gcov and initialized data

2018-05-03 Thread taylor, david
I want to use gcov in an embedded type environment. It supports both cold boot and warm boot. For warm boot it does not reload the program from media, instead it 'just' jumps to the start and begins again. Due to support for warm boot, it does not support read-write initialized data. Writable

Re: gcov and initialized data

2018-05-03 Thread Nathan Sidwell
On 05/03/2018 01:09 PM, taylor, david wrote: When you build your program for code coverage (-ftest-coverage -fprofile-arcs), GCC creates some initialized read-write GCOV related data. Has anyone modified GCC to, presumably either under control of a command line option or possibly a configure ti

Interesting statistics on vectorization for Skylake avx512 (i9-7900) - 8.1 vs. 7.3.

2018-05-03 Thread Toon Moene
Consider the attached Fortran code (the most expensive routine, computation-wise, in our weather forecasting model). verint.s.7.3 is the result of: gfortran -g -O3 -S -march=native -mtune=native verint.f using release 7.3. verint.s.8.1 is the result of: gfortran -g -O3 -S -march=native -mtun

RE: gcov and initialized data

2018-05-03 Thread taylor, david
> From: Nathan Sidwell [mailto:nathanmsidw...@gmail.com] On Behalf Of > Nathan Sidwell > Sent: Thursday, May 3, 2018 1:58 PM > To: taylor, david; gcc@gcc.gnu.org > Subject: Re: gcov and initialized data > > On 05/03/2018 01:09 PM, taylor, david wrote: > > > When you build your program for code c

gcc-7-20180503 is now available

2018-05-03 Thread gccadmin
Snapshot gcc-7-20180503 is now available on ftp://gcc.gnu.org/pub/gcc/snapshots/7-20180503/ 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

Re: GCC 8.1 Released

2018-05-03 Thread Bert Wesarg
Hi, On Wed, May 2, 2018 at 2:15 PM, Jakub Jelinek wrote: > Some code that compiled successfully with older GCC versions might require > source changes, see http://gcc.gnu.org/gcc-8/porting_to.html for > details. in "Fortran language issues" it reads: "Prior to GCC 7", shouldn't that be "Prior to

Re: GCC 8.1 Released

2018-05-03 Thread Janne Blomqvist
On Fri, May 4, 2018 at 9:22 AM, Bert Wesarg wrote: > Hi, > > On Wed, May 2, 2018 at 2:15 PM, Jakub Jelinek wrote: > > Some code that compiled successfully with older GCC versions might > require > > source changes, see http://gcc.gnu.org/gcc-8/porting_to.html for > > details. > > in "Fortran lan