* AVX __m256i return value
@ 2014-07-06 3:15 Roland Schulz
2014-07-06 6:53 ` Václav Zeman
0 siblings, 1 reply; 2+ messages in thread
From: Roland Schulz @ 2014-07-06 3:15 UTC (permalink / raw)
To: cygwin
Hi,
a non-inline function which returns a __m256i causes a segfault under Cygwin.
It seems it tries to save the return value on the stack without proper
alignment:
0x0000000100404dcb <+153>: mov 0x30(%rbp),%rax
=> 0x0000000100404dcf <+157>: vmovdqa %ymm0,(%rax)
This is with GCC 4.8.3. The code is fine with GCC/Clang/ICC under Linux and
MSVC/ICC under Windows. Is this a known problem or should I file a more
detailed bug report? If so should I report this here or on the GCC bugzilla?
Roland
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* Re: AVX __m256i return value
2014-07-06 3:15 AVX __m256i return value Roland Schulz
@ 2014-07-06 6:53 ` Václav Zeman
0 siblings, 0 replies; 2+ messages in thread
From: Václav Zeman @ 2014-07-06 6:53 UTC (permalink / raw)
To: cygwin
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On 6.7.2014 05:13, Roland Schulz wrote:
> Hi,
>
> a non-inline function which returns a __m256i causes a segfault under Cygwin.
> It seems it tries to save the return value on the stack without proper
> alignment:
> 0x0000000100404dcb <+153>: mov 0x30(%rbp),%rax
> => 0x0000000100404dcf <+157>: vmovdqa %ymm0,(%rax)
>
> This is with GCC 4.8.3. The code is fine with GCC/Clang/ICC under Linux and
> MSVC/ICC under Windows. Is this a known problem or should I file a more
> detailed bug report? If so should I report this here or on the GCC bugzilla?
I suggest to fill the GCC bugzilla bug report.
--
VZ
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