* tm.texi (Caller Saves): Say that DEFAULT_CALLER_SAVES has no

        effect when -O2 and higher.
        * invoke.texi (Optimize Options): Likewise for -fcaller-saves.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@21848 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 3 insertions, 3 deletions

diff --git a/gcc/tm.texi b/gcc/tm.texi
index 1c5d3b665a2..2d0aeaf86f4 100644
--- a/gcc/tm.texi
+++ b/gcc/tm.texi
@@ -3150,9 +3150,9 @@ must live across calls.
 @item DEFAULT_CALLER_SAVES
 Define this macro if function calls on the target machine do not preserve
 any registers; in other words, if @code{CALL_USED_REGISTERS} has 1
-for all registers.  This macro enables @samp{-fcaller-saves} by default.
-Eventually that option will be enabled by default on all machines and both
-the option and this macro will be eliminated.
+for all registers.  When defined, this macro enables @samp{-fcaller-saves} 
+by default for all optimization levels.  It has no effect for optimization
+levels 2 and higher, where @samp{-fcaller-saves} is the default.
 
 @findex CALLER_SAVE_PROFITABLE
 @item CALLER_SAVE_PROFITABLE (@var{refs}, @var{calls})