42 lines
1.4 KiB
Groff
42 lines
1.4 KiB
Groff
.\" $Header$
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.TH EM_NCG 6ACK
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.ad
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.SH NAME
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em_ncg \- EM to assembly code translator
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.SH SYNOPSIS
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~em/lib/\fBmach\fP/cg [-d\fIn\fP] [-p\fIn\fP] [-w\fIn\fP] [-u\fIfile\fP] [ infile [ outfile ] ]
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.SH DESCRIPTION
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Em_cg reads a compact EM-program, argument or standard input,
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and produces an assembly program on argument or standard output
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for the machine that is in its name.
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Flags recognized are:
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.IP -d\fIn\fP
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Run in debugging mode, debugging level \fIn\fP,
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only possible when the translator is compiled in the right way.
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.IP -p\fIn\fP
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Set the ply to \fIn\fP, default 1.
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The ply is the maximum lookahead depth the code generator may take.
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Effects of this flag are machine dependent.
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.IP -w\fIn\fP
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Set the weight percentage for size to \fIn\fP %, default is 50.
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This sets the size/time tradeoff in the codegenerator.
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Effects are again machine dependent.
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.IP -u\fIfile\fP
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Take the \fIfile\fP as a bitmap giving 1 bits for untested code rules
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and write the \fIfile\fP at end of code generation,
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substituting zero bits for rules used.
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Give a list of untested rules on standard error, unless the -u
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was given as -U.
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Only possible if the -d flag was given to ncgg(6).
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.SH FILES
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code If the -c flag was given to ncgg(6)
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.SH "SEE ALSO"
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ack(1),
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ncgg(6)
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.PD 0
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.IP [1]
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A.S. Tanenbaum, Hans van Staveren, Ed Keizer and Johan
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Stevenson "Description of a machine architecture for use with
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block structured languages" Informatica report IR-81.
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.SH AUTHOR
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Hans van Staveren, Vrije Universiteit
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