diff mbox series

[2/8] libstdc++: Fix simd build failure on clang

Message ID 3152270.5fSG56mABF@minbar
State New
Headers show
Series std::experimental::simd patchset | expand

Commit Message

Matthias Kretz Feb. 23, 2023, 8:49 a.m. UTC 
Clang does not support __attribute__ on lambdas. Therefore, only set
_GLIBCXX_SIMD_ALWAYS_INLINE_LAMBDA if __clang__ is not defined.

Signed-off-by: Matthias Kretz <m.kretz@gsi.de>

libstdc++-v3/ChangeLog:

	PR libstdc++/108030
	* include/experimental/bits/simd_detail.h
	(_GLIBCXX_SIMD_ALWAYS_INLINE_LAMBDA): Define as empty for
	__clang__.
---
 libstdc++-v3/include/experimental/bits/simd_detail.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)


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

Comments

Jonathan Wakely Feb. 23, 2023, 11:06 a.m. UTC | #1 
On Thu, 23 Feb 2023 at 08:54, Matthias Kretz via Libstdc++
<libstdc++@gcc.gnu.org> wrote:
>
>
>
> Clang does not support __attribute__ on lambdas. Therefore, only set
> _GLIBCXX_SIMD_ALWAYS_INLINE_LAMBDA if __clang__ is not defined.

OK for all branches.

> Signed-off-by: Matthias Kretz <m.kretz@gsi.de>
>
> libstdc++-v3/ChangeLog:
>
>         PR libstdc++/108030
>         * include/experimental/bits/simd_detail.h
>         (_GLIBCXX_SIMD_ALWAYS_INLINE_LAMBDA): Define as empty for
>         __clang__.
> ---
>  libstdc++-v3/include/experimental/bits/simd_detail.h | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
>
> --
> ──────────────────────────────────────────────────────────────────────────
>  Dr. Matthias Kretz                           https://mattkretz.github.io
>  GSI Helmholtz Centre for Heavy Ion Research               https://gsi.de
>  stdₓ::simd
> ──────────────────────────────────────────────────────────────────────────
diff mbox series

Patch

diff --git a/libstdc++-v3/include/experimental/bits/simd_detail.h b/libstdc++-v3/include/experimental/bits/simd_detail.h
index a0ad10efe0f..30cc1ef0eef 100644
--- a/libstdc++-v3/include/experimental/bits/simd_detail.h
+++ b/libstdc++-v3/include/experimental/bits/simd_detail.h
@@ -254,15 +254,16 @@  namespace experimental
 
 #ifdef __clang__
 #define _GLIBCXX_SIMD_NORMAL_MATH
+#define _GLIBCXX_SIMD_ALWAYS_INLINE_LAMBDA
 #else
 #define _GLIBCXX_SIMD_NORMAL_MATH                                              \
   [[__gnu__::__optimize__("finite-math-only,no-signed-zeros")]]
+#define _GLIBCXX_SIMD_ALWAYS_INLINE_LAMBDA __attribute__((__always_inline__))
 #endif
 #define _GLIBCXX_SIMD_NEVER_INLINE [[__gnu__::__noinline__]]
 #define _GLIBCXX_SIMD_INTRINSIC                                                \
   [[__gnu__::__always_inline__, __gnu__::__artificial__]] inline
 #define _GLIBCXX_SIMD_ALWAYS_INLINE [[__gnu__::__always_inline__]] inline
-#define _GLIBCXX_SIMD_ALWAYS_INLINE_LAMBDA __attribute__((__always_inline__))
 #define _GLIBCXX_SIMD_IS_UNLIKELY(__x) __builtin_expect(__x, 0)
 #define _GLIBCXX_SIMD_IS_LIKELY(__x) __builtin_expect(__x, 1)