Howard Hinnant
|
b24c9441d1
|
One more small optimization: Where possible, for loops that do a search and then try to break out of the loop early, eliminate the attempt to break out of the loop after the last search. And with that, I'm declaring __dynamic_cast done. Though if anyone sees any problems, has suggestions for improvements, or wants to contribute some test cases, that is certainly welcome feedback.
llvm-svn: 148246
|
2012-01-16 18:21:05 +00:00 |
|
Howard Hinnant
|
44a2895a03
|
Comment smithing. Changed some casts from C-style to C++. And added timings to all of the tests.
llvm-svn: 148241
|
2012-01-16 17:06:51 +00:00 |
|
Howard Hinnant
|
77fb8ab9f2
|
I think this is getting close on __dynamic_cast. There's been quite a bit of code rearrangement, renaming, and better commenting. This exercise has exposed and fixed a few more bugs. I've also added several more tests (there's definitely a need for more tests here).
llvm-svn: 148227
|
2012-01-16 00:13:46 +00:00 |
|
Howard Hinnant
|
f55694af01
|
Two bug fixes, several clarifications, and a few comment updates.
llvm-svn: 148180
|
2012-01-14 14:15:43 +00:00 |
|
Howard Hinnant
|
fcf732c7a6
|
A bug fix involving the updating of path_dst_ptr_to_static_ptr. Some minor code rearrangement optimizations (putting most likely 'if' first in an if-else series. And some major optimizations which involve stopping the search prior to an exhaustive walk over the entire tree. Some of these stops are because an ambiguity is detected earlier. And some of the short circuiting is due to the information from the bits __diamond_shaped_mask and __non_diamond_repeat_mask. The stress test checked in last night is now about 28% faster for the B<Width/2, Depth> -O3 case. I'm still playing with some more optimization possibilities but I'm not sure they will play out.
llvm-svn: 148153
|
2012-01-13 23:06:03 +00:00 |
|
Howard Hinnant
|
50f7eeec9d
|
Enclosed is a stress test for dynamic_cast. It stresses both libc++abi, and clang itself. It creates a ridiculously large class hierarchy using variadic templates. You can specify both the width and depth of the class hierarchy. And you can specify whether the cast is to the actual run time type, or to an intermediate layer in the class. About 1/3 of the time I compile this, it crashes the compiler. There seems to be an uninitialized area of memory, and I'm probably blowing past an assumption on class hierarchy size within clang (and understandably so). I can get it work most of the time with a class hierarchy width of 20 and a depth of 7. I'm making timings with both -O3 and -Os, using both cast to root and cast to intermediate, on both libc++abi, and gcc's dynamic_cast. I've put the results in a comment/table at the bottom of the test.
llvm-svn: 148083
|
2012-01-13 01:22:31 +00:00 |
|
Howard Hinnant
|
b1ca881191
|
Oops, forgot to svn add the new test.
llvm-svn: 148047
|
2012-01-12 21:08:25 +00:00 |
|
Howard Hinnant
|
b7d59ec6e1
|
Put debug print statments under a flag so that I can get a first glimpse at performance. So far I haven't noticed any performance difference between this new __dynamic_cast and gcc's implementation. But I've barely started looking. Also adding a couple of tests which come straight out of the standard.
llvm-svn: 148046
|
2012-01-12 21:06:12 +00:00 |
|
Howard Hinnant
|
af07bfdb67
|
Fixed a couple of bugs, updated many comments, and am including a comprehensive test for when there are only 3 types in place. I need to do something similar for 4 and maybe more types, but I'm not sure how comprehensive I can make the test at 4 and above types.
llvm-svn: 148038
|
2012-01-12 19:48:14 +00:00 |
|
Howard Hinnant
|
f88480363e
|
Initial implementaiton of __dynamic_cast. There is still lots of debugging code in here that needs to be stripped out. And many, many unit tests need to be written. And comments and probably code cleanliness needs to be improved. But I *think* the basic algorithm is sound. There also may still be some oportunities for algorithm optimization, I'm not positive.
llvm-svn: 147981
|
2012-01-11 23:49:18 +00:00 |
|
Howard Hinnant
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d9e7393741
|
This is a transitory commit for __dynamic_cast. It contains debugging statements that are not intended to be in the finished product. However some of the dubbing statements themselves contain important documentation such as how to navigate a __class_type_info hierarchy, documenting object offset and inheritance access. The intention is that this debugging code will migrate into both actual code and comments. And capturing it here so that there is no chance this stuff will be lost.
