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llvm-svn: 369632
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Summary:
We currently have a bunch of code that is supposed to handle invalid command options, but
all this code is unreachable because invalid options are already handled in `Options::Parse`.
The only way we can reach this code is when we declare but then not implement an option
(which will be made impossible with D65386, which is also when we can completely remove
the `default` cases).
This patch replaces all this code with `llvm_unreachable` to make clear this is dead code
that can't be reached.
Reviewers: JDevlieghere
Reviewed By: JDevlieghere
Subscribers: lldb-commits
Tags: #lldb
Differential Revision: https://reviews.llvm.org/D66522
llvm-svn: 369625
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remove any undocumented/redundant return values
Summary:
We still have some leftovers of the old completion API in the internals of
LLDB that haven't been replaced by the new CompletionRequest. These leftovers
are:
* The return values (int/size_t) in all completion functions.
* Our result array that starts indexing at 1.
* `WordComplete` mode.
I didn't replace them back then because it's tricky to figure out what exactly they
are used for and the completion code is relatively untested. I finally got around
to writing more tests for the API and understanding the semantics, so I think it's
a good time to get rid of them.
A few words why those things should be removed/replaced:
* The return values are really cryptic, partly redundant and rarely documented.
They are also completely ignored by Xcode, so whatever information they contain will end up
breaking Xcode's completion mechanism. They are also partly impossible to even implement
as we assign negative values special meaning and our completion API sometimes returns size_t.
Completion functions are supposed to return -2 to rewrite the current line. We seem to use this
in some untested code path to expand the history repeat character to the full command, but
I haven't figured out why that doesn't work at the moment.
Completion functions return -1 to 'insert the completion character', but that isn't implemented
(even though we seem to activate this feature in LLDB sometimes).
All positive values have to match the number of results. This is obviously just redundant information
as the user can just look at the result list to get that information (which is what Xcode does).
* The result array that starts indexing at 1 is obviously unexpected. The first element of the array is
reserved for the common prefix of all completions (e.g. "foobar" and "footar" -> "foo"). The idea is
that we calculate this to make the life of the API caller easier, but obviously forcing people to have
1-based indices is not helpful (or even worse, forces them to manually copy the results to make it
0-based like Xcode has to do).
* The `WordComplete` mode indicates that LLDB should enter a space behind the completion. The
idea is that we let the top-level API know that we just provided a full completion. Interestingly we
`WordComplete` is just a single bool that somehow represents all N completions. And we always
provide full completions in LLDB, so in theory it should always be true.
The only use it currently serves is providing redundant information about whether we have a single
definitive completion or not (which we already know from the number of results we get).
This patch essentially removes `WordComplete` mode and makes the result array indexed from 0.
It also removes all return values from all internal completion functions. The only non-redundant information
they contain is about rewriting the current line (which is broken), so that functionality was moved
to the CompletionRequest API. So you can now do `addCompletion("blub", "description", CompletionMode::RewriteLine)`
to do the same.
For the SB API we emulate the old behaviour by making the array indexed from 1 again with the common
prefix at index 0. I didn't keep the special negative return codes as we either never sent them before (e.g. -2) or we
didn't even implement them in the Editline handler (e.g. -1).
I tried to keep this patch minimal and I'm aware we can probably now even further simplify a bunch of related code,
but I would prefer doing this in follow-up NFC commits
Reviewers: JDevlieghere
Reviewed By: JDevlieghere
Subscribers: arphaman, abidh, lldb-commits
Tags: #lldb
Differential Revision: https://reviews.llvm.org/D66536
llvm-svn: 369624
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I find as a good cleanup to drop the Compile method. As I do not find TIMTOWTDI
as an advantage and there is already constructor parameter to compile the
regex.
Differential Revision: https://reviews.llvm.org/D66392
llvm-svn: 369352
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Originally I wanted to remove the RegularExpression class in Utility and
replace it with llvm::Regex. However, during that transition I noticed
that there are several places where need the regular expression string.
