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Summary:
As discussed on lldb-dev, this patch moves some LLDB tests into a hierarchy that more closely
resembles the commands we use in the LLDB interpreter. This patch should only move tests
that use the command interpreter and shouldn't touch any tests that primarily test the SB API.
Reviewers: #lldb, jfb, JDevlieghere
Reviewed By: #lldb, JDevlieghere
Subscribers: dexonsmith, arphaman, JDevlieghere, lldb-commits
Tags: #lldb
Differential Revision: https://reviews.llvm.org/D67033
llvm-svn: 370605
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These tests currently pass, but they rely on fix-its in our expression
parser to pass because they have some typos.
llvm-svn: 367309
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Two tests having the same name creates a race condition when moving the
trace files.
llvm-svn: 361310
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Two tests cannot share the same name, because they will generate an
identical trace file. When that happens, this can lead to a race
condition where dotest fails when trying to move both files into the
trace directory, because the file has already been moved. Additionally,
the trace will have been overwritten by the test that finishes last.
llvm-svn: 359807
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Reviewers: aprantl, shafik
Reviewed By: aprantl, shafik
Subscribers: lldb-commits
Tags: #c_modules_in_lldb, #lldb
Differential Revision: https://reviews.llvm.org/D61305
llvm-svn: 359779
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Summary:
This patch is a follow-up for D58125. It implements the manual instantiation and merging of 'std' templates like
`std::vector` and `std::shared_ptr` with information from the debug info AST. This (finally) allows using these classes
in the expression evaluator like every other class (i.e. things like `vec.size()` and shared_ptr debugging now works, yay!).
The main logic is the `CxxModuleHandler` which intercept the ASTImporter import process and replaces any `std` decls
by decls from the C++ module. The decls from the C++ module are "imported" by just deserializing them directly in
the expression evaluation context. This is mostly because we don't want to rely on the ASTImporter to correctly import
these declarations, but in the future we should also move to the ASTImporter for that.
This patch doesn't contain the automatic desugaring for result variables. This means that if you call for example
`size` of `std::vector` you maybe get some very verbose typedef'd type as the variable type, e.g.
`std::vector<int, std::allocator<int>>::value_type`.
This is not only unreadable, it also means that our ASTImporter has to import all these types and associated
decls into the persisent variable context. This currently usually leads to some assertion getting triggered
in Clang when the ASTImporter either makes a mistake during importing or our debug info AST is inconsitent.
The current workaround I use in the tests is to just cast the result to it's actual type (e.g. `size_t` or `int`) to prevent
the ASTImporter from having to handle all these complicated decls.
The automatic desugaring will be a future patch because I'm not happy yet with the current code for that and because
I anticipate that this will be a controversial patch.
Reviewers: aprantl, shafik, jingham, martong, serge-sans-paille
Reviewed By: martong
Subscribers: balazske, rnkovacs, mgorny, mgrang, abidh, jdoerfert, lldb-commits
Tags: #c_modules_in_lldb, #lldb
Differential Revision: https://reviews.llvm.org/D59537
llvm-svn: 359538
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They cause failures on some systems due to an unrelated bug (pr35043).
This works around that.
llvm-svn: 357080
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Summary:
This patch is the MVP version of importing the std module into the expression parser to improve C++ debugging.
What happens in this patch is that we inject a `@import std` into our expression source code. We also
modify our internal Clang instance for parsing this expression to work with modules and debug info
at the same time (which is the main change in terms of LOC). We implicitly build the `std` module on the first use. The
C++ include paths for building are extracted from the debug info, which means that this currently only
works if the program is compiled with `-glldb -fmodules` and uses the std module. The C include paths
are currently specified by LLDB.
I enabled the tests currently only for libc++ and Linux because I could test this locally. I'll enable the tests
for other platforms once this has landed and doesn't break any bots (and I implemented the platform-specific
C include paths for them).
With this patch we can now:
* Build a libc++ as a module and import it into the expression parser.
* Read from the module while also referencing declarations from the debug info. E.g. `std::abs(local_variable)`.
What doesn't work (yet):
* Merging debug info and C++ module declarations. E.g. `std::vector<CustomClass>` doesn't work.
* Pretty much anything that involves the ASTImporter and templated code. As the ASTImporter is used for saving the result declaration, this means that we can't
call yet any function that returns a non-trivial type.
* Use libstdc++ for this, as it requires multiple include paths and Clang only emits one include path per module. Also libstdc++ doesn't support Clang modules without patches.
Reviewers: aprantl, jingham, shafik, friss, davide, serge-sans-paille
Reviewed By: aprantl
Subscribers: labath, mgorny, abidh, jdoerfert, lldb-commits
Tags: #c_modules_in_lldb, #lldb
Differential Revision: https://reviews.llvm.org/D58125
llvm-svn: 355939
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