Commit Graph

215 Commits

Author SHA1 Message Date
Raphael Isemann 0ed233c851 [lldb][NFC] Don't construct a ConstString twice in LibCxxVariant 2020-02-10 12:23:01 +01:00
Martin Storsjö 6115bd9ba2 [LLDB] Fix GCC warnings about extra semicolons. NFC. 2020-02-10 11:20:44 +02:00
Jonas Devlieghere fbb4d1e43d [lldb/Plugins] Use external functions to (de)initialize plugins
This is a step towards making the initialize and terminate calls be
generated by CMake, which in turn is towards making it possible to
disable plugins at configuration time.

Differential revision: https://reviews.llvm.org/D74245
2020-02-07 15:28:27 -08:00
Alex Langford 7c9ebdd3d6 [lldb] Remove clang classes from lldb-forward.h
Summary:
lldb-forward.h is convenient in many ways, but having clang-based
class forward declarations in there makes it easy to proliferate uses of clang
outside of plugins. Removing them makes you much more conscious of when
you're using something from clang and marks where we're using things
from clang in non-plugins.

Differential Revision: https://reviews.llvm.org/D73935
2020-02-04 14:23:58 -08:00
Alex Langford 8be30215fe [lldb] Move clang-based files out of Symbol
Summary:
This change represents the move of ClangASTImporter, ClangASTMetadata,
ClangExternalASTSourceCallbacks, ClangUtil, CxxModuleHandler, and
TypeSystemClang from lldbSource to lldbPluginExpressionParserClang.h

This explicitly removes knowledge of clang internals from lldbSymbol,
moving towards a more generic core implementation of lldb.

Reviewers: JDevlieghere, davide, aprantl, teemperor, clayborg, labath, jingham, shafik

Subscribers: emaste, mgorny, arphaman, jfb, usaxena95, lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D73661
2020-01-31 12:20:10 -08:00
Benjamin Kramer adcd026838 Make llvm::StringRef to std::string conversions explicit.
This is how it should've been and brings it more in line with
std::string_view. There should be no functional change here.

This is mostly mechanical from a custom clang-tidy check, with a lot of
manual fixups. It uncovers a lot of minor inefficiencies.

This doesn't actually modify StringRef yet, I'll do that in a follow-up.
2020-01-28 23:25:25 +01:00
Alex Langford c4f6fbe971 [lldb] Remove ClangASTImporter from Target
Target is one of the classes responsible for vending ClangASTImporter.
Target doesn't need to know anything about ClangASTImporter, so if we
instead have ClangPersistentVariables vend it, we can preserve
existing behavior while improving layering and removing dependencies
from non-plugins to plugins.
2020-01-28 13:40:49 -08:00
Raphael Isemann 808142876c [lldb][NFC] Fix all formatting errors in .cpp file headers
Summary:
A *.cpp file header in LLDB (and in LLDB) should like this:
```
//===-- TestUtilities.cpp -------------------------------------------------===//
```
However in LLDB most of our source files have arbitrary changes to this format and
these changes are spreading through LLDB as folks usually just use the existing
source files as templates for their new files (most notably the unnecessary
editor language indicator `-*- C++ -*-` is spreading and in every review
someone is pointing out that this is wrong, resulting in people pointing out that this
is done in the same way in other files).

This patch removes most of these inconsistencies including the editor language indicators,
all the different missing/additional '-' characters, files that center the file name, missing
trailing `===//` (mostly caused by clang-format breaking the line).

Reviewers: aprantl, espindola, jfb, shafik, JDevlieghere

Reviewed By: JDevlieghere

Subscribers: dexonsmith, wuzish, emaste, sdardis, nemanjai, kbarton, MaskRay, atanasyan, arphaman, jfb, abidh, jsji, JDevlieghere, usaxena95, lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D73258
2020-01-24 08:52:55 +01:00
Raphael Isemann 6e3b0cc2fb [lldb][NFC] Rename ClangASTContext to TypeSystemClang
Summary:
This commit renames ClangASTContext to TypeSystemClang to better reflect what this class is actually supposed to do
(implement the TypeSystem interface for Clang). It also gets rid of the very confusing situation that we have both a
`clang::ASTContext` and a `ClangASTContext` in clang (which sometimes causes Clang people to think I'm fiddling
with Clang's ASTContext when I'm actually just doing LLDB work).

I also have plans to potentially have multiple clang::ASTContext instances associated with one ClangASTContext so
the ASTContext naming will then become even more confusing to people.

Reviewers: #lldb, aprantl, shafik, clayborg, labath, JDevlieghere, davide, espindola, jdoerfert, xiaobai

Reviewed By: clayborg, labath, xiaobai

Subscribers: wuzish, emaste, nemanjai, mgorny, kbarton, MaskRay, arphaman, jfb, usaxena95, jingham, xiaobai, abidh, JDevlieghere, lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D72684
2020-01-23 10:09:14 +01:00
Alex Langford 3031818a2e [Target] Remove Target::GetScratchClangASTContext
Target doesn't really need to know about ClangASTContext more than any
other TypeSystem. We can create a method ClangASTContext::GetScratch for
anything who needs a ClangASTContext specifically instead of just a
generic TypeSystem.
2019-12-12 11:53:24 -08:00
Pavel Labath c16f0b18c1 [lldb/cpluspluslanguage] Add constructor substitutor
Summary:
This patch adds code which will substitute references to the full object
constructors/destructors with their base object versions.

Like all substitutions in this category, this operation is not really
sound, but doing this in a more precise way allows us to get rid of a
much larger hack -- matching function according to their demangled
names, which effectively does the same thing, but also much more.

This is a (very late) follow-up to D54074.

Background: clang has an optimization which can eliminate full object
structors completely, if they are found to be equivalent to their base
object versions. It does this because it assumes they can be regenerated
on demand in the compile unit that needs them (e.g., because they are
declared inline). However, this doesn't work for the debugging scenario,
where we don't have the structor bodies available -- we pretend all
constructors are defined out-of-line as far as clang is concerned. This
causes clang to emit references to the (nonexisting) full object
structors during expression evaluation.

Fun fact: This is not a problem on darwin, because the relevant
optimization is disabled to work around a linker bug.