So instead I propose to keep the RegularExpression class and make it a
thin wrapper around llvm::Regex.
This patch also removes the workaround for empty regular expressions.
The result is that we are now (more or less) POSIX conformant.
Differential revision: https://reviews.llvm.org/D66174
llvm-svn: 369153
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This patch moves the remaining completion functions from the
old completion API (that used several variables) to just
passing a single CompletionRequest.
This is for the most part a simple change as we just replace
the old arguments with a single CompletionRequest argument.
There are a few places where I had to create new CompletionRequests
in the called functions as CompletionRequests itself are immutable
and don't expose their internal match list anymore. This means that
if a function wanted to change the CompletionRequest or directly
access the result list, we need to work around this by creating
a new CompletionRequest and a temporary match/description list.
Preparation work for rdar://53769355
llvm-svn: 369000
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Reformat OptionEnumValueElement to make it easier to distinguish between
its fields. This also removes the need to disable clang-format for these
arrays.
Differential revision: https://reviews.llvm.org/D65489
llvm-svn: 367638
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Replaying a reproducer in asynchronous mode never makes sense. This
patch disables asynchronous mode during replay.
Differential revision: https://reviews.llvm.org/D65547
llvm-svn: 367494
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Summary:
We've had a bug where two pieces of code, executing on two threads were
attempting to write inferior output simultaneously. The first one was in
Debugger::HandleProcessEvent, which handled the cases where stdout was
coming while the process was running. The second was in
CommandInterpreter::IOHandlerInputComplete, which was ensuring that any
output is printed before the command which caused process to run
terminates.
Both of these things make sense, but the fact they were implemented as
two independent functions without any synchronization meant that race
conditions could occur (e.g. both threads call process->GetSTDOUT, get
two chunks of data, but then end up calling stream->Write in opposite
order). This was most apparent in situations where a process quickly
writes a bunch of output and then exits (as all our register tests do).
This patch adds a mutex to ensure that stdout forwarding happens
atomically. It also refactors a code somewhat in order to reduce code
duplication.
Reviewers: clayborg, jingham
Subscribers: jfb, mgorny, lldb-commits
Differential Revision: https://reviews.llvm.org/D65152
llvm-svn: 367418
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Completion requests have two fields that are essentially unimplemented:
`m_match_start_point` and `m_max_return_elements`. This would've been
okay, if it wasn't for the fact that this caused a bunch of useless
parameters to be passed around. Occasionally there would be a comment or
assert saying that they are not supported. This patch removes them.
llvm-svn: 367385
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When investigating a completion bug I got confused by the API.
LongestCommonPrefix finds the longest common prefix of the strings in
the string list. Instead of returning that string through an output
argument, just return it by value.
llvm-svn: 367384
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Summary:
This is a bit more explicit, and makes it possible to build LLDB without
varying the -I lines per-directory.
(The latter is useful because many build systems only allow this to be
configured per-library, and LLDB is insufficiently layered to be split into
multiple libraries on stricter build systems).
(My comment on D65185 has some more context)
Reviewers: JDevlieghere, labath, chandlerc, jdoerfert
Reviewed By: labath
Subscribers: mgorny, lldb-commits
Tags: #lldb
Differential Revision: https://reviews.llvm.org/D65397
Patch by Sam McCall!
llvm-svn: 367241
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Right now our Properties.inc only generates the initializer for the
options list but not the array declaration boilerplate around it. As the
array definition is identical for all arrays, we might as well also let
the Properties.inc generate it alongside the initializers.
Unfortunately we cannot do the same for enums, as there's this magic
ePropertyExperimental, which needs to come at the end to be interpreted
correctly. Hopefully we can get rid of this in the future and do the
same for the property enums.
