llvm-6502/docs/CommandGuide/lli.html
2003-10-31 05:12:04 +00:00

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LLVM: lli tool
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<h1>LLVM: <tt>lli</tt> tool</h1>
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<h3>
NAME
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<tt>lli</tt>
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SYNOPSIS
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<tt>lli [options] [filename] [args ...]</tt>
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DESCRIPTION
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<tt>lli</tt> directly executes programs in LLVM format.
It takes a program in LLVM
bytecode format and executes it using a just-in-time
compiler, if one is available for the current architecture, or an interpreter.
<tt>lli</tt> takes all of the same code generator options as the
<tt><a href="llc.html">llc</a></tt> tool, but they are only applicable when
the just-in-time compiler is being used.
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If filename is not specified, then <tt>lli</tt> reads the LLVM bytecode for
the program from standard input.
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The optional "args" specified on the command line are passed to the
program as arguments.
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<h3>
OPTIONS
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<ul>
<li> <tt>-help</tt>
<br>
Print a summary of command line options.
<p>
<li> <tt>-stats</tt>
<br>
Print statistics from the code-generation passes. This is only meaningful
for the just-in-time compiler, at present.
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<li> <tt>-time-passes</tt>
<br>
Record the amount of time needed for each code-generation pass and print
it to standard error.
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<li> <tt>-march=&lt;arch&gt;</tt>
<br>
Use the specified non-default architecture when selecting a code generator
for the just-in-time compiler. This may result in a crash if you pick an
architecture which is not compatible with the hardware you are running
<tt>lli</tt> on.
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<li> <tt>-force-interpreter={false,true}</tt>
<br>
If set to true, use the interpreter even if a just-in-time compiler is
available for this architecture. Defaults to false.
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<li> <tt>-f=&lt;name&gt;</tt>
<br>
Call the function named <tt>&lt;name&gt;</tt> to start the program.
Note: The function is assumed to have the C signature <tt>int
<tt>&lt;name&gt;</tt> (int, char **, char **)</tt>.
If you try to use this option to call a function of incompatible type,
undefined behavior may result. Defaults to "main".
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</ul>
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EXIT STATUS
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If <tt>lli</tt> fails to load the program, it will exit with an exit code of 1.
Otherwise, it will return the exit code of the program it executes.
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SEE ALSO
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<a href="llc.html"><tt>llc</tt></a>
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Maintained by the <a href="http://llvm.cs.uiuc.edu">LLVM Team</a>.
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