Reviewers: teemperor, JDevlieghere

Subscribers: lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D70721
2019-12-05 12:44:51 +01:00
Eric Christopher 5312139f77 Add a default copy-assignment or copy-constructor for -Wdeprecated-copy warnings. 2019-12-04 20:35:32 -08:00
Jordan Rupprecht 506144da04 [lldb][DataFormatters] Support pretty printing std::string when built with -funsigned-char.
Summary:
When built w/ `-funsigned-char`, `std::string` becomes equivalent to `std::basic_string<unsigned char>`, causing these formatters to not match. This patch adds overloads for both libstdc++ and libc++ string formatters that accepts unsigned char.

Motivated by the following example:

```
$ cat pretty_print.cc

template <typename T>
void print_val(T s) {
  std::cerr << s << '\n';  // Set a breakpoint here!
}

int main() {
  std::string val = "hello";
  print_val(val);
  return 0;
}
$ clang++ -stdlib=libc++ -funsigned-char -fstandalone-debug -g pretty_print.cc
$ lldb ./a.out -b -o 'b pretty_print.cc:6' -o r -o 'fr v'
...
(lldb) fr v
(std::__1::basic_string<unsigned char, std::__1::char_traits<unsigned char>, std::__1::allocator<unsigned char> >) s = {
  __r_ = {
    std::__1::__compressed_pair_elem<std::__1::basic_string<unsigned char, std::__1::char_traits<unsigned char>, std::__1::allocator<unsigned char> >::__rep, 0, false> = {
      __value_ = {
         = {
          __l = (__cap_ = 122511465736202, __size_ = 0, __data_ = 0x0000000000000000)
          __s = {
             = (__size_ = '\n', __lx = '\n')
            __data_ = {
              [0] = 'h'
              [1] = 'e'
              [2] = 'l'
              [3] = 'l'
              [4] = 'o'
              [5] = '\0'
...
```

Reviewers: labath, JDevlieghere, shafik

Subscribers: christof, lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D70517
2019-11-22 10:25:03 -08:00
shafik 91e94a7015 [LLDB][Formatters] Re-enable std::function formatter with fixes to improve non-cached lookup performance
Performance issues lead to the libc++ std::function formatter to be disabled. We addressed some of those performance issues by adding caching see D67111
This PR fixes the first lookup performance by not using FindSymbolsMatchingRegExAndType(...) and instead finding the compilation unit the std::function wrapped callable should be in and then searching for the callable directly in the CU.

Differential Revision: https://reviews.llvm.org/D69913
2019-11-12 11:30:18 -08:00
shafik 83393d27af [LLDB] Fix handling for the clang name mangling extension for block invocations
Add support for clangs  mangling extension for block invocations.

Differential Revision: https://reviews.llvm.org/D69738
2019-11-06 14:20:00 -08:00
Cameron Desrochers 745e57c593 [LLDB] Fix for regression of test 'TestDataFormatterInvalidStdUniquePtr.py' introduced in r374195
Differential Revision: https://reviews.llvm.org/D68641

llvm-svn: 374231
2019-10-09 21:15:48 +00:00
Cameron Desrochers 89386daa95 [LLDB] Fix for synthetic children memory leak
The lifetime of a ValueObject and all its derivative ValueObjects (children, clones, etc.) is managed by a ClusterManager. These objects are only destroyed when every shared pointer to any of the managed objects in the cluster is destroyed. This means that no object in the cluster can store a shared pointer to another object in the cluster without creating a memory leak of the entire cluster. However, some of the synthetic children front-end implementations do exactly this; this patch fixes that.

Differential Revision: https://reviews.llvm.org/D68641

llvm-svn: 374195
2019-10-09 18:27:33 +00:00
Jan Kratochvil 5aa1d81969 Code cleanup: Change FormattersContainer::KeyType from SP to rvalue
There is now std::shared_ptr passed around which is expensive for manycore
CPUs. Most of the times (except for 3 cases) it is now just std::moved with no
CPU locks needed. It also makes it possible to sort the keys (which is now not
needed much after D66398).

Differential revision: https://reviews.llvm.org/D67049

llvm-svn: 370863
2019-09-04 09:47:18 +00:00
Jan Kratochvil b17d6c52fd [lldb] Fix `TestDataFormatterStdList` regression
Since D66174 I see failures of TestDataFormatterStdList in about 50% of runs on
Fedora 30 x86_64 libstdc++. I have found out that LLDB internally expects these
RegularExpressions to be matched in their alphabetical order:
	^std::(__cxx11::)?list<.+>(( )?&)?$
	^std::__[[:alnum:]]+::list<.+>(( )?&)?$

But since D66174 they are sometimes matched in reverse order. In fact it was
only some luck it worked before as there is internally
std::map<lldb::RegularExpressionSP, FormatterImpl> (FormattersContainer).

Differential Revision: https://reviews.llvm.org/D66398

llvm-svn: 369655
2019-08-22 14:29:52 +00:00
Jonas Devlieghere c46d39b9e8 Add char8_t support (C++20)
This patch adds support for the char8_t type introduced in C++20
char8_t. The original patch was submitted by James Blachly  on the LLDB
mailing list [1]. I modified the patch a bit and added a test.

[1] http://lists.llvm.org/pipermail/lldb-dev/2019-August/015393.html

Differential revision: https://reviews.llvm.org/D66447

llvm-svn: 369582
2019-08-21 21:30:55 +00:00
Shafik Yaghmour c5d4014535 [Formatters] Temporarily disable libc++ std::function formatter due to performance issue
Summary: We have been seeing increased reports of performance issue around large project and formatting std::function variables especially in functions signatures in back traces. There are some possible fixes but exploring those fixes may take time and it is better to temporarily disable the formatter due to its impact and re-enable it once we have a fix.

Differential Revision: https://reviews.llvm.org/D65666

llvm-svn: 367701
2019-08-02 18:16:04 +00:00
Alex Langford 0e252e38ef [Symbol] Use llvm::Expected when getting TypeSystems
Summary:
This commit achieves the following:
- Functions used to return a `TypeSystem *` return an
  `llvm::Expected<TypeSystem *>` now. This means that the result of a call
  is always checked, forcing clients to move more carefully.
- `TypeSystemMap::GetTypeSystemForLanguage` will either return an Error or a
  non-null pointer to a TypeSystem.