Differential revision: https://reviews.llvm.org/D65353
llvm-svn: 367238
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With the plugins having their own tablgen file, it makes sense to split
off the interpreter properties as well.
llvm-svn: 367138
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lldbInterpreter depends on LLDBPropertiesGen and LLDBPropertiesEnumGen.
llvm-svn: 367073
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Property definitions are currently defined in a PropertyDefinition array
and have a corresponding enum to index in this array. Unfortunately this
is quite error prone. Indeed, just today we found an incorrect merge
where a discrepancy between the order of the enum values and their
definition caused the test suite to fail spectacularly.
Tablegen can streamline the process of generating the property
definition table while at the same time guaranteeing that the enums stay
in sync. That's exactly what this patch does. It adds a new tablegen
file for the properties, building on top of the infrastructure that
Raphael added recently for the command options. It also introduces two
new tablegen backends: one for the property definitions and one for
their corresponding enums.
It might be worth mentioning that I generated most of the tablegen
definitions from the existing property definitions, by adding a dump
method to the struct. This seems both more efficient and less error
prone that copying everything over by hand. Only Enum properties needed
manual fixup for the EnumValues and DefaultEnumValue fields.
Differential revision: https://reviews.llvm.org/D65185
llvm-svn: 367058
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This patch replaces explicit calls to log::Printf with the new LLDB_LOGF
macro. The macro is similar to LLDB_LOG but supports printf-style format
strings, instead of formatv-style format strings.
So instead of writing:
if (log)
log->Printf("%s\n", str);
You'd write:
LLDB_LOG(log, "%s\n", str);
This change was done mechanically with the command below. I replaced the
spurious if-checks with vim, since I know how to do multi-line
replacements with it.
find . -type f -name '*.cpp' -exec \
sed -i '' -E 's/log->Printf\(/LLDB_LOGF\(log, /g' "{}" +
Differential revision: https://reviews.llvm.org/D65128
llvm-svn: 366936
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Summary:
While investigating breakages caused by D63110, I noticed we were
building the short options strings in three places. Some of them used a
leading ':' to detect missing arguments, and some didn't. This was the
indirect cause of D63110. Here, I move the common code into a utility
function.
Also, unify the code which appends the sentinel value at the end of the
option vector, and make it harder for users to pass invalid argc-argv
combos to getopt (another component of D63110) by having the
OptionParser::Parse function take a (Mutable)ArrayRef.
This unification has uncovered that we don't handle missing arguments
while building aliases, However, it's not possible to write an effective
test for this, as right now it is not possible to return an error out of
the alias parsing code (which means we are printing the generic
"failure" message even after this patch).
Reviewers: mgorny, aprantl
Reviewed By: mgorny
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D63770
llvm-svn: 365665
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llvm-svn: 364361
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Make sure the prompt has been flushed before reading commands. Buffering
is different in Python 3, which led to the prompt not being displayed in
the Xcode console.
llvm-svn: 364335
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Relying on the value of optind for detecting missing arguments is
unreliable because its value after a failed parse is an implementation
detail. A more correct way to achieve this is to pass ':' at the
beginning of option string, which tells getopt to return ':' for missing
arguments.
For this to work, I also had to add a nullptr at the end of the argv
vector, as some getopt implementations did not work without that. This
is also an implementation detail, as getopt should normally be called
with argc+argc "as to main function" (i.e. null-terminated).
Thanks to Michał Górny for testing this patch out on NetBSD.
llvm-svn: 364317
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with an additional read-out-of-bounds bugfix applied.
Differential Revision: https://reviews.llvm.org/D63110
llvm-svn: 364260
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This fails on the bots around 1/10 of the time.
llvm-svn: 363999
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The call to getopt_long didn't handle the case where the *last* option
had an argument missing.
<rdar://problem/51231882>
Differential Revision: https://reviews.llvm.org/D63110
llvm-svn: 363101
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This change replaces built-in types that are implicitly converted to
booleans.
