List all possible optimizations and the optimization level they're
activated at.
.TP
+.BR -q ", " --quiet
+Be less verbose. In particular removes the messages about which files
+are being processed, and which compilation mode is being used, and
+some others. Warnings and errors will of course still be displayed.
+.TP
.BI -W warning "\fR, " "" -Wno- warning
Enable or disable a warning.
.TP
the actual attribute syntax is better defined.
.SH COMPILE FLAGS
.TP
-.B -foverlap-locals
-Allow local variables to overlap with each other if they don't
-interfer with each other. (Not implemented right now)
-.TP
.B -fdarkplaces-string-table-bug
Add some additional characters to the string table in order to
compensate for a wrong boundcheck in some specific version of the
features used in the Xonotic codebase. If you need more, write a
ticket.
.TP
+.B -fftepp-predefs
+Enable some predefined macros. This only works in combination with
+\'-fftepp' and is currently not included by '-std=fteqcc'. The
+following macros will be added:
+.in +4
+.nf
+__LINE__
+__FILE__
+__COUNTER__
+__COUNTER_LAST__
+__RANDOM__
+__RANDOM_LAST__
+.fi
+.in
+Note that fteqcc also defines __FUNC__, __TIME__, __DATE__ and
+__NULL__, which are not yet implemented.
+.TP
.B -frelaxed-switch
Allow switch cases to use non constant variables.
.TP
it's hard to know whether or not an array is actually fully
initialized, especially when initializing it via a loop, we assume
functions with arrays to be too dangerous for this optimization.
+.TP
+.B -Olocal-temps
+This promotes locally declared variables to "temps". Meaning when a
+temporary result of an operation has to be stored somewhere, a local
+variable which is not 'alive' at that point can be used to keep the
+result. This can reduce the size of the global section.
+This will not have declared variables overlap, even if it was
+possible.
+.TP
+.B -Ostrip-constant-names
+Don't generate defs for immediate values or even declared constants.
+Meaning variables which are implicitly constant or qualified as such
+using the 'const' keyword.
+.TP
+.B -Ooverlap-strings
+Aggressively reuse strings in the string section. When a string should
+be added which is the trailing substring of an already existing
+string, the existing string's tail will be returned instead of the new
+string being added.
+
+For example the following code will only generate 1 string:
+
+.in +4
+.nf
+print("Hell you!\\n");
+print("you!\\n"); // trailing substring of "Hello you!\\n"
+.fi
+.in
+There's however one limitation. Strings are still processed in order,
+so if the above print statements were reversed, this optimization
+would not happen.
.SH CONFIG
The configuration file is similar to regular .ini files. Comments
start with hashtags or semicolons, sections are written in square
.fi
.in
.SH BUGS
+Currently the '-fftepp-predefs' flag is not included by '-std=fteqcc',
+partially because it is not entirely conformant to fteqcc.
+.sp
+
Please report bugs on <http://github.com/graphitemaster/gmqcc/issues>,
or see <http://graphitemaster.github.com/gmqcc> on how to contact us.
.SH FILES