Reviewers: JDevlieghere, davide, compnerd

Subscribers: jdoerfert, lldb-commits

Differential Revision: https://reviews.llvm.org/D65122

llvm-svn: 367360
2019-07-30 22:12:34 +00:00
Alex Langford e0678ca547 [LanguageRuntime] Move CPPLanguageRuntime into a plugin
Summary: This seems better suited to be in a plugin.

Reviewers: JDevlieghere, clayborg, jingham, compnerd, labath

Subscribers: mgorny, lldb-commits

Differential Revision: https://reviews.llvm.org/D64599

llvm-svn: 365951
2019-07-12 20:09:32 +00:00
Alex Langford 45e78773eb [Target][NFC] Rename GetCPPLanguageRuntime to Get
This is a followup to rL362981, in which I moved GetObjCLanguageRuntime
from Process to ObjCLanguageRuntime, renaming it to Get along the way.

llvm-svn: 362984
2019-06-10 21:04:31 +00:00
Alex Langford 29975a2a5d [Target] Remove Process::GetCPPLanguageRuntime
Summary:
I want to remove this method because I think that Process should be
language agnostic, or at least, not have knowledge about specific language
runtimes. There is "GetLanguageRuntime()" which should be used instead. If the
caller a CPPLanguageRuntime, they should cast it as needed. Ideally, this
should only happen in plugins that need C++ specific knowledge.

The next step I would like to do is remove "GetObjCLanguageRuntime()" as well.
There are a lot more instances of that function being used, so I wanted to
upload this one first to get the general reception to this idea.

Reviewers: compnerd, davide, JDevlieghere, jingham, clayborg, labath, aprantl

Subscribers: lldb-commits

Differential Revision: https://reviews.llvm.org/D62755

llvm-svn: 362544
2019-06-04 20:14:33 +00:00
Adrian Prantl 4a585a3edd Make CPlusPlusNameParser robust against nullptr StringRefs.
There is likely also an underlying bug in all code that calls
CPlusPlusNameParser with nullptrs, but this patch can also stand for
itself.

rdar://problem/49072829

llvm-svn: 362177
2019-05-31 00:18:42 +00:00
Raphael Isemann 1756630dfa C.128 override, virtual keyword handling
Summary:
According to [C128] "Virtual functions should specify exactly one
of `virtual`, `override`, or `final`", I've added override where a
virtual function is overriden but the explicit `override` keyword
was missing. Whenever both `virtual` and `override` were specified,
I removed `virtual`. As C.128 puts it:

> [...] writing more than one of these three is both redundant and
> a potential source of errors.

I anticipate a discussion about whether or not to add `override` to
destructors but I went for it because of an example in [ISOCPP1000].
Let me repeat the comment for you here:

Consider this code:

```
    struct Base {
      virtual ~Base(){}
    };

    struct SubClass : Base {
      ~SubClass() {
        std::cout << "It works!\n";
      }
    };

    int main() {
      std::unique_ptr<Base> ptr = std::make_unique<SubClass>();
    }
```

If for some odd reason somebody removes the `virtual` keyword from the
`Base` struct, the code will no longer print `It works!`. So adding
`override` to destructors actively protects us from accidentally
breaking our code at runtime.

[C128]: https://github.com/isocpp/CppCoreGuidelines/blob/master/CppCoreGuidelines.md#c128-virtual-functions-should-specify-exactly-one-of-virtual-override-or-final
[ISOCPP1000]: https://github.com/isocpp/CppCoreGuidelines/issues/1000#issuecomment-476951555

Reviewers: teemperor, JDevlieghere, davide, shafik

Reviewed By: teemperor

Subscribers: kwk, arphaman, kadircet, lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D61440

llvm-svn: 359868
2019-05-03 10:03:28 +00:00
Raphael Isemann 05cfdb0eac Allow direct comparison of ConstString against StringRef
Summary:
When we want to compare a ConstString against a string literal (or any other non-ConstString),
we currently have to explicitly turn the other string into a ConstString. This makes sense as
comparing ConstStrings against each other is only a fast pointer comparison.

However, currently we (rather incorrectly) use in several places in LLDB temporary ConstStrings when
we just want to compare a given ConstString against a hardcoded value, for example like this:
```
if (extension != ConstString(".oat") && extension != ConstString(".odex"))
```

Obviously this kind of defeats the point of ConstStrings. In the comparison above we would
construct two temporary ConstStrings every time we hit the given code. Constructing a
ConstString is relatively expensive: we need to go to the StringPool, take a read and possibly
an exclusive write-lock and then look up our temporary string in the string map of the pool.
So we do a lot of heavy work for essentially just comparing a <6 characters in two strings.

I initially wanted to just fix these issues by turning the temporary ConstString in static variables/
members, but that made the code much less readable. Instead I propose to add a new overload
for the ConstString comparison operator that takes a StringRef. This comparison operator directly
compares the ConstString content against the given StringRef without turning the StringRef into
a ConstString.

This means that the example above can look like this now:
```
if (extension != ".oat" && extension != ".odex")
```
It also no longer has to unlock/lock two locks and call multiple functions in other TUs for constructing
the temporary ConstString instances. Instead this should end up just being a direct string comparison
of the two given strings on most compilers.

This patch also directly updates all uses of temporary and short ConstStrings in LLDB to use this new
comparison operator. It also adds a some unit tests for the new and old comparison operator.

Reviewers: #lldb, JDevlieghere, espindola, amccarth

Reviewed By: JDevlieghere, amccarth

Subscribers: amccarth, clayborg, JDevlieghere, emaste, arichardson, MaskRay, lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D60667

llvm-svn: 359281
2019-04-26 07:21:36 +00:00
Shafik Yaghmour abdb816b77 [DataFormatters] Adjusting libc++ std::list formatter to act better with pointers and references and adding a test to cover a previous related fix
Summary:
This previous fix 5469bda296 did not have a test since we did not have a reproducer.

This is related to how formatters deal with pointers and references. The added tests both the new behavior and covers the previous bug fix as well.

