From: Ken Matsui <kmatsui@cs.washington.edu>
To: gcc-patches@gcc.gnu.org
Cc: libstdc++@gcc.gnu.org, ppalka@redhat.com,
Jonathan Wakely <jwakely@redhat.com>
Subject: Re: [PATCH v2 1/2] c++: implement __is_unsigned built-in trait
Date: Wed, 22 Mar 2023 14:23:30 -0700 [thread overview]
Message-ID: <CAML+3pUJFJgHQqsXuh5CGKj=AxOphEzy25UbaOy-OSVFh+yM8w@mail.gmail.com> (raw)
In-Reply-To: <20230321170700.4153-1-kmatsui@cs.washington.edu>
It seems I missed including Jonathan in the new patch. Could you
please take a look?
On Tue, Mar 21, 2023 at 10:07 AM Ken Matsui <kmatsui@cs.washington.edu> wrote:
>
> This patch implements built-in trait for std::is_unsigned.
>
> gcc/cp/ChangeLog:
>
> * cp-trait.def: Define __is_unsigned.
> * constraint.cc (diagnose_trait_expr): Handle CPTK_IS_UNSIGNED.
> * semantics.cc (trait_expr_value): Likewise.
> (finish_trait_expr): Likewise.
>
> gcc/testsuite/ChangeLog:
>
> * g++.dg/ext/has-builtin-1.C: Test existence of __is_unsigned.
> * g++.dg/ext/is_unsigned.C: New test.
> ---
> gcc/cp/constraint.cc | 3 ++
> gcc/cp/cp-trait.def | 1 +
> gcc/cp/semantics.cc | 4 ++
> gcc/testsuite/g++.dg/ext/has-builtin-1.C | 3 ++
> gcc/testsuite/g++.dg/ext/is_unsigned.C | 47 ++++++++++++++++++++++++
> 5 files changed, 58 insertions(+)
> create mode 100644 gcc/testsuite/g++.dg/ext/is_unsigned.C
>
> diff --git a/gcc/cp/constraint.cc b/gcc/cp/constraint.cc
> index 273d15ab097..bc4c3d3ec57 100644
> --- a/gcc/cp/constraint.cc
> +++ b/gcc/cp/constraint.cc
> @@ -3747,6 +3747,9 @@ diagnose_trait_expr (tree expr, tree args)
> case CPTK_IS_UNION:
> inform (loc, " %qT is not a union", t1);
> break;
> + case CPTK_IS_UNSIGNED:
> + inform (loc, " %qT is not an unsigned type", t1);
> + break;
> case CPTK_IS_AGGREGATE:
> inform (loc, " %qT is not an aggregate", t1);
> break;
> diff --git a/gcc/cp/cp-trait.def b/gcc/cp/cp-trait.def
> index bac593c0094..9f1fff9043e 100644
> --- a/gcc/cp/cp-trait.def
> +++ b/gcc/cp/cp-trait.def
> @@ -82,6 +82,7 @@ DEFTRAIT_EXPR (IS_TRIVIALLY_ASSIGNABLE, "__is_trivially_assignable", 2)
> DEFTRAIT_EXPR (IS_TRIVIALLY_CONSTRUCTIBLE, "__is_trivially_constructible", -1)
> DEFTRAIT_EXPR (IS_TRIVIALLY_COPYABLE, "__is_trivially_copyable", 1)
> DEFTRAIT_EXPR (IS_UNION, "__is_union", 1)
> +DEFTRAIT_EXPR (IS_UNSIGNED, "__is_unsigned", 1)
> DEFTRAIT_EXPR (REF_CONSTRUCTS_FROM_TEMPORARY, "__reference_constructs_from_temporary", 2)
> DEFTRAIT_EXPR (REF_CONVERTS_FROM_TEMPORARY, "__reference_converts_from_temporary", 2)
> /* FIXME Added space to avoid direct usage in GCC 13. */
> diff --git a/gcc/cp/semantics.cc b/gcc/cp/semantics.cc
> index 87c2e8a7111..d43e2543490 100644
> --- a/gcc/cp/semantics.cc
> +++ b/gcc/cp/semantics.cc
> @@ -12031,6 +12031,9 @@ trait_expr_value (cp_trait_kind kind, tree type1, tree type2)
> case CPTK_IS_UNION:
> return type_code1 == UNION_TYPE;
>
> + case CPTK_IS_UNSIGNED:
> + return TYPE_UNSIGNED (type1);
> +
> case CPTK_IS_ASSIGNABLE:
> return is_xible (MODIFY_EXPR, type1, type2);
>
> @@ -12200,6 +12203,7 @@ finish_trait_expr (location_t loc, cp_trait_kind kind, tree type1, tree type2)
> case CPTK_IS_ENUM:
> case CPTK_IS_UNION:
> case CPTK_IS_SAME:
> + case CPTK_IS_UNSIGNED:
> break;
>
> case CPTK_IS_LAYOUT_COMPATIBLE:
