Hi, Here is the benchmark result for is_unsigned:
https://github.com/ken-matsui/gcc-benches/blob/main/is_unsigned.md#sat-jul--8-041510-am-pdt-2023 Time: -66.908% Peak Memory Usage: -42.5139% Total Memory Usage: -46.3483% Sincerely, Ken Matsui On Sat, Jul 8, 2023 at 4:13 AM Ken Matsui <kmat...@gcc.gnu.org> 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. > > Signed-off-by: Ken Matsui <kmat...@gcc.gnu.org> > --- > 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 8cf0f2d0974..ec8de87d1a1 100644 > --- a/gcc/cp/constraint.cc > +++ b/gcc/cp/constraint.cc > @@ -3751,6 +3751,9 @@ 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 8b7fece0cc8..1a219243162 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 8fb47fd179e..2d48894d811 100644 > --- a/gcc/cp/semantics.cc > +++ b/gcc/cp/semantics.cc > @@ -12118,6 +12118,9 @@ 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); > > @@ -12296,6 +12299,7 @@ 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); > -- > 2.41.0 >
