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Re: new unroller vs ppc
- From: David Edelsohn <dje at watson dot ibm dot com>
- To: Zdenek Dvorak <rakdver at atrey dot karlin dot mff dot cuni dot cz>
- Cc: Dale Johannesen <dalej at apple dot com>, gcc at gcc dot gnu dot org
- Date: Wed, 26 Mar 2003 14:52:41 -0500
- Subject: Re: new unroller vs ppc
- References: <20030321075050.GA25664@atrey.karlin.mff.cuni.cz>
I will try with your subreg patch, but just to let you know the
magnitude of the performance degradation created by the new unroller code
for PowerPC:
Base = old unroller, Peak = new unroller
168.wupwise 1600 262 611* 1600 270 593*
171.swim 3100 534 580* 3100 520 596*
172.mgrid 1800 317 567* 1800 518 347*
177.mesa 1400 293 477* 1400 308 454*
179.art 2600 233 1117* 2600 270 962*
183.equake 1300 129 1009* 1300 141 919*
188.ammp 2200 628 350* 2200 595 370*
200.sixtrack 1100 683 161* 1100 662 166*
181.mcf 1800 217 831* 1800 216 832*
197.parser 1800 592 304* 1800 579 311*
255.vortex 1900 289 657* 1900 287 662*
300.twolf 3000 465 645* 3000 469 640*
David