Differential Revision: https://reviews.llvm.org/D60588

llvm-svn: 359118
2019-04-24 17:38:40 +00:00
Jonas Devlieghere 8b3af63b89 [NFC] Remove ASCII lines from comments
A lot of comments in LLDB are surrounded by an ASCII line to delimit the
begging and end of the comment.

Its use is not really consistent across the code base, sometimes the
lines are longer, sometimes they are shorter and sometimes they are
omitted. Furthermore, it looks kind of weird with the 80 column limit,
where the comment actually extends past the line, but not by much.
Furthermore, when /// is used for Doxygen comments, it looks
particularly odd. And when // is used, it incorrectly gives the
impression that it's actually a Doxygen comment.

I assume these lines were added to improve distinguishing between
comments and code. However, given that todays editors and IDEs do a
great job at highlighting comments, I think it's worth to drop this for
the sake of consistency. The alternative is fixing all the
inconsistencies, which would create a lot more churn.

Differential revision: https://reviews.llvm.org/D60508

llvm-svn: 358135
2019-04-10 20:48:55 +00:00
Davide Italiano f6a84ed30b [Python] Start eradicating unneeded LLDB_DISABLE_PYTHON guards.
While we don't have a bot, I'm testing by hand that this configuration
compiles. We'll probably set up one once I'm done flensing.

llvm-svn: 356171
2019-03-14 17:23:08 +00:00
Jim Ingham 027bf7603f Check the result of creating a node from __next_ in the std::list formatter.
There's a single report of a crash coming from this current_sp being NULL.  I don't
have a repro case, and I couldn't get it to happen by hand-corrupting a list.  We
always get an error instead.  So I don't have a test case.  But checking for null
is clearly right here.

<rdar://problem/48503320>

llvm-svn: 355957
2019-03-12 19:27:39 +00:00
Adrian Prantl 0e4c482124 Pass ConstString by value (NFC)
My apologies for the large patch. With the exception of ConstString.h
itself it was entirely produced by sed.

ConstString has exactly one const char * data member, so passing a
ConstString by reference is not any more efficient than copying it by
value. In both cases a single pointer is passed. But passing it by
value makes it harder to accidentally return the address of a local
object.

(This fixes rdar://problem/48640859 for the Apple folks)

Differential Revision: https://reviews.llvm.org/D59030

llvm-svn: 355553
2019-03-06 21:22:25 +00:00
Shafik Yaghmour bb322e79c1 [DataFormatters] Fix regression in libc++ std::atomic formatter caused by https://reviews.llvm.org/D56913
rdar://problem/48568543

llvm-svn: 355422
2019-03-05 18:34:35 +00:00
Shafik Yaghmour 6ed191093d Revert "[DataFormatters] Fix regression in libc++ std::atomic formatter caused by https://reviews.llvm.org/D56913"
This reverts commit r355351.

llvm-svn: 355352
2019-03-05 00:29:58 +00:00
Shafik Yaghmour d38e41ec60 [DataFormatters] Fix regression in libc++ std::atomic formatter caused by https://reviews.llvm.org/D56913
rdar://problem/48568543

llvm-svn: 355351
2019-03-05 00:17:18 +00:00
Thomas Anderson 7ba2d3e872 [lldb] Relax libc++ ABI version checking
libc++ has programmable ABI versioning controllable with the _LIBCPP_ABI_VERSION
macro.  Currently there are at least 3 settings used in real systems (1 as the
default, ndk1 for Anroid, Cr for Chromium).

Only the 1 and ndk1 cases were handled.  This change relaxes the check to allow
any ABI version.

Differential Revision: https://reviews.llvm.org/D57466

llvm-svn: 352899
2019-02-01 19:10:39 +00:00
Chandler Carruth 2946cd7010 Update the file headers across all of the LLVM projects in the monorepo
to reflect the new license.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

llvm-svn: 351636
2019-01-19 08:50:56 +00:00
Adrian Prantl d6a9bbf68e Replace auto -> llvm::Optional<uint64_t>
This addresses post-commit feedback for https://reviews.llvm.org/D56688

llvm-svn: 351237
2019-01-15 20:33:58 +00:00
Adrian Prantl d963a7c398 Make CompilerType::getBitSize() / getByteSize() return an optional result. NFC
The code in LLDB assumes that CompilerType and friends use the size 0
as a sentinel value to signal an error. This works for C++, where no
zero-sized type exists, but in many other programming languages
(including I believe C) types of size zero are possible and even
common. This is a particular pain point in swift-lldb, where extra
code exists to double-check that a type is *really* of size zero and
not an error at various locations.

To remedy this situation, this patch starts by converting
CompilerType::getBitSize() and getByteSize() to return an optional
result. To avoid wasting space, I hand-rolled my own optional data
type assuming that no type is larger than what fits into 63
bits. Follow-up patches would make similar changes to the ValueObject
hierarchy.

rdar://problem/47178964

Differential Revision: https://reviews.llvm.org/D56688

llvm-svn: 351214
2019-01-15 18:07:52 +00:00
Jonas Devlieghere a6682a413d Simplify Boolean expressions
This patch simplifies boolean expressions acorss LLDB. It was generated
using clang-tidy with the following command:

run-clang-tidy.py -checks='-*,readability-simplify-boolean-expr' -format -fix $PWD

Differential revision: https://reviews.llvm.org/D55584

llvm-svn: 349215
2018-12-15 00:15:33 +00:00
Henry Wong 831be096c7 [lldb] NFC: Remove the extra ';'
Summary:
Remove extra `;` to eliminate the following pedantic warning.

```
warning: extra ';' [-Wpedantic]

```

Reviewers: shafik

Reviewed By: shafik

Subscribers: abidh, lldb-commits

Differential Revision: https://reviews.llvm.org/D54528

llvm-svn: 347047
2018-11-16 13:01:57 +00:00
Jonas Devlieghere ceff6644bb Remove header grouping comments.
This patch removes the comments grouping header includes. They were
added after running IWYU over the LLDB codebase. However they add little
value, are often outdates and burdensome to maintain.

llvm-svn: 346626
2018-11-11 23:17:06 +00:00
Eric Christopher c7f57aa885 Add a break to avoid an unannotated fall-through.
llvm-svn: 346294
2018-11-07 05:17:31 +00:00
Pavel Labath e0d2733bf6 CPlusPlusLanguage: Use new demangler API to implement type substitution
Summary:
Now that llvm demangler supports more generic customization, we can
implement type substitution directly on top of this API. This will allow
us to remove the specialized hooks which were added to the demangler to
support this use case.

