Article View: comp.arch
Article #21735Re: Pipelined FP add
From: Mark G. Johnson
Date: Thu, 14 Dec 1989 23:04
Date: Thu, 14 Dec 1989 23:04
8 lines
834 bytes
834 bytes
In article <38132@ames.arc.nasa.gov> lamaster@ames.arc.nasa.gov (Hugh LaMaster) writes: >(I hope nobody still uses the IBM 360 setup, where you have to push >the data to *memory* to get it back and forth between integer and fp > units...) I believe SPARC does this, because there aren't FPR <-> GPR move instructions. However, "*memory*" is just a few cycles away (3 for the store, 2 more for the load) thanks to cache.
Technical Details
Message-ID:
<33623@mips.mips.COM>Path:
arc1-ca.pugleaf.net!utzoo!attcan!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!usc!brutus.cs.uiuc.edu!apple!mips!hal!markReferences:
<241@dg.dg.com> <33570@hal.mips.COM> <3740@brazos.Rice.edu> <38132@ames.arc.nasa.gov>Show Full Headers
Complete Article Headers
Path: arc1-ca.pugleaf.net!utzoo!attcan!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!usc!brutus.cs.uiuc.edu!apple!mips!hal!mark From: mark@mips.COM (Mark G. Johnson) Newsgroups: comp.arch Subject: Re: Pipelined FP add Message-ID: <33623@mips.mips.COM> Date: 14 Dec 89 23:04:08 GMT References: <241@dg.dg.com> <33570@hal.mips.COM> <3740@brazos.Rice.edu> <38132@ames.arc.nasa.gov> Sender: news@mips.COM Lines: 8