llvm-svn: 147898
|
2012-01-11 00:11:17 +00:00 |
|
Howard Hinnant
|
d88ba82a47
|
Getting a start on the typeinfo infrastructure.
llvm-svn: 147776
|
2012-01-09 17:10:00 +00:00 |
|
Howard Hinnant
|
86b4dfac01
|
First brush with testing __gxx_personality_v0 reveals there is still a long way to go. But my understanding of what it is supposed to do continues to improve. I am currently contemplating whether I need to implement typeinfo before completing __gxx_personality_v0 in order to get matching catch handlers correct.
llvm-svn: 147761
|
2012-01-08 23:50:46 +00:00 |
|
Howard Hinnant
|
7530f19d03
|
Add a few TODO's and FIXME's. Making notes as I go along, but not slowing down to fix these yet. Just don't want anything to fall through the cracks.
llvm-svn: 147760
|
2012-01-08 23:40:41 +00:00 |
|
Howard Hinnant
|
5dc3179e5d
|
Correct comment regarding members of __cxa_dependent_exception. Actually it is useful to disguise a __cxa_dependent_exception as a __cxa_exception by filling in most (not all) of these members at __cxa_dependent_exception construction time. That way most routines don't have to care which kind of exception they have.
llvm-svn: 147759
|
2012-01-08 23:39:14 +00:00 |
|
Howard Hinnant
|
d3dba31762
|
__gxx_personality_v0 update. This is completely untested code. But my brain is scrambled and I wanted to get it checked in. Code review from anyone who knows anything at all about personality functions would be much appreciated. What is in here is borrowed heavily from llvm/examples/ExceptionDemo/ExceptionDemo.cpp. There are some calls to abort() that should probably be changed to return an error code instead. There may be encodings under readEncodedPointer that need to be implemented. And my handling of type_info is almost a complete guess.
llvm-svn: 147680
|
2012-01-06 20:39:47 +00:00 |
|
Marshall Clow
|
d2bab35080
|
Improved comment to explain why we can use __cxa_get_globals_fast here
llvm-svn: 147554
|
2012-01-04 22:18:10 +00:00 |
|
Howard Hinnant
|
66d9327b80
|
Just getting started on the personality routine. This is just a skeleton. Still learning how to fill it in...
llvm-svn: 147547
|
2012-01-04 20:49:43 +00:00 |
|
Marshall Clow
|
f368486f4c
|
Better comment
llvm-svn: 147532
|
2012-01-04 14:56:09 +00:00 |
|
Marshall Clow
|
f83663a9cd
|
Don't allocate TLS storage when checking to see if an exception has been thrown - really
llvm-svn: 147497
|
2012-01-03 23:26:09 +00:00 |
|
Marshall Clow
|
3e417e7a5c
|
Don't allocate TLS storage when checking to see if an exception has been thrown
llvm-svn: 147492
|
2012-01-03 23:10:20 +00:00 |
|
Howard Hinnant
|
f5bde09cc1
|
credits adjustment
llvm-svn: 147148
|
2011-12-22 16:00:06 +00:00 |
|
Marshall Clow
|
1de4fc0dfa
|
Updated __cxa_current_exception_type to call __cxa_get_globals_fast - will not allocate globals
llvm-svn: 147147
|
2011-12-22 15:45:05 +00:00 |
|
Howard Hinnant
|
2aa433398a
|
Updated spec.html regarding __cxa_uncaught_exception.
llvm-svn: 147110
|
2011-12-22 00:03:36 +00:00 |
|
Howard Hinnant
|
22f28b2d52
|
Forgot to increment uncaughtExceptions in __cxa_rethrow_primary_exception
llvm-svn: 147108
|
2011-12-21 23:48:05 +00:00 |
|
Howard Hinnant
|
e04f51662c
|
Added __cxa_increment_exception_refcount, __cxa_decrement_exception_refcount, __cxa_current_primary_exception, __cxa_rethrow_primary_exception
llvm-svn: 147106
|
2011-12-21 23:32:11 +00:00 |
|
Howard Hinnant
|
72a05a9198
|
Add new and delete operators
llvm-svn: 146989
|
2011-12-20 20:38:05 +00:00 |
|
Howard Hinnant
|
bf8a39bb94
|
Fixed several bugs, implemented support for vector types, and cleaned out dead code.
