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Louis Dionne 6b653fc70f [libc++] Disentangle the 3 implementations of type_info 
Summary:
We currently have effectively 3 implementations of type_info: one for
the Microsoft ABI, one that does not assume that there's a unique copy
of each RTTI in a progran, and one that assumes a unique copy.

Those 3 implementations are entangled into the same class with nested
ifdefs, which makes it very difficult to understand. Furthermore, the
benefit of doing this is rather small since the code that is duplicated
across implementations is just a couple of trivial lines.

This patch stamps out the 3 versions of type_info explicitly to increase
readability. It also explains what's going on with short comments, because
it's far from obvious.

Reviewers: EricWF, mclow.lists

Subscribers: christof, jkorous, dexonsmith

Differential Revision: https://reviews.llvm.org/D57606

llvm-svn: 352905
 		2019-02-01 20:00:13 +00:00
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experimental Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
ext Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
support Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
CMakeLists.txt [libcxx] Remove dynarray 2018-11-28 18:02:00 +00:00
__bit_reference Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
__bsd_locale_defaults.h Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
__bsd_locale_fallbacks.h Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
__config [libc++] Don't define operator new/delete when using vcruntime 2019-01-30 19:08:32 +00:00
__config_site.in Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
__debug Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
__errc Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
__functional_03 Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
__functional_base Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
__functional_base_03 Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
__hash_table Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
__libcpp_version Bump the trunk version to 9.0.0svn 2019-01-16 10:57:02 +00:00
__locale Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
__mutex_base Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
__node_handle Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
__nullptr Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
__split_buffer [Libc++] Use #pragma push_macro/pop_macro to better handle min/max on Windows 2017-05-31 22:07:49 +00:00
__sso_allocator Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
__std_stream Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
__string Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
__threading_support Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
__tree Apply D28248: 'Work around GCC PR37804'. Thanks to mdaniels for the patch 2019-01-23 23:06:18 +00:00
__tuple Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
__undef_macros Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
algorithm D14686: 'Protect against overloaded comma in random_shuffle and improve tests' I had to cut back on the tests with this, because they were not C++03 friendly. Thanks to gribozavr for the patch 2019-01-24 19:20:19 +00:00
any Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
array Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
atomic Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
bit Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
bitset Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
cassert Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
ccomplex Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
cctype Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
cerrno Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
cfenv Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
cfloat Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
charconv Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
chrono Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
cinttypes Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
ciso646 Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
climits Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
clocale Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
cmath Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
codecvt Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
compare Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
complex Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
complex.h Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
condition_variable Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
csetjmp Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
csignal Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
cstdarg Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
cstdbool Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
cstddef Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
cstdint Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
cstdio Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
cstdlib Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
cstring Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
ctgmath Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
ctime Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
ctype.h Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
cwchar Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
cwctype Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
deque Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
errno.h Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
exception Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
filesystem [libc++] Fix Windows build error in include/filesystem 2019-01-29 18:48:35 +00:00
float.h Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
forward_list Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
fstream Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
functional [libc++] Fix Windows build error in <functional> 2019-01-29 23:19:45 +00:00
future Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
initializer_list Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
inttypes.h Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
iomanip Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
ios Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
iosfwd Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
iostream Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
istream Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
iterator Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
limits Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
limits.h Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
list Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
locale Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
locale.h Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
map Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
math.h Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
memory Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
module.modulemap [libcxx] Remove dynarray 2018-11-28 18:02:00 +00:00
mutex Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
new Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
numeric Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
optional Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
ostream Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
queue Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
random Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
ratio Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
regex Change a couple of '&' to addressof(). NFC 2019-01-24 02:02:50 +00:00
scoped_allocator Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
set Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
setjmp.h Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
shared_mutex Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
span Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
sstream Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
stack Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
stdbool.h Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
stddef.h Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
stdexcept Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
stdint.h Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
stdio.h Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
stdlib.h Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
streambuf Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
string Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
string.h Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
string_view Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
strstream Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
system_error Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
tgmath.h Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
thread Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
tuple Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
type_traits Fix PR40495 - is_invokable_v<void> does not compile 2019-01-29 18:01:14 +00:00
typeindex Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
typeinfo [libc++] Disentangle the 3 implementations of type_info 2019-02-01 20:00:13 +00:00
unordered_map Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
unordered_set Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
utility Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
valarray Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
variant Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
vector Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
version Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
wchar.h Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
wctype.h Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00