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Suggested addition to documentation
- To: gcc at gcc dot gnu dot org
- Subject: Suggested addition to documentation
- From: Brad Lucier <lucier at math dot purdue dot edu>
- Date: Mon, 21 May 2001 22:49:31 -0500
- Cc: lucier at math dot purdue dot edu
I couldn't find the best place in the documentation to put this note.
This is true for 3.0; I believe there have been three questions
about this performance issue since last summer posted to the
gcc mail list.
Note: If you write a program using computed gotos, a GCC extension,
and you compile the program with optimization level @samp{-O2} or higher,
you may get better runtime performance if you disable the global common
subexpression elmination (gcse) pass by adding the @samp{-fno-gcse} option'
to the command line.
Brad Lucier