Closes#107985.
LanguageExtensions.rst states that `__builtin_shufflevector` and
`__builtin_convertvector` can be evaluated as constants, but this is not
reflected in Butiltins.td. This patch aligns these two.
`__has_builtin` was relying on reversible identifiers and string
matching to recognize builtin-type traits, leading to some newer type
traits not being recognized.
Fixes#111477
Add '__builtin_FILE_NAME()', which expands to the filename because the
full path is not always needed. It corresponds to the '__FILE_NAME__'
predefined macro and is consistent with the other '__builin' functions
added for predefined macros.
Differential Revision: https://reviews.llvm.org/D144878
The `__has_constexpr_builtin` macro can be used to check
whether the builtin in constant-evaluated by Clang frontend.
Reviewed By: aaron.ballman, shafik
Differential Revision: https://reviews.llvm.org/D136036
Summary:
Previously __has_builtin(__builtin_*) would return false for
__builtin_*s that we modeled as keywords rather than as functions
(because they take type arguments). With this patch, all builtins
that are called with function-call-like syntax return true from
__has_builtin (covering __builtin_* and also the __is_* and __has_* type
traits and the handful of similar builtins without such a prefix).
Update the documentation on __has_builtin and on type traits to match.
While doing this I noticed the type trait documentation was out of date
and incomplete; that's fixed here too.
Reviewers: aaron.ballman
Subscribers: jfb, kristina, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D66100
llvm-svn: 368785