> diff --git a/gcc/testsuite/g++.dg/ext/has-builtin-1.C b/gcc/testsuite/g++.dg/ext/has-builtin-1.C
> index f343e153e56..20bf8e6cad5 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 (__is_unsigned)
> +# error "__has_builtin (__is_unsigned) failed"
> +#endif
> diff --git a/gcc/testsuite/g++.dg/ext/is_unsigned.C b/gcc/testsuite/g++.dg/ext/is_unsigned.C
> new file mode 100644
> index 00000000000..2bb45d209a7
> --- /dev/null
> +++ b/gcc/testsuite/g++.dg/ext/is_unsigned.C
> @@ -0,0 +1,47 @@
> +// { dg-do compile { target c++11 } }
> +
> +#include <testsuite_tr1.h>
> +
> +using namespace __gnu_test;
> +
> +#define SA(X) static_assert((X),#X)
> +#define SA_TEST_CATEGORY(TRAIT, X, expect) \
> + SA(TRAIT(X) == expect); \
> + SA(TRAIT(const X) == expect); \
> + SA(TRAIT(volatile X) == expect); \
> + SA(TRAIT(const volatile X) == expect)
> +
> +SA_TEST_CATEGORY(__is_unsigned, void, false);
> +
> +SA_TEST_CATEGORY(__is_unsigned, bool, (bool(-1) > bool(0)));
> +SA_TEST_CATEGORY(__is_unsigned, char, (char(-1) > char(0)));
> +SA_TEST_CATEGORY(__is_unsigned, signed char, false);
> +SA_TEST_CATEGORY(__is_unsigned, unsigned char, true);
> +SA_TEST_CATEGORY(__is_unsigned, wchar_t, (wchar_t(-1) > wchar_t(0)));
> +SA_TEST_CATEGORY(__is_unsigned, short, false);
> +SA_TEST_CATEGORY(__is_unsigned, unsigned short, true);
> +SA_TEST_CATEGORY(__is_unsigned, int, false);
> +SA_TEST_CATEGORY(__is_unsigned, unsigned int, true);
> +SA_TEST_CATEGORY(__is_unsigned, long, false);
> +SA_TEST_CATEGORY(__is_unsigned, unsigned long, true);
> +SA_TEST_CATEGORY(__is_unsigned, long long, false);
> +SA_TEST_CATEGORY(__is_unsigned, unsigned long long, true);
> +
> +SA_TEST_CATEGORY(__is_unsigned, float, false);
> +SA_TEST_CATEGORY(__is_unsigned, double, false);
> +SA_TEST_CATEGORY(__is_unsigned, long double, false);
> +
> +#ifndef __STRICT_ANSI__
> +// GNU Extensions.
> +#ifdef __SIZEOF_INT128__
> +SA_TEST_CATEGORY(__is_unsigned, unsigned __int128, true);
> +SA_TEST_CATEGORY(__is_unsigned, __int128, false);
> +#endif
> +
> +#ifdef _GLIBCXX_USE_FLOAT128
> +SA_TEST_CATEGORY(__is_unsigned, __float128, false);
> +#endif
> +#endif
> +
> +// Sanity check.
> +SA_TEST_CATEGORY(__is_unsigned, ClassType, false);
> --
> 2.40.0
>
prev parent reply other threads:[~2023-03-22 21:23 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-21 16:39 [PATCH " Ken Matsui
2023-03-21 16:39 ` [PATCH 2/2] libstdc++: use new built-in trait __is_unsigned Ken Matsui
2023-03-21 16:44 ` Jonathan Wakely
2023-03-21 17:02 ` Ken Matsui
2023-03-23 0:42 ` [PATCH v2 " Ken Matsui
2023-03-21 17:08 ` Ken Matsui
2023-03-21 16:42 ` [PATCH 1/2] c++: implement __is_unsigned built-in trait Jonathan Wakely
2023-03-23 0:41 ` [PATCH v2 " Ken Matsui
2023-07-08 5:54 ` [PATCH v3 " Ken Matsui
2023-07-08 11:13 ` [PATCH v4 " Ken Matsui
2023-07-08 11:13 ` [PATCH v4 2/2] libstdc++: use new built-in trait __is_unsigned Ken Matsui
2023-07-12 10:04 ` Jonathan Wakely
2023-07-08 11:25 ` [PATCH v4 1/2] c++: implement __is_unsigned built-in trait Ken Matsui
2023-09-04 15:00 ` [PING][PATCH " Ken Matsui
2023-03-21 17:06 ` [PATCH v2 " Ken Matsui
2023-03-22 21:23 ` Ken Matsui [this message]
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