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llvm/unittests/CodeGen/DIEHashTest.cpp
David Blaikie 7c0c2e56b0 DIEHash: Summary hashing of member functions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193432 91177308-0d34-0410-b5e6-96231b3b80d8
2013-10-25 20:04:25 +00:00

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//===- 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 "../lib/CodeGen/AsmPrinter/DIE.h"
#include "../lib/CodeGen/AsmPrinter/DIEHash.h"
#include "llvm/Support/Dwarf.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/Format.h"
#include "gtest/gtest.h"
using namespace llvm;
namespace {
TEST(DIEHashTest, Data1) {
DIEHash Hash;
DIE Die(dwarf::DW_TAG_base_type);
DIEInteger Size(4);
Die.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Size);
uint64_t MD5Res = Hash.computeTypeSignature(Die);
ASSERT_EQ(0x1AFE116E83701108ULL, MD5Res);
}
// struct {};
TEST(DIEHashTest, TrivialType) {
DIE Unnamed(dwarf::DW_TAG_structure_type);
DIEInteger One(1);
Unnamed.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &One);
// Line and file number are ignored.
Unnamed.addValue(dwarf::DW_AT_decl_file, dwarf::DW_FORM_data1, &One);
Unnamed.addValue(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(DIEHashTest, NamedType) {
DIE Foo(dwarf::DW_TAG_structure_type);
DIEInteger One(1);
DIEString FooStr(&One, "foo");
Foo.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &FooStr);
Foo.addValue(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(DIEHashTest, NamespacedType) {
DIE CU(dwarf::DW_TAG_compile_unit);
DIE *Space = new DIE(dwarf::DW_TAG_namespace);
DIEInteger One(1);
DIEString SpaceStr(&One, "space");
Space->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &SpaceStr);
// DW_AT_declaration is ignored.
Space->addValue(dwarf::DW_AT_declaration, dwarf::DW_FORM_flag_present, &One);
// sibling?
DIE *Foo = new DIE(dwarf::DW_TAG_structure_type);
DIEString FooStr(&One, "foo");
Foo->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &FooStr);
Foo->addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &One);
Space->addChild(Foo);
CU.addChild(Space);
uint64_t MD5Res = DIEHash().computeTypeSignature(*Foo);
// The exact same hash GCC produces for this DIE.
ASSERT_EQ(0x7b80381fd17f1e33ULL, MD5Res);
}
// struct { int member; };
TEST(DIEHashTest, TypeWithMember) {
DIE Unnamed(dwarf::DW_TAG_structure_type);
DIEInteger Four(4);
Unnamed.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Four);
DIE *Member = new DIE(dwarf::DW_TAG_member);
DIEString MemberStr(&Four, "member");
Member->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &MemberStr);
DIEInteger Zero(0);
Member->addValue(dwarf::DW_AT_data_member_location, dwarf::DW_FORM_data1, &Zero);
Unnamed.addChild(Member);
DIE Int(dwarf::DW_TAG_base_type);
DIEString IntStr(&Four, "int");
Int.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &IntStr);
Int.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Four);
DIEInteger Five(5);
Int.addValue(dwarf::DW_AT_encoding, dwarf::DW_FORM_data1, &Five);
DIEEntry IntRef(&Int);
Member->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &IntRef);
uint64_t MD5Res = DIEHash().computeTypeSignature(Unnamed);
ASSERT_EQ(0x5646aa436b7e07c6ULL, MD5Res);
}
// struct foo { int mem1, mem2; };
TEST(DIEHashTest, ReusedType) {
DIE Unnamed(dwarf::DW_TAG_structure_type);
DIEInteger Eight(8);
Unnamed.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Eight);
DIE *Mem1 = new DIE(dwarf::DW_TAG_member);
DIEInteger Four(4);
DIEString Mem1Str(&Four, "mem1");
Mem1->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &Mem1Str);
DIEInteger Zero(0);
Mem1->addValue(dwarf::DW_AT_data_member_location, dwarf::DW_FORM_data1, &Zero);
Unnamed.addChild(Mem1);
DIE *Mem2 = new DIE(dwarf::DW_TAG_member);
DIEString Mem2Str(&Four, "mem2");
Mem2->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &Mem2Str);
Mem2->addValue(dwarf::DW_AT_data_member_location, dwarf::DW_FORM_data1, &Four);
Unnamed.addChild(Mem2);
DIE Int(dwarf::DW_TAG_base_type);
DIEString IntStr(&Four, "int");
Int.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &IntStr);
Int.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Four);
DIEInteger Five(5);
Int.addValue(dwarf::DW_AT_encoding, dwarf::DW_FORM_data1, &Five);
DIEEntry IntRef(&Int);
Mem1->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &IntRef);
Mem2->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &IntRef);
uint64_t MD5Res = DIEHash().computeTypeSignature(Unnamed);
ASSERT_EQ(0x3a7dc3ed7b76b2f8ULL, MD5Res);
}
// struct foo { static foo f; };
TEST(DIEHashTest, RecursiveType) {
DIE Foo(dwarf::DW_TAG_structure_type);
DIEInteger One(1);
Foo.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &One);
DIEString FooStr(&One, "foo");
Foo.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &FooStr);
DIE *Mem = new DIE(dwarf::DW_TAG_member);
DIEString MemStr(&One, "mem");
Mem->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &MemStr);
DIEEntry FooRef(&Foo);
Mem->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &FooRef);
// DW_AT_external and DW_AT_declaration are ignored anyway, so skip them.
