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* [Bug c++/107825] New: uninitialized variable warning in immintrin.h with skylake architecture
@ 2022-11-22 19:05 bill.trost at harmonicinc dot com
2022-11-22 19:06 ` [Bug c++/107825] " bill.trost at harmonicinc dot com
2022-11-22 19:14 ` [Bug c++/107825] uninitialized variable warning in avx512fintrin.h " pinskia at gcc dot gnu.org
0 siblings, 2 replies; 3+ messages in thread
From: bill.trost at harmonicinc dot com @ 2022-11-22 19:05 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107825
Bug ID: 107825
Summary: uninitialized variable warning in immintrin.h with
skylake architecture
Product: gcc
Version: 12.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: bill.trost at harmonicinc dot com
Target Milestone: ---
Created attachment 53948
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=53948&action=edit
Error mesages generated by compiling the program using the indicated flags
The following program generates warnings about uninitialized parameters in
avx512fintrin.h.
#include <immintrin.h>
__m512 f(__m512i a)
{
return _mm512_cvtepi32_ps(a);
}
// Compiler used: x86-64 gcc 12.2
// Options used: -O3 -Wall -Werror -march=skylake-avx512
Warnings are attached, but in summary, the value _mm512_undefined_ps() passed
to __builtin_ia32_cvtdq2ps512_mask is deliberately uninitialized.
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug c++/107825] uninitialized variable warning in immintrin.h with skylake architecture
2022-11-22 19:05 [Bug c++/107825] New: uninitialized variable warning in immintrin.h with skylake architecture bill.trost at harmonicinc dot com
@ 2022-11-22 19:06 ` bill.trost at harmonicinc dot com
2022-11-22 19:14 ` [Bug c++/107825] uninitialized variable warning in avx512fintrin.h " pinskia at gcc dot gnu.org
1 sibling, 0 replies; 3+ messages in thread
From: bill.trost at harmonicinc dot com @ 2022-11-22 19:06 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107825
Bill T. <bill.trost at harmonicinc dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
URL| |https://godbolt.org/z/h8v1j
| |4Gac
CC| |bill.trost at harmonicinc dot com
--- Comment #1 from Bill T. <bill.trost at harmonicinc dot com> ---
Weirdly, the program seems to compile fine if C is used rather than C++.
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug c++/107825] uninitialized variable warning in avx512fintrin.h with skylake architecture
2022-11-22 19:05 [Bug c++/107825] New: uninitialized variable warning in immintrin.h with skylake architecture bill.trost at harmonicinc dot com
2022-11-22 19:06 ` [Bug c++/107825] " bill.trost at harmonicinc dot com
@ 2022-11-22 19:14 ` pinskia at gcc dot gnu.org
1 sibling, 0 replies; 3+ messages in thread
From: pinskia at gcc dot gnu.org @ 2022-11-22 19:14 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107825
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Dup of bug 105593.
*** This bug has been marked as a duplicate of bug 105593 ***
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2022-11-22 19:14 UTC | newest]
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2022-11-22 19:05 [Bug c++/107825] New: uninitialized variable warning in immintrin.h with skylake architecture bill.trost at harmonicinc dot com
2022-11-22 19:06 ` [Bug c++/107825] " bill.trost at harmonicinc dot com
2022-11-22 19:14 ` [Bug c++/107825] uninitialized variable warning in avx512fintrin.h " pinskia at gcc dot gnu.org
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