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(#162050)
Depends on https://github.com/llvm/llvm-project/pull/162048
This makes sure we also include the version number in the description.
For `C++17`, this would, e.g., now return `"C++17"` instead of `"ISO
C++"`.
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The ToDwarfSourceLanguage function incorrectly excluded languages that
equal eLanguageTypeLastStandardLanguage. The comparison used `<` instead
of `<=`, causing the last standard language to fall through to the
default case and return std::nullopt.
This broke language plugins that use eLanguageTypeLastStandardLanguage
(currently Mojo at 0x0033) as their language code, preventing proper
DWARF language conversion and breaking REPL functionality.
The fix changes the comparison from `<` to `<=` to include the last
standard language in the automatic conversion to DWARF source language.
This is a regression from commit
7f51a2a47d2e706d04855b0e41690ebafa2b3238 which introduced the
ToDwarfSourceLanguage function.
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The intention for this API is to be used when presenting language names
to the user, e.g., in expression evaluation diagnostics or LLDB errors.
Most uses of `GetNameForLanguageType` can be probably replaced with
`GetDisplayNameForLanguageType`, but that's out of scope of this PR.
This uses `llvm::dwarf::LanguageDescription` under the hood, so we would
lose the version numbers in the names. If we deem those to be important,
we could switch to an implementation that hardcodes a list of
user-friendly names with version numbers included.
The intention is to use it from
https://github.com/llvm/llvm-project/pull/161688
Depends on https://github.com/llvm/llvm-project/pull/161804
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Currently we don't benefit from the user-friendly names that
`LanguageDescription` returns because we would always use
`Language::GetNameForLanguageType`. I'm not aware of a situation where
`GetDescription` should prefer the non-human readable form of the name
with. This patch removes the call to `GetNameForLanguageType`.
`LanguageDescription` already handles languages that it doesn't know
about. For those it would return `Unknown`. The LLDB language types
should all be available via DWARF. If there are languages that don't map
cleanly between `lldb::LanguageType` and `DW_LANG`, then we should add
explicit support for that in the `SourceLanguage::SourceLanguage`
constructor.
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LanguageType has two kinds of enumerators in it. The first is
DWARF-assigned enumerators which must be consecutive and match DW_LANG
values. The second is the vendor-assigned enumerators which must be
unique and must follow on from the DWARF-assigned values (i.e. the first
one is currently eLanguageTypeMojo + 1) even if that collides with
DWARF-assigned values that lldb is not yet aware of
Only the DWARF-assigned enumerators may be static_cast from DW_LANG
since their values match. The vendor-assigned enumerators must be
explicitly converted since their values do not match. This needs to
handle new languages added to DWARF and not yet implemented in lldb.
This fixes a crash when encountering a DW_LANG value >=
eNumLanguageTypes and wrong behaviour when encountering DW_LANG values
that have not yet been added to LanguageType but happen to coincide with
a vendor-assigned enumerator due to the consecutive values requirement
described above.
Another way to fix the crash is to add the language to LanguageType (and
fill any preceeding gaps in the number space) so that the DW_LANG being
encountered is correctly handled but this just moves the problem to a
new subset of DW_LANG values.
Also fix an unnecessary static-cast from LanguageType to LanguageType.
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reference (#135536)
Both the `CPlusPlusLanguage` plugins and the Swift language plugin
already assume the `sc != nullptr`. And all `FormatEntity` callsites of
`GetFunctionDisplayName` already check for nullptr before passing `sc`.
This patch makes this pre-condition explicit by changing the parameter
to `const SymbolContext &`. This will help with some upcoming changes in
this area.
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Support "true" and "false" (and "YES" and "NO" in Objective-C) in
ValueObject::SetValueFromCString.
Fixes #112597
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that separates out language and version. To avoid reinventing the wheel
and introducing subtle incompatibilities, this API uses the table of
languages and versiond defined by the upcoming DWARF 6 standard
(https://dwarfstd.org/languages-v6.html). While the DWARF 6 spec is not
finialized, the list of languages is broadly considered stable.
The primary motivation for this is to allow the Swift language plugin to
switch between language dialects between, e.g., Swift 5.9 and 6.0 with
out introducing a ton of new language codes. On the main branch this
change is considered NFC.