Reviewers: sgraenitz, erik.pilkington, JDevlieghere

Subscribers: lldb-commits

Differential Revision: https://reviews.llvm.org/D54074

llvm-svn: 346233
2018-11-06 15:41:37 +00:00
Benjamin Kramer 98d9647d55 Add parens to silence warning
MSVCUndecoratedNameParser.cpp:25:36: warning: '&&' within '||' [-Wlogical-op-parentheses]

llvm-svn: 346220
2018-11-06 10:13:37 +00:00
Aleksandr Urakov c1e530ee92 [PDB] Introduce `MSVCUndecoratedNameParser`
This patch introduces the simple MSVCUndecoratedNameParser. It is needed for
parsing names of PDB symbols corresponding to template instantiations. For
example, for the name `operator<<A>'::`2'::B::operator> we can't just split the
name with :: (as it is implemented for now) to retrieve its scopes. This parser
processes such names in a more correct way.

Differential Revision: https://reviews.llvm.org/D52461

llvm-svn: 346213
2018-11-06 08:02:55 +00:00
Adrian Prantl eca07c592a Fix (and improve) the support for C99 variable length array types
Clang recently improved its DWARF support for C VLA types. The DWARF
now looks like this:

0x00000051:         DW_TAG_variable [4]
                     DW_AT_location( fbreg -32 )
                     DW_AT_name( "__vla_expr" )
                     DW_AT_type( {0x000000d3} ( long unsigned int ) )
                     DW_AT_artificial( true )
...
0x000000da:     DW_TAG_array_type [10] *
                 DW_AT_type( {0x000000cc} ( int ) )

0x000000df:         DW_TAG_subrange_type [11]
                     DW_AT_type( {0x000000e9} ( __ARRAY_SIZE_TYPE__ ) )
                     DW_AT_count( {0x00000051} )

Without this patch LLDB will naively interpret the DIE offset 0x51 as
the static size of the array, which is clearly wrong.  This patch
extends ValueObject::GetNumChildren to query the dynamic properties of
incomplete array types.

See the testcase for an example:

   4   int foo(int a) {
   5   	     int vla[a];
   6   	       for (int i = 0; i < a; ++i)
   7   	           vla[i] = i;
   8
-> 9            pause(); // break here
   10  		return vla[a-1];
   11   }

(lldb) fr v vla
(int []) vla = ([0] = 0, [1] = 1, [2] = 2, [3] = 3)
(lldb) quit

rdar://problem/21814005

Differential Revision: https://reviews.llvm.org/D53530

llvm-svn: 346165
2018-11-05 20:49:07 +00:00
Shafik Yaghmour 693fbf5c93 [DataFormatters] Adding formatters for libc++ std::u16string and std::u32string
rdar://problem/41302849

Differential Revision: https://reviews.llvm.org/D53656

llvm-svn: 345402
2018-10-26 17:00:48 +00:00
Shafik Yaghmour 8306f76e56 [DataFormatters] Add formatter for C++17 std::variant
rdar://problem/43691454

Patch by Shafik Yaghmour.

Differential Revision: https://reviews.llvm.org/D51520

llvm-svn: 342563
2018-09-19 18:07:05 +00:00
Shafik Yaghmour 2ee93d28fd Revert "[DataFormatters] Add formatter for C++17 std::variant"
This reverts commit r342421.

Because it breaks build bot http://green.lab.llvm.org/green/job/lldb-cmake-clang-5.0.2//418/console

llvm-svn: 342424
2018-09-17 23:15:35 +00:00
Shafik Yaghmour 854a35092c [DataFormatters] Add formatter for C++17 std::variant
rdar://problem/43691454

Patch by Shafik Yaghmour.

Differential Revision: https://reviews.llvm.org/D51520

llvm-svn: 342421
2018-09-17 22:10:44 +00:00
Shafik Yaghmour 443e20ba32 Refactoring std::function formatter to move core functionality into CPPLanguageRuntime
Patch by Shafik Yaghmour.

Differential Revision: https://reviews.llvm.org/D51896

llvm-svn: 341991
2018-09-11 20:58:28 +00:00
Shafik Yaghmour f4babefdf1 Undoing first commit which added a space to a comment
llvm-svn: 341881
2018-09-10 23:18:32 +00:00
Shafik Yaghmour 3875643928 First test commit into svn, adding space to comment
llvm-svn: 341879
2018-09-10 23:12:29 +00:00
Walter Lee d0ddf313c5 Fix format string issue introduced in r340548
Make format string portable.

llvm-svn: 340562
2018-08-23 18:26:26 +00:00
Adrian Prantl 6b58fa7120 Add libc++ data formatter for std::function
- Added LibcxxFunctionSummaryProvider
- Removed LibcxxFunctionFrontEnd
- Modified data formatter tests to test new summary functionality

Patch by Shafik Yaghmour!

Differential Revision: https://reviews.llvm.org/D50864

llvm-svn: 340543
2018-08-23 17:02:39 +00:00
Adrian Prantl c53d36847e Add libc++ data formatters for std::optional.
Patch by Shafik Yaghmour!

This reapplies an earlier version after addressing some post-commit feedback.

Differential Revision: https://reviews.llvm.org/D49271

llvm-svn: 339828
2018-08-15 22:48:48 +00:00
Stefan Granitz 44780cc3b9 Remove unused FastDemangle sources
llvm-svn: 339671
2018-08-14 11:32:51 +00:00
Stefan Granitz 5e6bd2f8a9 Straight forward FastDemangle replacement in SubsPrimitiveParmItanium
Summary:
Removing FastDemangle will greatly reduce maintenance efforts. This patch replaces the last point of use in LLDB. Semantics should be kept intact.

Once this is agreed upon, we can:
* Remove the FastDemangle sources
* Add more features e.g. substitutions in template parameters, considering all variations, etc.

