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* [gcc r14-3308] libstdc++: Reuse double overload of __convert_to_v if possible
@ 2023-08-17 20:31 Jonathan Wakely
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From: Jonathan Wakely @ 2023-08-17 20:31 UTC (permalink / raw)
To: gcc-cvs, libstdc++-cvs
https://gcc.gnu.org/g:aad83d61d2e92b168688f7b6bd00b8604d11fc9f
commit r14-3308-gaad83d61d2e92b168688f7b6bd00b8604d11fc9f
Author: Jonathan Wakely <jwakely@redhat.com>
Date: Mon Jul 24 11:38:32 2023 +0100
libstdc++: Reuse double overload of __convert_to_v if possible
For targets where double and long double have the same representation we
can reuse the same __convert_to_v code for both types. This will
slightly reduce the size of the compiled code in the library.
libstdc++-v3/ChangeLog:
* config/locale/generic/c_locale.cc (__convert_to_v): Reuse
double overload for long double if possible.
Diff:
---
libstdc++-v3/config/locale/generic/c_locale.cc | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/libstdc++-v3/config/locale/generic/c_locale.cc b/libstdc++-v3/config/locale/generic/c_locale.cc
index 8849d78fdfac..866ba0361dc4 100644
--- a/libstdc++-v3/config/locale/generic/c_locale.cc
+++ b/libstdc++-v3/config/locale/generic/c_locale.cc
@@ -187,6 +187,11 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
__convert_to_v(const char* __s, long double& __v,
ios_base::iostate& __err, const __c_locale&) throw()
{
+#if __DBL_MANT_DIG__ == __LDBL_MANT_DIG__
+ double __d;
+ __convert_to_v(__s, __d, __err, __c_locale);
+ __v = __d;
+#else
// Assumes __s formatted for "C" locale.
const char* __sav = __set_C_locale();
if (!__sav)
@@ -233,6 +238,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
setlocale(LC_ALL, __sav);
delete [] __sav;
+#endif // __DBL_MANT_DIG__ == __LDBL_MANT_DIG__
}
void
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