Differential revision: https://reviews.llvm.org/D62284
llvm-svn: 361580
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Summary:
NFC = [[ https://llvm.org/docs/Lexicon.html#nfc | Non functional change ]]
This commit is the result of modernizing the LLDB codebase by using
`nullptr` instread of `0` or `NULL`. See
https://clang.llvm.org/extra/clang-tidy/checks/modernize-use-nullptr.html
for more information.
This is the command I ran and I to fix and format the code base:
```
run-clang-tidy.py \
-header-filter='.*' \
-checks='-*,modernize-use-nullptr' \
-fix ~/dev/llvm-project/lldb/.* \
-format \
-style LLVM \
-p ~/llvm-builds/debug-ninja-gcc
```
NOTE: There were also changes to `llvm/utils/unittest` but I did not
include them because I felt that maybe this library shall be updated in
isolation somehow.
NOTE: I know this is a rather large commit but it is a nobrainer in most
parts.
Reviewers: martong, espindola, shafik, #lldb, JDevlieghere
Reviewed By: JDevlieghere
Subscribers: arsenm, jvesely, nhaehnle, hiraditya, JDevlieghere, teemperor, rnkovacs, emaste, kubamracek, nemanjai, ki.stfu, javed.absar, arichardson, kbarton, jrtc27, MaskRay, atanasyan, dexonsmith, arphaman, jfb, jsji, jdoerfert, lldb-commits, llvm-commits
Tags: #lldb, #llvm
Differential Revision: https://reviews.llvm.org/D61847
llvm-svn: 361484
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The patch in r359029 missed a few accessors and mutators. This patch
also changes the lock to a recursive one as OptionValueFileSpecList::Clear()
can be invoked from some of the other methods.
llvm-svn: 361440
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I was looking at the current implementation of SourceInitFile and there
were a few things that made this function hard to read:
* The code to find the ~/.lldbinit file is duplicated across the cwd
and non-cwd branch.
* The ./.lldbinit is once computed by resolving .lldbinit and once by
resolving ./.lldbinit.
* It wasn't clear to me what happened when you're sourcing the
.lldbinit file in the current working directory. Apparently we do
nothing when we property to control that is set to warn (makes sense)
and we don't care when the property is set to true (debatable).
* There were at least two branches where the status of the
CommandReturnObject were not set.
This patch attempts to simplify that code.
Differential revision: https://reviews.llvm.org/D61994
llvm-svn: 361080
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The change that was committed for this used \\s to match spaces which does not work correctly on all platforms. Using [:space:] makes the test pass on both Linux and Windows
llvm-svn: 361064
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Previously "bt all " would've failed as the regex didn't match
them.
Over the shoulder review by Jonas Devlieghere.
<rdar://problem/50824935>
llvm-svn: 360966
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Replaces assert() with static_assert() if the condition is can be
evaluated at compile time.
llvm-svn: 360753
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This patch ensures that we propagate errors coming from the lldbinit
file trough the command/script interpreter. Before, if you did something
like command script import syntax_error.py, and the python file
contained a syntax error, lldb wouldn't tell you about it. This changes
with the current patch: errors are now propagated by default.
PS: Jim authored this change and I added testing.
Differential revision: https://reviews.llvm.org/D61579
llvm-svn: 360216
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Currently we have special handling for local lldbinit files in the
driver. At the same time, we have an SB API named
`SourceInitFileInCurrentWorkingDirectory` that does the same thing.
This patch removes the special handling from the driver and uses the API
instead. In addition to the obvious advantages of having one canonical
way of doing things and removing code duplication, this change also
means that the code path is the same for global and local lldb init
files.
Differential revision: https://reviews.llvm.org/D61577
llvm-svn: 360077
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This patch makes `re` an alias for `register`. Currently `re<TAB>` gives
you the choice between `register` and `reproducer`. Given that you use
`register` a lot more often, it should win for the common substring.
