    MD5ResDef = DIEHash().computeTypeSignature(Foo);
+  }
+  // FIXME: This seems to be a bug in the DWARF type hashing specification that
+  // only uses the brief name hashing for types referenced via DW_AT_type. In
+  // this case the type is referenced via DW_AT_containing_type and full hashing
+  // causes a hash to differ when the containing type is a declaration in one TU
+  // and a definition in another.
+  ASSERT_NE(MD5ResDef, MD5ResDecl);
+}
+
+// struct { } a;
+// struct foo { decltype(a) mem; };
+TEST_F(DIEHashTest, RefUnnamedType) {
+  DIEInteger Zero(0);
+  DIEInteger One(1);
+  DIEInteger Eight(8);
+  DIEString FooStr = getString("foo");
+  DIEString MemStr = getString("mem");
+
+  DIE &Unnamed = *DIE::get(Alloc, dwarf::DW_TAG_structure_type);
+  Unnamed.addValue(Alloc, dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, One);
+
+  DIE &Foo = *DIE::get(Alloc, dwarf::DW_TAG_structure_type);
+  Foo.addValue(Alloc, dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, Eight);
+  Foo.addValue(Alloc, dwarf::DW_AT_name, dwarf::DW_FORM_strp, FooStr);
+
+  auto Mem = DIE::get(Alloc, dwarf::DW_TAG_member);
+  Mem->addValue(Alloc, dwarf::DW_AT_name, dwarf::DW_FORM_strp, MemStr);
+  Mem->addValue(Alloc, dwarf::DW_AT_data_member_location, dwarf::DW_FORM_data1,
+                Zero);
+
+  DIE &UnnamedPtr = *DIE::get(Alloc, dwarf::DW_TAG_pointer_type);
+  UnnamedPtr.addValue(Alloc, dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1,
+                      Eight);
+  DIEEntry UnnamedRef(Unnamed);
+  UnnamedPtr.addValue(Alloc, dwarf::DW_AT_type, dwarf::DW_FORM_ref4,
+                      UnnamedRef);
+
+  DIEEntry UnnamedPtrRef(UnnamedPtr);
+  Mem->addValue(Alloc, dwarf::DW_AT_type, dwarf::DW_FORM_ref4, UnnamedPtrRef);
+
+  Foo.addChild(std::move(Mem));
+
+  uint64_t MD5Res = DIEHash().computeTypeSignature(Foo);
+
+  ASSERT_EQ(0x954e026f01c02529ULL, MD5Res);
+}
+
+// struct { struct foo { }; };
+TEST_F(DIEHashTest, NestedType) {
+  DIE &Unnamed = *DIE::get(Alloc, dwarf::DW_TAG_structure_type);
+  DIEInteger One(1);
+  Unnamed.addValue(Alloc, dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, One);
+
+  auto Foo = DIE::get(Alloc, dwarf::DW_TAG_structure_type);
+  DIEString FooStr = getString("foo");
+  Foo->addValue(Alloc, dwarf::DW_AT_name, dwarf::DW_FORM_strp, FooStr);
+  Foo->addValue(Alloc, dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, One);
+
+  Unnamed.addChild(std::move(Foo));
+
+  uint64_t MD5Res = DIEHash().computeTypeSignature(Unnamed);
+
+  // The exact same hash GCC produces for this DIE.
+  ASSERT_EQ(0xde8a3b7b43807f4aULL, MD5Res);
+}
+
+// struct { static void func(); };
+TEST_F(DIEHashTest, MemberFunc) {
+  DIE &Unnamed = *DIE::get(Alloc, dwarf::DW_TAG_structure_type);
+  DIEInteger One(1);
+  Unnamed.addValue(Alloc, dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, One);
+
+  auto Func = DIE::get(Alloc, dwarf::DW_TAG_subprogram);
+  DIEString FuncStr = getString("func");
+  Func->addValue(Alloc, dwarf::DW_AT_name, dwarf::DW_FORM_strp, FuncStr);
+
+  Unnamed.addChild(std::move(Func));
+
+  uint64_t MD5Res = DIEHash().computeTypeSignature(Unnamed);
+
+  // The exact same hash GCC produces for this DIE.
