Re: Tree SSA If-combine optimization pass in GCC

2015-02-18 Thread Richard Biener
On Tue, Feb 17, 2015 at 5:24 PM, Ajit Kumar Agarwal wrote: > > > -Original Message- > From: Richard Biener [mailto:richard.guent...@gmail.com] > Sent: Tuesday, February 17, 2015 5:49 PM > To: Ajit Kumar Agarwal > Cc: gcc@gcc.gnu.org; Vinod Kathail; Shail Aditya Gupta; Vidhumouli Hunsigida;

Obscure crashes due to gcc 4.9 -O2 => -fisolate-erroneous-paths-dereference

2015-02-18 Thread Jeff Prothero
Starting with gcc 4.9, -O2 implicitly invokes -fisolate-erroneous-paths-dereference: which https://gcc.gnu.org/onlinedocs/gcc/Optimize-Options.html documents as Detect paths that trigger erroneous or undefined behavior due to dereferencing a null pointer. Isolate those paths f

Re: Obscure crashes due to gcc 4.9 -O2 => -fisolate-erroneous-paths-dereference

2015-02-18 Thread Jakub Jelinek
On Wed, Feb 18, 2015 at 11:21:56AM -0800, Jeff Prothero wrote: > Starting with gcc 4.9, -O2 implicitly invokes > > -fisolate-erroneous-paths-dereference: > > which > > https://gcc.gnu.org/onlinedocs/gcc/Optimize-Options.html > > documents as > > Detect paths that trigger erroneous

Re: Obscure crashes due to gcc 4.9 -O2 => -fisolate-erroneous-paths-dereference

2015-02-18 Thread Andrew Pinski
On Wed, Feb 18, 2015 at 11:21 AM, Jeff Prothero wrote: > > Starting with gcc 4.9, -O2 implicitly invokes > > -fisolate-erroneous-paths-dereference: > > which > > https://gcc.gnu.org/onlinedocs/gcc/Optimize-Options.html > > documents as > > Detect paths that trigger erroneous or undefin

gcc-4.9-20150218 is now available

2015-02-18 Thread gccadmin
Snapshot gcc-4.9-20150218 is now available on ftp://gcc.gnu.org/pub/gcc/snapshots/4.9-20150218/ and on various mirrors, see http://gcc.gnu.org/mirrors.html for details. This snapshot has been generated from the GCC 4.9 SVN branch with the following options: svn://gcc.gnu.org/svn/gcc/branches

Thanks

2015-02-18 Thread Hervé Mutombo
Greetings, My name is MUTOMBO MATANDA "Kyle" Hervé. I am one of the large community of GCC users. It is remarkable how you have written the GCC toolchain especially when we figure out how much time and mental efforts that it requires. It has been 7 years now since my first use of your compiler a