Differential revision: https://reviews.llvm.org/D61469
llvm-svn: 359927
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You can only find out about this useful customization by browsing
the settings list output or the llvm.org web pages. Mention it
in the help for thread list, thread backtrace & _regex_bt commands
to make it more discoverable.
llvm-svn: 359752
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This is part two of the change started in r359330. This patch moves the
ownership of the script interpreter from the command interpreter into
the debugger. I would've preferred to remove the lazy initialization,
however the fact that the scripting language is set after the debugger
is created makes that tricky. So for now this does exactly the same
thing as when it was under the command interpreter. The result is that
this patch is fully NFC.
Differential revision: https://reviews.llvm.org/D61211
llvm-svn: 359354
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The script language argument was passed from the debugger to the command
interpreter, only to call SetScriptLanguage on the debugger again. It
wasn't even used to initialize the script interpreter, because that
would query the debugger again. This patch removes the needless back and
forth.
llvm-svn: 359346
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As discussed in D61090, there's no good reason for the script
interpreter to depend on the command interpreter. When looking at the
code, it becomes clear that we mostly use the command interpreter as a
way to access the debugger. Hence, it makes more sense to just pass that
to the script interpreter directly.
This is part 1 out of 2. I have another patch in the pipeline that
changes the ownership of the script interpreter to the debugger as well,
but I didn't get around to finish that today.
Differential revision: https://reviews.llvm.org/D61172
llvm-svn: 359330
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Before a Debugger gets a Target, target settings are routed to a global set
of settings. Even without this, some part of the LLDB which exist independently
of the Debugger object (the Module cache, the Symbol vendors, ...) access
directly the global default store for those settings.
Of course, if you modify one of those global settings while they are being read,
bad things happen. We see this quite a bit with FileSpecList settings. In
particular, we see many cases where one debug session changes
target.exec-search-paths while another session starts up and it crashes when
one of those accesses invalid FileSpecs.
This patch addresses the specific FileSpecList issue by adding locking to
OptionValueFileSpecList and never returning by reference.
Reviewers: clayborg
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D60468
llvm-svn: 359028
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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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For a single char argument, find_first_of is equal to find and
find_last_of is equal to rfind. While playing around with the plugin
stuff this caused an export failure because it always got inlined except
once, which resulted in an undefined symbol.
llvm-svn: 357198
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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
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llvm-svn: 355466
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This patch adds the necessary logic to capture and replay commands
entered into the command interpreter. A DataRecorder shadows the input
and writes its data to a know file. During replay this file is used as
the command interpreter's input.
It's possible to the command interpreter more than once, with a
different input source. We support this scenario by using multiple
buffers. The synchronization for this takes place at the SB layer, where
we create a new recorder every time the debugger input is changed.
During replay we use the corresponding buffer as input.
Differential revision: https://reviews.llvm.org/D58564
llvm-svn: 355249
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Moved `if (error.Fail())` to correct place to catch all faulty cases such as
"unknown or ambiguous option" which was ignored before.
llvm-svn: 354883
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The `ap` suffix is a remnant of lldb's former use of auto pointers,
before they got deprecated. Although all their uses were replaced by
unique pointers, some variables still carried the suffix.
In r353795 I removed another auto_ptr remnant, namely redundant calls to
::get for unique_pointers. Jim justly noted that this is a good
opportunity to clean up the variable names as well.
I went over all the changes to ensure my find-and-replace didn't have
any undesired side-effects. I hope I didn't miss any, but if you end up
at this commit doing a git blame on a weirdly named variable, please
know that the change was unintentional.
llvm-svn: 353912
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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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Unlike std::make_unique, which is only available since C++14,
std::make_shared is available since C++11. Not only is std::make_shared
a lot more readable compared to ::reset(new), it also performs a single
heap allocation for the object and control block.
Differential revision: https://reviews.llvm.org/D57990
llvm-svn: 353764
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We save two levels of indentation by returning early if the given file
doesn't exists or cannot be opened.
llvm-svn: 353472
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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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