From: Tejas Joshi <tejasjoshi9673@gmail.com>
To: gcc@gcc.gnu.org
Subject: Re: About GSOC.
Date: Wed, 23 Jan 2019 02:55:00 -0000 [thread overview]
Message-ID: <CACMrGjBw3-Xm1rHAanVUjYGC3SojJSgKZKL5B+HdkcTEOZ=Kkg@mail.gmail.com> (raw)
In-Reply-To: <alpine.DEB.2.21.1901212257310.27116@digraph.polyomino.org.uk>
> differ. (It's the unoptimized, stage1 cc1 that should be run under a
> debugger. See <https://gcc.gnu.org/wiki/DebuggingGCC> for more details.)
Hello.
I normally configure GCC by (as you told)
/configure --enable-languages=c,c++ --disable-bootstrap --disable-multilib
And further as told in <https://gcc.gnu.org/wiki/DebuggingGCC>
make STAGE1_CXXFLAGS="-g -O0" all-stage1
but instead of -g to use -g3 is suggested for making macros debuggable
and then use GDB.
May I proceed the same?
On Tue, 22 Jan 2019 at 04:33, Joseph Myers <joseph@codesourcery.com> wrote:
>
> On Tue, 22 Jan 2019, Tejas Joshi wrote:
>
> > the number like nan or normal in the functions. Though, attributes of
> > struct real_value are pretty unclear to me regarding to the number it
> > represents. (Am I right within this grasp?).
>
> It may be helpful to run the compiler under a debugger to examine how
> particular real numbers are represented in real_value - that should help
> answer questions such as what endianness is used for the significand, or
> whether floating point values with a given exponent are in the range
> [2^EXP, 2^(EXP+1)) or [2^(EXP-1), 2^EXP), where conventions commonly
> differ. (It's the unoptimized, stage1 cc1 that should be run under a
> debugger. See <https://gcc.gnu.org/wiki/DebuggingGCC> for more details.)
>
> And of course contribute comments in real.h once you've determined the
> answers - because there are such areas where conventions about
> representation of floating-point numbers commonly differ, it's
> particularly valuable to have such comments because even someone familiar
> with floating-point won't know which convention has been chosen by this
> code in GCC.
>
> --
> Joseph S. Myers
> joseph@codesourcery.com
next prev parent reply other threads:[~2019-01-23 2:55 UTC|newest]
Thread overview: 74+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CACMrGjCeaZ7EoYqjLYiAJXjOtOfpJNo9zcbWhfarfkiLMN8YYA@mail.gmail.com>
2018-10-13 4:43 ` Tejas Joshi
2018-10-23 10:47 ` Martin Jambor
2018-10-23 16:51 ` Joseph Myers
2018-11-16 16:50 ` Tejas Joshi
2018-11-16 19:00 ` Joseph Myers
2019-01-21 19:13 ` Tejas Joshi
2019-01-21 23:03 ` Joseph Myers
2019-01-23 2:55 ` Tejas Joshi [this message]
2019-01-23 4:00 ` Tejas Joshi
2019-01-23 17:37 ` Joseph Myers
2019-01-25 19:52 ` Tejas Joshi
2019-01-25 21:32 ` Joseph Myers
2019-01-28 17:00 ` Tejas Joshi
2019-02-04 14:39 ` Tejas Joshi
2019-02-04 15:06 ` Prathamesh Kulkarni
2019-02-04 15:56 ` Tejas Joshi
2019-02-04 16:44 ` Prathamesh Kulkarni
2019-02-04 17:22 ` Tejas Joshi
2019-02-24 12:05 ` Tejas Joshi
2019-03-30 11:24 ` Tejas Joshi
2019-04-01 19:53 ` Joseph Myers
2019-04-04 13:04 ` Tejas Joshi
2019-05-04 11:20 ` Tejas Joshi
2019-05-07 17:18 ` Joseph Myers
2019-05-07 19:38 ` Tejas Joshi
2019-05-07 21:01 ` Joseph Myers
2019-05-08 3:27 ` Tejas Joshi
2019-05-08 7:30 ` Tejas Joshi
2019-05-08 14:21 ` Tejas Joshi
2019-05-09 17:01 ` Joseph Myers
2019-05-09 16:55 ` Joseph Myers
2019-05-20 15:49 ` Martin Jambor
2019-05-20 21:48 ` Joseph Myers
2019-05-29 11:21 ` Tejas Joshi
2019-05-29 18:45 ` Tejas Joshi
2019-05-30 17:08 ` Martin Jambor
2019-05-30 21:38 ` Segher Boessenkool
2019-05-31 10:11 ` Martin Jambor
2019-05-31 10:28 ` Tejas Joshi
2019-06-03 16:38 ` Joseph Myers
2019-06-04 7:03 ` Tejas Joshi
2019-06-05 12:19 ` Tejas Joshi
2019-06-06 16:43 ` Joseph Myers
2019-06-09 4:48 ` Tejas Joshi
2019-06-10 20:26 ` Joseph Myers
2019-06-12 18:52 ` Tejas Joshi
2019-06-13 12:33 ` Tejas Joshi
2019-06-13 17:19 ` Expanding roundeven (Was: Re: About GSOC.) Martin Jambor
2019-06-13 21:16 ` Joseph Myers
2019-06-14 12:49 ` Tejas Joshi
2019-06-14 17:32 ` Martin Jambor
2019-06-17 7:50 ` Tejas Joshi
2019-06-17 17:15 ` Joseph Myers
2019-06-19 13:32 ` Tejas Joshi
2019-06-22 17:11 ` Tejas Joshi
2019-06-22 17:37 ` Jan Hubicka
2019-06-17 17:10 ` Joseph Myers
2019-05-31 11:13 ` About GSOC Segher Boessenkool
2019-05-31 11:16 ` Nathan Sidwell
2019-05-31 13:30 ` Eric Gallager
2019-06-03 9:37 ` Tejas Joshi
2019-06-06 16:56 ` Committing patches and other conventions (Was: Re: About GSOC) Martin Jambor
2019-06-09 4:57 ` Tejas Joshi
2019-06-12 13:48 ` Tejas Joshi
2019-06-13 17:02 ` Martin Jambor
2024-03-04 6:57 About gsoc mokshagnareddyc
2024-03-04 10:06 ` Jonathan Wakely
2024-03-05 2:02 ` Dave Blanchard
2024-03-05 9:31 ` Jonathan Wakely
2024-03-05 9:32 ` Jonathan Wakely
2024-03-11 1:17 ` Dave Blanchard
2024-03-11 9:08 ` Mark Wielaard
2024-03-07 12:26 ` Martin Jambor
2024-03-11 12:41 Julian Waters
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