From 7b8c3aedac0e8cf2fac509713515bbeff8afeff9 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Thu, 21 Feb 2008 13:02:31 +0000
Subject: "General Tips" section

Originally committed as revision 12168 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 doc/optimization.txt | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

(limited to 'doc/optimization.txt')

diff --git a/doc/optimization.txt b/doc/optimization.txt
index 27fcbba02f..091551a25f 100644
--- a/doc/optimization.txt
+++ b/doc/optimization.txt
@@ -151,6 +151,22 @@ The minimum guaranteed alignment is written in the .h files, for example:
     void (*put_pixels_clamped)(const DCTELEM *block/*align 16*/, UINT8 *pixels/*align 8*/, int line_size);
 
 
+General Tips:
+-------------
+Use asm loops like:
+asm(
+    "1: ....
+    ...
+    "jump_instruciton ....
+dont use C loops:
+do{
+    asm(
+        ...
+}while()
+
+Use asm() instead of intrinsics. Later require a good optimizing compiler
+which gcc is not.
+
 
 Links:
 ======
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