* doc/invoke.texi: Fix documentation for -ftree-dominator-opts.

From-SVN: r103289

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 7631710..7b7465a 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2005-08-19  Diego Novillo  <dnovillo@redhat.com>
+
+       * doc/invoke.texi: Fix documentation for -ftree-dominator-opts.
+
 2005-08-19  Devang Patel  <dpatel@apple.com>
 
        PR tree-optimization/23048

diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index caef60b..8e4cb80 100644 (file)
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -4960,8 +4960,11 @@ Perform dead code elimination (DCE) on trees.  This flag is enabled by
 default at @option{-O} and higher.
 
 @item -ftree-dominator-opts
-Perform dead code elimination (DCE) on trees.  This flag is enabled by
-default at @option{-O} and higher.
+Perform a variety of simple scalar cleanups (constant/copy
+propagation, redundancy elimination, range propagation and expression
+simplification) based on a dominator tree traversal.  This also
+performs jump threading (to reduce jumps to jumps). This flag is
+enabled by default at @option{-O} and higher.
 
 @item -ftree-ch
 Perform loop header copying on trees.  This is beneficial since it increases