https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83479
Richard Biener changed:
What|Removed |Added
Status|NEW |RESOLVED
Known to work|
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83479
--- Comment #9 from rguenther at suse dot de ---
On Tue, 19 Dec 2017, jakub at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83479
>
> --- Comment #8 from Jakub Jelinek ---
> (In reply to Richard Biener from comment #7)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83479
--- Comment #8 from Jakub Jelinek ---
(In reply to Richard Biener from comment #7)
> but it seems this is how _mm512_set1_pd works:
>
> extern __inline __m512d
> __attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
> _mm512_set1_p
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83479
Richard Biener changed:
What|Removed |Added
Status|WAITING |NEW
CC|
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83479
--- Comment #6 from Daniel Fruzynski ---
One correction: In c#4 line 17 has incorrect index, should be 8 instead of 9.
For some reason gcc did not complain here.
vLastRow = _mm512_load_pd (&data[8][0]);
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83479
--- Comment #5 from Daniel Fruzynski ---
Here is also valid AVX version, it also spills a bit. Compiled with "-O3
-march=haswell -Wall -Werror".
[code]
#include "immintrin.h"
double test(const double data[5][4])
{
__m256d vLastRow, vLastCol,
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83479
--- Comment #4 from Daniel Fruzynski ---
Rule No.1: never log bugs before morning coffee ;)
This does not produce warnings, compiled with "-O3 -march=haswell -mavx512f
-mavx512vl -mavx512bw -mavx512dq -mavx512cd -Wall -Werror".
[code]
#include "
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83479
--- Comment #3 from Richard Biener ---
And compiling with -Wall gives
t.c: In function ‘test’:
t.c:32:37: warning: index value is out of bound [-Warray-bounds]
vLastCol = _mm256_set1_pd(vLastRow[4]);
^
t.c
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83479
Richard Biener changed:
What|Removed |Added
Status|UNCONFIRMED |WAITING
Last reconfirmed|
