From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: yodaiken@fsmlabs.com (Victor Yodaiken)
Cc: torvalds@transmeta.com (Linus Torvalds), linux-kernel@vger.kernel.org
Subject: Re: Why Plan 9 C compilers don't have asm("")
Date: Sun, 8 Jul 2001 23:28:59 +0100 (BST) [thread overview]
Message-ID: <E15JN2x-0000kq-00@the-village.bc.nu> (raw)
In-Reply-To: <20010708155518.A23324@hq2> from "Victor Yodaiken" at Jul 08, 2001 03:55:18 PM
> That seems amazingly dumb. You'd think a new processor design would
> optimize parallel computation over calls, but what do I know?
They try to. Take a look at the trace cache on the Pentium IV. They certainly
seem to have badly screwed the chip design up elsewhere but the trace cache
has some very clever ideas in it
> were so damn obstinate about "every instruction fits in 32 bits"
> and refused to have "call 32 bit immediate given in next word" not
> to mention a "load 32bit immediate given in next word".
> Note, the superior x86 instruction set has a 5 byte call immediate.
Some do. After all there is nothing unrisc about
call [ip]++
Maybe the idea died with the PDP-11 designers 8)
Alan
next prev parent reply other threads:[~2001-07-08 22:29 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-07-04 3:37 Why Plan 9 C compilers don't have asm("") Rick Hohensee
2001-07-04 3:36 ` Olivier Galibert
2001-07-04 6:24 ` Cort Dougan
2001-07-04 8:03 ` H. Peter Anvin
2001-07-04 17:22 ` Linus Torvalds
2001-07-06 8:38 ` Cort Dougan
2001-07-06 18:44 ` Linus Torvalds
2001-07-06 20:02 ` Cort Dougan
2001-07-08 21:55 ` Victor Yodaiken
2001-07-08 22:28 ` Alan Cox [this message]
2001-07-09 1:22 ` Johan Kullstam
2001-07-08 22:29 ` David S. Miller
2001-07-06 11:43 ` David S. Miller
2001-07-21 22:10 ` Richard Henderson
2001-07-22 3:43 ` Linus Torvalds
2001-07-22 3:59 ` Mike Castle
2001-07-22 6:49 ` Richard Henderson
2001-07-22 7:44 ` Linus Torvalds
2001-07-22 15:53 ` Richard Henderson
2001-07-22 19:08 ` Linus Torvalds
2001-07-04 7:15 ` pazke
2001-07-04 17:32 ` Don't feed the trooll [offtopic] " Ben LaHaise
2001-07-05 1:02 ` Michael Meissner
2001-07-05 1:54 ` Rick Hohensee
2001-07-05 16:54 ` Michael Meissner
2001-07-04 10:10 Rick Hohensee
2001-07-05 3:26 Rick Hohensee
2001-07-06 17:24 Rick Hohensee
2001-07-06 23:54 ` David S. Miller
2001-07-07 0:16 ` H. Peter Anvin
2001-07-07 0:37 ` David S. Miller
2001-07-07 6:16 Rick Hohensee
[not found] <mailman.994629840.17424.linux-kernel2news@redhat.com>
2001-07-09 0:08 ` Pete Zaitcev
2001-07-09 0:28 ` Victor Yodaiken
2001-07-09 3:03 Rick Hohensee
2001-07-23 4:39 Rick Hohensee
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