From: Wolfgang Bumiller <blub@speed.at>
Date: Mon, 14 Jan 2013 10:16:49 +0000 (+0100)
Subject: manpage: -flegacy-vector-maths
X-Git-Tag: before-library~262
X-Git-Url: https://git.rm.cloudns.org/?a=commitdiff_plain;h=0962dfdd4d0481e0777b08f6551bd744ca91effc;p=xonotic%2Fgmqcc.git

manpage: -flegacy-vector-maths
---

diff --git a/doc/gmqcc.1 b/doc/gmqcc.1
index fe4909b..5240c4e 100644
--- a/doc/gmqcc.1
+++ b/doc/gmqcc.1
@@ -498,6 +498,10 @@ void vafunc(string...count) {
 }
 .fi
 .in
+.TP -flegacy-vector-maths
+Most Quake VMs, including the one from FTEQW or up till recently
+Darkplaces, do not cope well with vector instructions with overlapping
+input and output. This option will avoid producing such code.
 .SH OPTIMIZATIONS
 .TP
 .B -Opeephole