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From: Matthias Kretz <m.kretz@gsi.de>
To: <gcc-patches@gcc.gnu.org>, <libstdc++@gcc.gnu.org>
Subject: [PATCH 7/7] libstdc++: Fix incorrect function call in -ffast-math optimization
Date: Wed, 15 Feb 2023 21:50:11 +0100	[thread overview]
Message-ID: <111787281.nniJfEyVGO@minbar> (raw)
In-Reply-To: <3238840.44csPzL39Z@minbar>

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


--
──────────────────────────────────────────────────────────────────────────
 Dr. Matthias Kretz                           https://mattkretz.github.io
 GSI Helmholtz Centre for Heavy Ion Research               https://gsi.de
 stdₓ::simd
──────────────────────────────────────────────────────────────────────────

[-- Attachment #2: 0007-libstdc-Fix-incorrect-function-call-in-ffast-math-op.patch --]
[-- Type: text/x-patch, Size: 1051 bytes --]

diff --git a/libstdc++-v3/include/experimental/bits/simd_math.h b/libstdc++-v3/include/experimental/bits/simd_math.h
index c20315e4e30..c91f05fceb3 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
@@ -1181,7 +1181,7 @@ _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

  parent reply	other threads:[~2023-02-15 20:50 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-02-15 20:48 [PATCH 0/7] Work on PR108030 and several simd bugfixes and testsuite improvements Matthias Kretz
2023-02-15 20:49 ` [PATCH 1/7] libstdc++: Ensure __builtin_constant_p isn't lost on the way Matthias Kretz
2023-02-15 23:20   ` Jonathan Wakely
2023-02-15 20:49 ` [PATCH 2/7] libstdc++: Annotate most lambdas with always_inline Matthias Kretz
2023-02-16 14:10   ` Jonathan Wakely
2023-02-15 20:49 ` [PATCH 3/7] libstdc++: Document timeout and timeout-factor of simd tests Matthias Kretz
2023-02-15 23:17   ` Jonathan Wakely
2023-02-15 20:49 ` [PATCH 4/7] libstdc++: Use a PCH to speed up check-simd Matthias Kretz
2023-02-16 14:13   ` Jonathan Wakely
2023-02-15 20:50 ` [PATCH 5/7] libstdc++: printf format string fix in testsuite Matthias Kretz
2023-02-15 23:16   ` Jonathan Wakely
2023-02-15 20:50 ` [PATCH 6/7] libstdc++: Fix incorrect __builtin_is_constant_evaluated calls Matthias Kretz
2023-02-15 23:21   ` Jonathan Wakely
2023-02-15 20:50 ` Matthias Kretz [this message]
2023-02-15 23:19   ` [PATCH 7/7] libstdc++: Fix incorrect function call in -ffast-math optimization Jonathan Wakely

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