On Wed, Oct 07, 2009 at 09:05:48PM -0700, Ian Lance Taylor wrote: > Edd Barrett <vex...@gmail.com> writes: > > > I would be really interested to know how GCC: > > * Decides whether or not to embed tables in the data segment of the binary. > > * Selects the comparisons in the above tree. > > The relevant code is expand_case and friends in gcc/stmt.c. Where a > jump table should go is decided on a target by target basis by the > backend macro JUMP_TABLES_IN_TEXT_SECTION.
Many thanks for the pointer > > > Perhaps someone knows of a good paper/book on this topic which could > > be of use, or a relevant section of code in the GCC sources (at the > > moment I am overwhelmed by the source tree). > > You may be interested in reading Roger Sayle's paper in the 2008 gcc > summit, linked from http://ols.fedoraproject.org/GCC/Reprints-2008/ . Excellent paper. Again many thanks! -- Best Regards Edd Barrett http://students.dec.bmth.ac.uk/ebarrett
