[gcc r12-1140] docs: Mention that -fgcse-after-reload is enabled with -O3.

[Martin Liska]

https://gcc.gnu.org/g:fdbd0cb73af527f0630f0cbb26edb8584f593fea

commit r12-1140-gfdbd0cb73af527f0630f0cbb26edb8584f593fea
Author: Martin Liska <mliska@suse.cz>
Date:   Tue Jun 1 14:17:39 2021 +0200

    docs: Mention that -fgcse-after-reload is enabled with -O3.
    
    gcc/ChangeLog:
    
            PR other/100826
            * doc/invoke.texi: Mention that -fgcse-after-reload
            is enabled with -O3.

Diff:
---
 gcc/doc/invoke.texi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 5cd4e2d993c..08c3206b719 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -10708,7 +10708,7 @@ When @option{-fgcse-after-reload} is enabled, a redundant load elimination
 pass is performed after reload.  The purpose of this pass is to clean up
 redundant spilling.
 
-Enabled by @option{-fprofile-use} and @option{-fauto-profile}.
+Enabled by @option{-O3}, @option{-fprofile-use} and @option{-fauto-profile}.
 
 @item -faggressive-loop-optimizations
 @opindex faggressive-loop-optimizations