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https://github.com/llvm/llvm-project/pull/144913 was reverted because
some of the Darwin tests were failing on SDKs prior to `15.0`.
Only the x86 bots run on macOS `14.0`. The aarch64 ones run on macOS
`15.0`.
In this patch, we deactivate the failing Darwin tests on older SDKs
(prior to `15.0`).
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This is an ongoing series of commits that are reformatting our Python
code. Reformatting is done with `black` (23.1.0).
If you end up having problems merging this commit because you have made
changes to a python file, the best way to handle that is to run `git
checkout --ours <yourfile>` and then reformat it with black.
RFC: https://discourse.llvm.org/t/rfc-document-and-standardize-python-code-style
Differential revision: https://reviews.llvm.org/D151460
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**Summary**
The compiler version check wouldn't make sense for non-GCC
compilers, so check for the compiler too.
Differential Revision: https://reviews.llvm.org/D143656
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Fixes API tests for older compilers.
Since https://reviews.llvm.org/D141828 defaulted
arguments will be omitted, but older Clang's won't.
Differential Revision: https://reviews.llvm.org/D143022
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**Summary**
This patch makes LLDB understand the `DW_AT_default_value` on
template argument DIEs. As a result, type summaries will no
longer contain the defaulted template arguments, reducing
noise substantially. E.g.,
Before:
```
(lldb) v nested
(std::vector<std::vector<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >, std::allocator<std::vector<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator <char> > > > > >) nested = size=0 {}
```
After:
```
(lldb) v nested
(std::vector<std::vector<std::basic_string<char> > >) nested = size=0 {}
```
See discussion in https://reviews.llvm.org/D140423
**Testing**
* Adjust API tests
* Added unit-test
Differential Revision: https://reviews.llvm.org/D141828
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Eliminate boilerplate of having each test manually assign to `mydir` by calling
`compute_mydir` in lldbtest.py.
Differential Revision: https://reviews.llvm.org/D128077
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mode
The `fallback` setting for import-std-module is supposed to allow running
expression that require an imported C++ module without causing any regressions
for users (neither in terms of functionality nor performance). This is done by
first trying to normally parse/evaluate an expression and when an error occurred
during this first attempt, we retry with the loaded 'std' module.
When we run into a system with a 'std' module that for some reason doesn't build
or otherwise causes parse errors, then this currently means that the second
parse attempt will overwrite the error diagnostics of the first parse attempt.
Given that the module build errors are outside of the scope of what the user can
influence, it makes more sense to show the errors from the first parse attempt
that are only concerned with the actual user input.
Reviewed By: aprantl
Differential Revision: https://reviews.llvm.org/D110696
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imported std C++ module
By now LLDB can import the 'std' C++ module to improve expression evaluation,
but there are still a few problems to solve before we can do this by default.
One is that importing the C++ module is slightly slower than normal expression
evaluation (mostly because the disk access and loading the initial lookup data
is quite slow in comparison to the barebone Clang setup the rest of the LLDB
expression evaluator is usually doing). Another problem is that some complicated
types in the standard library aren't fully supported yet by the ASTImporter, so
we end up types that fail to import (which usually appears to the user as if the
type is empty or there is just no result variable).
To still allow people to adopt this mode in their daily debugging, this patch
adds a setting that allows LLDB to automatically retry failed expression with a
loaded C++ module. All success expressions will behave exactly as they would do
before this patch. Failed expressions get a another parse attempt if we find a
usable C++ module in the current execution context. This way we shouldn't have
any performance/parsing regressions in normal debugging workflows, while the
debugging workflows involving STL containers benefit from the C++ module type
info.
This setting is off by default for now with the intention to enable it by
default on macOS soon-ish.
The implementation is mostly just extracting the existing parse logic into its
own function and then calling the parse function again if the first evaluation
failed and we have a C++ module to retry the parsing with.
Reviewed By: shafik, JDevlieghere, aprantl
Differential Revision: https://reviews.llvm.org/D92784
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