Article View: comp.arch
Article #12318Re: Machines with cond. assignment instruction?
From: mbjr
Date: Fri, 22 Jan 1993 15:07
Date: Fri, 22 Jan 1993 15:07
53 lines
2048 bytes
2048 bytes
Some other machines that have conditional assignment instructions:
1- The IBM TJWatson VLIW, developed by K.Ebcioglu. Its instructions
are best represented as a tree such as
if cc1 then
R1=R2+R3
else if cc2
` R2=R3+R4
else
R3=R4+R5
In other words, it allows for some form of ANDing of condition codes
to be specified on the (long) instruction.
2- The SIGNETICS LIFE processor: there, every opcode has a third (boolean)
input. It also is a VLIW
3- The Multiflow TRACE has a "conditional assignment" opcode
The references are
[1] @Article(IBMVLIW,
Author="K. Ebcioglu",
Key="IBM_VLIW",
Title="Some Design Ideas for a VLIW Architecture for
Sequential-natured Software",
Journal="Proceeding of the IFIP Working Conference on Parallel
Processing",
Place="Pisa, Italy",
Month="April",
Year="1988")
[2]@Article(LIFE,
Author="J. Labrousse, G. Slavenburg",
Key="LIFE",
Title="CREATE-LIFE: A Design System for High Performance VLSI Circuits",
Journal="ICCD 1988")
[3]@Article(Colwell88,
Author="R. P. Colwell et al.",
Key="Colwell88",
Title="A VLIW architecture for a trace scheduling compiler",
Journal="IEEE Trans. Comp.",
Month="Aug",
Year="1988")
--
Mauricio Breternitz Jr, Ph.D. mbjr@futserv.austin.ibm.com
IBM AWD - Internal ZIP 9461
11400 Burnet Road - Austin, TX 78758
Austin TX 78758 phone (512) 838 8531
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Newsgroups: comp.arch Path: arc1-ca.pugleaf.net!sparky!uunet!cs.utexas.edu!geraldo.cc.utexas.edu!portal.austin.ibm.com!awdprime.austin.ibm.com!mbjr From: mbjr@austin.ibm.com () Subject: Re: Machines with cond. assignment instruction? Originator: mbjr@bretz.austin.ibm.com Sender: news@austin.ibm.com (News id) Message-ID: <C19Gp4.1vt1@austin.ibm.com> Date: Fri, 22 Jan 1993 15:07:52 GMT References: <1993Jan21.163607.31684@watson.ibm.com> <1993Jan22.111931.23733@odin.diku.dk> Organization: IBM Austin Lines: 53