Depends on LLVM patch https://reviews.llvm.org/D50586

Reviewers: erik.pilkington, friss, jingham, JDevlieghere

Subscribers: kristof.beyls, chrib, lldb-commits

Differential Revision: https://reviews.llvm.org/D50587

llvm-svn: 339583
2018-08-13 16:45:06 +00:00
Raphael Isemann 566afa0ab2 [LLDB] Added syntax highlighting support
Summary:
This patch adds syntax highlighting support to LLDB. When enabled (and lldb is allowed
to use colors), printed source code is annotated with the ANSI color escape sequences.

So far we have only one highlighter which is based on Clang and is responsible for all
languages that are supported by Clang. It essentially just runs the raw lexer over the input
and then surrounds the specific tokens with the configured escape sequences.

Reviewers: zturner, davide

Reviewed By: davide

Subscribers: labath, teemperor, llvm-commits, mgorny, lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D49334

llvm-svn: 338662
2018-08-02 00:30:15 +00:00
Davide Italiano 2d396a912a Revert "Recommit [DataFormatters] Add formatter for C++17 std::optional."
This broke a linux bot which doesn't support -std=c++17. The solution
is to add a decorator to skip these tests on machines with older compilers.

llvm-svn: 338162
2018-07-27 20:38:01 +00:00
Davide Italiano 1d44c46539 Recommit [DataFormatters] Add formatter for C++17 std::optional.
This should have all the correct files now.
<rdar://problem/41471112>
Patch by Shafik Yaghmour.

Differential Revision:  https://reviews.llvm.org/D49271

llvm-svn: 338156
2018-07-27 19:57:30 +00:00
Davide Italiano 4b58867d06 Revert "[DataFormatters] Add formatter for C++17 std::optional."
I forgot to git add some files. I'm going to recommit the correct
version at once soon.

llvm-svn: 337963
2018-07-25 21:18:20 +00:00
Davide Italiano 1d4a78ef04 [DataFormatters] Add formatter for C++17 std::optional.
<rdar://problem/41471112>

Patch by Shafik Yaghmour.

Differential Revision:  https://reviews.llvm.org/D49271

llvm-svn: 337959
2018-07-25 20:46:29 +00:00
Jim Ingham 393fe62e33 Fix the libcxx set, multiset, vector and bitset formatters to work on references.
The synthetic child providers for these classes had a type expression that matched
pointers & references to the type, but the Front End only worked on the actual object.

I fixed this by adding a way for the Synthetic Child FrontEnd provider to request dereference,
and then had these formatters use that mode.

<rdar://problem/40849836>

Differential Revision: https://reviews.llvm.org/D49279

llvm-svn: 337035
2018-07-13 19:28:32 +00:00
Pavel Labath cb512a3072 Fix tuple getter in std unique pointer pretty-printer
Summary: Check case when _M_t child member is not present.

Reviewers: labath, tberghammer

Reviewed By: labath, tberghammer

Differential Revision: https://reviews.llvm.org/D47932
Patch by Aleksandr Urakov <aleksandr.urakov@jetbrains.com>.

llvm-svn: 334411
2018-06-11 14:52:52 +00:00
Raphael Isemann 59949471c9 Fix memory leak in SubsPrimitiveParmItanium
Summary:
FastDemangle gives us a C-string that we own (which is allocated in SymbolDemangler::GetDemangledCopy).
As we are not deleting the string, we leak memory whenever we call SubsPrimitiveParmItanium.

Reviewers: javed.absar

Subscribers: kristof.beyls, chrib, lldb-commits

Differential Revision: https://reviews.llvm.org/D47418

llvm-svn: 333353
2018-05-27 07:31:06 +00:00
Adrian Prantl 05097246f3 Reflow paragraphs in comments.
This is intended as a clean up after the big clang-format commit
(r280751), which unfortunately resulted in many of the comment
paragraphs in LLDB being very hard to read.

FYI, the script I used was:

import textwrap
import commands
import os
import sys
import re
tmp = "%s.tmp"%sys.argv[1]
out = open(tmp, "w+")
with open(sys.argv[1], "r") as f:
  header = ""
  text = ""
  comment = re.compile(r'^( *//) ([^ ].*)$')
  special = re.compile(r'^((([A-Z]+[: ])|([0-9]+ )).*)|(.*;)$')
  for line in f:
      match = comment.match(line)
      if match and not special.match(match.group(2)):
          # skip intentionally short comments.
          if not text and len(match.group(2)) < 40:
              out.write(line)
              continue

          if text:
              text += " " + match.group(2)
          else:
              header = match.group(1)
              text = match.group(2)

          continue

      if text:
          filled = textwrap.wrap(text, width=(78-len(header)),
                                 break_long_words=False)
          for l in filled:
              out.write(header+" "+l+'\n')
              text = ""

      out.write(line)

os.rename(tmp, sys.argv[1])

Differential Revision: https://reviews.llvm.org/D46144

llvm-svn: 331197
2018-04-30 16:49:04 +00:00
Pavel Labath b312b13960 Fix std unique pointer pretty-printer for new stl versions
Summary: The unique pointer layout was changed in libstdc++ 6.0.23.

Reviewers: labath, clayborg

Reviewed By: labath, clayborg

Subscribers: luporl, lbianc, lldb-commits

Differential Revision: https://reviews.llvm.org/D44015
Patch by Alexandre Yukio Yamashita <alexandre.yamashita@eldorado.org.br>.

llvm-svn: 327017
2018-03-08 16:03:09 +00:00
Aaron Smith b38799c105 Recognize MSVC style mangling in CPlusPlusLanguage::IsCPPMangledName
Reviewers: zturner, lldb-commits, labath

Reviewed By: zturner

Subscribers: jingham, labath, davide, llvm-commits

Differential Revision: https://reviews.llvm.org/D43059

llvm-svn: 324672
2018-02-08 23:11:56 +00:00
Eugene Zemtsov 9e916e5e0e More correct handling of error cases C++ name parser
Now incorrect type argument that looks like T<A><B> doesn't
cause an assert, but just a parsing error.

Bug: 36224
Differential Revision: https://reviews.llvm.org/D42939

llvm-svn: 324380
2018-02-06 19:04:12 +00:00
Aaron Ballman 05b618e31f Switch from C++1z to C++17; corresponds to r319688 in Clang.
llvm-svn: 319694
2017-12-04 20:46:43 +00:00
Pavel Labath f59056ff93 Fix assertion in ClangASTContext
Summary:
llvm::APSInt(0) asserts because it creates an int with bit-width 0 and
not (as I thought) a value 0.