Foo.addChild(Mem);
uint64_t MD5Res = DIEHash().computeTypeSignature(Foo);
ASSERT_EQ(0x73d8b25aef227b06ULL, MD5Res);
}
// struct foo { foo *mem; };
TEST(DIEHashTest, Pointer) {
DIE Foo(dwarf::DW_TAG_structure_type);
DIEInteger Eight(8);
Foo.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Eight);
DIEString FooStr(&Eight, "foo");
Foo.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &FooStr);
DIE *Mem = new DIE(dwarf::DW_TAG_member);
DIEString MemStr(&Eight, "mem");
Mem->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &MemStr);
DIEInteger Zero(0);
Mem->addValue(dwarf::DW_AT_data_member_location, dwarf::DW_FORM_data1, &Zero);
DIE FooPtr(dwarf::DW_TAG_pointer_type);
FooPtr.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Eight);
DIEEntry FooRef(&Foo);
FooPtr.addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &FooRef);
DIEEntry FooPtrRef(&FooPtr);
Mem->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &FooPtrRef);
Foo.addChild(Mem);
uint64_t MD5Res = DIEHash().computeTypeSignature(Foo);
ASSERT_EQ(0x74ea73862e8708d2ULL, MD5Res);
}
// struct foo { foo &mem; };
TEST(DIEHashTest, Reference) {
DIE Foo(dwarf::DW_TAG_structure_type);
DIEInteger Eight(8);
Foo.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Eight);
DIEString FooStr(&Eight, "foo");
Foo.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &FooStr);
DIE *Mem = new DIE(dwarf::DW_TAG_member);
DIEString MemStr(&Eight, "mem");
Mem->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &MemStr);
DIEInteger Zero(0);
Mem->addValue(dwarf::DW_AT_data_member_location, dwarf::DW_FORM_data1, &Zero);
DIE FooRef(dwarf::DW_TAG_reference_type);
FooRef.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Eight);
DIEEntry FooEntry(&Foo);
FooRef.addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &FooEntry);
DIE FooRefConst(dwarf::DW_TAG_const_type);
DIEEntry FooRefRef(&FooRef);
FooRefConst.addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &FooRefRef);
DIEEntry FooRefConstRef(&FooRefConst);
Mem->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &FooRefConstRef);
Foo.addChild(Mem);
uint64_t MD5Res = DIEHash().computeTypeSignature(Foo);
ASSERT_EQ(0xa0b15f467ad4525bULL, MD5Res);
}
// struct foo { foo &&mem; };
TEST(DIEHashTest, RValueReference) {
DIE Foo(dwarf::DW_TAG_structure_type);
DIEInteger Eight(8);
Foo.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Eight);
DIEString FooStr(&Eight, "foo");
Foo.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &FooStr);
DIE *Mem = new DIE(dwarf::DW_TAG_member);
DIEString MemStr(&Eight, "mem");
Mem->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &MemStr);
DIEInteger Zero(0);
Mem->addValue(dwarf::DW_AT_data_member_location, dwarf::DW_FORM_data1, &Zero);
DIE FooRef(dwarf::DW_TAG_rvalue_reference_type);
FooRef.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Eight);
DIEEntry FooEntry(&Foo);
FooRef.addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &FooEntry);
DIE FooRefConst(dwarf::DW_TAG_const_type);
DIEEntry FooRefRef(&FooRef);
FooRefConst.addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &FooRefRef);
DIEEntry FooRefConstRef(&FooRefConst);
Mem->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &FooRefConstRef);
Foo.addChild(Mem);
uint64_t MD5Res = DIEHash().computeTypeSignature(Foo);
ASSERT_EQ(0xad211c8c3b31e57ULL, MD5Res);
}
// struct foo { foo foo::*mem; };
TEST(DIEHashTest, PtrToMember) {
DIE Foo(dwarf::DW_TAG_structure_type);
DIEInteger Eight(8);
Foo.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Eight);
DIEString FooStr(&Eight, "foo");
Foo.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &FooStr);
