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Mail Archives: pgcc/1998/06/29/21:54:51

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Message-ID: <19980629235144.61540@cerebro.laendle>
Date: Mon, 29 Jun 1998 23:51:44 +0200
From: Marc Lehmann <pcg AT goof DOT com>
To: beastium <beastium-list AT Desk DOT nl>
Subject: bzip2-mx vs. bzip2-nomx (II) (and patch)
Mail-Followup-To: beastium <beastium-list AT desk DOT nl>
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X-Operating-System: Linux version 2.1.107 (root AT cerebro) (gcc version pgcc-2.91.43 19980628 (gcc2 ss-980502 experimental))
Status: RO
Lines: 23

Now the picture is clearer:

		bzip2-nomx	bzip2-mx	slowdown
pii		1.67		1.76		1.6%
pentium-mmx	1.37		1.59		14%
amdk6		2.27		2.67		15%
cyrix6x86mx	1.75		2.22		21%

intel rules :[]. I uploaded a patch against egcs-19980628 into
ftp.goof.com:/pub/pcg/test/ (but 0621 is faster ;), for people to play (and
hopefully improve), it adds these switches (among others):

-mmx		use mmx instructions, safe to mix fpu and mmx code
-mmx-only	use mmx instructions and assume there is no fpu around

      -----==-                                              |
      ----==-- _                                            |
      ---==---(_)__  __ ____  __       Marc Lehmann       +--
      --==---/ / _ \/ // /\ \/ /       pcg AT goof DOT com       |e|
      -=====/_/_//_/\_,_/ /_/\_\                          --+
    The choice of a GNU generation                        |
                                                          |

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