Theoretically it should be sufficient to change this to APSInt(1), as
the intention there was that the value of the first argument should be
ignored if the type is invalid, but that would look dodgy.

Instead, I use llvm::Optional to denote an invalid value and use a
special struct instead of a std::pair, to reduce typing and increase
clarity.

Reviewers: clayborg

Subscribers: lldb-commits

Differential Revision: https://reviews.llvm.org/D40615

llvm-svn: 319414
2017-11-30 10:16:54 +00:00
Pavel Labath 5269875ef9 Add a data formatter for libc++ std::bitset
Reviewers: jingham, EricWF

Subscribers: mgorny, lldb-commits

Differential Revision: https://reviews.llvm.org/D39966

llvm-svn: 318145
2017-11-14 11:15:03 +00:00
Pavel Labath 769b21eaf2 CompilerType: Add ability to retrieve an integral template argument
Summary:
Despite it's name, GetTemplateArgument was only really working for Type
template arguments. This adds the ability to retrieve integral arguments
as well (which I've needed for the std::bitset data formatter).

I've done this by splitting the function into three pieces. The idea is
that one first calls GetTemplateArgumentKind (first function) to
determine the what kind of a parameter this is. Based on that, one can
then use specialized functions to retrieve the correct value. Currently,
I only implement two of these: GetTypeTemplateArgument and
GetIntegralTemplateArgument.

Reviewers: jingham, clayborg

Subscribers: lldb-commits

Differential Revision: https://reviews.llvm.org/D39844

llvm-svn: 318040
2017-11-13 14:26:21 +00:00
Pavel Labath 4c0461f8ce Update tuple/list/deque data formatters to work with newest libc++
Summary:
A couple of members of these data structures have been renamed in recent
months. This makes sure they still work with the latest libc++ version.

Reviewers: jingham, EricWF

Subscribers: lldb-commits

Differential Revision: https://reviews.llvm.org/D39602

llvm-svn: 317624
2017-11-07 22:17:29 +00:00
Pavel Labath e0d51846f2 Add data formatter for libc++ std::queue
Summary:
std::queue is just a fancy wrapper around another container, so all we
need to do is to delegate to the it.

Reviewers: jingham, EricWF

Subscribers: srhines, mgorny, lldb-commits, eugene

Differential Revision: https://reviews.llvm.org/D35666

llvm-svn: 317099
2017-11-01 15:52:08 +00:00
Pavel Labath 333739d0e2 Add data formatter for libc++ std::tuple
Reviewers: jingham, EricWF

Subscribers: srhines, eugene, lldb-commits, mgorny

Differential Revision: https://reviews.llvm.org/D35615

llvm-svn: 317095
2017-11-01 15:19:52 +00:00
Pavel Labath 89ac0c7d32 Add data formatter for libc++'s forward_list
Summary:
This adds a data formatter for the implementation of forward_list in
libc++. I've refactored the existing std::list data formatter a bit to
enable more sharing of code (mainly the loop detection stuff).

Reviewers: jingham, EricWF

Subscribers: srhines, eugene, lldb-commits

Differential Revision: https://reviews.llvm.org/D35556

llvm-svn: 316992
2017-10-31 12:27:43 +00:00
Jim Ingham 055e65f0d4 Enable parsing C++ names generated by lambda functions.
https://reviews.llvm.org/D34911 from Weng Xuetian.

llvm-svn: 307944
2017-07-13 19:48:43 +00:00
Zachary Turner 97206d5727 Rename Error -> Status.
This renames the LLDB error class to Status, as discussed
on the lldb-dev mailing list.

A change of this magnitude cannot easily be done without
find and replace, but that has potential to catch unwanted
occurrences of common strings such as "Error".  Every effort
was made to find all the obvious things such as the word "Error"
appearing in a string, etc, but it's possible there are still
some lingering occurences left around.  Hopefully nothing too
serious.

llvm-svn: 302872
2017-05-12 04:51:55 +00:00
Pavel Labath a193a4c8b3 Remove unused code related to CPlusPlusLanguage::FindEquivalentNames
Summary: It is simply unused, and the header for it is private, so there should be no external dependencies.

Reviewers: #lldb, zturner

Reviewed By: zturner

Subscribers: zturner, tberghammer, jingham, lldb-commits

Differential Revision: https://reviews.llvm.org/D32503
Patch by Scott Smith <scott.smith@purestorage.com>.

llvm-svn: 301903
2017-05-02 09:00:52 +00:00
Lang Hames 6cc3354dd6 Fix libcxx formatters for changes in r300140.
Summary:
LLVM r300140 changed the layout and field names of __compressed_pair, which
broke LLDB's std::vector, std::map and std::unsorted_map formatters.

This patch attempts to fix these formatters by having them interogate the
__compressed_pair values to determine whether they're pre- or post-r300140
variants, then access them accordingly.

Reviewers: jingham, EricWF

Reviewed By: jingham

Differential Revision: https://reviews.llvm.org/D32554

llvm-svn: 301493
2017-04-26 23:29:59 +00:00
Lang Hames 088d001f05 Use llvm::ArrayRef rather than std::vector/std::initializer lists for some
ValueObject methods.

Using ArrayRef allows us to remove some overloads, work with more array-like
types, and avoid some std::vector temporaries.

https://reviews.llvm.org/D32518

llvm-svn: 301441
2017-04-26 18:15:40 +00:00
Pavel Labath f0565cc84a Add libc++ category to the remaining libc++ data formatters
llvm-svn: 300054
2017-04-12 12:32:58 +00:00
Pavel Labath d3656a03ab Fix libc++ vector<bool> data formatter (bug #32553)
Summary:
The iteration list through the available data formatters was undefined,
which meant that the vector<bool> formatter kicked in only in cases
where it happened to be queried before the general vector formatter. To
fix this, I merge the two data formatter entries into one, and select
which implementation to use in the factory function.

