[clang][CodeGen] Use FieldDecl::getFieldIndex() in VisitOffsetOfExpr (#187826)
Use FieldDecl::getFieldIndex() instead of manually iterating over
fields.
[orc-rt] Add Session::tryCreateService convenience function. (#187640)
Session::tryCreateService will try to create an instance of ServiceT by
forwarding the given arguments to the ServiceT::Create method, which
must return an Expected<std::unique_ptr<ServiceT>>.
This enables one-line construction and registration of Services with
fallible constructors (which are expected to be common).
[Clang] Use stable_sort in VerifyDiagnosticsConsumer. (#187827)
The new code introduced for `-verify-directives` in PR #179835 enforces
that the order of diagnostics matches the order of the directives.
However, before checking this, it sorts the directives by
SourceLocation. Perhaps non-obviously, all directives which appear
inside a single comment are given the same SourceLocation, pointing to
the beginning of the comment. While these are added in order they appear
in the comment, the non-stable std::sort may non-detministically
misorder them. Switching to stable_sort ensures the correct order is
verified.
This was observed as a random test failure on the checks in
clang/test/CXX/drs/cwg25xx.cpp lines 250 and 264, in some builds of
Clang. Note that those lines end in backslashes, and thus, despite
appearances, the directives on the following lines are also within the
same single comment.
[clang-format] Merge case alignment into AlignTokens (#187811)
Use (nearly) the same code to align case statements and expression, as
the other alignments do. That way we also fix two things:
- Keep the ColumnLimit intact, without duplicating the calculation.
- Align all the case colons, even for empty cases.
[libc][math] Qualify log with constant evaluation support (#184745)
Lay the ground for C++26 `constexpr` math functions:
- Introduce `LIBC_ENABLE_CONSTEXPR` macro switch to specify the desire
of `constexpr`-only code route.
- Introduce `LIBC_HAS_CONSTANT_EVALUATION` to indicate that we are using
`constexpr`-only code in all dependent functions.
- Introduce `LIBC_CONSTEXPR` macro qualifier to aid in altering the
signature of non-`constexpr` functions.
Note that non-`constexpr` qualified functions are caused by the
exploitation of non-`constexpr` compatible utils, resulting in
non-qualified dependent function, but it can be modified to be qualified
using other code routes.
If the function is `constexpr` compatible, then it's prohibited to use
`LIBC_CONSTEXPR` as a function qualifier. We only qualify it with
`constexpr` as usual.
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