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| author | Alexander Monakov <amonakov@ispras.ru> | 2009-10-15 20:10:49 +0400 |
|---|---|---|
| committer | Alexander Monakov <amonakov@gcc.gnu.org> | 2009-10-15 20:10:49 +0400 |
| commit | 83bb5ce30b8b913564df830a7859369fe257715e (patch) | |
| tree | 3c4edca7a61ec1f410733711440fff389a618c96 /gcc/doc | |
| parent | 77785f4f7a3a06369be1847032cf14ba77699daa (diff) | |
| download | gcc-83bb5ce30b8b913564df830a7859369fe257715e.zip gcc-83bb5ce30b8b913564df830a7859369fe257715e.tar.gz gcc-83bb5ce30b8b913564df830a7859369fe257715e.tar.bz2 | |
invoke.texi: Clarify that most optimizations are not enabled without -O.
2009-10-15 Alexander Monakov <amonakov@ispras.ru>
* doc/invoke.texi: Clarify that most optimizations are not enabled
without -O.
From-SVN: r152852
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/invoke.texi | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index ddcde71..ec91be0 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -5628,6 +5628,9 @@ each of them. Not all optimizations are controlled directly by a flag. Only optimizations that have a flag are listed in this section. +Most of the optimizations are not enabled if a @option{-O} level is not set on +the command line, even if individual optimization flags are specified. + Depending on the target and how GCC was configured, a slightly different set of optimizations may be enabled at each @option{-O} level than those listed here. You can invoke GCC with @samp{-Q --help=optimizers} |