Reviewers: jasonmolenda, tberghammer, EricWF

Subscribers: lldb-commits

Differential Revision: https://reviews.llvm.org/D31880

llvm-svn: 300047
2017-04-12 10:59:24 +00:00
Eugene Zemtsov a633ee6e4a New C++ function name parsing logic (Resubmit)
Current implementation of CPlusPlusLanguage::MethodName::Parse() doesn't
get anywhere close to covering full extent of possible function declarations.
It causes incorrect behavior in avoid-stepping and sometimes messes
printing of thread backtrace.

This change implements more methodical parsing logic based on clang
lexer and simple recursive parser.

Examples:
void std::vector<Class, std::allocator<Class>>::_M_emplace_back_aux<Class const&>(Class const&)
void (*&std::_Any_data::_M_access<void (*)()>())()

Previous version of this change (D31451) was rolled back due to an issue
with Objective-C selectors being incorrectly recognized as a C++ identifier.

Differential Revision: https://reviews.llvm.org/D31451

llvm-svn: 299721
2017-04-06 22:36:02 +00:00
Jim Ingham 9645a6290a Reverting r299374 & r299402 due to testsuite failure.
This caused a failure in the test case:

  functionalities/breakpoint/objc/TestObjCBreakpoints.py

When we are parsing up names we stick interesting parts of the names
in various buckets, one of which is the ObjC selector bucket.  The new
C++ name parser must be interfering with this process somehow.

<rdar://problem/31439305>

llvm-svn: 299489
2017-04-05 00:08:21 +00:00
Eugene Zemtsov 699a748893 New C++ function name parsing logic
Current implementation of CPlusPlusLanguage::MethodName::Parse() doesn't
get anywhere close to covering full extent of possible function declarations.
It causes incorrect behavior in avoid-stepping and sometimes messes
printing of thread backtrace.

This change implements more methodical parsing logic based on clang
lexer and simple recursive parser.

Examples:
void std::vector<Class, std::allocator<Class>>::_M_emplace_back_aux<Class const&>(Class const&)
void (*&std::_Any_data::_M_access<void (*)()>())()

Differential Revision: https://reviews.llvm.org/D31451

llvm-svn: 299374
2017-04-03 18:59:34 +00:00
Tamas Berghammer 4fbb55b7b1 Stop calling ValueObject::SetName from synthetic child providers
Summary:
Calling ValueObject::SetName from a sythetic child provider would change
the underying value object used for the non-synthetic child as well what
is clearly unintentional.

Reviewers: jingham, labath

Subscribers: lldb-commits

Differential Revision: https://reviews.llvm.org/D31371

llvm-svn: 299259
2017-03-31 20:48:00 +00:00
Tamas Berghammer 4c08fe2841 Add support for sythetic operator dereference
Summary:
After this change a sythetic child provider can generate a special child
named "$$dereference$$" what if present is used when "operator*" or
"operator->" used on a ValueObject. The goal of the change is to make
expressions like "up->foo" work inside the "frame variable" command.

Reviewers: labath, jingham

Subscribers: lldb-commits

Differential Revision: https://reviews.llvm.org/D31368

llvm-svn: 299251
2017-03-31 20:23:22 +00:00
Tamas Berghammer af8953a025 Do not dereference std::unique_ptr by default
Summary:
Displaying the object pointed by the unique_ptr can cause an infinite
recursion when we have a pointer loop so this change stops that
behavior. Additionally it makes the unique_ptr act more like a class
containing a pointer (what is the underlying truth) instead of some
"magic" class.

Reviewers: labath, jingham

Differential Revision: https://reviews.llvm.org/D31366

llvm-svn: 299249
2017-03-31 20:07:20 +00:00
Zachary Turner fb1a0a0d2f Move many other files from Core -> Utility.
llvm-svn: 297043
2017-03-06 18:34:25 +00:00
Zachary Turner 666cc0b291 Move DataBuffer / DataExtractor and friends from Core -> Utility.
llvm-svn: 296943
2017-03-04 01:30:05 +00:00
Zachary Turner 6f9e690199 Move Log from Core -> Utility.
All references to Host and Core have been removed, so this
class can now safely be lowered into Utility.

Differential Revision: https://reviews.llvm.org/D30559

llvm-svn: 296909
2017-03-03 20:56:28 +00:00
Jason Molenda 6b652bea30 Three LoadLibCxxFormatters formatters were given a regex string to
match but the 'is_regex' argument was not passed as true.  Not sure
this is causing a bug, but noticed it while working on another bug.
These formatters gained a regex in r274489 for NDK but didn't pick
up the is_regex flag at the time.
<rdar://problem/30646077> 

llvm-svn: 296243
2017-02-25 05:43:51 +00:00
Zachary Turner 01c3243fc1 Remove dependencies from Utility to Core and Target.
With this patch, the only dependency left is from Utility
to Host.  After this is broken, Utility will finally be
standalone.

Differential Revision: https://reviews.llvm.org/D29909

llvm-svn: 295088
2017-02-14 19:06:07 +00:00
Kamil Rytarowski c5f28e2a05 Switch std::call_once to llvm::call_once
Summary:
The std::call_once implementation in libstdc++ has problems on few systems: NetBSD, OpenBSD and Linux PPC. LLVM ships with a homegrown implementation llvm::call_once to help on these platforms.

This change is required in the NetBSD LLDB port. std::call_once with libstdc++ results with crashing the debugger.

Sponsored by <The NetBSD Foundation>

Reviewers: labath, joerg, emaste, mehdi_amini, clayborg

Reviewed By: labath, clayborg

Subscribers: #lldb

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D29288

llvm-svn: 294202
2017-02-06 17:55:02 +00:00
Zachary Turner bf9a77305f Move classes from Core -> Utility.
This moves the following classes from Core -> Utility.

ConstString
Error
RegularExpression
Stream
StreamString

The goal here is to get lldbUtility into a state where it has
no dependendencies except on itself and LLVM, so it can be the
starting point at which to start untangling LLDB's dependencies.
These are all low level and very widely used classes, and
previously lldbUtility had dependencies up to lldbCore in order
to use these classes.  So moving then down to lldbUtility makes
sense from both the short term and long term perspective in
solving this problem.

Differential Revision: https://reviews.llvm.org/D29427

llvm-svn: 293941
2017-02-02 21:39:50 +00:00