Depends on https://github.com/llvm/llvm-project/pull/89980
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Some languages may create artificial functions that have no real user
code, even though there is line table information for them. One such
case is with coroutine code that receives the CoroSplitter
transformation in LLVM IR. That code transformation creates many
different Functions, cloning one Instruction into many Instructions in
many different Functions and copying the associated debug locations.
It would be difficult to make that pass delete debug locations of cloned
instructions in a language agnostic way (is it even possible?), but LLDB
can ignore certain locations by querying its Language APIs and having it
decide based on, for example, mangling information.
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for types (#74786)
This patch revives the effort to get this Phabricator patch into
upstream:
https://reviews.llvm.org/D137900
This patch was accepted before in Phabricator but I found some
-gsimple-template-names issues that are fixed in this patch.
A fixed up version of the description from the original patch starts
now.
This patch started off trying to fix Module::FindFirstType() as it
sometimes didn't work. The issue was the SymbolFile plug-ins didn't do
any filtering of the matching types they produced, and they only looked
up types using the type basename. This means if you have two types with
the same basename, your type lookup can fail when only looking up a
single type. We would ask the Module::FindFirstType to lookup "Foo::Bar"
and it would ask the symbol file to find only 1 type matching the
basename "Bar", and then we would filter out any matches that didn't
match "Foo::Bar". So if the SymbolFile found "Foo::Bar" first, then it
would work, but if it found "Baz::Bar" first, it would return only that
type and it would be filtered out.
Discovering this issue lead me to think of the patch Alex Langford did a
few months ago that was done for finding functions, where he allowed
SymbolFile objects to make sure something fully matched before parsing
the debug information into an AST type and other LLDB types. So this
patch aimed to allow type lookups to also be much more efficient.
As LLDB has been developed over the years, we added more ways to to type
lookups. These functions have lots of arguments. This patch aims to make
one API that needs to be implemented that serves all previous lookups:
- Find a single type
- Find all types
- Find types in a namespace
This patch introduces a `TypeQuery` class that contains all of the state
needed to perform the lookup which is powerful enough to perform all of
the type searches that used to be in our API. It contain a vector of
CompilerContext objects that can fully or partially specify the lookup
that needs to take place.
If you just want to lookup all types with a matching basename,
regardless of the containing context, you can specify just a single
CompilerContext entry that has a name and a CompilerContextKind mask of
CompilerContextKind::AnyType.
Or you can fully specify the exact context to use when doing lookups
like: CompilerContextKind::Namespace "std"
CompilerContextKind::Class "foo"
CompilerContextKind::Typedef "size_type"
This change expands on the clang modules code that already used a
vector<CompilerContext> items, but it modifies it to work with
expression type lookups which have contexts, or user lookups where users
query for types. The clang modules type lookup is still an option that
can be enabled on the `TypeQuery` objects.
This mirrors the most recent addition of type lookups that took a
vector<CompilerContext> that allowed lookups to happen for the
expression parser in certain places.
Prior to this we had the following APIs in Module:
```
void
Module::FindTypes(ConstString type_name, bool exact_match, size_t max_matches,
llvm::DenseSet<lldb_private::SymbolFile *> &searched_symbol_files,
TypeList &types);
void
Module::FindTypes(llvm::ArrayRef<CompilerContext> pattern, LanguageSet languages,
llvm::DenseSet<lldb_private::SymbolFile *> &searched_symbol_files,
TypeMap &types);
void Module::FindTypesInNamespace(ConstString type_name,
const CompilerDeclContext &parent_decl_ctx,
size_t max_matches, TypeList &type_list);
```
The new Module API is much simpler. It gets rid of all three above
functions and replaces them with:
```
void FindTypes(const TypeQuery &query, TypeResults &results);
```
The `TypeQuery` class contains all of the needed settings:
- The vector<CompilerContext> that allow efficient lookups in the symbol
file classes since they can look at basename matches only realize fully
matching types. Before this any basename that matched was fully realized
only to be removed later by code outside of the SymbolFile layer which
could cause many types to be realized when they didn't need to.
- If the lookup is exact or not. If not exact, then the compiler context
must match the bottom most items that match the compiler context,
otherwise it must match exactly
- If the compiler context match is for clang modules or not. Clang
modules matches include a Module compiler context kind that allows types
to be matched only from certain modules and these matches are not needed
when d oing user type lookups.