DIE *Mem = new DIE(dwarf::DW_TAG_member);
DIEString MemStr(&Eight, "mem");
Mem->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &MemStr);
DIEInteger Zero(0);
Mem->addValue(dwarf::DW_AT_data_member_location, dwarf::DW_FORM_data1, &Zero);
DIE PtrToFooMem(dwarf::DW_TAG_ptr_to_member_type);
DIEEntry FooEntry(&Foo);
PtrToFooMem.addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &FooEntry);
PtrToFooMem.addValue(dwarf::DW_AT_containing_type, dwarf::DW_FORM_ref4, &FooEntry);
DIEEntry PtrToFooMemRef(&PtrToFooMem);
Mem->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &PtrToFooMemRef);
Foo.addChild(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(DIEHashTest, PtrToMemberDeclDefMatch) {
DIEInteger Zero(0);
DIEInteger One(1);
DIEInteger Eight(8);
DIEString FooStr(&Eight, "foo");
DIEString BarStr(&Eight, "bar");
DIEString MemStr(&Eight, "mem");
uint64_t MD5ResDecl;
{
DIE Bar(dwarf::DW_TAG_structure_type);
Bar.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &BarStr);
Bar.addValue(dwarf::DW_AT_declaration, dwarf::DW_FORM_flag_present, &One);
DIE Foo(dwarf::DW_TAG_structure_type);
Foo.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Eight);
Foo.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &FooStr);
DIE *Mem = new DIE(dwarf::DW_TAG_member);
Mem->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &MemStr);
Mem->addValue(dwarf::DW_AT_data_member_location, dwarf::DW_FORM_data1,
&Zero);
DIE PtrToFooMem(dwarf::DW_TAG_ptr_to_member_type);
DIEEntry BarEntry(&Bar);
PtrToFooMem.addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &BarEntry);
DIEEntry FooEntry(&Foo);
PtrToFooMem.addValue(dwarf::DW_AT_containing_type, dwarf::DW_FORM_ref4,
&FooEntry);
DIEEntry PtrToFooMemRef(&PtrToFooMem);
Mem->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &PtrToFooMemRef);
Foo.addChild(Mem);
MD5ResDecl = DIEHash().computeTypeSignature(Foo);
}
uint64_t MD5ResDef;
{
DIE Bar(dwarf::DW_TAG_structure_type);
Bar.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &BarStr);
Bar.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &One);
DIE Foo(dwarf::DW_TAG_structure_type);
Foo.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Eight);
Foo.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &FooStr);
DIE *Mem = new DIE(dwarf::DW_TAG_member);
Mem->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &MemStr);
Mem->addValue(dwarf::DW_AT_data_member_location, dwarf::DW_FORM_data1,
&Zero);
DIE PtrToFooMem(dwarf::DW_TAG_ptr_to_member_type);
DIEEntry BarEntry(&Bar);
PtrToFooMem.addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &BarEntry);
DIEEntry FooEntry(&Foo);
PtrToFooMem.addValue(dwarf::DW_AT_containing_type, dwarf::DW_FORM_ref4,
&FooEntry);
DIEEntry PtrToFooMemRef(&PtrToFooMem);
Mem->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &PtrToFooMemRef);
Foo.addChild(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(DIEHashTest, PtrToMemberDeclDefMisMatch) {
DIEInteger Zero(0);
DIEInteger One(1);
DIEInteger Eight(8);
DIEString FooStr(&Eight, "foo");
DIEString BarStr(&Eight, "bar");
DIEString MemStr(&Eight, "mem");
uint64_t MD5ResDecl;
{
DIE Bar(dwarf::DW_TAG_structure_type);
Bar.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &BarStr);
Bar.addValue(dwarf::DW_AT_declaration, dwarf::DW_FORM_flag_present, &One);
DIE Foo(dwarf::DW_TAG_structure_type);
Foo.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Eight);
Foo.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &FooStr);
DIE *Mem = new DIE(dwarf::DW_TAG_member);
Mem->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &MemStr);
