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<h1><a name="TITLE"
>TITLE</a></h1>

<p>bench_op &#45; Benchmark one or more opcodes</p>

<h1><a name="SYNOPSIS"
>SYNOPSIS</a></h1>

<pre>  parrot bench_op.pir &#39;add $I0, $I1, $I2&#39;
  parrot bench_op.pir &#45;&#45;preops=&#39;newclass $P0, &#34;Foo&#34;&#39; file_w_ops.pir
  parrot bench_op.pir &#45;&#45;help</pre>

<h1><a name="DESCRIPTION"
>DESCRIPTION</a></h1>

<p>The given opcode(s) are compiled into a sequence:</p>

<pre>  .sub _entry0
    .param int N
    .local int i
    #
    # preops go here
    #
    null i
  loop:
    #
    # ops go here
    #
    inc i
    lt i, N, loop
  .end</pre>

<p>so they should conform to Parrot Calling Conventions. The code gets executed with the PIR compiler &#45; using symbolic variables is always ok.</p>

<p>Output is the time in seconds for 1.000.000 instruction(s).</p>

<h1><a name="OPTIONS"
>OPTIONS</a></h1>

<dl>
<dt><a name="&#45;&#45;times=N"
><i>&#45;&#45;times=N</i></a></dt>
Run the given opcode(s) in a loop <i>N</i> time. If no <i>&#45;&#45;times</i> options is given 100.000 is used.
<dt><a name="&#45;&#45;verbose=i"
><i>&#45;&#45;verbose=i</i></a></dt>
Set <i>&#45;&#45;verbose</i> to 1 to see the total time. Set <i>&#45;&#45;verbose</i> to 2 to see the compiled programs.
<dt><a name="&#45;&#45;preops=&#39;opcode(s)&#39;"
><i>&#45;&#45;preops=&#39;opcode(s)&#39;</i></a></dt>
Execute the given opcodes in front of the loop. This is needed for ops, that have side effects like <b>newclass</b>.
<dt><a name="&#45;&#45;help"
><i>&#45;&#45;help</i></a></dt>
Print a short description and exit.
<dt><a name="&#45;&#45;version"
><i>&#45;&#45;version</i></a></dt>
Print program version and exit.</dl>

<h1><a name="BUGS"
>BUGS</a></h1>

<p>You can&#39;t use the variables <i>i</i> and <i>N</i> nor the labels <i>loop:</i> and <i>_entry\d</i> in your opcodes.</p>

<h1><a name="AUTHOR"
>AUTHOR</a></h1>

<p>Leopold Toetsch &#60;lt@toetsch.at&#62;</p>
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