+  ASSERT_EQ(0xd36a1b6dfb604ba0ULL, MD5Res);
+}
+
+// struct A {
+//   static void func();
+// };
+TEST_F(DIEHashTest, MemberFuncFlag) {
+  DIE &A = *DIE::get(Alloc, dwarf::DW_TAG_structure_type);
+  DIEInteger One(1);
+  DIEString AStr = getString("A");
+  A.addValue(Alloc, dwarf::DW_AT_name, dwarf::DW_FORM_strp, AStr);
+  A.addValue(Alloc, dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, One);
+  A.addValue(Alloc, dwarf::DW_AT_decl_file, dwarf::DW_FORM_data1, One);
+  A.addValue(Alloc, dwarf::DW_AT_decl_line, dwarf::DW_FORM_data1, One);
+
+  auto Func = DIE::get(Alloc, dwarf::DW_TAG_subprogram);
+  DIEString FuncStr = getString("func");
+  DIEString FuncLinkage = getString("_ZN1A4funcEv");
+  DIEInteger Two(2);
+  Func->addValue(Alloc, dwarf::DW_AT_external, dwarf::DW_FORM_flag_present,
+                 One);
+  Func->addValue(Alloc, dwarf::DW_AT_name, dwarf::DW_FORM_strp, FuncStr);
+  Func->addValue(Alloc, dwarf::DW_AT_decl_file, dwarf::DW_FORM_data1, One);
+  Func->addValue(Alloc, dwarf::DW_AT_decl_line, dwarf::DW_FORM_data1, Two);
+  Func->addValue(Alloc, dwarf::DW_AT_linkage_name, dwarf::DW_FORM_strp,
+                 FuncLinkage);
+  Func->addValue(Alloc, dwarf::DW_AT_declaration, dwarf::DW_FORM_flag_present,
+                 One);
+
+  A.addChild(std::move(Func));
+
+  uint64_t MD5Res = DIEHash().computeTypeSignature(A);
+
+  // The exact same hash GCC produces for this DIE.
+  ASSERT_EQ(0x8f78211ddce3df10ULL, MD5Res);
+}
+
+// Derived from:
+// struct A {
+//   const static int PI = -3;
+// };
+// A a;
+TEST_F(DIEHashTest, MemberSdata) {
+  DIE &A = *DIE::get(Alloc, dwarf::DW_TAG_structure_type);
+  DIEInteger One(1);
+  DIEString AStr = getString("A");
+  A.addValue(Alloc, dwarf::DW_AT_name, dwarf::DW_FORM_strp, AStr);
+  A.addValue(Alloc, dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, One);
+  A.addValue(Alloc, dwarf::DW_AT_decl_file, dwarf::DW_FORM_data1, One);
+  A.addValue(Alloc, dwarf::DW_AT_decl_line, dwarf::DW_FORM_data1, One);
+
+  DIEInteger Four(4);
+  DIEInteger Five(5);
+  DIEString FStr = getString("int");
+  DIE &IntTyDIE = *DIE::get(Alloc, dwarf::DW_TAG_base_type);
+  IntTyDIE.addValue(Alloc, dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, Four);
+  IntTyDIE.addValue(Alloc, dwarf::DW_AT_encoding, dwarf::DW_FORM_data1, Five);
+  IntTyDIE.addValue(Alloc, dwarf::DW_AT_name, dwarf::DW_FORM_strp, FStr);
+
+  DIEEntry IntTy(IntTyDIE);
+  auto PITyDIE = DIE::get(Alloc, dwarf::DW_TAG_const_type);
+  PITyDIE->addValue(Alloc, dwarf::DW_AT_type, dwarf::DW_FORM_ref4, IntTy);
+
+  DIEEntry PITy(*PITyDIE);
+  auto PI = DIE::get(Alloc, dwarf::DW_TAG_member);
+  DIEString PIStr = getString("PI");
+  DIEInteger Two(2);
+  DIEInteger NegThree(-3);
+  PI->addValue(Alloc, dwarf::DW_AT_name, dwarf::DW_FORM_strp, PIStr);
+  PI->addValue(Alloc, dwarf::DW_AT_decl_file, dwarf::DW_FORM_data1, One);
+  PI->addValue(Alloc, dwarf::DW_AT_decl_line, dwarf::DW_FORM_data1, Two);
+  PI->addValue(Alloc, dwarf::DW_AT_type, dwarf::DW_FORM_ref4, PITy);
+  PI->addValue(Alloc, dwarf::DW_AT_external, dwarf::DW_FORM_flag_present, One);
+  PI->addValue(Alloc, dwarf::DW_AT_declaration, dwarf::DW_FORM_flag_present,
+               One);
+  PI->addValue(Alloc, dwarf::DW_AT_const_value, dwarf::DW_FORM_sdata, NegThree);
