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| author | Jason Merrill <jason@gcc.gnu.org> | 2014-07-11 17:10:49 -0400 |
|---|---|---|
| committer | Jason Merrill <jason@gcc.gnu.org> | 2014-07-11 17:10:49 -0400 |
| commit | 54c61de798fe4654a15c830adc140e32b4c2da74 (patch) | |
| tree | f52aadc6dc0b5fe0a1c448cc475f9bd578f3d7fe | |
| parent | 0b83e6882437a80458a7435cf434fbdccb37fa60 (diff) | |
| download | gcc-54c61de798fe4654a15c830adc140e32b4c2da74.zip gcc-54c61de798fe4654a15c830adc140e32b4c2da74.tar.gz gcc-54c61de798fe4654a15c830adc140e32b4c2da74.tar.bz2 | |
* doc/invoke.texi: Document -fno-use-all-virtuals.
From-SVN: r212468
| -rw-r--r-- | gcc/doc/invoke.texi | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index a83f6c6..029ee85 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -189,7 +189,8 @@ in the following sections. -fno-pretty-templates @gol -frepo -fno-rtti -fstats -ftemplate-backtrace-limit=@var{n} @gol -ftemplate-depth=@var{n} @gol --fno-threadsafe-statics -fuse-cxa-atexit -fno-weak -nostdinc++ @gol +-fno-threadsafe-statics -fno-use-all-virtuals -fuse-cxa-atexit @gol +-fno-weak -nostdinc++ @gol -fvisibility-inlines-hidden @gol -fvtable-verify=@var{std|preinit|none} @gol -fvtv-counts -fvtv-debug @gol @@ -2318,6 +2319,16 @@ ABI for thread-safe initialization of local statics. You can use this option to reduce code size slightly in code that doesn't need to be thread-safe. +@item -fno-use-all-virtuals +@opindex fno-use-all-virtuals +By default, G++ now treats all virtual functions declared in a +translation unit as odr-used, so they will be instantiated or +synthesized if possible even if they are not needed for the final +output. This is done so that such functions can be inlined after +devirtualization changes an indirect call into a direct call. If this +instantiation and synthesis prevents your code from compiling +successfully, you can disable it with this option. + @item -fuse-cxa-atexit @opindex fuse-cxa-atexit Register destructors for objects with static storage duration with the |