llvm-svn: 146677
|
2011-12-15 20:02:15 +00:00 |
|
Howard Hinnant
|
7a084fdd39
|
Fix size calculation for pointer to member function
llvm-svn: 146463
|
2011-12-13 01:23:16 +00:00 |
|
Howard Hinnant
|
58926c9a9b
|
Made some minor tweaks to __cxa_rethrow
llvm-svn: 146396
|
2011-12-12 19:11:42 +00:00 |
|
Howard Hinnant
|
7fcad54836
|
Added dependent exception support to __cxa_current_exception_type
llvm-svn: 146381
|
2011-12-12 18:16:10 +00:00 |
|
Howard Hinnant
|
8de583abf2
|
Added support for <special-name> ::= TC <first type> <number> _ <second type> # construction vtable for second-in-first, and for <special-name> ::= GR <object name> # reference temporary for object
llvm-svn: 146274
|
2011-12-09 20:07:56 +00:00 |
|
Howard Hinnant
|
6ccae15ef0
|
Modified __cxa_end_catch to handle dependent exceptions.
llvm-svn: 146172
|
2011-12-08 19:35:18 +00:00 |
|
Howard Hinnant
|
5ec9183afc
|
Reviewing cxa_exception.cpp and marking as implemented as I go. Not marking as implemented on arm when I'm not sure about that platform.
llvm-svn: 146072
|
2011-12-07 21:16:40 +00:00 |
|
Howard Hinnant
|
b3344a3ac7
|
Added __cxa_allocate_dependent_exception and __cxa_free_dependent_exception and marked them as done.
llvm-svn: 146045
|
2011-12-07 18:30:06 +00:00 |
|
Howard Hinnant
|
dfb34fcb1a
|
Substituted std::get_terminate() for direct access to the handler function pointer (which is now a static in cxa_handlers.cpp). This has the advantage of going through the atomic API and so is less likely to cause a data race. Ditto for unexpected.
llvm-svn: 145951
|
2011-12-06 19:02:03 +00:00 |
|
Howard Hinnant
|
987afbeede
|
Add/update copyright notices
llvm-svn: 145949
|
2011-12-06 18:01:47 +00:00 |
|
Howard Hinnant
|
2642af9e23
|
terminate, unexpected and new handlers. If terminating while an exception is unwinding, an attempt is made to print out the what() string if the exception is derived from std::exception. __terminate(handler) and __unexpected(handler) helpers are present in anticipation of other parts of libc++abi needing to call these interfaces with custom handlers.
llvm-svn: 145948
|
2011-12-06 17:51:25 +00:00 |
|
Howard Hinnant
|
dc82cca6bf
|
Updated heuristic regulating small string buffer
llvm-svn: 145543
|
2011-12-01 00:08:59 +00:00 |
|
Howard Hinnant
|
148b3f64ec
|
Add alignment requirement to char buffer
llvm-svn: 145277
|
2011-11-28 21:03:21 +00:00 |
|
Marshall Clow
|
9b454bc912
|
reformatted to match Clang style; thanks to John McCall for the nudge
llvm-svn: 137623
|
2011-08-15 18:06:47 +00:00 |
|
Howard Hinnant
|
26a9d23657
|
demangler: Drop preceeding () from function types, but not from pointers and references to function types
llvm-svn: 137469
|
2011-08-12 17:33:10 +00:00 |
|
Marshall Clow
|
8769449b61
|
First cut at exception handling; missing dependent exceptions. Next step: tests
llvm-svn: 137118
|
2011-08-09 15:09:41 +00:00 |
|
Howard Hinnant
|
49b607a2cd
|
Silence some -Wall warnings pointed out by Marshall Clow
llvm-svn: 137047
|
2011-08-08 15:49:07 +00:00 |
|
Marshall Clow
|
7c9f1fa9cf
|
Remove include reference to non-existant file cxa_exception_storage.hpp
llvm-svn: 137046
|
2011-08-08 15:12:08 +00:00 |
|
Nick Kledzik
|
2dfc79b19e
|
make cxxabi.h safe for C code to include
llvm-svn: 136682
|
2011-08-02 05:15:26 +00:00 |
|
Nick Kledzik
|
1c839a945b
|
use LIBCXXABI_NORETURN
llvm-svn: 136681
|
2011-08-02 05:01:31 +00:00 |
|
Nick Kledzik
|
12a10bc046
|
make LIBCXXABI_NORETURN be the right attribute
llvm-svn: 136680
|
2011-08-02 05:01:17 +00:00 |
|
Nick Kledzik
|
7cb4926da1
|
use abort_message() for pthread errors in __cxa_get_globals
llvm-svn: 136672
|
2011-08-02 01:34:26 +00:00 |
|
Nick Kledzik
|
18ab5f4164
|
use abort_message()
llvm-svn: 136671
|
2011-08-02 01:19:07 +00:00 |