+
+  A.addChild(std::move(PI));
+
+  uint64_t MD5Res = DIEHash().computeTypeSignature(A);
+  ASSERT_EQ(0x9a216000dd3788a7ULL, MD5Res);
+}
+
+// Derived from:
+// struct A {
+//   const static float PI = 3.14;
+// };
+// A a;
+TEST_F(DIEHashTest, MemberBlock) {
+  DIE &A = *DIE::get(Alloc, dwarf::DW_TAG_structure_type);
+  DIEInteger One(1);
+  DIEString AStr = getString("A");
+  A.addValue(Alloc, dwarf::DW_AT_name, dwarf::DW_FORM_strp, AStr);
+  A.addValue(Alloc, dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, One);
+  A.addValue(Alloc, dwarf::DW_AT_decl_file, dwarf::DW_FORM_data1, One);
+  A.addValue(Alloc, dwarf::DW_AT_decl_line, dwarf::DW_FORM_data1, One);
+
+  DIEInteger Four(4);
+  DIEString FStr = getString("float");
+  auto FloatTyDIE = DIE::get(Alloc, dwarf::DW_TAG_base_type);
+  FloatTyDIE->addValue(Alloc, dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1,
+                       Four);
+  FloatTyDIE->addValue(Alloc, dwarf::DW_AT_encoding, dwarf::DW_FORM_data1,
+                       Four);
+  FloatTyDIE->addValue(Alloc, dwarf::DW_AT_name, dwarf::DW_FORM_strp, FStr);
+  DIEEntry FloatTy(*FloatTyDIE);
+  auto PITyDIE = DIE::get(Alloc, dwarf::DW_TAG_const_type);
+  PITyDIE->addValue(Alloc, dwarf::DW_AT_type, dwarf::DW_FORM_ref4, FloatTy);
+
+  DIEEntry PITy(*PITyDIE);
+  auto PI = DIE::get(Alloc, dwarf::DW_TAG_member);
+  DIEString PIStr = getString("PI");
+  DIEInteger Two(2);
+  PI->addValue(Alloc, dwarf::DW_AT_name, dwarf::DW_FORM_strp, PIStr);
+  PI->addValue(Alloc, dwarf::DW_AT_decl_file, dwarf::DW_FORM_data1, One);
+  PI->addValue(Alloc, dwarf::DW_AT_decl_line, dwarf::DW_FORM_data1, Two);
+  PI->addValue(Alloc, dwarf::DW_AT_type, dwarf::DW_FORM_ref4, PITy);
+  PI->addValue(Alloc, dwarf::DW_AT_external, dwarf::DW_FORM_flag_present, One);
+  PI->addValue(Alloc, dwarf::DW_AT_declaration, dwarf::DW_FORM_flag_present,
+               One);
+
+  DIEBlock PIBlock;
+  DIEInteger Blk1(0xc3);
+  DIEInteger Blk2(0xf5);
+  DIEInteger Blk3(0x48);
+  DIEInteger Blk4(0x40);
+
+  PIBlock.addValue(Alloc, (dwarf::Attribute)0, dwarf::DW_FORM_data1, Blk1);
+  PIBlock.addValue(Alloc, (dwarf::Attribute)0, dwarf::DW_FORM_data1, Blk2);
+  PIBlock.addValue(Alloc, (dwarf::Attribute)0, dwarf::DW_FORM_data1, Blk3);
+  PIBlock.addValue(Alloc, (dwarf::Attribute)0, dwarf::DW_FORM_data1, Blk4);
+
+  PI->addValue(Alloc, dwarf::DW_AT_const_value, dwarf::DW_FORM_block1,
+               &PIBlock);
+
+  A.addChild(std::move(PI));
+
+  uint64_t MD5Res = DIEHash().computeTypeSignature(A);
+  ASSERT_EQ(0x493af53ad3d3f651ULL, MD5Res);
+}
+}
diff --git a/gnu/llvm/unittests/CodeGen/Makefile b/gnu/llvm/unittests/CodeGen/Makefile
new file mode 100644
index 00000000000..4f07017c291
--- /dev/null
+++ b/gnu/llvm/unittests/CodeGen/Makefile
@@ -0,0 +1,16 @@
+##===- unittests/DebugInfo/Makefile ------------------------*- Makefile -*-===##
+#
+#                     The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+#
+##===----------------------------------------------------------------------===##
+
+LEVEL = ../..
+TESTNAME = CodeGen
+LINK_COMPONENTS := asmprinter codegen support
+
+include $(LEVEL)/Makefile.config
+
+include $(LLVM_SRC_ROOT)/unittests/Makefile.unittest