Calls to auto-vectorized AVX512 functions

2021-02-07 Thread Naoki Shibata via Gcc
Hello, I have a question as to the auto-vectorizer in GCC. When AVX512 instruction is available, the auto-vectorizer in gcc sometimes generates calls to AVX2 functions instead of AVX512 functions. $ cat vabitest.c #include #include _Pragma ("omp declare simd simdlen(8) notinbranch") __

gcc-11-20210207 is now available

2021-02-07 Thread GCC Administrator via Gcc
Snapshot gcc-11-20210207 is now available on https://gcc.gnu.org/pub/gcc/snapshots/11-20210207/ and on various mirrors, see http://gcc.gnu.org/mirrors.html for details. This snapshot has been generated from the GCC 11 git branch with the following options: git://gcc.gnu.org/git/gcc.git branch

Re: [RFC 9/9] x86/mm: Implement PR_SET/GET_TAGGED_ADDR_CTRL with LAM

2021-02-07 Thread Dmitry Vyukov via Gcc
On Sun, Feb 7, 2021 at 3:09 PM Kirill A. Shutemov wrote: > > On Sun, Feb 07, 2021 at 09:07:02AM +0100, Dmitry Vyukov wrote: > > On Fri, Feb 5, 2021 at 4:43 PM H.J. Lu wrote: > > > > > > On Fri, Feb 5, 2021 at 7:16 AM Kirill A. Shutemov > > > wrote: > > > > > > > > Provide prctl() interface to en

Re: [RFC 9/9] x86/mm: Implement PR_SET/GET_TAGGED_ADDR_CTRL with LAM

2021-02-07 Thread Kirill A. Shutemov
On Sun, Feb 07, 2021 at 09:07:02AM +0100, Dmitry Vyukov wrote: > On Fri, Feb 5, 2021 at 4:43 PM H.J. Lu wrote: > > > > On Fri, Feb 5, 2021 at 7:16 AM Kirill A. Shutemov > > wrote: > > > > > > Provide prctl() interface to enabled LAM for user addresses. Depending > > > how many tag bits requested

GSoC

2021-02-07 Thread Ravi Kumar via Gcc
Hello Sir, I am Ravi Kumar. I am currently a 2nd year undergraduate(B.Tech) student. I want to participate in GSoC 2021 and want to work under the mentorship of GCC. WHY ME? Because: 1.I have a proper knowledge and experience in C and C++ Language. 2. I have learnt to use git and GitHub. 3. I

Re: [RFC 9/9] x86/mm: Implement PR_SET/GET_TAGGED_ADDR_CTRL with LAM

2021-02-07 Thread Dmitry Vyukov via Gcc
On Fri, Feb 5, 2021 at 4:43 PM H.J. Lu wrote: > > On Fri, Feb 5, 2021 at 7:16 AM Kirill A. Shutemov > wrote: > > > > Provide prctl() interface to enabled LAM for user addresses. Depending > > how many tag bits requested it may result in enabling LAM_U57 or > > LAM_U48. > > I prefer the alternate