[gcc r12-9184] libstdc++: Fix incorrect function call in -ffast-math optimization

[Matthias Kretz]

https://gcc.gnu.org/g:c70a6414d74431a9370c6806ea04882185774fe9

commit r12-9184-gc70a6414d74431a9370c6806ea04882185774fe9
Author: Matthias Kretz <m.kretz@gsi.de>
Date:   Fri Feb 3 17:47:05 2023 +0100

    libstdc++: Fix incorrect function call in -ffast-math optimization
    
    Signed-off-by: Matthias Kretz <m.kretz@gsi.de>
    
    libstdc++-v3/ChangeLog:
    
            * include/experimental/bits/simd_math.h (__hypot): Bitcasting
            between scalars requires the __bit_cast helper function instead
            of simd_bit_cast.
    
    (cherry picked from commit a5de17d9120dde7e6598a05ea4d1556c2783c69b)

Diff:
---
 libstdc++-v3/include/experimental/bits/simd_math.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libstdc++-v3/include/experimental/bits/simd_math.h b/libstdc++-v3/include/experimental/bits/simd_math.h
index 5fe44adceb5..b008139c11c 100644
--- a/libstdc++-v3/include/experimental/bits/simd_math.h
+++ b/libstdc++-v3/include/experimental/bits/simd_math.h
@@ -1010,7 +1010,7 @@ template <typename _VV, typename = __detail::__odr_helper>
 	    using _IV = rebind_simd_t<_Ip, _V>;
 	    const auto __as_int = simd_bit_cast<_IV>(__hi_exp);
 	    const _V __scale
-	      = simd_bit_cast<_V>(2 * simd_bit_cast<_Ip>(_Tp(1)) - __as_int);
+	      = simd_bit_cast<_V>(2 * __bit_cast<_Ip>(_Tp(1)) - __as_int);
 #else
 	    const _V __scale = (__hi_exp ^ __inf) * _Tp(.5);
 #endif
@@ -1180,7 +1180,7 @@ _GLIBCXX_SIMD_CVTING2(hypot)
 		using _IV = rebind_simd_t<_Ip, _V>;
 		const auto __as_int = simd_bit_cast<_IV>(__hi_exp);
 		const _V __scale
-		  = simd_bit_cast<_V>(2 * simd_bit_cast<_Ip>(_Tp(1)) - __as_int);
+		  = simd_bit_cast<_V>(2 * __bit_cast<_Ip>(_Tp(1)) - __as_int);
 #else
 		const _V __scale = (__hi_exp ^ __inf) * _Tp(.5);
 #endif