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c++, libstdc++: Add typeinfo for _Float{16,32,64,128,32x,64x} and __bf16 types [PR108075]

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The following patch adds typeinfos for the extended floating point
types and _Float{32,64}x.

2022-12-15  Jakub Jelinek  <jakub@redhat.com>

	PR libstdc++/108075
gcc/cp/
	* rtti.cc (emit_support_tinfos): Add pointers to
	{bfloat16,float{16,32,64,128,32x,64x,128x}}_type_node to fundamentals
	array.
gcc/testsuite/
	* g++.dg/cpp23/ext-floating13.C: New test.
libstdc++-v3/
	* config/abi/pre/gnu.ver (CXXABI_1.3.14): Export
	_ZTIDF[0-9]*[_bx], _ZTIPDF[0-9]*[_bx] and _ZTIPKDF[0-9]*[_bx].
	* testsuite/util/testsuite_abi.cc (check_version): Handle
	CXXABI_1.3.14.
This commit is contained in:
Jakub Jelinek 2022-12-15 17:02:55 +01:00
parent 85d0d2683b
commit 3f101e32e2
4 changed files with 50 additions and 2 deletions
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4
gcc/cp/rtti.cc
View file

@ -1603,7 +1603,9 @@ emit_support_tinfos (void)
&long_long_integer_type_node, &long_long_unsigned_type_node,
&float_type_node, &double_type_node, &long_double_type_node,
&dfloat32_type_node, &dfloat64_type_node, &dfloat128_type_node,
&nullptr_type_node,
&bfloat16_type_node, &float16_type_node, &float32_type_node,
&float64_type_node, &float128_type_node, &float32x_type_node,
&float64x_type_node, &float128x_type_node, &nullptr_type_node,
0
};
int ix;

35
gcc/testsuite/g++.dg/cpp23/ext-floating13.C Normal file
View file

@ -0,0 +1,35 @@
// P1467R9 - Extended floating-point types and standard names.
// { dg-do link { target c++23 } }
// { dg-options "" }
#include <typeinfo>
#ifdef __STDCPP_FLOAT16_T__
const std::type_info &a = typeid(decltype(0.0f16));
#endif
#ifdef __STDCPP_BFLOAT16_T__
const std::type_info &b = typeid(decltype(0.0bf16));
#endif
#ifdef __STDCPP_FLOAT32_T__
const std::type_info &c = typeid(decltype(0.0f32));
#endif
#ifdef __STDCPP_FLOAT64_T__
const std::type_info &d = typeid(decltype(0.0f64));
#endif
#ifdef __STDCPP_FLOAT128_T__
const std::type_info &e = typeid(decltype(0.0f128));
#endif
#ifdef __FLT32X_MAX__
const std::type_info &f = typeid(decltype(0.0f32x));
#endif
#ifdef __FLT64X_MAX__
const std::type_info &g = typeid(decltype(0.0f64x));
#endif
#ifdef __FLT128X_MAX__
const std::type_info &h = typeid(decltype(0.0f128x));
#endif
int
main ()
{
}

10
libstdc++-v3/config/abi/pre/gnu.ver
View file

@ -2794,6 +2794,16 @@ CXXABI_1.3.13 {
} CXXABI_1.3.12;
CXXABI_1.3.14 {
# typeinfo for _Float{16,32,64,128,32x,64x,128x} and
# __bf16
_ZTIDF[0-9]*[_bx];
_ZTIPDF[0-9]*[_bx];
_ZTIPKDF[0-9]*[_bx];
} CXXABI_1.3.13;
# Symbols in the support library (libsupc++) supporting transactional memory.
CXXABI_TM_1 {

3
libstdc++-v3/testsuite/util/testsuite_abi.cc
View file

@ -230,6 +230,7 @@ check_version(symbol& test, bool added)
known_versions.push_back("CXXABI_1.3.11");
known_versions.push_back("CXXABI_1.3.12");
known_versions.push_back("CXXABI_1.3.13");
known_versions.push_back("CXXABI_1.3.14");
known_versions.push_back("CXXABI_IEEE128_1.3.13");
known_versions.push_back("CXXABI_TM_1");
known_versions.push_back("CXXABI_FLOAT128");
@ -251,7 +252,7 @@ check_version(symbol& test, bool added)
bool latestp = (test.version_name == "GLIBCXX_3.4.31"
// XXX remove next line when baselines have been regenerated.
|| test.version_name == "GLIBCXX_IEEE128_3.4.30"
|| test.version_name == "CXXABI_1.3.13"
|| test.version_name == "CXXABI_1.3.14"
|| test.version_name == "CXXABI_FLOAT128"
|| test.version_name == "CXXABI_TM_1");
if (added && !latestp)