- An optional list of languages to use to limit the search to only
certain languages
The `TypeResults` object contains all state required to do the lookup
and store the results:
- The max number of matches
- The set of SymbolFile objects that have already been searched
- The matching type list for any matches that are found
The benefits of this approach are:
- Simpler API, and only one API to implement in SymbolFile classes
- Replaces the FindTypesInNamespace that used a CompilerDeclContext as a
way to limit the search, but this only worked if the TypeSystem matched
the current symbol file's type system, so you couldn't use it to lookup
a type in another module
- Fixes a serious bug in our FindFirstType functions where if we were
searching for "foo::bar", and we found a "baz::bar" first, the basename
would match and we would only fetch 1 type using the basename, only to
drop it from the matching list and returning no results
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This doesn't change the current behavior of the function, but the explicit declaration looks cleaner.
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This issue has been seen in
- https://lab.llvm.org/buildbot/#/builders/17/builds/39525
- https://lab.llvm.org/buildbot/#/builders/68/builds/55140
The reason is that a new language tag has been added for Mojo, but other recent languages need to be added to the language array so that a name lookup array doesn't have gaps.
`ninja check-lldb-shell-process` now passes.
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The new language Mojo recently received a proper DWARF code, which can be seen in https://dwarfstd.org/languages.html, and this patch adds the basic definitions for using this language in DWARF.
Differential Revision: https://reviews.llvm.org/D153073
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- Remove unused parameter `valobj` (I checked downstream, not
even swift is using it).
- Return a std::pair<StringRef, StringRef> insted of having 2 out
parameter strings.
- Remove the use of ConstStrings.
This change was primarily mechanical except in
`ObjCLanguage::GetFormatterPrefixSuffix`. To keep this fast, we
construct an llvm::StringMap<std::pair<StringRef, StringRef>> so that we
can look things up quickly. There is some amount of cost to setting up
the map the first time it is called, but subsequent lookups should be
as fast as a hash + string comparison (the cost of looking up something
in an llvm::StringMap).
Differential Revision: https://reviews.llvm.org/D151603
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Modular just announced a new language called Mojo. This patch adds an entry in the language list in LLDB for minimal support (e.g. being able to create a TypeSystem for this language). We will later add debug info entries when the language matures.
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This patch allows users to evaluate expressions using
`expr -l c++20`. Currently DWARF keeps the CU's at
`DW_AT_language` at `DW_LANG_C_plus_plus_14` even
when compiling with `-std=c++20`. So even in "C++20
programs" expression evaluation will by default be
performed in `C++11` mode for now.
Enabling `C++14` has been previously attempted at
https://reviews.llvm.org/D80308
There are some remaining issues around evaluating C++20
expressions. Mainly, lack of support for C++20 AST nodes in
`clang::ASTImporter`. But these can be addressed in follow-up
patches.
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Adds more languages to the `language_names` list in
preparation for adding support for C++20 expression
evaluation.
The language constants were taken from the DWARFv5
constants defined in LLVM's `Dwarf.def`. Two vendor
constants overlap with the DWARFv5 constants so bump
their values. Their actual value is not important,
whereas keeping the enum values consecutive is (since
they are used for array lookups).
Differential Revision: https://reviews.llvm.org/D143061
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Renderscript is deprecated from Android, we no longer support LLDB for
Renderscript.
Differential Revision: https://reviews.llvm.org/D143983
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Before:
```
(lldb) expr --language abc -- 1 + 1
error: unknown language type: 'abc' for expression
```
After:
```
(lldb) expr --language abc -- 1 + 1
error: unknown language type: 'abc' for expression. List of supported languages:
c++
objective-c++
c++03
c++11
c++14
objc++
```
We choose to only list the languages which `expr` will actually
accept instead of all the language constants defined in `Language.cpp`
since that's what the user will most likely need.
Differential Revision: https://reviews.llvm.org/D142034
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This patch adds a new matching method for data formatters, in addition
to the existing exact typename and regex-based matching. The new method
allows users to specify the name of a Python callback function that
takes a `SBType` object and decides whether the type is a match or not.
