diff options
Diffstat (limited to 'gcc/doc/invoke.texi')
| -rw-r--r-- | gcc/doc/invoke.texi | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 1b3f1d6d504..1361ac22020 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -378,7 +378,7 @@ Objective-C and Objective-C++ Dialects}. -fcx-limited-range @gol -fdata-sections -fdce -fdelayed-branch @gol -fdelete-null-pointer-checks -fdevirtualize -fdevirtualize-speculatively @gol --devirtualize-at-ltrans -fdse @gol +-fdevirtualize-at-ltrans -fdse @gol -fearly-inlining -fipa-sra -fexpensive-optimizations -ffat-lto-objects @gol -ffast-math -ffinite-math-only -ffloat-store -fexcess-precision=@var{style} @gol -fforward-propagate -ffp-contract=@var{style} -ffunction-sections @gol @@ -7772,7 +7772,7 @@ are enabled independently at different optimization levels. @opindex fdevirtualize Attempt to convert calls to virtual functions to direct calls. This is done both within a procedure and interprocedurally as part of -indirect inlining (@code{-findirect-inlining}) and interprocedural constant +indirect inlining (@option{-findirect-inlining}) and interprocedural constant propagation (@option{-fipa-cp}). Enabled at levels @option{-O2}, @option{-O3}, @option{-Os}. @@ -7781,14 +7781,15 @@ Enabled at levels @option{-O2}, @option{-O3}, @option{-Os}. Attempt to convert calls to virtual functions to speculative direct calls. Based on the analysis of the type inheritance graph, determine for a given call the set of likely targets. If the set is small, preferably of size 1, change -the call into an conditional deciding on direct and indirect call. The +the call into a conditional deciding between direct and indirect calls. The speculative calls enable more optimizations, such as inlining. When they seem useless after further optimization, they are converted back into original form. @item -fdevirtualize-at-ltrans @opindex fdevirtualize-at-ltrans -Perform extra streaming needed for agressive devirtualization during LTO local -transformation stage. This option enables more devirtualization but +Stream extra information needed for aggressive devirtualization when running +the link-time optimizer in local transformation mode. +This option enables more devirtualization but significantly increases the size of streamed data. For this reason it is disabled by default. |