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llvm-6502/unittests/CodeGen/DIEHashTest.cpp
Frederic Riss 0c36e97b78 Make DIE.h a public CodeGen header. 
dsymutil would like to use all the AsmPrinter/MCStreamer infrastructure
to stream out the DWARF. In order to do so, it will reuse the DIE object
and so this header needs to be public.

The interface exposed here has some corners that cannot be used without a
DwarfDebug object, but clients that want to stream Dwarf can just avoid
these.

Differential Revision: http://reviews.llvm.org/D6695

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225208 91177308-0d34-0410-b5e6-96231b3b80d8
2015-01-05 21:29:41 +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 "llvm/CodeGen/DIE.h"
#include "../lib/CodeGen/AsmPrinter/DIEHash.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/Dwarf.h"
#include "llvm/Support/Format.h"
#include "llvm/ADT/STLExtras.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);
auto Space = make_unique<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?
auto Foo = make_unique<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);
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(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 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);
auto Member = make_unique<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);
Member->addValue(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(DIEHashTest, ReusedType) {
DIE Unnamed(dwarf::DW_TAG_structure_type);
DIEInteger Eight(8);
Unnamed.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Eight);
DIEInteger Four(4);
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);
auto Mem1 = make_unique<DIE>(dwarf::DW_TAG_member);
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);
Mem1->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &IntRef);
Unnamed.addChild(std::move(Mem1));
auto Mem2 = make_unique<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);
Mem2->addValue(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(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);
auto Mem = make_unique<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(std::move(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);
auto Mem = make_unique<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(std::move(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);
auto Mem = make_unique<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(std::move(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);
auto Mem = make_unique<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(std::move(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);
auto Mem = make_unique<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(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(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);
auto Mem = make_unique<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(std::move(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);
auto Mem = make_unique<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(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(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);
auto Mem = make_unique<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(std::move(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);
auto Mem = make_unique<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(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(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);
auto Mem = make_unique<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(std::move(Mem));
uint64_t MD5Res = DIEHash().computeTypeSignature(Foo);
ASSERT_EQ(0x954e026f01c02529ULL, MD5Res);
}
// struct { struct foo { }; };
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);
auto Foo = make_unique<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(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(DIEHashTest, MemberFunc) {
DIE Unnamed(dwarf::DW_TAG_structure_type);
DIEInteger One(1);
Unnamed.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &One);
auto Func = make_unique<DIE>(dwarf::DW_TAG_subprogram);
DIEString FuncStr(&One, "func");
Func->addValue(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(DIEHashTest, MemberFuncFlag) {
DIE A(dwarf::DW_TAG_structure_type);
DIEInteger One(1);
DIEString AStr(&One, "A");
A.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &AStr);
A.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &One);
A.addValue(dwarf::DW_AT_decl_file, dwarf::DW_FORM_data1, &One);
A.addValue(dwarf::DW_AT_decl_line, dwarf::DW_FORM_data1, &One);
auto Func = make_unique<DIE>(dwarf::DW_TAG_subprogram);
DIEString FuncStr(&One, "func");
DIEString FuncLinkage(&One, "_ZN1A4funcEv");
DIEInteger Two(2);
Func->addValue(dwarf::DW_AT_external, dwarf::DW_FORM_flag_present, &One);
Func->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &FuncStr);
Func->addValue(dwarf::DW_AT_decl_file, dwarf::DW_FORM_data1, &One);
Func->addValue(dwarf::DW_AT_decl_line, dwarf::DW_FORM_data1, &Two);
Func->addValue(dwarf::DW_AT_linkage_name, dwarf::DW_FORM_strp, &FuncLinkage);
Func->addValue(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(DIEHashTest, MemberSdata) {
DIE A(dwarf::DW_TAG_structure_type);
DIEInteger One(1);
DIEString AStr(&One, "A");
A.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &AStr);
A.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &One);
A.addValue(dwarf::DW_AT_decl_file, dwarf::DW_FORM_data1, &One);
A.addValue(dwarf::DW_AT_decl_line, dwarf::DW_FORM_data1, &One);
DIEInteger Four(4);
DIEInteger Five(5);
DIEString FStr(&One, "int");
DIE IntTyDIE(dwarf::DW_TAG_base_type);
IntTyDIE.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Four);
IntTyDIE.addValue(dwarf::DW_AT_encoding, dwarf::DW_FORM_data1, &Five);
IntTyDIE.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &FStr);
DIEEntry IntTy(IntTyDIE);
auto PITyDIE = make_unique<DIE>(dwarf::DW_TAG_const_type);
PITyDIE->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &IntTy);
DIEEntry PITy(*PITyDIE);
auto PI = make_unique<DIE>(dwarf::DW_TAG_member);
DIEString PIStr(&One, "PI");
DIEInteger Two(2);
DIEInteger NegThree(-3);
PI->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &PIStr);
PI->addValue(dwarf::DW_AT_decl_file, dwarf::DW_FORM_data1, &One);
PI->addValue(dwarf::DW_AT_decl_line, dwarf::DW_FORM_data1, &Two);
PI->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &PITy);
PI->addValue(dwarf::DW_AT_external, dwarf::DW_FORM_flag_present, &One);
PI->addValue(dwarf::DW_AT_declaration, dwarf::DW_FORM_flag_present, &One);
PI->addValue(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(DIEHashTest, MemberBlock) {
DIE A(dwarf::DW_TAG_structure_type);
DIEInteger One(1);
DIEString AStr(&One, "A");
A.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &AStr);
A.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &One);
A.addValue(dwarf::DW_AT_decl_file, dwarf::DW_FORM_data1, &One);
A.addValue(dwarf::DW_AT_decl_line, dwarf::DW_FORM_data1, &One);
DIEInteger Four(4);
DIEString FStr(&One, "float");
auto FloatTyDIE = make_unique<DIE>(dwarf::DW_TAG_base_type);
FloatTyDIE->addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Four);
FloatTyDIE->addValue(dwarf::DW_AT_encoding, dwarf::DW_FORM_data1, &Four);
FloatTyDIE->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &FStr);
DIEEntry FloatTy(*FloatTyDIE);
auto PITyDIE = make_unique<DIE>(dwarf::DW_TAG_const_type);
PITyDIE->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &FloatTy);
DIEEntry PITy(*PITyDIE);
auto PI = make_unique<DIE>(dwarf::DW_TAG_member);
DIEString PIStr(&One, "PI");
DIEInteger Two(2);
PI->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &PIStr);
PI->addValue(dwarf::DW_AT_decl_file, dwarf::DW_FORM_data1, &One);
PI->addValue(dwarf::DW_AT_decl_line, dwarf::DW_FORM_data1, &Two);
PI->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &PITy);
PI->addValue(dwarf::DW_AT_external, dwarf::DW_FORM_flag_present, &One);
PI->addValue(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((dwarf::Attribute)0, dwarf::DW_FORM_data1, &Blk1);
PIBlock.addValue((dwarf::Attribute)0, dwarf::DW_FORM_data1, &Blk2);
PIBlock.addValue((dwarf::Attribute)0, dwarf::DW_FORM_data1, &Blk3);
PIBlock.addValue((dwarf::Attribute)0, dwarf::DW_FORM_data1, &Blk4);
PI->addValue(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);
}
}
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