* doc/invoke.texi (-fprofile-values): Document.

From-SVN: r68523

gcc/doc/invoke.texi

@@ -258,7 +258,7 @@ in the following sections.
 @xref{Optimize Options,,Options that Control Optimization}.
 @gccoptlist{-falign-functions=@var{n}  -falign-jumps=@var{n} @gol
 -falign-labels=@var{n}  -falign-loops=@var{n}  @gol
--fbranch-probabilities  -fbranch-target-load-optimize @gol
+-fbranch-probabilities -fprofile-values -fbranch-target-load-optimize @gol
 -fbranch-target-load-optimize2 -fcaller-saves  -fcprop-registers @gol
 -fcse-follow-jumps  -fcse-skip-blocks  -fdata-sections @gol
 -fdelayed-branch  -fdelete-null-pointer-checks @gol
@@ -4324,6 +4324,11 @@ used in one place: in @file{reorg.c}, instead of guessing which path a
 branch is mostly to take, the @samp{REG_BR_PROB} values are used to
 exactly determine which path is taken more often.
 
+@item -fprofile-values
+@opindex fprofile-values
+If combined with @option{-fprofile-arcs}, it adds code so that some
+data about values of expressions in the program is gathered.
+
 @item -fnew-ra
 @opindex fnew-ra
 Use a graph coloring register allocator.  Currently this option is meant