Mem->addValue(dwarf::DW_AT_data_member_location, dwarf::DW_FORM_data1,
&Zero);
DIE PtrToFooMem(dwarf::DW_TAG_ptr_to_member_type);
DIEEntry BarEntry(&Bar);
PtrToFooMem.addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &BarEntry);
PtrToFooMem.addValue(dwarf::DW_AT_containing_type, dwarf::DW_FORM_ref4,
&BarEntry);
DIEEntry PtrToFooMemRef(&PtrToFooMem);
Mem->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &PtrToFooMemRef);
Foo.addChild(Mem);
MD5ResDecl = DIEHash().computeTypeSignature(Foo);
}
uint64_t MD5ResDef;
{
DIE Bar(dwarf::DW_TAG_structure_type);
Bar.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &BarStr);
Bar.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &One);
DIE Foo(dwarf::DW_TAG_structure_type);
Foo.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Eight);
Foo.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &FooStr);
DIE *Mem = new DIE(dwarf::DW_TAG_member);
Mem->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &MemStr);
Mem->addValue(dwarf::DW_AT_data_member_location, dwarf::DW_FORM_data1,
&Zero);
DIE PtrToFooMem(dwarf::DW_TAG_ptr_to_member_type);
DIEEntry BarEntry(&Bar);
PtrToFooMem.addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &BarEntry);
PtrToFooMem.addValue(dwarf::DW_AT_containing_type, dwarf::DW_FORM_ref4,
&BarEntry);
DIEEntry PtrToFooMemRef(&PtrToFooMem);
Mem->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &PtrToFooMemRef);
Foo.addChild(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(DIEHashTest, RefUnnamedType) {
DIEInteger Zero(0);
DIEInteger One(1);
DIEInteger Eight(8);
DIEString FooStr(&Zero, "foo");
DIEString MemStr(&Zero, "mem");
DIE Unnamed(dwarf::DW_TAG_structure_type);
Unnamed.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &One);
DIE Foo(dwarf::DW_TAG_structure_type);
Foo.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Eight);
Foo.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &FooStr);
DIE *Mem = new DIE(dwarf::DW_TAG_member);
Mem->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &MemStr);
Mem->addValue(dwarf::DW_AT_data_member_location, dwarf::DW_FORM_data1, &Zero);
DIE UnnamedPtr(dwarf::DW_TAG_pointer_type);
UnnamedPtr.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Eight);
DIEEntry UnnamedRef(&Unnamed);
UnnamedPtr.addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &UnnamedRef);
DIEEntry UnnamedPtrRef(&UnnamedPtr);
Mem->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &UnnamedPtrRef);
Foo.addChild(Mem);
uint64_t MD5Res = DIEHash().computeTypeSignature(Foo);
ASSERT_EQ(0x954e026f01c02529ULL, MD5Res);
}
// struct { struct bar { }; };
TEST(DIEHashTest, NestedType) {
DIE Unnamed(dwarf::DW_TAG_structure_type);
DIEInteger One(1);
Unnamed.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &One);
DIE *Foo = new DIE(dwarf::DW_TAG_structure_type);
DIEString FooStr(&One, "foo");
Foo->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &FooStr);
Foo->addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &One);
Unnamed.addChild(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(DIEHashTest, MemberFunc) {
DIE Unnamed(dwarf::DW_TAG_structure_type);
DIEInteger One(1);
Unnamed.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &One);
DIE *Func = new DIE(dwarf::DW_TAG_subprogram);
DIEString FuncStr(&One, "func");
Func->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &FuncStr);
Unnamed.addChild(Func);
uint64_t MD5Res = DIEHash().computeTypeSignature(Unnamed);
// The exact same hash GCC produces for this DIE.
ASSERT_EQ(0xd36a1b6dfb604ba0ULL, MD5Res);
}
}
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