[clang] [Clang] Add attribute for consteval builtins; Declare constexpr builtins as constexpr in C++ (PR #91894)

https://github.com/MitalAshok updated https://github.com/llvm/llvm-project/pull/91894 >From 56aed689dc5825fc5bacc6dfdff58ee0eaf71f82 Mon Sep 17 00:00:00 2001 From: Mital Ashok Date: Sun, 12 May 2024 19:48:24 +0100 Subject: [PATCH 1/3] [Clang] Add attribute for consteval builtins; Declare

[clang] [Clang] Add attribute for consteval builtins; Declare constexpr builtins as constexpr in C++ (PR #91894)

https://github.com/MitalAshok updated https://github.com/llvm/llvm-project/pull/91894 >From 56aed689dc5825fc5bacc6dfdff58ee0eaf71f82 Mon Sep 17 00:00:00 2001 From: Mital Ashok Date: Sun, 12 May 2024 19:48:24 +0100 Subject: [PATCH 1/3] [Clang] Add attribute for consteval builtins; Declare

[clang] [Clang] Add attribute for consteval builtins; Declare constexpr builtins as constexpr in C++ (PR #91894)

@@ -14,13 +14,18 @@ void __builtin_va_copy(double d); // expected-error@+2 {{cannot redeclare builtin function '__builtin_va_end'}} // expected-note@+1 {{'__builtin_va_end' is a builtin with type}} void __builtin_va_end(__builtin_va_list); -// RUN: %clang_cc1 %s -fsyntax-only

[clang] [Clang] Add attribute for consteval builtins; Declare constexpr builtins as constexpr in C++ (PR #91894)

@@ -14,13 +14,18 @@ void __builtin_va_copy(double d); // expected-error@+2 {{cannot redeclare builtin function '__builtin_va_end'}} // expected-note@+1 {{'__builtin_va_end' is a builtin with type}} void __builtin_va_end(__builtin_va_list); -// RUN: %clang_cc1 %s -fsyntax-only

[clang] [Clang] Add attribute for consteval builtins; Declare constexpr builtins as constexpr in C++ (PR #91894)

@@ -14,13 +14,18 @@ void __builtin_va_copy(double d); // expected-error@+2 {{cannot redeclare builtin function '__builtin_va_end'}} // expected-note@+1 {{'__builtin_va_end' is a builtin with type}} void __builtin_va_end(__builtin_va_list); -// RUN: %clang_cc1 %s -fsyntax-only

[clang] [Clang] Add attribute for consteval builtins; Declare constexpr builtins as constexpr in C++ (PR #91894)

@@ -14,13 +14,18 @@ void __builtin_va_copy(double d); // expected-error@+2 {{cannot redeclare builtin function '__builtin_va_end'}} // expected-note@+1 {{'__builtin_va_end' is a builtin with type}} void __builtin_va_end(__builtin_va_list); -// RUN: %clang_cc1 %s -fsyntax-only

[clang] [Clang] Add attribute for consteval builtins; Declare constexpr builtins as constexpr in C++ (PR #91894)

https://github.com/cor3ntin edited https://github.com/llvm/llvm-project/pull/91894 ___ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits

[clang] [Clang] Add attribute for consteval builtins; Declare constexpr builtins as constexpr in C++ (PR #91894)

@@ -14,13 +14,18 @@ void __builtin_va_copy(double d); // expected-error@+2 {{cannot redeclare builtin function '__builtin_va_end'}} // expected-note@+1 {{'__builtin_va_end' is a builtin with type}} void __builtin_va_end(__builtin_va_list); -// RUN: %clang_cc1 %s -fsyntax-only

[clang] [Clang] Add attribute for consteval builtins; Declare constexpr builtins as constexpr in C++ (PR #91894)

@@ -14,13 +14,18 @@ void __builtin_va_copy(double d); // expected-error@+2 {{cannot redeclare builtin function '__builtin_va_end'}} // expected-note@+1 {{'__builtin_va_end' is a builtin with type}} void __builtin_va_end(__builtin_va_list); -// RUN: %clang_cc1 %s -fsyntax-only

[clang] [Clang] Add attribute for consteval builtins; Declare constexpr builtins as constexpr in C++ (PR #91894)

@@ -14,13 +14,18 @@ void __builtin_va_copy(double d); // expected-error@+2 {{cannot redeclare builtin function '__builtin_va_end'}} // expected-note@+1 {{'__builtin_va_end' is a builtin with type}} void __builtin_va_end(__builtin_va_list); -// RUN: %clang_cc1 %s -fsyntax-only

[clang] [Clang] Add attribute for consteval builtins; Declare constexpr builtins as constexpr in C++ (PR #91894)

MitalAshok wrote: Currently, GCC's behaviour for builtin function redeclarations is to just ignore `constexpr`: . This is slightly stricter, allowing non-`constexpr` redeclarations for `constexpr` builtins but still disallowing `constexpr` declarations for

[clang] [Clang] Add attribute for consteval builtins; Declare constexpr builtins as constexpr in C++ (PR #91894)

llvmbot wrote: @llvm/pr-subscribers-clang Author: Mital Ashok (MitalAshok) Changes Also support redeclaring now-constexpr builtins without constexpr --- Full diff: https://github.com/llvm/llvm-project/pull/91894.diff 6 Files Affected: - (modified) clang/include/clang/Basic/Builtins.h

[clang] [Clang] Add attribute for consteval builtins; Declare constexpr builtins as constexpr in C++ (PR #91894)

https://github.com/MitalAshok created https://github.com/llvm/llvm-project/pull/91894 Also support redeclaring now-constexpr builtins without constexpr >From 56aed689dc5825fc5bacc6dfdff58ee0eaf71f82 Mon Sep 17 00:00:00 2001 From: Mital Ashok Date: Sun, 12 May 2024 19:48:24 +0100 Subject: