time spent in compiler phases

Greg Michaelson <greg@cs.heriot-watt.ac.uk>
Thu, 26 Sep 91 10:41:00 BST

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time spent in compiler phases greg@cs.heriot-watt.ac.uk (Greg Michaelson) (1991-09-26)
time spent in compiler phases haertel@euclid.uoregon.edu (1991-09-29)
time spent in compiler phases meissner@osf.org (1991-10-03)
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Newsgroups: comp.compilers
From: Greg Michaelson <greg@cs.heriot-watt.ac.uk>
Keywords: performance
Organization: Compilers Central
Date: Thu, 26 Sep 91 10:41:00 BST

Does any one have figures for the proportion of total compile time
spent in lexical analysis, syntax analysis, semantic analysis, code
generation and optimisation?
[It varies a lot by compiler. For Ken Thompson's Plan 9 C compiler, he said
that the Yacc parser took as much time as everything else put together, 25%
for low-level character bashing and 75% for Yacc slowness. This is quite
unusual, and his is an extremely fast compiler. -John]
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