[tremor] [PATCH] new mdct code, redundant tables eliminated

[timmy brolin]

Hey! I was about to post that very same patch today!
Anyway.. looks good.
/
Timmy

-----Original Message-----
From: Nicolas Pitre <nico at cam.org>
To: Monty <xiphmont at xiph.org>
Date: Thu, 12 Sep 2002 21:23:53 -0400 (EDT)
Subject: [tremor] [PATCH] new mdct code, redundant tables eliminated

<p>Well not really a patch but rather the file themselves since they are 
smaller than the actual patch!  :-)

  - All redundant lookup tables eliminated;
  - mdct_init removed;
  - negative operands factorized out;
  - loop layout to allow the compiler to nicely use the ARM's 
    dereference with preincrement and write back addressing mode for
    the T and V pointers;
  - miscelaneous code optimisations and uniformisation.

Everything should be ready for the next step which would involve only a
little inline assembly to fully optimize the cross product all over the
place.

<p>Nicolas

<p><p><p>--- >8 ----
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