Re: SLP-based reduction vectorization

On Mon, Jan 21, 2019 at 2:20 PM Anton Youdkevitch wrote: > > Here is the prototype for doing vectorized reduction > using SLP approach. I would appreciate feedback if this > is a feasible approach and if overall the direction is > right. > > The idea is to vectorize reduction like this > > S = A[0

Re: __builtin_dynamic_object_size

On Wed, Jan 23, 2019 at 12:33 PM Jakub Jelinek wrote: > > On Wed, Jan 23, 2019 at 10:40:43AM +, Jonathan Wakely wrote: > > There's a patch to add __builtin_dynamic_object_size to clang: > > https://reviews.llvm.org/D56760 > > > > It was suggested that this could be done via a new flag bit for

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Re: SLP-based reduction vectorization

Richard, Thanks a lot for the response! I will definitely try the constructor approach. You mentioned non-grouped store. Is the handling of such stores actually there and I just missed it? It was a big hassle for me as I didn't manage to find it and assumed there isn't one. I have a question (a

Re: SLP-based reduction vectorization

On Thu, Jan 24, 2019 at 1:04 PM Anton Youdkevitch wrote: > > Richard, > > Thanks a lot for the response! I will definitely > try the constructor approach. > > You mentioned non-grouped store. Is the handling > of such stores actually there and I just missed > it? It was a big hassle for me as I di

Re: __builtin_dynamic_object_size

[Please CC me; I'm not subscribed] On Thu, 24 Jan 2019 11:59 at Richard Biener wrote: > On Wed, Jan 23, 2019 at 12:33 PM Jakub Jelinek wrote: > > On Wed, Jan 23, 2019 at 10:40:43AM +, Jonathan Wakely wrote: > > > There's a patch to add __builtin_dynamic_object_size to clang: > > > https://rev

gcc-7-20190124 is now available

Snapshot gcc-7-20190124 is now available on ftp://gcc.gnu.org/pub/gcc/snapshots/7-20190124/ and on various mirrors, see http://gcc.gnu.org/mirrors.html for details. This snapshot has been generated from the GCC 7 SVN branch with the following options: svn://gcc.gnu.org/svn/gcc/branches/gcc-7

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Enabling LTO for target libraries (e.g., libgo, libstdc++)

I am attempting to convince GCC to build target libraries with link-time optimizations enabled. I am primarily interested in libgo, but this discussion seems like it would be applicable to libstdc++, libgfortran, etc. The benchmarking I've done suggests that LTOing libgo yields a 5-20% speedup on v