"General Tips" section

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@12168 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

diff --git a/doc/optimization.txt b/doc/optimization.txt
index 27fcbba02fc6dcc911fc6e3802af925af801c894..091551a25ff7458dd9594b1ec06b1b6e44daeacc 100644 (file)
--- 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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