From: Ken Matsui <kmatsui@cs.washington.edu>
To: gcc-patches@gcc.gnu.org
Cc: Patrick Palka <ppalka@redhat.com>
Subject: Re: [PATCH] c++: implement __remove_pointer built-in trait
Date: Mon, 20 Mar 2023 15:24:42 -0700 [thread overview]
Message-ID: <CAML+3pWaRbjzP56TgrfGZNOnGf5XSFkQ-HrHMEJJFFrTCByWbA@mail.gmail.com> (raw)
In-Reply-To: <CAML+3pWf_bYyeZcecrV=kmG_e6McD+JJPZuHJ2R2XeqJue6Wfw@mail.gmail.com>
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Please disregard this email.
On Sun, Mar 19, 2023 at 1:21 PM Ken Matsui <kmatsui@cs.washington.edu>
wrote:
> This patch implements built-in trait for std::remove_pointer.
>
> gcc/cp/ChangeLog:
>
> * cp-trait.def: Define __remove_pointer.
> * semantics.cc (finish_trait_type): Handle CPTK_REMOVE_POINTER.
>
> gcc/testsuite/ChangeLog:
>
> * g++.dg/ext/has-builtin-1.C: Test existence of __remove_pointer.
> * g++.dg/ext/remove_pointer.C: New test.
>
> ---
> diff --git a/gcc/cp/cp-trait.def b/gcc/cp/cp-trait.def
> index bac593c0094..985b43e0d97 100644
> --- a/gcc/cp/cp-trait.def
> +++ b/gcc/cp/cp-trait.def
> @@ -90,6 +90,7 @@ DEFTRAIT_EXPR (IS_DEDUCIBLE, "__is_deducible ", 2)
> DEFTRAIT_TYPE (REMOVE_CV, "__remove_cv", 1)
> DEFTRAIT_TYPE (REMOVE_REFERENCE, "__remove_reference", 1)
> DEFTRAIT_TYPE (REMOVE_CVREF, "__remove_cvref", 1)
> +DEFTRAIT_TYPE (REMOVE_POINTER, "__remove_pointer", 1)
> DEFTRAIT_TYPE (UNDERLYING_TYPE, "__underlying_type", 1)
>
> /* These traits yield a type pack, not a type, and are represented by
> diff --git a/gcc/cp/semantics.cc b/gcc/cp/semantics.cc
> index 87c2e8a7111..92db1f670ac 100644
> --- a/gcc/cp/semantics.cc
> +++ b/gcc/cp/semantics.cc
> @@ -12273,6 +12273,10 @@ finish_trait_type (cp_trait_kind kind, tree
> type1, tree type2)
> if (TYPE_REF_P (type1))
> type1 = TREE_TYPE (type1);
> return cv_unqualified (type1);
> + case CPTK_REMOVE_POINTER:
> + if (TYPE_PTR_P (type1))
> + type1 = TREE_TYPE (type1);
> + return type1;
>
> #define DEFTRAIT_EXPR(CODE, NAME, ARITY) \
> case CPTK_##CODE:
> diff --git a/gcc/testsuite/g++.dg/ext/has-builtin-1.C
> b/gcc/testsuite/g++.dg/ext/has-builtin-1.C
> index f343e153e56..e21e0a95509 100644
> --- a/gcc/testsuite/g++.dg/ext/has-builtin-1.C
> +++ b/gcc/testsuite/g++.dg/ext/has-builtin-1.C
> @@ -146,3 +146,6 @@
> #if !__has_builtin (__remove_cvref)
> # error "__has_builtin (__remove_cvref) failed"
> #endif
> +#if !__has_builtin (__remove_pointer)
> +# error "__has_builtin (__remove_pointer) failed"
> +#endif
> diff --git a/gcc/testsuite/g++.dg/ext/remove_pointer.C
> b/gcc/testsuite/g++.dg/ext/remove_pointer.C
> new file mode 100644
> index 00000000000..7b13db93950
> --- /dev/null
> +++ b/gcc/testsuite/g++.dg/ext/remove_pointer.C
> @@ -0,0 +1,51 @@
> +// { dg-do compile { target c++11 } }
> +
> +#define SA(X) static_assert((X),#X)
> +
> +SA(__is_same(__remove_pointer(int), int));
> +SA(__is_same(__remove_pointer(int*), int));
> +SA(__is_same(__remove_pointer(int**), int*));
> +
> +SA(__is_same(__remove_pointer(const int*), const int));
> +SA(__is_same(__remove_pointer(const int**), const int*));
> +SA(__is_same(__remove_pointer(int* const), int));
> +SA(__is_same(__remove_pointer(int** const), int*));
> +SA(__is_same(__remove_pointer(int* const* const), int* const));
> +
> +SA(__is_same(__remove_pointer(volatile int*), volatile int));
> +SA(__is_same(__remove_pointer(volatile int**), volatile int*));
> +SA(__is_same(__remove_pointer(int* volatile), int));
> +SA(__is_same(__remove_pointer(int** volatile), int*));
> +SA(__is_same(__remove_pointer(int* volatile* volatile), int* volatile));
> +
> +SA(__is_same(__remove_pointer(const volatile int*), const volatile int));
> +SA(__is_same(__remove_pointer(const volatile int**), const volatile
> int*));
> +SA(__is_same(__remove_pointer(const int* volatile), const int));
> +SA(__is_same(__remove_pointer(volatile int* const), volatile int));
> +SA(__is_same(__remove_pointer(int* const volatile), int));
> +SA(__is_same(__remove_pointer(const int** volatile), const int*));
> +SA(__is_same(__remove_pointer(volatile int** const), volatile int*));
> +SA(__is_same(__remove_pointer(int** const volatile), int*));
> +SA(__is_same(__remove_pointer(int* const* const volatile), int* const));
> +SA(__is_same(__remove_pointer(int* volatile* const volatile), int*
> volatile));
> +SA(__is_same(__remove_pointer(int* const volatile* const volatile),
> int* const volatile));
> +
> +SA(__is_same(__remove_pointer(int&), int&));
> +SA(__is_same(__remove_pointer(const int&), const int&));
> +SA(__is_same(__remove_pointer(volatile int&), volatile int&));
> +SA(__is_same(__remove_pointer(const volatile int&), const volatile int&));
> +
> +SA(__is_same(__remove_pointer(int&&), int&&));
> +SA(__is_same(__remove_pointer(const int&&), const int&&));
> +SA(__is_same(__remove_pointer(volatile int&&), volatile int&&));
> +SA(__is_same(__remove_pointer(const volatile int&&), const volatile
> int&&));
> +
> +SA(__is_same(__remove_pointer(int[3]), int[3]));
> +SA(__is_same(__remove_pointer(const int[3]), const int[3]));
> +SA(__is_same(__remove_pointer(volatile int[3]), volatile int[3]));
> +SA(__is_same(__remove_pointer(const volatile int[3]), const volatile
> int[3]));
> +
> +SA(__is_same(__remove_pointer(int(int)), int(int)));
> +SA(__is_same(__remove_pointer(int(*const)(int)), int(int)));
> +SA(__is_same(__remove_pointer(int(*volatile)(int)), int(int)));
> +SA(__is_same(__remove_pointer(int(*const volatile)(int)), int(int)));
>
prev parent reply other threads:[~2023-03-20 22:24 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-19 20:21 Ken Matsui
2023-03-20 22:24 ` Ken Matsui [this message]
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