Here is an overview of the changes performed:
- Add a new `eFormatterMatchCallback` matching type, and logic to handle
it in `TypeMatcher` and `SBTypeNameSpecifier`.
- Extend `FormattersMatchCandidate` instances with a pointer to the
current `ScriptInterpreter` and the `TypeImpl` corresponding to the
candidate type, so we can run registered callbacks and pass the type
to them. All matcher search functions now receive a
`FormattersMatchCandidate` instead of a type name.
- Add some glue code to ScriptInterpreterPython and the SWIG bindings to
allow calling a formatter matching callback. Most of this code is
modeled after the equivalent code for watchpoint callback functions.
- Add an API test for the new callback-based matching feature.
For more context, please check the RFC thread where this feature was
originally discussed:
https://discourse.llvm.org/t/rfc-python-callback-for-data-formatters-type-matching/64204/11
Differential Revision: https://reviews.llvm.org/D135648
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symbol name matches. Instead, we extract the incoming path's base
name, look up all the symbols with that base name, and then compare
the rest of the context that the user provided to make sure it
matches. However, we do this comparison using just a strstr. So for
instance:
break set -n foo::bar
will match not only "a::foo::bar" but "notherfoo::bar". The former is
pretty clearly the user's intent, but I don't think the latter is, and
results in breakpoints picking up too many matches.
This change adds a Language::DemangledNameContainsPath API which can
do a language aware match against the path provided. If the language
doesn't provide this we fall back to the strstr (though that's changed
to StringRef::contains in the patch).
Differential Revision: https://reviews.llvm.org/D124579
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It is easy to accidentally introduce a deadlock by having the callback
passed to Language::ForEach also attempt to acquire the same lock. It
is easy enough to disallow the callback from calling anything in
Language directly, but it may happen through a series of other
function/method calls.
The solution I am proposing is to tighten the lock in Language::ForEach
so that it is only held as we gather the currently loaded language
plugins. We store them in a vector and then iterate through them with
the callback so that the callback can't introduce a deadlock.
Differential Revision: https://reviews.llvm.org/D109013
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Replace default bodies of special member functions with = default;
$ run-clang-tidy.py -header-filter='lldb' -checks='-*,modernize-use-equals-default' -fix ,
https://clang.llvm.org/extra/clang-tidy/checks/modernize-use-equals-default.html
Differential revision: https://reviews.llvm.org/D104041
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The Mips in DW_LANG_Mips_Assembler is a vendor name not an
architecture name and in lack of a proper generic DW_LANG_assembler,
some assemblers emit DWARF using this tag. Due to a warning I recently
introduced users will now be greeted with
This version of LLDB has no plugin for the mipsassem language. Inspection of frame variables will be limited.
By renaming this to just "Assembler" this error message will make more sense.
Differential Revision: https://reviews.llvm.org/D101406
rdar://77214764
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Summary:
Languages can have different ways of formatting special characters.
E.g. when debugging C++ code a string might look like "\b", but when
debugging Swift code the same string would look like "\u{8}".
To make this work, plugins override GetStringPrinterEscapingHelper.
However, because there's a large amount of subtly divergent work done in
each override, we end up with large amounts of duplicated code. And all
the memory smashers fixed in one copy of the logic (see D73860) don't
get fixed in the others.
IMO the GetStringPrinterEscapingHelper is overly general and hard to
use. I propose deleting it and replacing it with an EscapeStyle enum,
which can be set as needed by each plugin.
A fix for some swift-lldb memory smashers falls out fairly naturally
from this deletion (https://github.com/apple/llvm-project/pull/1046). As
the swift logic becomes really tiny, I propose moving it upstream as
part of this change. I've added unit tests to cover it.
rdar://61419673
Reviewers: JDevlieghere, davide
Subscribers: mgorny, lldb-commits
Tags: #lldb
Differential Revision: https://reviews.llvm.org/D77843
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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
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This is a half-implemented feature that as far as we can tell was
never used by anything since its original inclusion in 2014. This
patch removes it to make remaining the code easier to understand.
Differential Revision: https://reviews.llvm.org/D71310
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This patch is also motivated by the Swift branch and is effectively NFC for the single-TypeSystem llvm.org branch.
In multi-language projects it is extremely common to have, e.g., a
Clang type and a similarly-named rendition of that same type in
another language. When searching for a type It is much cheaper to pass
a set of supported languages to the SymbolFile than having it
materialize every result and then rejecting the materialized types
that have the wrong language.
Differential Revision: https://reviews.llvm.org/D66546
<rdar://problem/54471165>
This reapplies r369690 with a previously missing constructor for LanguageSet.
llvm-svn: 369710
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This reverts r369690 (git commit aa3a564efa6b5fff2129f81a4041069a0233168f)
llvm-svn: 369702
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This patch is also motivated by the Swift branch and is effectively NFC for the single-TypeSystem llvm.org branch.
In multi-language projects it is extremely common to have, e.g., a
Clang type and a similarly-named rendition of that same type in
another language. When searching for a type It is much cheaper to pass
a set of supported languages to the SymbolFile than having it
materialize every result and then rejecting the materialized types
that have the wrong language.
Differential Revision: https://reviews.llvm.org/D66546
<rdar://problem/54471165>
llvm-svn: 369690
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Summary:
Currently there's not really a good way to iterate over the language runtimes a
process has. This is sometimes desirable (as seen in my change to Thread).
Additionally, there's not really a good reason to iterate over every available
language, but rather only over languages for which we have a plugin loaded.
Reviewers: JDevlieghere, davide, jingham
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D62562
llvm-svn: 361999
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This addresses post-commit review feedback for https://reviews.llvm.org/D62015.
llvm-svn: 360930
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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
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This commit removes redundant calls to smart pointer’s ::get() method.
https://clang.llvm.org/extra/clang-tidy/checks/readability-redundant-smartptr-get.html
llvm-svn: 353795
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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
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This parameter was only ever used with the Module set, and
since a SymbolFile is tied to a module, the parameter turns
out to be entirely unnecessary. Furthermore, it doesn't make
a lot of sense to ask a caller to ask SymbolFile which is tied
to Module X to find types for Module Y, but that possibility
was open with the previous interface. By removing this
parameter from the API, it makes it harder to use incorrectly
as well as easier for an implementor to understand what it
needs to do.
llvm-svn: 351133
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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
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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
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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
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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
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filtering mechanism to accept/reject results thusly obtained
Implement the C++ type lookup support in terms of this general scavenger
The idea is that we may want other languages to do debug info based search (exclusively, or as an add-on to runtime/module based searching) and it makes sense to avoid duplicating this functionality
llvm-svn: 285727
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Then deal with all the fallout.
Differential Revision: https://reviews.llvm.org/D24847
llvm-svn: 282265
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Where possible, remove the const char* version. To keep the
risk and impact here minimal, I've only done the simplest
functions.
In the process, I found a few opportunities for adding some
unit tests, so I added those as well.
Tested on Windows, Linux, and OSX.
llvm-svn: 281799
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*** to conform to clang-format’s LLVM style. This kind of mass change has
*** two obvious implications:
Firstly, merging this particular commit into a downstream fork may be a huge
effort. Alternatively, it may be worth merging all changes up to this commit,
performing the same reformatting operation locally, and then discarding the
merge for this particular commit. The commands used to accomplish this
reformatting were as follows (with current working directory as the root of
the repository):
find . \( -iname "*.c" -or -iname "*.cpp" -or -iname "*.h" -or -iname "*.mm" \) -exec clang-format -i {} +
find . -iname "*.py" -exec autopep8 --in-place --aggressive --aggressive {} + ;
The version of clang-format used was 3.9.0, and autopep8 was 1.2.4.
Secondly, “blame” style tools will generally point to this commit instead of
a meaningful prior commit. There are alternatives available that will attempt
to look through this change and find the appropriate prior commit. YMMV.
llvm-svn: 280751
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llvm-svn: 270024
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This is a pretty straightforward first pass over removing a number of uses of
Mutex in favor of std::mutex or std::recursive_mutex. The problem is that there
are interfaces which take Mutex::Locker & to lock internal locks. This patch
cleans up most of the easy cases. The only non-trivial change is in
CommandObjectTarget.cpp where a Mutex::Locker was split into two.
llvm-svn: 269877
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'type lookup'
llvm-svn: 264356
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llvm-svn: 260715
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