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From: kirchner@informatik.uni-kl.de (Reinhard Kirchner)
Newsgroups: comp.benchmarks
Subject: Special Benchmark Optimizations ( Here Whetstone )
Keywords: Benchmarks, Whetstone
Message-ID: <7430@uklirb.informatik.uni-kl.de>
Date: 4 Jan 91 15:10:53 GMT
Sender: news@uklirb.informatik.uni-kl.de
Lines: 15




Hello,
Mr. Mashey wrote that some compilers do a special optimization on the
whetstone benchmark. I want to confirm this:

The Siemens BS2000 Fortran ( FOR1 ) generates for SIN(x)/COS(x) a call
for TAN(x). It is done only in the highest level of optimization,
and it speeds this thing up by 10% or so ( this is some years ago, I don't
remember any details )

Reinhard Kirchner
Univ. Kaiserslautern, Germany
kirchner@uklirb.informatik.uni-kl.de