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[libc] Add is_constant_evaluated type_traits #86139

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Merged
merged 1 commit into from
Mar 21, 2024
Merged

[libc] Add is_constant_evaluated type_traits #86139

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5 changes: 3 additions & 2 deletions libc/src/__support/CPP/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -103,23 +103,24 @@ add_header_library(
type_traits
HDRS
type_traits.h
type_traits/always_false.h
type_traits/add_lvalue_reference.h
type_traits/add_pointer.h
type_traits/add_rvalue_reference.h
type_traits/always_false.h
type_traits/bool_constant.h
type_traits/conditional.h
type_traits/decay.h
type_traits/enable_if.h
type_traits/false_type.h
type_traits/integral_constant.h
type_traits/invoke.h
type_traits/invoke_result.h
type_traits/invoke.h
type_traits/is_arithmetic.h
type_traits/is_array.h
type_traits/is_base_of.h
type_traits/is_class.h
type_traits/is_const.h
type_traits/is_constant_evaluated.h
type_traits/is_convertible.h
type_traits/is_destructible.h
type_traits/is_enum.h
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1 change: 1 addition & 0 deletions libc/src/__support/CPP/type_traits.h
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Expand Up @@ -25,6 +25,7 @@
#include "src/__support/CPP/type_traits/is_base_of.h"
#include "src/__support/CPP/type_traits/is_class.h"
#include "src/__support/CPP/type_traits/is_const.h"
#include "src/__support/CPP/type_traits/is_constant_evaluated.h"
#include "src/__support/CPP/type_traits/is_convertible.h"
#include "src/__support/CPP/type_traits/is_destructible.h"
#include "src/__support/CPP/type_traits/is_enum.h"
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21 changes: 21 additions & 0 deletions libc/src/__support/CPP/type_traits/is_constant_evaluated.h
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@@ -0,0 +1,21 @@
//===-- is_constant_evaluated type_traits -----------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIBC_SRC___SUPPORT_CPP_TYPE_TRAITS_IS_CONSTANT_EVALUATED_H
#define LLVM_LIBC_SRC___SUPPORT_CPP_TYPE_TRAITS_IS_CONSTANT_EVALUATED_H

#include "src/__support/macros/attributes.h"

namespace LIBC_NAMESPACE::cpp {

LIBC_INLINE constexpr bool is_constant_evaluated() {
return __builtin_is_constant_evaluated();
}

} // namespace LIBC_NAMESPACE::cpp

#endif // LLVM_LIBC_SRC___SUPPORT_CPP_TYPE_TRAITS_IS_CONSTANT_EVALUATED_H
3 changes: 2 additions & 1 deletion utils/bazel/llvm-project-overlay/libc/BUILD.bazel
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Expand Up @@ -339,6 +339,7 @@ libc_support_library(
"src/__support/CPP/type_traits/is_base_of.h",
"src/__support/CPP/type_traits/is_class.h",
"src/__support/CPP/type_traits/is_const.h",
"src/__support/CPP/type_traits/is_constant_evaluated.h",
"src/__support/CPP/type_traits/is_convertible.h",
"src/__support/CPP/type_traits/is_destructible.h",
"src/__support/CPP/type_traits/is_enum.h",
Expand Down Expand Up @@ -743,12 +744,12 @@ libc_support_library(
deps = [
":__support_common",
":__support_cpp_bit",
":__support_sign",
":__support_cpp_type_traits",
":__support_libc_assert",
":__support_macros_attributes",
":__support_macros_properties_types",
":__support_math_extras",
":__support_sign",
":__support_uint128",
],
)
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