On Sun, 25 Sep 2016 19:01:14 +0200
Jakub Jelinek wrote:
> On Sun, Sep 25, 2016 at 02:48:19PM +0100, Sergei Trofimovich wrote:
> > From: Sergei Trofimovich
> >
> > Today I traced AVX2 optimisation bug in gcc and
> > distilled it down to '__builtin_ia32_gatheraltdiv4si256'
> > generated by gcc.
>
On Sun, Sep 25, 2016 at 02:48:19PM +0100, Sergei Trofimovich wrote:
> From: Sergei Trofimovich
>
> Today I traced AVX2 optimisation bug in gcc and
> distilled it down to '__builtin_ia32_gatheraltdiv4si256'
> generated by gcc.
>
> When I attempted to use this builtin directly
> in a simple progra
From: Sergei Trofimovich
Today I traced AVX2 optimisation bug in gcc and
distilled it down to '__builtin_ia32_gatheraltdiv4si256'
generated by gcc.
When I attempted to use this builtin directly
in a simple program gcc refused to recognise
it as known:
#include
void a (void) {
__builti
